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xasm-2.6.0
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Author | SHA1 | Date |
---|---|---|
Piotr Fusik | 9732817a0b | |
Piotr Fusik | 70c907bae6 | |
Piotr Fusik | 7a666799ac | |
Piotr Skamruk | 95136d1546 | |
Piotr Fusik | ca5e88950f | |
Piotr Fusik | 138331193a | |
Piotr Fusik | 30c96357bc | |
Jakub Husak | 83d2f8ff1d | |
Adrian Matoga | 9aae1ad4c4 | |
Piotr Fusik | f33c112ac6 | |
Piotr Fusik | 57661276c2 | |
Piotr Fusik | a4225b6128 | |
Piotr Fusik | 1da9f77458 | |
Piotr Fusik | 2b7d21ae43 | |
Adrian Matoga | 2f67b3bab4 | |
Piotr Fusik | afb9f7830e | |
Piotr Fusik | 95cb5ae592 | |
Piotr Fusik | 8f6621f079 | |
Piotr Fusik | 52982169df | |
Piotr Fusik | 8c7ef1a922 | |
Piotr Fusik | 1a90ca04d3 | |
Piotr Fusik | 73b382f9b7 | |
Piotr Fusik | 7ba3f9f597 | |
Piotr Fusik | b815a448cd | |
Piotr Fusik | 274dda9dd2 | |
Piotr Fusik | da58ad7950 | |
Piotr Fusik | 52ef8c05d6 | |
Piotr Fusik | 6f25038d95 | |
Adrian Matoga | 57ef9b5c83 | |
Adrian Matoga | 8f06fec50c | |
Piotr Fusik | d50d484e1f | |
Piotr Fusik | 65a2c1fbdd | |
Piotr Fusik | d3908ec95e | |
Piotr Fusik | 647cf9f3cf | |
Piotr Fusik | 819701b9be | |
Piotr Fusik | 301b904f60 | |
Piotr Fusik | 420a83a897 | |
Piotr Fusik | 2f8e97499d | |
Piotr Fusik | 7ad066fc6f | |
Piotr Fusik | a0bfe1366d | |
Piotr Fusik | 384643ab84 | |
Piotr Fusik | 177ece15fc | |
Piotr Fusik | 99099938b5 | |
Piotr Fusik | cb92f715a9 | |
Piotr Fusik | 110d2c4dad | |
Piotr Fusik | ce134af833 | |
Piotr Fusik | 92eac212cc | |
Piotr Fusik | 90276dbe86 | |
maraflush | 2e43507088 | |
Piotr Fusik | cc0eaf0e48 | |
Piotr Fusik | 2dad630a75 | |
Piotr Fusik | 36a4853b54 | |
Piotr Fusik | c4fc8ef51a | |
Piotr Fusik | ef297a78c7 | |
Piotr Fusik | 061088aa62 | |
Piotr Fusik | dd3466a947 | |
peterdell | d2bd24a128 | |
peterdell | 8d0870d1a1 | |
Piotr Fusik | d7c22cec84 | |
Piotr Fusik | b42f9dc2bf | |
Piotr Fusik | 5680efc7f5 | |
Piotr Fusik | 8c6ff185af | |
Piotr Fusik | 5970a93423 | |
Piotr Fusik | 389f7446e0 | |
Piotr Fusik | 3cec1c8ee8 | |
Piotr Fusik | 60d28a5c24 | |
Piotr Fusik | de22438740 | |
Piotr Fusik | cc5568795e | |
Piotr Fusik | d1276f3d97 | |
Piotr Fusik | 2d8b3cde17 | |
Piotr Fusik | c357fba52c | |
Piotr Fusik | 61327c8e5b | |
Piotr Fusik | 167c441fed | |
Piotr Fusik | 3a845f9a4f | |
Piotr Fusik | 50bae061f7 | |
Piotr Fusik | 520145268a | |
Piotr Fusik | 059b631aab | |
Piotr Fusik | f2e7796c87 | |
Piotr Fusik | 61bffbb8ec | |
Piotr Fusik | a2d6f9c864 | |
Piotr Fusik | 3fc9b5c0f5 | |
Piotr Fusik | 406354e06c | |
Adrian Matoga | 6992795f55 | |
Piotr Fusik | 034b95ea83 | |
Piotr Fusik | fa25272ccd | |
Piotr Fusik | 66501ef2fd | |
Piotr Fusik | 7c81897091 | |
Piotr Fusik | f288e64747 |
|
@ -0,0 +1,16 @@
|
|||
name: tests
|
||||
on: [push, pull_request]
|
||||
jobs:
|
||||
test:
|
||||
strategy:
|
||||
matrix:
|
||||
os: [windows-latest, ubuntu-latest]
|
||||
dc: [dmd-latest, ldc-latest]
|
||||
runs-on: ${{ matrix.os }}
|
||||
steps:
|
||||
- uses: actions/checkout@main
|
||||
- uses: dlang-community/setup-dlang@v1
|
||||
with:
|
||||
compiler: ${{ matrix.dc }}
|
||||
- run: dub build
|
||||
- run: dub test
|
|
@ -0,0 +1,10 @@
|
|||
/xasm
|
||||
/xasm.exe
|
||||
/xasm.obj
|
||||
/xasm.html
|
||||
/xasm.1
|
||||
/xasm-test-*
|
||||
/MANIFEST
|
||||
/.dub
|
||||
/.project
|
||||
/signed
|
|
@ -0,0 +1,77 @@
|
|||
VERSION = 3.2.1
|
||||
|
||||
prefix = /usr/local
|
||||
bindir = $(prefix)/bin
|
||||
mandir = $(prefix)/share/man/man1
|
||||
ifeq ($(OS),Windows_NT)
|
||||
EXEEXT = .exe
|
||||
endif
|
||||
|
||||
SEVENZIP = 7z a -mx=9 -bd -bso0
|
||||
|
||||
all: xasm$(EXEEXT) xasm.html
|
||||
|
||||
xasm$(EXEEXT): source/app.d
|
||||
dmd -of$@ -O -release $<
|
||||
|
||||
xasm.html: xasm.1.asciidoc
|
||||
asciidoc -o - $< | sed -e "s/527bbd;/20a0a0;/" >$@
|
||||
|
||||
xasm.1: xasm.1.asciidoc
|
||||
a2x -f manpage $<
|
||||
|
||||
install: xasm xasm.1
|
||||
mkdir -p $(DESTDIR)$(bindir) && install xasm $(DESTDIR)$(bindir)/xasm
|
||||
mkdir -p $(DESTDIR)$(mandir) && install -m 644 xasm.1 $(DESTDIR)$(mandir)/xasm.1
|
||||
|
||||
uninstall:
|
||||
$(RM) $(DESTDIR)$(bindir)/xasm $(DESTDIR)$(mandir)/xasm.1
|
||||
|
||||
install-scite: xasm.properties
|
||||
mkdir -p $(DESTDIR)$(prefix)/share/scite && install -m 644 $< $(DESTDIR)$(prefix)/share/scite/xasm.properties
|
||||
|
||||
uninstall-scite:
|
||||
$(RM) $(DESTDIR)$(prefix)/share/scite/xasm.properties
|
||||
|
||||
dist: srcdist ../xasm-$(VERSION)-windows.zip
|
||||
|
||||
srcdist: MANIFEST
|
||||
$(RM) ../xasm-$(VERSION).tar.gz && /usr/bin/tar -c --numeric-owner --owner=0 --group=0 --mode=644 -T MANIFEST --transform=s,,xasm-$(VERSION)/, | $(SEVENZIP) -tgzip -si ../xasm-$(VERSION).tar.gz
|
||||
|
||||
MANIFEST:
|
||||
if test -e .git; then (git ls-files | grep -vF .gitignore && echo MANIFEST) | sort | dos2unix >$@ ; fi
|
||||
|
||||
../xasm-$(VERSION)-windows.zip: xasm.exe xasm.html xasm.properties signed
|
||||
$(RM) $@ && $(SEVENZIP) -tzip $@ xasm.exe xasm.html xasm.properties
|
||||
|
||||
signed: xasm$(EXEEXT)
|
||||
signtool sign -d "xasm $(VERSION)" -n "Open Source Developer, Piotr Fusik" -tr http://time.certum.pl -fd sha256 -td sha256 $< && touch $@
|
||||
|
||||
deb:
|
||||
debuild -b -us -uc
|
||||
|
||||
osx: ../xasm-$(VERSION)-macos.dmg
|
||||
|
||||
../xasm-$(VERSION)-macos.dmg: osx/xasm osx/bin
|
||||
ifdef PORK_CODESIGNING_IDENTITY
|
||||
codesign --options runtime -f -s $(PORK_CODESIGNING_IDENTITY) osx/xasm
|
||||
endif
|
||||
hdiutil create -volname xasm-$(VERSION)-macos -srcfolder osx -format UDBZ -fs HFS+ -imagekey bzip2-level=3 -ov $@
|
||||
ifdef PORK_NOTARIZING_CREDENTIALS
|
||||
xcrun altool --notarize-app --primary-bundle-id com.github.pfusik.xasm $(PORK_NOTARIZING_CREDENTIALS) --file $@ \
|
||||
| perl -pe 's/^RequestUUID =/xcrun altool $$ENV{PORK_NOTARIZING_CREDENTIALS} --notarization-info/ or next; $$c = $$_; until (/Status: success/) { sleep 20; $$_ = `$$c`; print; } last;'
|
||||
endif
|
||||
|
||||
osx/xasm: source/app.d
|
||||
mkdir -p osx && dmd -of$@ -O -release $< && rm -f osx/xasm.o
|
||||
|
||||
osx/bin:
|
||||
mkdir -p osx && ln -s /usr/local/bin $@
|
||||
|
||||
clean:
|
||||
$(RM) xasm xasm.exe xasm.obj xasm.html xasm.1 signed
|
||||
rm -rf osx
|
||||
|
||||
.PHONY: all install uninstall install-scite uninstall-scite dist srcdist MANIFEST deb osx clean
|
||||
|
||||
.DELETE_ON_ERROR:
|
|
@ -0,0 +1,112 @@
|
|||
[![GitHub Actions](https://github.com/pfusik/xasm/actions/workflows/test.yml/badge.svg)](https://github.com/pfusik/xasm/actions/workflows/test.yml)
|
||||
|
||||
xasm
|
||||
====
|
||||
|
||||
xasm is a 6502 cross-assembler with original syntax extensions.
|
||||
By default it generates binaries
|
||||
for [Atari 8-bit computers](http://en.wikipedia.org/wiki/Atari_8-bit_family).
|
||||
|
||||
Syntax
|
||||
------
|
||||
|
||||
6502 assembly code is full of LDA, STA, LDA, STA sequences.
|
||||
With xasm you can use MVA as a shortcut for an LDA/STA pair or even MWA for 16-bit transfers.
|
||||
Short branches can be replaced with conditional skip and repeat pseudo-instructions.
|
||||
You can use a pair of instructions with a shared argument.
|
||||
These are just some of the features that help you program in a more concise way.
|
||||
Let's look at typical 6502 code (which is also valid in xasm):
|
||||
|
||||
lda #<dest
|
||||
sta ptr
|
||||
lda #>dest
|
||||
sta ptr+1
|
||||
ldx #192
|
||||
do_line
|
||||
ldy #39
|
||||
do_byte
|
||||
lda pattern,y
|
||||
sta (ptr),y
|
||||
dey
|
||||
bpl do_byte
|
||||
lda #40
|
||||
clc
|
||||
adc ptr
|
||||
sta ptr
|
||||
bcc skip
|
||||
inc ptr+1
|
||||
skip
|
||||
dex
|
||||
bne do_line
|
||||
|
||||
Using xasm's features this code can be rewritten to:
|
||||
|
||||
mwa #dest ptr
|
||||
ldx #192
|
||||
do_line
|
||||
ldy #39
|
||||
mva:rpl pattern,y (ptr),y-
|
||||
lda #40
|
||||
add:sta ptr
|
||||
scc:inc ptr+1
|
||||
dex:bne do_line
|
||||
|
||||
xasm syntax is an extension of Quick Assembler's (created in 1991 for Atari 8-bit).
|
||||
Accumulator shifts should be written as in `asl @`.
|
||||
Whitespace is important: it is required before the instruction
|
||||
and disallowed in the operands, because it separates a comment from the operand, e.g.
|
||||
|
||||
lda #0 this is a comment, no need for a semicolon
|
||||
|
||||
This may look weird at first, but it enables nice features such as instruction pairs
|
||||
and two-argument pseudo-instructions.
|
||||
|
||||
Usage
|
||||
-----
|
||||
|
||||
xasm is a command-line tool.
|
||||
Therefore you additionally need a programmer's text editor.
|
||||
|
||||
I use [SciTE](http://www.scintilla.org/SciTE.html).
|
||||
To install xasm syntax highlighting and single-keystroke compilation,
|
||||
copy `xasm.properties` to the SciTE directory.
|
||||
|
||||
For single source file programs, press Ctrl+F7 to compile.
|
||||
You can double-click error messages to go to the incorrect line.
|
||||
Press F5 to run the program in the emulator.
|
||||
|
||||
For larger projects, I use GNU Make. Press F7 to build (and possibly run)
|
||||
a project as described in the `Makefile`. You can find my Makefiles in
|
||||
[my repositories](https://github.com/pfusik?tab=repositories) on GitHub.
|
||||
|
||||
If you prefer VIM, see a link below.
|
||||
|
||||
Poetic License
|
||||
--------------
|
||||
|
||||
This work 'as-is' we provide.
|
||||
No warranty express or implied.
|
||||
We've done our best,
|
||||
to debug and test.
|
||||
Liability for damages denied.
|
||||
|
||||
Permission is granted hereby,
|
||||
to copy, share, and modify.
|
||||
Use as is fit,
|
||||
free or for profit.
|
||||
These rights, on this notice, rely.
|
||||
|
||||
Download
|
||||
--------
|
||||
|
||||
[xasm 3.2.1](https://github.com/pfusik/xasm/releases) for Windows, macOS, Ubuntu and Fedora.
|
||||
|
||||
Links
|
||||
-----
|
||||
|
||||
* [Atari800](https://atari800.github.io/) - portable emulator of Atari 8-bit computers
|
||||
* [Atari XL/XE Source Archive](http://sources.pigwa.net/) - source code of Atari demos, utilities and games
|
||||
* [cc65](https://cc65.github.io/) - C cross-compiler targeting 6502-based systems
|
||||
* [MADS](http://mads.atari8.info/) - another 6502/65816 cross-assembler, partially supporting xasm's syntax
|
||||
* [vim-xasm](https://github.com/lybrown/vim-xasm) - VIM syntax highlighting for xasm
|
||||
* [WUDSN IDE](http://wudsn.com/) - Eclipse plugin, front-end to several 6502 cross-assemblers, including xasm
|
|
@ -0,0 +1,23 @@
|
|||
xasm (3.2.1-1) UNRELEASED; urgency=low
|
||||
|
||||
* New release.
|
||||
|
||||
-- Piotr Fusik <fox@scene.pl> Thu, 8 Dec 2022 09:30:29 +0100
|
||||
|
||||
xasm (3.2.0-1) UNRELEASED; urgency=low
|
||||
|
||||
* New release.
|
||||
|
||||
-- Piotr Fusik <fox@scene.pl> Tue, 22 Jun 2021 20:59:45 +0200
|
||||
|
||||
xasm (3.1.1-1) UNRELEASED; urgency=low
|
||||
|
||||
* New release.
|
||||
|
||||
-- Piotr Fusik <fox@scene.pl> Wed, 20 Nov 2019 13:30:11 +0100
|
||||
|
||||
xasm (3.1.0-1) UNRELEASED; urgency=low
|
||||
|
||||
* First deb packaging.
|
||||
|
||||
-- Piotr Fusik <fox@scene.pl> Sun, 20 Jul 2014 19:08:15 +0200
|
|
@ -0,0 +1 @@
|
|||
10
|
|
@ -0,0 +1,16 @@
|
|||
Source: xasm
|
||||
Maintainer: Piotr Fusik <fox@scene.pl>
|
||||
Section: devel
|
||||
Priority: optional
|
||||
Standards-Version: 4.6.0
|
||||
Build-Depends: debhelper (>= 7), dmd (>= 2), asciidoc-base
|
||||
|
||||
Package: xasm
|
||||
Architecture: any
|
||||
Depends: ${shlibs:Depends}
|
||||
Description: 6502 cross-assembler with original syntax extensions.
|
||||
|
||||
Package: xasm-scite
|
||||
Architecture: all
|
||||
Depends: scite
|
||||
Description: xasm syntax highlighting and single keystroke compilation for SciTE.
|
|
@ -0,0 +1,7 @@
|
|||
Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
|
||||
Name: xasm
|
||||
Source: https://github.com/pfusik/xasm
|
||||
|
||||
Files: *
|
||||
Copyright: 1998-2021 Piotr Fusik <fox@scene.pl>
|
||||
License: Poetic
|
|
@ -0,0 +1,6 @@
|
|||
#!/usr/bin/make -f
|
||||
%:
|
||||
dh $@
|
||||
|
||||
override_dh_auto_install:
|
||||
$(MAKE) DESTDIR=$$(pwd)/debian/tmp prefix=/usr install install-scite
|
|
@ -0,0 +1 @@
|
|||
usr/share/scite/xasm.properties
|
|
@ -0,0 +1,2 @@
|
|||
usr/bin/xasm
|
||||
usr/share/man/man1/xasm.1
|
105
doc/editors.htm
105
doc/editors.htm
|
@ -1,105 +0,0 @@
|
|||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
||||
<head>
|
||||
<title>Configuring editors for xasm</title>
|
||||
<meta name="Author" content="Piotr Fusik"/>
|
||||
</head>
|
||||
<body>
|
||||
<h2>How to configure a text editor for a convenient use of xasm</h2>
|
||||
<p>This document describes, how to setup a text editor to:</p>
|
||||
<ul>
|
||||
<li>highlight xasm mnemonics</li>
|
||||
<li>invoke the assembler with a single keystroke</li>
|
||||
<li>place the cursor where an assembly error occured</li>
|
||||
</ul>
|
||||
<p>Of course these features are not available in the <i>Windows Notepad</i>,
|
||||
so you must pick another text editor. Fortunately there are many
|
||||
general-purpose text editors for Windows. I'll fucus on four of them:</p>
|
||||
<ul>
|
||||
<li><i>EditPlus</i>
|
||||
(<a href="http://www.editplus.com">www.editplus.com</a>)</li>
|
||||
<li><i>ConTEXT</i>
|
||||
(<a href="http://www.fixedsys.com/context">www.fixedsys.com/context</a>)</li>
|
||||
<li><i>Code-Genie</i>
|
||||
(<a href="http://www.code-genie.com">www.code-genie.com</a>)</li>
|
||||
<li><i>PSPad</i>
|
||||
(<a href="http://pspad.zde.cz">pspad.zde.cz</a>)</li>
|
||||
</ul>
|
||||
<p>All of these have similar features. Personally I prefer
|
||||
<i>Code-Genie</i>.</p>
|
||||
<h3>Highlighting xasm mnemonics</h3>
|
||||
<p>In the <tt>syntax</tt> subdirectory you'll find xasm syntax definitions
|
||||
for all of these editors.</p>
|
||||
<ul>
|
||||
<li>Installation for <i>EditPlus</i>:
|
||||
Select <b>Tools/Preferences</b>, then <b>Files/Settings & syntax</b>,
|
||||
then <b>Add</b>. Type <b>Description</b> (<tt>xasm</tt>),
|
||||
<b>File extensions</b> (<tt>asx</tt>), click <b>...</b> next to <b>Syntax
|
||||
file</b> and locate the <tt>xasm.stx</tt> file. Then click
|
||||
<b>Syntax colors</b> and select your favourite colors.</li>
|
||||
<li>Installation for <i>ConTEXT</i>: Just copy <tt>xasm.chl</tt>
|
||||
to the <tt>Highlighters</tt> subdirectory of the <i>ConTEXT</i>
|
||||
directory.</li>
|
||||
<li>Installation for <i>Code-Genie</i>:
|
||||
Copy <tt>xasm.cgsyn</tt> to the <tt>syn</tt> subdirectory in the
|
||||
<i>Code-Genie</i> directory. Edit <tt>cgenie.conf</tt>, you can do it by
|
||||
selecting <b>View/Settings</b>. Type:<br/>
|
||||
<tt>DefaultSyntax xasm asx</tt><br/>
|
||||
near other <tt>DefaultSyntax</tt> lines.</li>
|
||||
<li>Installation for <i>PSPad</i>: Copy <tt>xasm.ini</tt> to the
|
||||
<tt>Syntax</tt> subdirectory of the <i>PSPad</i> directory. Edit
|
||||
<tt>PSPad.ini</tt>. In the <tt>[Config]</tt> section set:<br/>
|
||||
<tt>UserHighLighterName=xasm</tt><br/>
|
||||
In the <tt>[General]</tt> section set:
|
||||
<pre>Filter=xasm (*.asx)|*.asx
|
||||
HLTabWidth=0
|
||||
IndentChar=
|
||||
UnIndentChar=
|
||||
Comment=0000800080000005000
|
||||
Identifier=8000000880000005000
|
||||
Key=00FF000080000005000
|
||||
Label=0000000080000005000
|
||||
Number=8000000880000005000
|
||||
Preprocessor=0080800080000005010
|
||||
Reserved word=00FF000080000005000
|
||||
Space=0080800080000005000
|
||||
String=0080008080000005000
|
||||
Symbol=8000000880000005000
|
||||
</pre></li>
|
||||
</ul>
|
||||
<h3>Single-keystroke assembly</h3>
|
||||
<ul>
|
||||
<li><i>EditPlus</i>: Select <b>Tools/Configure User Tools</b>.
|
||||
Then click <b>Add Tool</b>, type <b>Menu text</b> (<tt>xasm</tt>),
|
||||
<b>command</b> (path to <tt>xasm.exe</tt>), <b>Argument</b>
|
||||
(<tt>$(FilePath)</tt>) and <b>Initial directory</b>
|
||||
(<tt>$(FileDir)</tt>). Check <b>Capture output</b>.</li>
|
||||
<li> <i>ConTEXT</i>: Select <b>Options/Environment Options</b>, then
|
||||
the <b>Execute Keys</b> tab. Click <b>Add</b>, type <tt>asx</tt>, click
|
||||
e.g. <b>F9</b>, locate <tt>xasm.exe</tt> by pressing the <tt>...</tt> button
|
||||
in the top-right corner. Type <b>Start in</b> (<tt>%p</tt>)
|
||||
and <b>parameters</b> (<tt>%n</tt>). Check <b>Use short DOS names</b>
|
||||
and <b>Capture console output</b>.
|
||||
Type <b>Compiler output parser rule</b> (<tt>%n (%l)</tt>).</li>
|
||||
<li><i>Code-Genie</i>: Select <b>View/Settings</b>, type:<br/>
|
||||
<tt>AddUserTool xasm xasm.exe /p\s$FP CaptureOutput $FD</tt><br/>
|
||||
near other <tt>AddUserTool</tt> lines (if <tt>xasm.exe</tt> is not on your
|
||||
<tt>PATH</tt>, then you must type full path to it).</li>
|
||||
<li><i>PSPad</i>: Edit the <tt>[General]</tt> section of <tt>PSPad.ini</tt>:
|
||||
<pre>Compilator File=C:\U\XASM.EXE
|
||||
Compilator Param=/q /o:%Dir%%Name%.xex %File%
|
||||
Compilator LOG=
|
||||
Compilator Run=C:\Atari\a800win\Atari800Win.exe -run %Dir%%Name%.xex
|
||||
Compilator Help=
|
||||
Compilator SaveAll=1
|
||||
Compilator ParsLog=%F (%L) *
|
||||
Compilator Capture=1
|
||||
</pre>
|
||||
(replace the paths to xasm and the emulator).</li>
|
||||
</ul>
|
||||
<h3>Placing the cursor where an assembly error occured</h3>
|
||||
<p>This works same for all these four editors: just double-click the line
|
||||
with the error message.</p>
|
||||
</body>
|
||||
</html>
|
699
doc/xasm.htm
699
doc/xasm.htm
|
@ -1,699 +0,0 @@
|
|||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
||||
<head>
|
||||
<title>xasm 2.6.0</title>
|
||||
<meta name="Author" content="Piotr Fusik"/>
|
||||
</head>
|
||||
<body>
|
||||
<h2>NAME</h2>
|
||||
<p>xasm - 6502 cross-assembler</p>
|
||||
<h2>SYNOPSIS</h2>
|
||||
<p><tt>xasm source [options]</tt></p>
|
||||
<h2>DESCRIPTION</h2>
|
||||
<p><b>xasm</b> is a cross-assembler which generates code for the 6502
|
||||
processor.</p>
|
||||
<p><tt>source</tt> is the name of the source file. If no filename extension
|
||||
is given, <tt>.ASX</tt> is appended. The default action (when invoked without
|
||||
options) is to assembly <tt>source</tt>, writing the result to a file with
|
||||
the <tt>.OBX</tt> extension.</p>
|
||||
<h2>OPTIONS</h2>
|
||||
<dl>
|
||||
<dt><tt>/c</tt></dt>
|
||||
<dd>Enable listing false conditionals.
|
||||
Lines skipped due to a false condition are not listed by default.</dd>
|
||||
<dt><a name="new_deflabel"/><tt>/d:label=value</tt></dt>
|
||||
<dd>Define a label.
|
||||
<tt>label</tt> should be a valid label name.
|
||||
<tt>value</tt> may be any expression (it may use forward references
|
||||
to labels defined in the source file).
|
||||
You may use several <tt>/d</tt> options to define many labels
|
||||
from the command line.</dd>
|
||||
<dt><a name="new_environment"/><tt>/e</tt></dt>
|
||||
<dd>Enable setting environment variables pointing at the error location.
|
||||
With this option, <b>xasm</b> sets two environment variables:
|
||||
<tt>ERRFILE</tt> and <tt>ERRLINE</tt>.
|
||||
They may be used in a batch file to locate the error and set editor's
|
||||
insertion point on it. If there was no error, the variables point at the last
|
||||
issued warning. If no warning occured, they are removed from
|
||||
the environment.</dd>
|
||||
<dt><tt>/i</tt></dt>
|
||||
<dd>Disable listing included sources. Only main source file will be
|
||||
listed.</dd>
|
||||
<dt><tt>/l[:filename]</tt></dt>
|
||||
<dd>Enable listing. If no <tt>filename</tt> is given, the listing is written
|
||||
to <tt>source.lst</tt>, where <tt>source</tt> is the name of the source file
|
||||
(without the extension).</dd>
|
||||
<dt><tt>/o:filename</tt></dt>
|
||||
<dd>Specify object file name. The default is <tt>source.obx</tt>.
|
||||
You may use the null device (<tt>/o:nul</tt>) to generate no object file.</dd>
|
||||
<dt><a name="new_fullpaths"/><tt>/p</tt></dt>
|
||||
<dd>Print fully qualified file names in listing and error messages.
|
||||
This option is useful for the Code-Genie editor, which can jump to the error
|
||||
location only if the full path is given.</dd>
|
||||
<dt><a name="new_quiet"/><tt>/q</tt></dt>
|
||||
<dd>Suppress info messages.
|
||||
Prevents <b>xasm</b> from printing its name and the summary (how many lines
|
||||
assembled and bytes written). Good if you are building a project from many
|
||||
source files and don't want tons of messages.</dd>
|
||||
<dt><tt>/t[:filename]</tt></dt>
|
||||
<dd>List label table. If no <tt>filename</tt> given, the table is written
|
||||
at the end of listing or to <tt>source.tab</tt>.</dd>
|
||||
<dt><a name="new_unlabels"/><tt>/u</tt></dt>
|
||||
<dd>Warn of unused labels. A warning message will be issued for each label,
|
||||
whose value is never used.</dd>
|
||||
</dl>
|
||||
<h2>SYNTAX</h2>
|
||||
<p>Source files should be plain ASCII files. Although different line
|
||||
terminators are supported, CR/LF is recommended because it is the standard
|
||||
in the DOS/Windows environment. Lines must be no longer than 256
|
||||
characters. <b>xasm</b> is not case-sensitive, so you can mix upper-
|
||||
and lower-case for labels and instructions.</p>
|
||||
<p><b>xasm</b> is backward compatible with Quick Assembler.
|
||||
If you want to assembly QA sources with <b>xasm</b>, simply convert the text
|
||||
file to CR/LF terminators and replace ATASCII specific characters with their
|
||||
integer representation. You also have to change all <tt>OPT</tt> directives,
|
||||
but usually you only need to remove them.</p>
|
||||
<p>A <i>label</i> is a symbol that represents a 32-bit signed integer.
|
||||
You can define a label by putting its name at the beginning of a line
|
||||
(with no spaces before). If you do not use the <tt>EQU</tt> directive,
|
||||
the label is assigned the current value of the origin counter.</p>
|
||||
<p>Instructions and directives must be preceded with
|
||||
whitespace. Note that in <b>xasm</b> you can use instruction and directive
|
||||
names as label names. For example</p>
|
||||
<pre>nop
|
||||
</pre><p>defines a label called <tt>nop</tt>, whereas</p>
|
||||
<pre> nop
|
||||
</pre><p>is a 6502 instruction.</p>
|
||||
<p>Full comment lines must start with a semicolon, a pipe or an asterisk,
|
||||
with optional label definition and spaces before. Here are examples
|
||||
of full comment lines:</p>
|
||||
<pre>; this is a comment
|
||||
* so it is
|
||||
label | and this too
|
||||
</pre>
|
||||
<p><a name="new_linerep"/>Lines with instructions (and some directives)
|
||||
may be <i>repeated</i>. A single line may be assembled several times,
|
||||
for example:</p>
|
||||
<pre>:4 asl @
|
||||
table :32*5 dta 5
|
||||
</pre>
|
||||
<p>In lines with instructions or directives, a comment starts after
|
||||
the instruction/directive has been successfully parsed. That is, <b>xasm</b>
|
||||
does not require a special character to start a comment. However,
|
||||
you still can use one, because it is usually required for correct syntax
|
||||
highlighting in text editors.</p>
|
||||
<pre> lda foo ; this is a comment
|
||||
sta bar so it is
|
||||
tax #0 tax requires no operand, so #0 starts a comment
|
||||
</pre>
|
||||
<p><a name="new_pairing"/>You may put two instructions on the same line.
|
||||
In this case they have the same operand. For example:</p>
|
||||
<pre> eor:sta foo
|
||||
</pre>
|
||||
<p>is equivalent to</p>
|
||||
<pre> eor foo
|
||||
sta foo
|
||||
</pre>
|
||||
<p>Note that</p>
|
||||
<pre> lda:tax #0
|
||||
</pre><p>is allowed (<tt>#0</tt> is a comment for <tt>tax</tt>).</p>
|
||||
<h2>EXPRESSIONS</h2>
|
||||
<p>Expressions are numbers combined with operators and brackets.
|
||||
You should use square brackets, because parentheses are reserved
|
||||
for the indirect addressing.</p>
|
||||
<p>Numbers are 32-bit signed integers, in the range of -$7fffffff..$7fffffff.
|
||||
A number may be:</p>
|
||||
<ul>
|
||||
<li>a decimal number, e.g. <tt>-12345</tt></li>
|
||||
<li>a hexadecimal number, e.g. <tt>$abcd</tt></li>
|
||||
<li>a binary number, e.g. <tt>%10100101</tt></li>
|
||||
<li>an ASCII character, e.g. <tt>'a'</tt> or <tt>"a"</tt></li>
|
||||
<li>the origin counter value: <tt>*</tt></li>
|
||||
<li>a hardware register, e.g. <tt>^4e</tt></li>
|
||||
<li><a name="new_opcode"/>an op-code, e.g. <tt>{lda #0}</tt> equals
|
||||
<tt>$a9</tt></li>
|
||||
<li><a name="new_linecnt"/>the line repeat counter: <tt>#</tt></li>
|
||||
</ul>
|
||||
<p>Abbreviations of Atari hardware registers are provided to save you
|
||||
the trouble of typing two extra characters (<tt>^4e</tt> vs <tt>$d40e</tt>)
|
||||
and to ease porting software between Atari 8-bit computers and the Atari 5200
|
||||
console. These are very similar machines, one of the biggest differences is
|
||||
different location of hardware registers.</p>
|
||||
<table>
|
||||
<tr><th>Syntax</th><th>Chip</th>
|
||||
<th>Value in the Atari 8-bit<br/>computer mode (<tt>opt g-</tt>)</th>
|
||||
<th>Value in the Atari 5200<br/>game console mode (<tt>opt g+</tt>)</th>
|
||||
</tr>
|
||||
<tr><td><tt>^0x</tt></td><td>GTIA</td>
|
||||
<td><tt>$D00x</tt></td><td><tt>$C00x</tt></td></tr>
|
||||
<tr><td><tt>^1x</tt></td><td>GTIA</td>
|
||||
<td><tt>$D01x</tt></td><td><tt>$C01x</tt></td></tr>
|
||||
<tr><td><tt>^2x</tt></td><td>POKEY</td>
|
||||
<td><tt>$D20x</tt></td><td><tt>$E80x</tt></td></tr>
|
||||
<tr><td><tt>^3x</tt></td><td>PIA</td>
|
||||
<td><tt>$D30x</tt></td><td>error (there's no PIA chip)</td></tr>
|
||||
<tr><td><tt>^4x</tt></td><td>ANTIC</td>
|
||||
<td><tt>$D40x</tt></td><td><tt>$D40x</tt></td></tr>
|
||||
</table>
|
||||
<p>An op-code is the single-byte op-code of the instruction inside braces.
|
||||
The operand of the instruction is discarded and is necessary only for
|
||||
identifying the addressing mode. The instruction should begin just after
|
||||
the left brace and the right brace should immediately follow the operand
|
||||
or the instruction.
|
||||
<a name="new_op_op"/>You can skip the operand if the addressing mode
|
||||
is fixed. Examples:
|
||||
<tt>{lda #}</tt>, <tt>{jsr}</tt>, <tt>{bne}</tt>, <tt>{jmp ()}</tt>,
|
||||
<tt>{sta a:,x}</tt>.</p>
|
||||
<p>You can use the line repeat counter (<tt>#</tt>) in the repeated lines.
|
||||
It counts the iterations starting from zero. Examples:</p>
|
||||
<pre>:3 dta # ; generates three bytes: 00, 01, 02.
|
||||
line_lo :192 dta l(screen+40*#)
|
||||
line_hi :192 dta h(screen+40*#)
|
||||
dl :59 dta $4f,a(screen+40*#),0,$4f,a(screen+40*#),0
|
||||
</pre>
|
||||
<p>The follownig binary operators are supported:</p>
|
||||
<ul>
|
||||
<li><tt>+ </tt> Addition</li>
|
||||
<li><tt>- </tt> Subtraction</li>
|
||||
<li><tt>* </tt> Multiplication</li>
|
||||
<li><tt>/ </tt> Division</li>
|
||||
<li><tt>% </tt> Remainder</li>
|
||||
<li><tt>& </tt> Bitwise AND</li>
|
||||
<li><tt>| </tt> Bitwise OR</li>
|
||||
<li><tt>^ </tt> Bitwise XOR</li>
|
||||
<li><tt><<</tt> Arithmetic shift left</li>
|
||||
<li><tt>>></tt> Arithmetic shift right</li>
|
||||
<li><tt>= </tt> Equal</li>
|
||||
<li><tt>==</tt> Equal (same as <tt>=</tt>)</li>
|
||||
<li><tt><></tt> Not equal</li>
|
||||
<li><tt>!=</tt> Not equal (same as <tt><></tt>)</li>
|
||||
<li><tt>< </tt> Less than</li>
|
||||
<li><tt>> </tt> Greater than</li>
|
||||
<li><tt><=</tt> Less or equal</li>
|
||||
<li><tt>>=</tt> Greater or equal</li>
|
||||
<li><tt>&&</tt> Logical AND</li>
|
||||
<li><tt>||</tt> Logical OR</li>
|
||||
</ul>
|
||||
<p><a name="new_unary"/>The following unary operators are supported:</p>
|
||||
<ul>
|
||||
<li><tt>+ </tt> Plus (does nothing)</li>
|
||||
<li><tt>- </tt> Minus (changes the sign)</li>
|
||||
<li><tt>~ </tt> Bitwise NOT (complements all bits)</li>
|
||||
<li><tt>! </tt> Logical NOT (changes true to false and vice versa)</li>
|
||||
<li><tt>< </tt> Low (extracts the low byte)</li>
|
||||
<li><tt>> </tt> High (extracts the high byte)</li>
|
||||
</ul>
|
||||
<p>The operator precedence is following:</p>
|
||||
<table>
|
||||
<tr><td>first</td><td><tt>[]</tt></td>
|
||||
<td>(brackets)</td></tr>
|
||||
<tr><td> </td><td><tt>+ - ~ < ></tt></td>
|
||||
<td>(unary)</td></tr>
|
||||
<tr><td> </td><td><tt>* / % & << >></tt></td>
|
||||
<td>(binary)</td></tr>
|
||||
<tr><td> </td><td><tt>+ - | ^</tt></td>
|
||||
<td>(binary)</td></tr>
|
||||
<tr><td> </td><td><tt>= == <> != < > <= >=</tt></td>
|
||||
<td>(binary)</td></tr>
|
||||
<tr><td> </td><td><tt>!</tt></td>
|
||||
<td>(unary)</td></tr>
|
||||
<tr><td> </td><td><tt>&&</tt></td>
|
||||
<td>(binary)</td></tr>
|
||||
<tr><td>last </td><td><tt>||</tt></td>
|
||||
<td>(binary)</td></tr>
|
||||
</table>
|
||||
<p>Note that although the operators are similar to those used in C, C++
|
||||
and Java, their priorities are different than in these languages.</p>
|
||||
<p>Compare and logical operators assume that zero is false and a non-zero
|
||||
is true. They return 1 for true.</p>
|
||||
<p>While calculating an expression, signed 32-bit arithmetic is used.
|
||||
When range of 32 bits is exceeded, the '<tt>Arithmetic overflow</tt>' error
|
||||
is generated.</p>
|
||||
<h2>DIRECTIVES</h2>
|
||||
<dl>
|
||||
<dt><tt><b>EQU</b></tt> - assign a value of an expression to the label</dt>
|
||||
<dd>Note that a label represents a number, not a text macro.<br/>
|
||||
Examples:
|
||||
<pre>five equ 5
|
||||
here equ *
|
||||
</pre></dd>
|
||||
<dt><a name="new_opt"/><tt><b>OPT</b></tt> - set assembly options</dt>
|
||||
<dd>Five options are available:
|
||||
<ul>
|
||||
<li><tt>F</tt> - fill the space between <tt>ORG</tt>s
|
||||
with <tt>$FF</tt> bytes</li>
|
||||
<li><tt>G</tt> - Atari 5200 mode for hardware register abbreviations</li>
|
||||
<li><tt>H</tt> - generate Atari executable headers</li>
|
||||
<li><tt>L</tt> - generate listing</li>
|
||||
<li><tt>O</tt> - generate object file</li>
|
||||
</ul>
|
||||
You can turn any of these on or off.<br/>
|
||||
The default (if no <tt>OPT</tt> specified) is <tt>opt f-g-h+l+o+</tt>.<br/>
|
||||
Examples:
|
||||
<pre> opt l- listing off
|
||||
opt l+o- listing on, object file off
|
||||
opt f+g+h- useful for Atari 5200 cartridges - raw output format, 5200 hw regs
|
||||
</pre></dd>
|
||||
<dt><tt><b>ORG</b></tt> - change value of the origin counter</dt>
|
||||
<dd>You can set some options applied to the new header (if headers are
|
||||
enabled):
|
||||
<ul>
|
||||
<li><tt>a:</tt> tells <b>xasm</b> to always make a header, even it is
|
||||
unnecessary, like in <tt>ORG *</tt>.</li>
|
||||
<li><tt>f:</tt> works same as <tt>a:</tt>, but additionally tells to generate
|
||||
a <tt>$FF,$FF</tt> prefix before the header. <b>xasm</b> adds it
|
||||
at the beginning of the file by default, so use this option only if you want
|
||||
the <tt>$FF</tt>'s somewhere inside.</li>
|
||||
</ul>
|
||||
Examples:
|
||||
<pre> org $600
|
||||
org f:$700
|
||||
table org *+100
|
||||
</pre>
|
||||
In the latter example <tt>table</tt> points to 100 bytes
|
||||
of uninitialized data (label is assigned to <tt>*</tt>
|
||||
before the <tt>ORG</tt> directive is executed).
|
||||
<p><a name="new_orgr"/>Starting with version 2.6.0, <b>xasm</b> supports code
|
||||
that is relocated in the memory at runtime. Let's say you want your code
|
||||
to be run at the zero page. Typically you can't load it directly into this
|
||||
place, so you load it at a different address and then move at the runtime.
|
||||
<b>xasm</b> differentiates between the address that it used
|
||||
for code generation from the address that is used for generating
|
||||
Atari executable headers. <tt>org r:</tt> affects only the former one.
|
||||
Example:</p>
|
||||
<pre> org $8000
|
||||
ldx #code_length-1
|
||||
mva:rpl code_loaded,x z:code_zpage,x-
|
||||
jmp code_zpage
|
||||
|
||||
code_loaded
|
||||
org r:$30
|
||||
code_zpage
|
||||
jmp * ; ... or something more sensible
|
||||
code_length equ *-code_zpage
|
||||
</pre>
|
||||
<p>Note that both <tt>*</tt> and label definitions use the counter used
|
||||
for code generation. There is no direct access to the other counter,
|
||||
because I think this is not useful. If you really need it, you can
|
||||
always type something like:</p>
|
||||
<pre>where_am_i equ *-code_zpage+code_loaded
|
||||
</pre></dd>
|
||||
<dt><a name="new_dta"/><tt><b>DTA</b></tt> - define data</dt>
|
||||
<dd>There are various data types:
|
||||
<ul>
|
||||
<li>integers
|
||||
<ul>
|
||||
<li>bytes: <tt>b(200)</tt> or simply <tt>200</tt></li>
|
||||
<li>words: <tt>a(10000)</tt></li>
|
||||
<li>low bytes of words: <tt>l(511)</tt> defines byte 255</li>
|
||||
<li>high bytes of words: <tt>h(511)</tt> defines byte 1</li>
|
||||
</ul>
|
||||
You may enter many expressions in parentheses and combine different types
|
||||
of data in a single line, separating things with commas.<br/>
|
||||
You may also define a sine lookup table. The syntax is:<br/>
|
||||
<tt>sin(center,amp,size,first,last)</tt><br/>
|
||||
where:
|
||||
<ul>
|
||||
<li><tt>center</tt> is a number which is added to every sine value</li>
|
||||
<li><tt>amp</tt> is the sine amplitude</li>
|
||||
<li><tt>size</tt> is the sine period</li>
|
||||
<li><tt>first,last</tt> define range of values in the table.
|
||||
They are optional. The default are <tt>0,size-1</tt>.</li>
|
||||
</ul>
|
||||
Example: <tt>dta a(sin(0,1000,256,0,63))</tt> defines a table of 64 words
|
||||
representing a quarter of sine with the amplitude of 1000.</li>
|
||||
<li>real numbers: <tt>r(-1.23456e12)</tt><br/>
|
||||
Real numbers are written in the 6-byte Atari Floating-Point format.</li>
|
||||
<li>text strings
|
||||
<ul>
|
||||
<li>ASCII strings: <tt>c'Text'</tt> or <tt>c"Text"</tt></li>
|
||||
<li>ANTIC strings: <tt>d'Text'</tt> or <tt>d"Text"</tt></li>
|
||||
</ul>
|
||||
A character string consists of any of characters surrounded by quotation
|
||||
marks. Within a string, a single quotation mark character is
|
||||
represented by two succesive quotation marks.<br/>
|
||||
Placing a <tt>*</tt> character after a string inverts
|
||||
the highest bit in every byte of the string.</li>
|
||||
</ul>
|
||||
Examples of <tt>DTA</tt>:
|
||||
<pre>
|
||||
dta b(1,2),3,a(1000,-1),l(12345,sin(0,127,256))
|
||||
dta d"ANTIC"*,c'It''s a string',$9b
|
||||
</pre></dd>
|
||||
<dt><tt><b>ICL</b></tt> - include another source file</dt>
|
||||
<dd>Specifies another file to be included in the assembly as if the contents
|
||||
of the referenced file appeared in place of the <tt>ICL</tt> statement.
|
||||
The included file may contain other <tt>ICL</tt> statements.
|
||||
The <tt>.ASX</tt> extension is added if none given.<br/>
|
||||
Examples:
|
||||
<pre>
|
||||
icl 'macros.asx'
|
||||
icl 'c:\atari\xasm\fileio'
|
||||
</pre></dd>
|
||||
<dt><tt><b>END</b></tt> - end assembling file</dt>
|
||||
<dd>Remaining part of the file is not assembled. If this statement does
|
||||
not occur, the assembler stops assembling when it encounters the end
|
||||
of the file.<br/>
|
||||
Example:
|
||||
<pre>
|
||||
end
|
||||
</pre></dd>
|
||||
<dt><tt><b>INS</b></tt> - insert contents of file</dt>
|
||||
<dd>Copies every byte of the specified file into the object file and updates
|
||||
the origin counter, as if these bytes were defined with <tt>DTA</tt>.<br/>
|
||||
You may specify a range of the inserted file. The syntax is following:
|
||||
<pre>
|
||||
ins 'file'[,offset[,length]]
|
||||
</pre>
|
||||
The first byte in a file has the offset of zero.<br/>
|
||||
If the offset is negative, it is counted from the end of the file.<br/>
|
||||
Examples:
|
||||
<pre>
|
||||
ins 'picture.raw'
|
||||
ins 'file',-256 insert last 256 bytes of file
|
||||
ins 'file',10,10 insert bytes 10..19 of file
|
||||
</pre></dd>
|
||||
<dt><tt><b>RUN</b></tt> - generate run address</dt>
|
||||
<dd>An Atari executable program should specify a run address.
|
||||
A program may be loaded in many areas of the memory and started from any
|
||||
address.
|
||||
<pre> run addr
|
||||
</pre>
|
||||
is equivalent to:
|
||||
<pre> org $2e0
|
||||
dta a(addr)
|
||||
</pre>
|
||||
Example:
|
||||
<pre> run main
|
||||
</pre></dd>
|
||||
<dt><tt><b>INI</b></tt> - generate init address</dt>
|
||||
<dd>An Atari executable program may have some routines which are executed
|
||||
during the loading process. There may be many init blocks in one file.<br/>
|
||||
Example:
|
||||
<pre> ini showpic
|
||||
</pre></dd>
|
||||
<dt><tt><b>ERT</b></tt> - generate an error if an expression is true</dt>
|
||||
<dd>Examples:
|
||||
<pre> ert *>$c000
|
||||
ert len1>$ff||len2>$ff
|
||||
</pre></dd>
|
||||
<dt><a name="new_eli"/><tt><b>IFT</b></tt> - assemble if expression is
|
||||
true<br/>
|
||||
<tt><b>ELI</b></tt> - else if<br/>
|
||||
<tt><b>ELS</b></tt> - else<br/>
|
||||
<tt><b>EIF</b></tt> - end if</dt>
|
||||
<dd>With these directives you can construct fragments which
|
||||
are assembled when a condition is met.
|
||||
Conditional constructions can be nested.<br/>
|
||||
Example:
|
||||
<pre>noscr equ 1
|
||||
widescr equ 1
|
||||
ift noscr
|
||||
lda #0
|
||||
eli widescr
|
||||
lda #$23
|
||||
els
|
||||
lda #$22
|
||||
eif
|
||||
sta $22f
|
||||
</pre>
|
||||
The above example can be rewritten using the line repeating feature:
|
||||
<pre>noscr equ 1
|
||||
widescr equ 1
|
||||
:noscr lda #0
|
||||
:!noscr&&widescr lda #$23
|
||||
:!noscr&&!widescr lda #$22
|
||||
sta $22f
|
||||
</pre></dd>
|
||||
</dl>
|
||||
<h2>PSEUDO-COMMANDS</h2>
|
||||
<p>Pseudo-commands are built-in macros.</p>
|
||||
<dl>
|
||||
<dt><tt><b>ADD</b></tt> - addition without carry</dt>
|
||||
<dd>If you have ever programmed a 6502, you must have noticed that you had
|
||||
to use a <tt>CLC</tt> before <tt>ADC</tt> for every simple addition.<br/>
|
||||
<b>xasm</b> can do it for you. <tt>ADD</tt> replaces two instructions:
|
||||
<tt>CLC</tt> and <tt>ADC</tt>.</dd>
|
||||
<dt><tt><b>SUB</b></tt> - subtraction</dt>
|
||||
<dd>It is <tt>SEC</tt> and <tt>SBC</tt>.</dd>
|
||||
<dt><a name="new_repskip"/><tt><b>RCC, RCS, REQ, RMI, RNE, RPL, RVC,
|
||||
RVS</b></tt> - conditional repeat</dt>
|
||||
<dd>These are branches to the previous instruction.
|
||||
They take no operand, because the branch target
|
||||
is the address of previously assembled instruction.<br/>
|
||||
Example:
|
||||
<pre> ldx #0
|
||||
mva:rne $500,x $600,x+
|
||||
</pre>
|
||||
The example code copies memory $500-$5ff to $600-$6ff.
|
||||
Here is the same written with standard 6502 commands only:
|
||||
<pre> ldx #0
|
||||
loop lda $500,x
|
||||
sta $600,x
|
||||
inx
|
||||
bne loop
|
||||
</pre></dd>
|
||||
<dt><tt><b>SCC, SCS, SEQ, SMI, SNE, SPL, SVC, SVS</b></tt> - conditional
|
||||
skip</dt>
|
||||
<dd>These are branches over the next instructions. No operand is required,
|
||||
because the target is the address of the instruction following
|
||||
the next instruction.<br/>
|
||||
Example:
|
||||
<pre> lda #40
|
||||
add:sta $80
|
||||
scc:inc $81
|
||||
</pre>
|
||||
In the above example the word-sized variable $80 is incremented by 40.</dd>
|
||||
<dt><tt><b>JCC, JCS, JEQ, JMI, JNE, JPL, JVC, JVS</b></tt> - conditional
|
||||
jumps</dt>
|
||||
<dd>These are a kind of 'long' branches. While standard branches
|
||||
(such as <tt>BNE</tt>) have range of -128..+127, these jumps have range
|
||||
of all 64 kB.<br/>
|
||||
Example:
|
||||
<pre> jne dest
|
||||
</pre>is equivalent to:
|
||||
<pre> seq:jmp dest
|
||||
</pre></dd>
|
||||
<dt><tt><b>INW</b></tt> - increment word</dt>
|
||||
<dd>Increments a 16-bit word in the memory.<br/>
|
||||
Example:
|
||||
<pre> inw dest
|
||||
</pre>is equivalent to:
|
||||
<pre> inc dest
|
||||
sne:inc dest+1
|
||||
</pre></dd>
|
||||
<dt><tt><b>MVA, MVX, MVY</b></tt> - move byte using accumulator, X or Y</dt>
|
||||
<dd>Each of these pseudo-commands requires two operands
|
||||
and substitutes two commands:
|
||||
<pre> mva source dest = lda source : sta dest
|
||||
mvx source dest = ldx source : stx dest
|
||||
mvy source dest = ldy source : sty dest
|
||||
</pre></dd>
|
||||
<dt><a name="new_mwinde"/><tt><b>MWA, MWX, MWY</b></tt> - move word using
|
||||
accumulator, X or Y</dt>
|
||||
<dd>These pseudo-commands require two operands
|
||||
and are combinations of two <tt>MV*</tt>'s:
|
||||
one to move the low byte, and the other to move the high byte.<br/>
|
||||
You can't use indirect nor pseudo addressing mode with <tt>MW*</tt>.
|
||||
Destination must be an absolute address (optionally indexed).<br/>
|
||||
When source is also absolute, an <tt>mw* source dest</tt> will be:
|
||||
<pre> mv* source dest
|
||||
mv* source+1 dest+1
|
||||
</pre>
|
||||
When source is an immediate, an <tt>mw* #immed dest</tt> will be:
|
||||
<pre> mv* <immed dest
|
||||
mv* >immed dest+1
|
||||
</pre>
|
||||
When <tt><immed</tt> equals <tt>>immed</tt> and <tt>immed</tt>
|
||||
is not forward-referenced, <b>xasm</b> uses an optimization:
|
||||
<pre> mv* <immed dest
|
||||
st* dest+1
|
||||
</pre>
|
||||
If possible, <tt>MWX</tt> and <tt>MWY</tt> use increment/decrement
|
||||
commands. E.g. <tt>mwx #1 dest</tt> is assembled as:
|
||||
<pre> ldx #1
|
||||
stx dest
|
||||
dex
|
||||
stx dest+1
|
||||
</pre></dd>
|
||||
</dl>
|
||||
<h2>ADDRESSING MODES</h2>
|
||||
<p>All addressing modes are entered in the standard 6502 convention except for
|
||||
the accumulator addressing mode, which should be marked with
|
||||
the <tt>@</tt> character (as in Quick Assembler).</p>
|
||||
<p>There are two extra immediate addressing modes:
|
||||
<tt><</tt> and <tt>></tt>,
|
||||
which use the low/high byte of a 16-bit word constant.
|
||||
They are for Quick Assembler compatibility.
|
||||
You can use traditional <tt>#<</tt> and <tt>#></tt>.
|
||||
Note <tt>lda >$ff+5</tt> loads 1 (<tt>>$104</tt>),
|
||||
while <tt>lda #>$ff+5</tt>
|
||||
loads 5 (<tt>0+5</tt>) to the accumulator, because the unary operator
|
||||
<tt>></tt> has a higher priority than the binary plus.</p>
|
||||
<p>In absolute addressing modes, <b>xasm</b> examines the expression
|
||||
and uses zero-page addressing mode if it supposes it's possible.
|
||||
You may override it with <tt>a:</tt> and <tt>z:</tt> prefixes.</p>
|
||||
<p>Examples:</p>
|
||||
<pre>
|
||||
nop
|
||||
asl @
|
||||
lda >$1234 assembles to lda #$12
|
||||
lda $100,x
|
||||
lda a:0 generates 16-bit address
|
||||
jmp ($0a)
|
||||
lda ($80),y
|
||||
</pre>
|
||||
<p>There are also pseudo addressing modes, which are similar to
|
||||
pseudo-commands. You may use them just like standard addressing modes
|
||||
in all 6502 commands and pseudo-commands, except for
|
||||
<tt>MWA</tt>, <tt>MWX</tt> and <tt>MWY</tt>:</p>
|
||||
<pre> cmd a,x+ = cmd a,x : inx
|
||||
cmd a,x- = cmd a,x : dex
|
||||
cmd a,y+ = cmd a,y : iny
|
||||
cmd a,y- = cmd a,y : dey
|
||||
cmd (z),y+ = cmd (z),y : iny
|
||||
cmd (z),y- = cmd (z),y : dey
|
||||
cmd (z,0) = ldx #0 : cmd (z,x)
|
||||
cmd (z),0 = ldy #0 : cmd (z),y
|
||||
<a name="new_adrmodes"/> cmd (z),0+ = ldy #0 : cmd (z),y : iny
|
||||
cmd (z),0- = ldy #0 : cmd (z),y : dey
|
||||
</pre>
|
||||
<h2>CHANGES</h2>
|
||||
<h3>Version 2.6.0 (2005-02-07)</h3>
|
||||
<ul>
|
||||
<li>long file names are supported under Windows</li>
|
||||
<li><a href="#new_orgr">support for code that is relocated at runtime</a></li>
|
||||
<li><a href="#new_linecnt">line repeat counter</a></li>
|
||||
<li>label values are now 32-bit, not just 17-bit</li>
|
||||
<li>command-line options <tt>/n</tt> and <tt>/s</tt> are no longer
|
||||
supported</li>
|
||||
<li>fatal I/O errors (such as floppy not ready) no longer print the annoying
|
||||
'<tt>Abort, Retry, Ignore</tt>' message</li>
|
||||
</ul>
|
||||
<h3>Version 2.5.2 (2002-10-03)</h3>
|
||||
<ul>
|
||||
<li>version 2.5.1 broke Unix EOLs - fixed</li>
|
||||
<li>version 2.5.1 omitted all blank/comment/label lines, unless <tt>/c</tt>
|
||||
was used</li>
|
||||
</ul>
|
||||
<h3>Version 2.5.1 (2002-08-21)</h3>
|
||||
<ul>
|
||||
<li>fixed assembling sources with Atari EOLs</li>
|
||||
<li>blank/comment/label lines in false conditionals are now correctly omitted
|
||||
in listing</li>
|
||||
</ul>
|
||||
<h3>Version 2.5 (2002-07-08)</h3>
|
||||
<ul>
|
||||
<li>fixed another bug, very similar to the previous one, e.g.
|
||||
<pre> ift 0
|
||||
:label nop
|
||||
eif
|
||||
</pre>
|
||||
reported <tt>Label not defined before</tt> error for the repeat count</li>
|
||||
<li><a href="#new_opt"><tt>OPT F+</tt> causes <tt>ORG</tt>s to fill the space
|
||||
between the old and the new location with <tt>$FF</tt>s</a></li>
|
||||
<li><a href="#new_opt"><tt>OPT G+</tt> enables Atari 5200 mode for hardware
|
||||
register abbreviations</a></li>
|
||||
</ul>
|
||||
<h3>Version 2.4.1 (2002-06-27)</h3>
|
||||
<ul>
|
||||
<li>fixed a bug related to label definitions in conditionally skipped code,
|
||||
e.g.
|
||||
<pre> ift 0
|
||||
label
|
||||
eif
|
||||
</pre>
|
||||
reported <tt>No ORG specified</tt> error for the label definition</li>
|
||||
</ul>
|
||||
<h3>Version 2.4 (2002-05-22)</h3>
|
||||
<ul>
|
||||
<li>fixed a bug causing incorrect unary operator precedence</li>
|
||||
<li>fixed wrong label value after a skip pseudo-command</li>
|
||||
<li>the assembler is .EXE (.COM caused problems with DJGPP make due
|
||||
to a bug in the DJGPP runtime)</li>
|
||||
<li>the assembler is not compressed (so it occupies less space in the ZIP)</li>
|
||||
<li>improved command-line parsing: options may be used before source file
|
||||
name, tab character is a valid separator, <tt>/</tt> may be used as a directory
|
||||
separator</li>
|
||||
<li>error and warning messages are written to stderr, not stdout</li>
|
||||
<li>added <tt>==</tt> (equals) operator, which is equivalent to
|
||||
<tt>=</tt>(but is more natural for C/C++/Java programmers)</li>
|
||||
<li><a href="#new_deflabel">added <tt>/d:label=value</tt> option: define
|
||||
a label</a></li>
|
||||
<li><a href="#new_fullpaths">added <tt>/p</tt> option: print full paths
|
||||
in listing and error messages</a></li>
|
||||
<li><a href="#new_quiet">added <tt>/q</tt> option: quiet mode</a></li>
|
||||
<li><a href="#new_unlabels">added <tt>/u</tt> option: warn of unused
|
||||
labels</a></li>
|
||||
<li><a href="#new_opt">writing to the object file may be suppressed
|
||||
with <tt>OPT O-</tt></a></li>
|
||||
<li><a href="#new_eli">added <tt>ELI</tt> (else if) directive</a></li>
|
||||
<li><a href="#new_mwinde"><tt>MWX</tt> and <tt>MWY</tt> may use
|
||||
<tt>INX</tt>/<tt>DEX</tt> and <tt>INY</tt>/<tt>DEY</tt>, respectively,
|
||||
for generating smaller code</a></li>
|
||||
</ul>
|
||||
<h3>Version 2.3 (2002-02-10)</h3>
|
||||
<ul>
|
||||
<li>double skip (e.g. <tt>SCC:SNE</tt>) bug fixed</li>
|
||||
<li>real number two-digit exponent bug fixed</li>
|
||||
<li>trailing spaces in a listing line are now truncated</li>
|
||||
<li>label definitions allowed in blank, comment and repeated lines</li>
|
||||
<li><a href="#new_unary">unary operators</a></li>
|
||||
<li><a href="#new_dta"><tt>DTA</tt> implied byte mode</a></li>
|
||||
<li><a href="#new_op_op">operand can be skipped for some op-codes</a></li>
|
||||
</ul>
|
||||
<h3>Version 2.2 (1999-09-10)</h3>
|
||||
<ul>
|
||||
<li>invalid absolute <tt>CPX</tt> and <tt>CPY</tt> op-codes fixed</li>
|
||||
<li>fixed: addressing mode not checked for branch commands</li>
|
||||
<li><tt>ICL</tt> in last line bug fixed</li>
|
||||
<li><tt>OPT H-H+</tt> bug fixed</li>
|
||||
<li>first <tt>ORG *</tt> bug fixed</li>
|
||||
<li>origin setting not required until it is used</li>
|
||||
<li>Unix ($0a), Macintosh ($0d) and Atari ($9b) EOLs allowed in the source</li>
|
||||
<li>value of 'true' changed to 1</li>
|
||||
<li><a href="#new_environment">setting environment variables on error
|
||||
option</a></li>
|
||||
<li>assembling only if source newer than object option</li>
|
||||
<li><a href="#new_opcode">op-code extracting</a></li>
|
||||
<li><a href="#new_linerep">line repeating</a></li>
|
||||
<li><a href="#new_pairing">instructions pairing</a></li>
|
||||
<li><a href="#new_repskip">conditional repeat and skip pseudo commands</a></li>
|
||||
<li><a href="#new_adrmodes"><tt>(),0+</tt> and <tt>(),0-</tt> pseudo
|
||||
addressing modes</a></li>
|
||||
</ul>
|
||||
<h3>Version 2.0 (1998-11-12)</h3>
|
||||
<ul>
|
||||
<li>truncating name of object bug fixed</li>
|
||||
<li><tt>EQU</tt> and <tt>DTA</tt> forward reference bugs fixed</li>
|
||||
<li>hex number recognizing bug fixed</li>
|
||||
<li>now <tt>.OBX</tt> is the default extension for Atari executables</li>
|
||||
<li>assembling options (switches and <tt>OPT</tt> directive)</li>
|
||||
<li>listing generation</li>
|
||||
<li>label table generation</li>
|
||||
<li>conditional assembly</li>
|
||||
<li>user errors</li>
|
||||
<li>warnings</li>
|
||||
<li>improved headers generation</li>
|
||||
<li>improved expressions - 19 operators and brackets, 32-bit arithmetic</li>
|
||||
<li>improved signed numbers</li>
|
||||
<li>6 new pseudo commands (memory-to-memory move)</li>
|
||||
<li>8 pseudo addressing modes</li>
|
||||
<li>indirect conditional jumps</li>
|
||||
<li>Atari floating-point numbers generation</li>
|
||||
<li>improved <tt>INS</tt>: inserting specified part of file</li>
|
||||
</ul>
|
||||
<h3>Version 1.2 (1998-08-14)</h3>
|
||||
<ul>
|
||||
<li>first release</li>
|
||||
</ul>
|
||||
<h2>AUTHOR</h2>
|
||||
<p>Piotr Fusik (<a href="mailto:fox@scene.pl">fox@scene.pl</a>)</p>
|
||||
<h2>SEE ALSO</h2>
|
||||
<p><a href="editors.htm">How to configure a text editor for a convenient use
|
||||
of xasm</a></p>
|
||||
<p>xasm home page
|
||||
(<a href="http://xasm.atari.org">http://xasm.atari.org</a>)</p>
|
||||
</body>
|
||||
</html>
|
|
@ -0,0 +1,5 @@
|
|||
name "xasm"
|
||||
description "6502 cross-assembler with original syntax extensions"
|
||||
authors "Piotr Fusik"
|
||||
copyright "Copyright © 1998-2021, Piotr Fusik"
|
||||
license "poetic"
|
File diff suppressed because it is too large
Load Diff
|
@ -1,56 +0,0 @@
|
|||
# xasm syntax for Code-Genie 3.0 (www.code-genie.com)
|
||||
# written by Piotr Fusik <fox@scene.pl>
|
||||
|
||||
CaseInsensitive true
|
||||
|
||||
FgColor #000000
|
||||
|
||||
BlockStart comment1 *\s
|
||||
BlockEnd comment1 \n
|
||||
Format comment1 b
|
||||
FgColor comment1 #009300
|
||||
|
||||
BlockStart comment2 ;
|
||||
BlockEnd comment2 \n
|
||||
FgColor comment2 #009300
|
||||
|
||||
BlockStart comment3 |\s
|
||||
BlockEnd comment3 \n
|
||||
FgColor comment3 #009300
|
||||
|
||||
BlockStart string1 '
|
||||
BlockEnd string1 \n
|
||||
BlockEnd string1 '
|
||||
BlockNotEnd string1 ''
|
||||
FgColor string1 #800080
|
||||
|
||||
BlockStart string2 "
|
||||
BlockEnd string2 \n
|
||||
BlockEnd string2 "
|
||||
BlockNotEnd string2 ""
|
||||
FgColor string2 #800080
|
||||
|
||||
KeywordGroup keywords
|
||||
adc add and asl bcc bcs beq bit
|
||||
bmi bne bpl brk bvc bvs clc cld
|
||||
cli clv cmp cpx cpy dec dex dey
|
||||
dta eif eli els end eor equ ert
|
||||
icl ift inc ini ins inw inx iny
|
||||
jcc jcs jeq jmi jmp jne jpl jsr
|
||||
jvc jvs lda ldx ldy lsr mva mvx
|
||||
mvy mwa mwx mwy nop opt ora org
|
||||
pha php pla plp rcc rcs req rmi
|
||||
rne rol ror rpl rti rts run rvc
|
||||
rvs sbc scc scs sec sed sei seq
|
||||
smi sne spl sta stx sty sub svc
|
||||
svs tax tay tsx txa txs tya
|
||||
FgColor keywords #0000ff
|
||||
|
||||
Nest comment1
|
||||
Nest comment2
|
||||
Nest comment3
|
||||
Nest string1
|
||||
Nest string2
|
||||
Nest keywords
|
||||
|
||||
# eof
|
|
@ -1,55 +0,0 @@
|
|||
// xasm highlighter for ConTEXT v0.97.1 (www.fixedsys.com/context)
|
||||
// written by Piotr Fusik <fox@scene.pl>
|
||||
|
||||
Language: xasm
|
||||
Filter: xasm files (*.asx)|*.asx
|
||||
HelpFile:
|
||||
|
||||
CaseSensitive: 0
|
||||
|
||||
LineComment: ;
|
||||
BlockCommentBeg:
|
||||
BlockCommentEnd:
|
||||
|
||||
IdentifierBegChars: a..z A..Z _
|
||||
IdentifierChars: a..z A..Z _ 0..9
|
||||
|
||||
NumConstBegChars: 0..9
|
||||
NumConstChars: 0..9 abcdefABCDEF
|
||||
|
||||
EscapeChar:
|
||||
|
||||
KeyWords1: adc add and asl bcc bcs beq bit
|
||||
bmi bne bpl brk bvc bvs clc cld
|
||||
cli clv cmp cpx cpy dec dex dey
|
||||
dta eif eli els end eor equ ert
|
||||
icl ift inc ini ins inw inx iny
|
||||
jcc jcs jeq jmi jmp jne jpl jsr
|
||||
jvc jvs lda ldx ldy lsr mva mvx
|
||||
mvy mwa mwx mwy nop opt ora org
|
||||
pha php pla plp rcc rcs req rmi
|
||||
rne rol ror rpl rti rts run rvc
|
||||
rvs sbc scc scs sec sed sei seq
|
||||
smi sne spl sta stx sty sub svc
|
||||
svs tax tay tsx txa txs tya
|
||||
|
||||
StringBegChar: '
|
||||
StringEndChar: '
|
||||
MultilineStrings: 0
|
||||
|
||||
UsePreprocessor: 0
|
||||
|
||||
CurrLineHighlighted: 0
|
||||
|
||||
SpaceCol: clWindowText clWindow
|
||||
Keyword1Col: clBlue clWindow
|
||||
Keyword2Col: clBlue clWindow
|
||||
Keyword3Col: clBlue clWindow
|
||||
IdentifierCol: clWindowText clWindow
|
||||
CommentCol: clGreen clWindow
|
||||
NumberCol: clWindowText clWindow
|
||||
StringCol: clPurple clWindow
|
||||
SymbolCol: clWindowText clWindow
|
||||
PreprocessorCol: clWindowText clWindow
|
||||
SelectionCol: clWhite clNavy
|
||||
CurrentLineCol: clBlack clYellow
|
134
syntax/xasm.ini
134
syntax/xasm.ini
|
@ -1,134 +0,0 @@
|
|||
# xasm highlighter for PSPad 4.2.1 (pspad.zde.cz)
|
||||
# written by Piotr Fusik <fox@scene.pl>
|
||||
[Settings]
|
||||
Name=xasm
|
||||
HTMLGroup=0
|
||||
FileType=*.asx
|
||||
CommentString=
|
||||
ANSIComment=0
|
||||
PasComment=0
|
||||
SlashComment=0
|
||||
CComment=0
|
||||
SpecComment=0
|
||||
BasComment=1
|
||||
FoxComment=0
|
||||
REMComment=0
|
||||
ExclComment=0
|
||||
ByComment=0
|
||||
SharpComment=0
|
||||
SlashComment=0
|
||||
PerCentComment=0
|
||||
SinglQComment=0
|
||||
DblQComment=0
|
||||
SQLComment=0
|
||||
SingleQuote=1
|
||||
DoubleQuote=1
|
||||
Preprocessors=0
|
||||
IndentChar=
|
||||
UnIndentChar=
|
||||
TabWidth=0
|
||||
[KeyWords]
|
||||
ADC=
|
||||
ADD=
|
||||
AND=
|
||||
ASL=
|
||||
BCC=
|
||||
BCS=
|
||||
BEQ=
|
||||
BIT=
|
||||
BMI=
|
||||
BNE=
|
||||
BPL=
|
||||
BRK=
|
||||
BVC=
|
||||
BVS=
|
||||
CLC=
|
||||
CLD=
|
||||
CLI=
|
||||
CLV=
|
||||
CMP=
|
||||
CPX=
|
||||
CPY=
|
||||
DEC=
|
||||
DEX=
|
||||
DEY=
|
||||
EOR=
|
||||
INC=
|
||||
INW=
|
||||
INX=
|
||||
INY=
|
||||
JCC=
|
||||
JCS=
|
||||
JEQ=
|
||||
JMI=
|
||||
JMP=
|
||||
JNE=
|
||||
JPL=
|
||||
JSR=
|
||||
JVC=
|
||||
JVS=
|
||||
LDA=
|
||||
LDX=
|
||||
LDY=
|
||||
LSR=
|
||||
MVA=
|
||||
MVX=
|
||||
MVY=
|
||||
MWA=
|
||||
MWX=
|
||||
MWY=
|
||||
NOP=
|
||||
ORA=
|
||||
PHA=
|
||||
PHP=
|
||||
PLA=
|
||||
PLP=
|
||||
RCC=
|
||||
RCS=
|
||||
REQ=
|
||||
RMI=
|
||||
RNE=
|
||||
ROL=
|
||||
ROR=
|
||||
RPL=
|
||||
RTI=
|
||||
RTS=
|
||||
RVC=
|
||||
RVS=
|
||||
SBC=
|
||||
SCC=
|
||||
SCS=
|
||||
SEC=
|
||||
SED=
|
||||
SEI=
|
||||
SEQ=
|
||||
SMI=
|
||||
SNE=
|
||||
SPL=
|
||||
STA=
|
||||
STX=
|
||||
STY=
|
||||
SUB=
|
||||
SVC=
|
||||
SVS=
|
||||
TAX=
|
||||
TAY=
|
||||
TSX=
|
||||
TXA=
|
||||
TXS=
|
||||
TYA=
|
||||
[ReservedWords]
|
||||
DTA=
|
||||
EIF=
|
||||
ELI=
|
||||
ELS=
|
||||
END=
|
||||
EQU=
|
||||
ERT=
|
||||
ICL=
|
||||
IFT=
|
||||
INI=
|
||||
INS=
|
||||
OPT=
|
||||
ORG=
|
||||
RUN=
|
133
syntax/xasm.stx
133
syntax/xasm.stx
|
@ -1,133 +0,0 @@
|
|||
#TITLE=xasm
|
||||
; xasm syntax file for EditPlus 2.11 (www.editplus.com)
|
||||
; written by Piotr Fusik <fox@scene.pl>
|
||||
|
||||
#DELIMITER=+-*/%&|^!~=<>()[]{},:"#
|
||||
#QUOTATION1='
|
||||
#QUOTATION2="
|
||||
#CONTINUE_QUOTE=n
|
||||
#LINECOMMENT=;
|
||||
#LINECOMMENT2=^!*
|
||||
#COMMENTON=
|
||||
#COMMENTOFF=
|
||||
#COMMENTON2=
|
||||
#COMMENTOFF2=
|
||||
#ESCAPE=
|
||||
#CASE=n
|
||||
#PREFIX1=
|
||||
#PREFIX2=
|
||||
#PREFIX3=
|
||||
#PREFIX4=
|
||||
#PREFIX5=
|
||||
#SUFFIX1=
|
||||
#SUFFIX2=
|
||||
#SUFFIX3=
|
||||
#SUFFIX4=
|
||||
#SUFFIX5=
|
||||
|
||||
#KEYWORD=Keywords
|
||||
|
||||
adc
|
||||
add
|
||||
and
|
||||
asl
|
||||
bcc
|
||||
bcs
|
||||
beq
|
||||
bit
|
||||
bmi
|
||||
bne
|
||||
bpl
|
||||
brk
|
||||
bvc
|
||||
bvs
|
||||
clc
|
||||
cld
|
||||
cli
|
||||
clv
|
||||
cmp
|
||||
cpx
|
||||
cpy
|
||||
dec
|
||||
dex
|
||||
dey
|
||||
dta
|
||||
eif
|
||||
eli
|
||||
els
|
||||
end
|
||||
eor
|
||||
equ
|
||||
ert
|
||||
icl
|
||||
ift
|
||||
inc
|
||||
ini
|
||||
ins
|
||||
inw
|
||||
inx
|
||||
iny
|
||||
jcc
|
||||
jcs
|
||||
jeq
|
||||
jmi
|
||||
jmp
|
||||
jne
|
||||
jpl
|
||||
jsr
|
||||
jvc
|
||||
jvs
|
||||
lda
|
||||
ldx
|
||||
ldy
|
||||
lsr
|
||||
mva
|
||||
mvx
|
||||
mvy
|
||||
mwa
|
||||
mwx
|
||||
mwy
|
||||
nop
|
||||
opt
|
||||
ora
|
||||
org
|
||||
pha
|
||||
php
|
||||
pla
|
||||
plp
|
||||
rcc
|
||||
rcs
|
||||
req
|
||||
rmi
|
||||
rne
|
||||
rol
|
||||
ror
|
||||
rpl
|
||||
rti
|
||||
rts
|
||||
run
|
||||
rvc
|
||||
rvs
|
||||
sbc
|
||||
scc
|
||||
scs
|
||||
sec
|
||||
sed
|
||||
sei
|
||||
seq
|
||||
smi
|
||||
sne
|
||||
spl
|
||||
sta
|
||||
stx
|
||||
sty
|
||||
sub
|
||||
svc
|
||||
svs
|
||||
tax
|
||||
tay
|
||||
tsx
|
||||
txa
|
||||
txs
|
||||
tya
|
||||
#
|
BIN
www/cgenie.gif
BIN
www/cgenie.gif
Binary file not shown.
Before Width: | Height: | Size: 12 KiB |
|
@ -1,79 +0,0 @@
|
|||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
||||
<head>
|
||||
<title>xasm</title>
|
||||
<meta name="Description" content="xasm is a 6502 cross-assembler for DOS/Windows."/>
|
||||
<meta name="Keywords" content="xasm,6502,cross-assembler,atari"/>
|
||||
<meta name="Author" content="Piotr Fusik"/>
|
||||
</head>
|
||||
<body style="background-color: #c0ffc0">
|
||||
<h1>xasm.atari.org</h1>
|
||||
<p><b>xasm</b> is a 6502 cross-assembler for DOS/Windows.
|
||||
It is mainly targeted at Atari 8-bit computers,
|
||||
but it can be also used for programming
|
||||
Atari 2600/5200/Lynx, Commodore C64, Apple ][ and others.
|
||||
<b>xasm</b> is freeware.</p>
|
||||
<p><a href="xasm260.zip">Download version 2.6.0
|
||||
(22 KB, includes full documentation)</a></p>
|
||||
<p><b>xasm</b> no longer includes the tools X-BOOT, X-LOAD and X-HEAD.
|
||||
If you really need them,
|
||||
<a href="xasm252.zip">download version 2.5.2 (38 KB)</a>.</p>
|
||||
<h3>Target audience</h3>
|
||||
<p><b>xasm</b> is for people who are fluent in the 6502 assembly language.
|
||||
There is no sample code for beginners, no easy-to-use libraries.
|
||||
You are warned that programming 8-bit machines in the assembly language
|
||||
is a tedious work.</p>
|
||||
<p>There are several 6502 cross-assemblers to choose from and new ones
|
||||
still appear. Just search the web. Make sure to not overlook
|
||||
the <a href="http://www.cc65.org">cc65</a> compiler which includes
|
||||
a cross-assembler, portable across many host and target platforms.</p>
|
||||
<h3>Features</h3>
|
||||
<p>Although <b>xasm</b> does not support user-defined macros, it has a rich
|
||||
set of built-in facilities.</p>
|
||||
<p>Here is some typical 6502 code (also valid in <b>xasm</b>):</p>
|
||||
<pre>
|
||||
lda #<dest
|
||||
sta ptr
|
||||
lda #>dest
|
||||
sta ptr+1
|
||||
ldx #192
|
||||
do_line
|
||||
ldy #39
|
||||
do_byte
|
||||
lda pattern,y
|
||||
sta (ptr),y
|
||||
dey
|
||||
bpl do_byte
|
||||
lda #40
|
||||
clc
|
||||
adc ptr
|
||||
sta ptr
|
||||
bcc skip
|
||||
inc ptr+1
|
||||
skip
|
||||
dex
|
||||
bne do_line
|
||||
</pre>
|
||||
<p>And here is the same code rewritten in a xasm-specific way:</p>
|
||||
<pre>
|
||||
mwa #dest ptr
|
||||
ldx #192
|
||||
do_line
|
||||
ldy #39
|
||||
mva:rpl pattern,y (ptr),y-
|
||||
lda #40
|
||||
add:sta ptr
|
||||
scc:inc ptr+1
|
||||
dex:bne do_line
|
||||
</pre>
|
||||
<h3>Usage</h3>
|
||||
<p>Although <b>xasm</b> comes with no editor, the documentation
|
||||
describes integration (syntax highlighting and single-keystroke compilation)
|
||||
with a few general-purpose text editors. Here is a screenshot
|
||||
of the <a href="http://www.code-genie.com">Code-Genie</a> editor:</p>
|
||||
<p><img src="cgenie.gif" alt="6502 code in Code-Genie"/></p>
|
||||
<hr/>
|
||||
<p><i>Hosted by <a href="http://atariarea.histeria.pl">Atari Area</a></i></p>
|
||||
</body>
|
||||
</html>
|
|
@ -0,0 +1,925 @@
|
|||
XASM (1)
|
||||
========
|
||||
:doctype: manpage
|
||||
|
||||
NAME
|
||||
----
|
||||
xasm - 6502 cross-assembler
|
||||
|
||||
SYNOPSIS
|
||||
--------
|
||||
*xasm* '[OPTIONS] SOURCE_FILE'
|
||||
|
||||
DESCRIPTION
|
||||
-----------
|
||||
*xasm* is a cross-assembler for the 6502 family processors.
|
||||
|
||||
'SOURCE_FILE' is the name of the source file
|
||||
(you may omit the default `.asx` extension).
|
||||
Using '-' as 'SOURCE_FILE' makes *xasm* read from standard input.
|
||||
When invoked without any options, *xasm* assembles 'SOURCE_FILE'
|
||||
and writes the result to an object file named 'SOURCE_FILE'
|
||||
with the extension changed to `.obx`.
|
||||
|
||||
OPTIONS
|
||||
-------
|
||||
|
||||
*-c*::
|
||||
The listing should include conditionally skipped lines.
|
||||
|
||||
[[new_deflabel]]*-d* 'LABEL'='VALUE'::
|
||||
Defines a label.
|
||||
'LABEL' should be a valid label name.
|
||||
'VALUE' may be any expression (potentially referencing labels defined in source files).
|
||||
You may use several *-d* options to define many labels on the command line.
|
||||
|
||||
*-i*::
|
||||
The listing file should exclude included files.
|
||||
|
||||
*-l* '[LISTING_FILE]'::
|
||||
Generates a listing file.
|
||||
Using '-' as 'LISTING_FILE' makes *xasm* write to standard output.
|
||||
If 'LISTING_FILE' is omitted, the listing filename
|
||||
is 'SOURCE_FILE' with the extension changed to `.lst`.
|
||||
|
||||
[[new_makefile]]*-M*::
|
||||
Prints a `Makefile` rule.
|
||||
First line of the rule lists 'OBJECT_FILE' as the target of the rule
|
||||
and all source files (including the ones specified with `icl` and `ins`) as dependencies.
|
||||
The second line contains the command line with 'OBJECT_FILE'
|
||||
replaced by the *make* macro `$@` and 'SOURCE_FILE' replaced by the macro `$<`.
|
||||
Dollar signs in the command line are doubled.
|
||||
Your *make* or shell may require further escaping.
|
||||
|
||||
*-o* 'OBJECT_FILE'::
|
||||
Sets output file name.
|
||||
Using '-' as 'OBJECT_FILE' makes *xasm* write to standard output.
|
||||
The default is 'SOURCE_FILE' with the extension changed to `.obx`, or
|
||||
standard output if standard input was specified as source.
|
||||
|
||||
[[new_fullpaths]]*-p*::
|
||||
Prints absolute paths in listing and error messages.
|
||||
|
||||
[[new_quiet]]*-q*::
|
||||
Quiet mode. Prevents *xasm* from printing its banner and compilation summary.
|
||||
|
||||
*-t* '[LABEL_FILE]'::
|
||||
Generates a label table.
|
||||
Using '-' as 'LABEL_FILE' makes *xasm* write to standard output.
|
||||
If 'LABEL_FILE' is omitted then the table is appended at the end of the listing.
|
||||
|
||||
[[new_unlabels]]*-u*::
|
||||
Issues warnings for unreferenced labels.
|
||||
|
||||
Alternatively, you may use DOS-style options, for example:
|
||||
|
||||
-----------------------------------------------------------
|
||||
xasm /i /d:DEBUG=1 /l:listing.lst source.asx
|
||||
-----------------------------------------------------------
|
||||
|
||||
These are deprecated because they are incompatible with https://www.msys2.org[MSYS2].
|
||||
|
||||
SYNTAX
|
||||
------
|
||||
|
||||
Source files should be plain ASCII files.
|
||||
LF, CR, CR/LF and Atari ($9b) line terminators are supported.
|
||||
Labels and instructions are case-insensitive.
|
||||
|
||||
*xasm* is backward compatible with Quick Assembler.
|
||||
To compile QA sources with *xasm*, simply replace ATASCII characters
|
||||
in string literals with the corresponding integers.
|
||||
Also update all `OPT` directives, but often you can omit them.
|
||||
|
||||
A 'label' is a symbol that represents a signed 32-bit integer.
|
||||
You define a label by putting its name at the beginning of a line
|
||||
(with no spaces before).
|
||||
The label will be assigned the current value of the 'origin counter'
|
||||
(that is, the address of the compiled instruction),
|
||||
unless you use it with the `EQU` directive to assign the specified value.
|
||||
|
||||
[[new_locallabel]]
|
||||
Any label name starting with a `?` (question mark) is a 'local label'.
|
||||
It is implicitly prefixed with the name of the most recently defined
|
||||
'global label' (that is, a label without any `?` in name),
|
||||
and remains visible until another global label is defined.
|
||||
It is still possible to access a local label from anywhere in the source
|
||||
by specifying its full name.
|
||||
Local labels provide a way to reuse common, short label names while keeping
|
||||
them unique.
|
||||
Example:
|
||||
----
|
||||
foo ldy #0
|
||||
?loop lda data,y ; full label name is FOO?LOOP
|
||||
beq ?ret
|
||||
jsr sendByte
|
||||
iny:bne ?loop
|
||||
?ret rts
|
||||
|
||||
bar lda baz
|
||||
beq foo?ret ; ok
|
||||
bne ?loop ; ERROR: Undeclared label: BAR?LOOP
|
||||
----
|
||||
|
||||
'Instructions' and 'directives' must be preceded with some whitespace.
|
||||
Without leading whitespace they are treated as label names.
|
||||
For example:
|
||||
----
|
||||
nop
|
||||
----
|
||||
is a 6502 instruction, whereas
|
||||
----
|
||||
nop
|
||||
----
|
||||
(without leading space) defines a label called `nop`.
|
||||
|
||||
Whole-line comments must start with a semicolon, an asterisk or a pipe,
|
||||
with an optional label definition and spaces before.
|
||||
Here are examples of whole-line comments:
|
||||
--------------------
|
||||
; this is a comment
|
||||
* so it is
|
||||
label | and this too
|
||||
--------------------
|
||||
|
||||
[[new_linerep]]
|
||||
Lines with instructions (and selected directives) may be 'repeated'.
|
||||
To assemble a single line several times,
|
||||
precede the repeat count with a colon, for example:
|
||||
-----------------
|
||||
:4 asl @
|
||||
mask_lookup :32 dta $80,$40,$20,$10,$08,$04,$02,$01
|
||||
-----------------
|
||||
|
||||
In lines with instructions or directives, a comment starts immediately
|
||||
after the instruction/directive has been successfully parsed.
|
||||
That is, in such lines *xasm* does 'not' require any special character
|
||||
to start a comment.
|
||||
-------------------------------------------------------------
|
||||
lda foo ; this is a comment
|
||||
sta bar this too
|
||||
tax #0 tax has no operand, therefore #0 starts this comment
|
||||
-------------------------------------------------------------
|
||||
|
||||
[[new_pairing]]
|
||||
You may put two or more instructions in one line so they share their operand.
|
||||
For example:
|
||||
------------
|
||||
eor:sta foo
|
||||
------------
|
||||
is equivalent to
|
||||
------------
|
||||
eor foo
|
||||
sta foo
|
||||
------------
|
||||
|
||||
Note that
|
||||
------------
|
||||
lda:tax:tay #0
|
||||
------------
|
||||
is allowed because `#0` is treated as a comment for `tax` and `tay`.
|
||||
|
||||
EXPRESSIONS
|
||||
-----------
|
||||
Expressions are numbers combined with operators and brackets.
|
||||
You should use square brackets, because parentheses are reserved
|
||||
for 6502 indirect addressing.
|
||||
|
||||
A number is:
|
||||
|
||||
- a 32-bit decimal integer, e.g. `12345`
|
||||
- a 32-bit hexadecimal integer, e.g. `$abcd`
|
||||
- a 32-bit binary integer, e.g. `%10100101`
|
||||
- an ASCII character, e.g. `'a'` or `"a"`
|
||||
- the current value of the origin counter: `*`
|
||||
- a hardware register (see below), e.g. `^4e`
|
||||
- [[new_opcode]]an opcode (see below), e.g. `{lda #0}` is `$a9`
|
||||
- [[new_linecnt]]the current value of the line repeat counter (see below): `#`
|
||||
|
||||
Abbreviations of Atari hardware registers are provided
|
||||
to save two characters (`$d40e` vs `^4e`)
|
||||
and to facilitate porting software between Atari 8-bit computers
|
||||
and the Atari 5200 console.
|
||||
These are very similar machines, one of the biggest differences
|
||||
is the location of hardware registers.
|
||||
|
||||
[cols="^m,^d,^m,^d",options="header"]
|
||||
|================================================
|
||||
|Syntax|Chip |Value|Value in Atari 5200 mode (`opt g+`)
|
||||
| ^0x |GTIA |$D00x|`$C00x`
|
||||
| ^1x |GTIA |$D01x|`$C01x`
|
||||
| ^2x |POKEY|$D20x|`$E80x`
|
||||
| ^3x |PIA |$D30x|'error (there's no PIA chip)'
|
||||
| ^4x |ANTIC|$D40x|`$D40x`
|
||||
|================================================
|
||||
|
||||
The opcode syntax represents the opcode byte of the instruction inside braces.
|
||||
The operand of the instruction is discarded and is needed only to recognize
|
||||
the addressing mode. The instruction should begin right after the left brace
|
||||
and the right brace should immediately follow the operand 'or' the instruction.
|
||||
[[new_op_op]]You can skip the operand if the addressing mode is fixed.
|
||||
Examples: `{lda #}`, `{jsr}`, `{bne}`, `{jmp ()}`, `{sta a:,x}`.
|
||||
|
||||
You can use the line repeat counter (`#`) in the repeated lines.
|
||||
It counts the iterations starting from zero. Examples:
|
||||
----------------------------------------------------
|
||||
:3 dta # ; generates three bytes: 0, 1, 2.
|
||||
line_lo :192 dta l(screen+40*#)
|
||||
line_hi :192 dta h(screen+40*#)
|
||||
dl :59 dta $4f,a(screen+40*#),0,$4f,a(screen+40*#),0
|
||||
----------------------------------------------------
|
||||
|
||||
The following 'binary operators' are supported:
|
||||
|
||||
- `+` Addition
|
||||
- `-` Subtraction
|
||||
- `*` Multiplication
|
||||
- `/` Division
|
||||
- `%` Remainder
|
||||
- `&` Bitwise AND
|
||||
- `|` Bitwise OR
|
||||
- `^` Bitwise XOR
|
||||
- `<<` Arithmetic shift left
|
||||
- `>>` Arithmetic shift right
|
||||
- `==` Equal
|
||||
- `=` Equal (same as `==`)
|
||||
- `!=` Not equal
|
||||
- `<>` Not equal (same as `!=`)
|
||||
- `<` Less than
|
||||
- `>` Greater than
|
||||
- `<=` Less or equal
|
||||
- `>=` Greater or equal
|
||||
- `&&` Logical AND
|
||||
- `||` Logical OR
|
||||
|
||||
[[new_unary]]
|
||||
The following 'unary operators' are supported:
|
||||
|
||||
- `+` Plus (no operation)
|
||||
- `-` Minus (changes the sign)
|
||||
- `~` Bitwise NOT (complements all bits)
|
||||
- `!` Logical NOT (changes true to false and vice versa)
|
||||
- `<` Low (extracts the low byte)
|
||||
- `>` High (extracts the high byte)
|
||||
|
||||
Although the operators are similar to those used in C, C++, C# and Java,
|
||||
their precedence is different:
|
||||
|
||||
- first: `[]` (brackets)
|
||||
- `+ - ~ < >` (unary)
|
||||
- `* / % & << >>` (binary)
|
||||
- `+ - | ^` (binary)
|
||||
- `= == <> != < > <= >=` (binary)
|
||||
- `!` (unary)
|
||||
- `&&` (binary)
|
||||
- last: `||` (binary)
|
||||
|
||||
The compare and logical operators assume that zero is false
|
||||
and a non-zero is true. They return 1 for true.
|
||||
|
||||
Expressions are calculated in signed 32-bit arithmetic.
|
||||
An overflow is signalled with an "Arithmetic overflow" error.
|
||||
|
||||
DIRECTIVES
|
||||
----------
|
||||
|
||||
*EQU* - assign the value of an expression to a label::
|
||||
|
||||
Examples:
|
||||
+
|
||||
----------
|
||||
five equ 5
|
||||
here equ *
|
||||
----------
|
||||
|
||||
[[new_opt]]*OPT* - set assembler options::
|
||||
|
||||
Six options are available:
|
||||
|
||||
- `F` - fill the space between noncontiguous memory areas with `$FF` bytes
|
||||
- `G` - Atari 5200 mode for hardware register abbreviations (`^xx`)
|
||||
- `H` - generate Atari executable headers
|
||||
- `L` - write the listing
|
||||
- `O` - write the object file
|
||||
- `U` - warn of unused labels
|
||||
|
||||
+
|
||||
You can turn any of these on or off.
|
||||
The default (before the first `OPT`) is `opt f-g-h+l+o+u+`.
|
||||
For compatibility with MADS, `opt ?+` is accepted and ignored.
|
||||
Examples:
|
||||
+
|
||||
------------------------------------------------------------------------------
|
||||
opt l- listing off
|
||||
opt l+o- listing on, object file off
|
||||
opt f+g+h- useful for Atari 5200 cartridges - raw output, 5200 hw regs
|
||||
opt ?+ MADS compatibility, no effect
|
||||
------------------------------------------------------------------------------
|
||||
|
||||
*ORG* - set the origin counter::
|
||||
|
||||
If Atari executable headers are enabled (`opt h+`), you can include an operand prefix:
|
||||
|
||||
- `a:` starts a new block even if it's superfluous
|
||||
because the new address equals the current address.
|
||||
- `f:` is same as `a:`, but additionally generates a double `$FF` prefix
|
||||
before the new header. This prefix is automatically generated
|
||||
at the beginning of the file (no need to include `f:` in the first `ORG`).
|
||||
|
||||
+
|
||||
Examples:
|
||||
+
|
||||
---------------
|
||||
org $600
|
||||
org f:$700
|
||||
table org *+100
|
||||
---------------
|
||||
+
|
||||
In the latter example `table` points to 100 bytes
|
||||
of uninitialized data (label is assigned with `*`
|
||||
before the `ORG` directive is executed).
|
||||
+
|
||||
[[new_orgr]]*xasm* supports code that is relocated at run time.
|
||||
Let's say you want your code to be located on page zero for best performance.
|
||||
You can't safely load it directly into this place,
|
||||
so you load it at a different address and then move in your program.
|
||||
`org r:` changes the address that it used for code generation
|
||||
but not the address used for generating Atari executable headers.
|
||||
Example:
|
||||
+
|
||||
--------------------------------------
|
||||
org $8000
|
||||
ldx #code_length-1
|
||||
mva:rpl code_loaded,x z:code_zpage,x-
|
||||
jmp code_zpage
|
||||
|
||||
code_loaded
|
||||
org r:$30
|
||||
code_zpage
|
||||
jmp * ; ... or something more sensible
|
||||
code_length equ *-code_zpage
|
||||
--------------------------------------
|
||||
+
|
||||
Note that both `*` and label definitions use the counter used
|
||||
for code generation. There is no direct access to the other counter.
|
||||
You can only calculate it:
|
||||
+
|
||||
---------------------------------------
|
||||
where_am_i equ *-code_zpage+code_loaded
|
||||
---------------------------------------
|
||||
|
||||
[[new_dta]]*DTA* - define data::
|
||||
|
||||
- integers
|
||||
+
|
||||
--
|
||||
* bytes: `b(200)` or simply `200`
|
||||
* words: `a(10000)`
|
||||
* low bytes of words: `l(511)` (byte 255)
|
||||
* high bytes of words: `h(511)` (byte 1)
|
||||
|
||||
You may enter many expressions in parentheses and combine different types
|
||||
of data in single line, separating things with commas.
|
||||
|
||||
You may also build a sine lookup table. The syntax is:
|
||||
-------------------------------
|
||||
sin(center,amp,period,first,last)
|
||||
-------------------------------
|
||||
where:
|
||||
|
||||
* `center` is an integer which is added to every sine value
|
||||
* `amp` is the sine amplitude
|
||||
* `period` is the number of values per sine period
|
||||
* `first,last` define the range of sine arguments.
|
||||
They are optional. The default are `0,period-1`.
|
||||
|
||||
Example:
|
||||
----------------------------
|
||||
dta a(sin(0,1000,256,0,63))
|
||||
----------------------------
|
||||
defines a table of 64 words representing a quarter of sine with the amplitude of 1000.
|
||||
--
|
||||
|
||||
- real numbers: `r(-1.23456e12)`
|
||||
+
|
||||
Real numbers are stored in the 6-byte Atari Floating-Point format.
|
||||
|
||||
- text strings
|
||||
+
|
||||
--
|
||||
* ASCII strings: `c'Text'` or `c"Text"`
|
||||
* ANTIC strings: `d'Text'` or `d"Text"`
|
||||
|
||||
A character string consists of any number of characters surrounded by quotation
|
||||
marks. You can include the quotation marks in the string by doubling them.
|
||||
Placing a `*` character after a string inverts
|
||||
the highest bit in every byte of the string.
|
||||
--
|
||||
+
|
||||
Examples of `DTA`:
|
||||
+
|
||||
------------------------------------------------
|
||||
dta b(1,2),3,a(1000,-1),l(12345,sin(0,127,256))
|
||||
dta d"ANTIC"*,c'It''s a string',$9b
|
||||
------------------------------------------------
|
||||
|
||||
*ICL* - include another source file::
|
||||
|
||||
Specifies another file to be included in the assembly as if the contents
|
||||
of the referenced file appeared in place of the `ICL` statement.
|
||||
The included file may contain other `ICL` statements.
|
||||
The `.asx` extension is added if none given.
|
||||
Examples:
|
||||
+
|
||||
-----------------
|
||||
icl 'macros.asx'
|
||||
icl 'lib/fileio'
|
||||
-----------------
|
||||
+
|
||||
NOTE: For Windows/macOS/Linux portability use relative paths
|
||||
and slashes as path separators.
|
||||
|
||||
*END* - end this source file::
|
||||
|
||||
May be used if the source file ends with something which shouldn't
|
||||
be read by *xasm* (e.g. your notes).
|
||||
|
||||
*INS* - insert binary file contents::
|
||||
|
||||
Copies every byte of the specified file into the object file and updates
|
||||
the origin counter, as if these bytes were specified in a `DTA`.
|
||||
You may specify a range of the file to insert. The syntax is:
|
||||
+
|
||||
-----------------------------
|
||||
ins 'file'[,offset[,length]]
|
||||
-----------------------------
|
||||
+
|
||||
The first byte in a file has the offset of zero.
|
||||
If the offset is negative, it counts from the end of the file.
|
||||
Examples:
|
||||
+
|
||||
-----------------------------------------------
|
||||
ins 'picture.raw'
|
||||
ins 'file',-256 ; insert last 256 bytes of file
|
||||
ins 'file',10,10 ; insert bytes 10..19 of file
|
||||
-----------------------------------------------
|
||||
|
||||
*RUN* - set the Atari executable run address::
|
||||
|
||||
+
|
||||
---------
|
||||
run main
|
||||
---------
|
||||
+
|
||||
is equivalent to:
|
||||
+
|
||||
------------
|
||||
org $2e0
|
||||
dta a(main)
|
||||
------------
|
||||
|
||||
*INI* - set the Atari executable init address::
|
||||
|
||||
Example:
|
||||
+
|
||||
------------
|
||||
ini showloadingpic
|
||||
------------
|
||||
|
||||
*ERT* - abort the assembly with an error if an expression is true::
|
||||
|
||||
Examples:
|
||||
+
|
||||
-----------------------
|
||||
ert *>$c000
|
||||
ert len1>$ff||len2>$ff
|
||||
-----------------------
|
||||
|
||||
[[new_eli]]*IFT* - assemble if expression is true::
|
||||
*ELI* - else if::
|
||||
*ELS* - else::
|
||||
*EIF* - end if::
|
||||
|
||||
With these directives you can construct fragments which
|
||||
are assembled only when a condition is met.
|
||||
Conditional constructions can be nested.
|
||||
Example:
|
||||
+
|
||||
-------------
|
||||
noscr equ 1
|
||||
widescr equ 1
|
||||
ift noscr
|
||||
lda #0
|
||||
eli widescr
|
||||
lda #$23
|
||||
els
|
||||
lda #$22
|
||||
eif
|
||||
sta $22f
|
||||
-------------
|
||||
+
|
||||
NOTE: Alternatively, the above example can be written using the 'repeat line' feature:
|
||||
+
|
||||
--------------------------
|
||||
noscr equ 1
|
||||
widescr equ 1
|
||||
:noscr lda #0
|
||||
:!noscr&&widescr lda #$23
|
||||
:!noscr&&!widescr lda #$22
|
||||
sta $22f
|
||||
--------------------------
|
||||
|
||||
PSEUDO COMMANDS
|
||||
---------------
|
||||
'Pseudo commands' are built-in macros. There are 'no' user-defined macros in *xasm*.
|
||||
|
||||
*ADD* - add without carry::
|
||||
|
||||
If you have ever programmed a 6502, you must have noticed that you had
|
||||
to use a `CLC` before `ADC` for every simple addition.
|
||||
+
|
||||
*xasm* can do it for you. `ADD` replaces two instructions: `CLC` and `ADC`.
|
||||
|
||||
*SUB* - subtract::
|
||||
|
||||
It is `SEC` followed by `SBC`.
|
||||
|
||||
[[new_repskip]]*RCC, RCS, REQ, RMI, RNE, RPL, RVC, RVS* - conditional repeat::
|
||||
|
||||
These are branches to the previous instruction.
|
||||
They take no operand, because the branch target is the address
|
||||
of the previously assembled instruction or pseudo command.
|
||||
Example:
|
||||
+
|
||||
-----------------------
|
||||
ldx #0
|
||||
mva:rne $500,x $600,x+
|
||||
-----------------------
|
||||
+
|
||||
The above code copies a 256-byte memory block from $500 to $600.
|
||||
Here is the same written with standard 6502 commands only:
|
||||
+
|
||||
--------------------
|
||||
ldx #0
|
||||
copy_loop lda $500,x
|
||||
sta $600,x
|
||||
inx
|
||||
bne copy_loop
|
||||
--------------------
|
||||
|
||||
*SCC, SCS, SEQ, SMI, SNE, SPL, SVC, SVS* - conditional skip::
|
||||
|
||||
These are branches over the next instruction. No operand is required,
|
||||
because the target is the address of the instruction following
|
||||
the next instruction.
|
||||
Example:
|
||||
+
|
||||
--------------
|
||||
lda #40
|
||||
add:sta ptr
|
||||
scc:inc ptr+1
|
||||
--------------
|
||||
+
|
||||
In the above example the 16-bit variable `ptr` is incremented by 40.
|
||||
|
||||
*JCC, JCS, JEQ, JMI, JNE, JPL, JVC, JVS* - conditional jump::
|
||||
|
||||
These are long branches. While standard branches (such as `BNE`)
|
||||
have range of -128..+127 bytes, these jumps have range of 64 KB.
|
||||
For example:
|
||||
+
|
||||
---------
|
||||
jne dest
|
||||
---------
|
||||
+
|
||||
is equivalent to:
|
||||
+
|
||||
-------------
|
||||
seq:jmp dest
|
||||
-------------
|
||||
|
||||
*INW* - increment word::
|
||||
|
||||
Increments a 16-bit word in the memory.
|
||||
Example:
|
||||
+
|
||||
---------
|
||||
inw dest
|
||||
---------
|
||||
+
|
||||
is equivalent to:
|
||||
+
|
||||
---------------
|
||||
inc dest
|
||||
sne:inc dest+1
|
||||
---------------
|
||||
|
||||
*MVA, MVX, MVY* - move a byte using the accumulator, X or Y::
|
||||
|
||||
Each of these pseudo commands requires two operands
|
||||
and substitutes two commands:
|
||||
+
|
||||
----------------------------------------
|
||||
mva source dest = lda source : sta dest
|
||||
mvx source dest = ldx source : stx dest
|
||||
mvy source dest = ldy source : sty dest
|
||||
----------------------------------------
|
||||
|
||||
[[new_mwinde]]*MWA, MWX, MWY* - move word using accumulator, X or Y::
|
||||
|
||||
These pseudo commands require two operands and are combinations of two `MVA`/`MVX`/`MWY`:
|
||||
one to move the low byte, and the other to move the high byte.
|
||||
You can't use indirect nor pseudo addressing mode with `MWA`/`MWX`/`MWY`.
|
||||
Destination must be an absolute or zeropage address, optionally indexed.
|
||||
When source is also an absolute or zeropage address, an `mwa source dest` expands to:
|
||||
+
|
||||
--------------------
|
||||
mva source dest
|
||||
mva source+1 dest+1
|
||||
--------------------
|
||||
+
|
||||
When source is an immediate value, an `mwa #immed dest` expands to:
|
||||
+
|
||||
------------------
|
||||
mva <immed dest
|
||||
mva >immed dest+1
|
||||
------------------
|
||||
+
|
||||
When `<immed` equals `>immed` and `immed` is not forward-referenced,
|
||||
*xasm* skips the second `LDA`, generating the following code:
|
||||
+
|
||||
----------------
|
||||
mva <immed dest
|
||||
sta dest+1
|
||||
----------------
|
||||
+
|
||||
If possible, `MWX` and `MWY` use increment/decrement instructions.
|
||||
For example, `mwx #1 dest` expands to:
|
||||
+
|
||||
-----------
|
||||
ldx #1
|
||||
stx dest
|
||||
dex
|
||||
stx dest+1
|
||||
-----------
|
||||
|
||||
ADDRESSING MODES
|
||||
----------------
|
||||
|
||||
Addressing modes are entered in the standard 6502 convention.
|
||||
An exception is the accumulator mode marked with the `@` character
|
||||
for compatibility with Quick Assembler.
|
||||
|
||||
Also for Quick Assembler compatibility there are two extra immediate
|
||||
addressing modes: `<` and `>`, which use the low/high byte of a 16-bit word constant.
|
||||
Unlike in Quick Assembler, you can alternatively use
|
||||
the more common syntax: `#<` and `#>`.
|
||||
Note the difference:
|
||||
-------------------------------
|
||||
lda >$ff+5 ; loads 1 (>$104)
|
||||
lda #>$ff+5 ; loads 5 (0+5)
|
||||
-------------------------------
|
||||
|
||||
You can explicitly specify absolute (`a:`) and zero-page (`z:`) addressing modes.
|
||||
|
||||
Examples:
|
||||
--------------------------------------
|
||||
nop
|
||||
asl @
|
||||
lda >$1234 assembles to lda #$12
|
||||
lda $100,x
|
||||
lda 0 zero-page (8-bit address)
|
||||
lda a:0 absolute (16-bit address)
|
||||
jmp ($0a)
|
||||
lda ($80),y
|
||||
--------------------------------------
|
||||
|
||||
[[new_adrmodes]]
|
||||
There are 'pseudo addressing modes', which are similar to pseudo commands.
|
||||
You may use them just like standard addressing modes in all 6502 commands
|
||||
and pseudo commands, except for `MWA`, `MWX` and `MWY`:
|
||||
------------------------------------------
|
||||
cmd a,x+ = cmd a,x : inx
|
||||
cmd a,x- = cmd a,x : dex
|
||||
cmd a,y+ = cmd a,y : iny
|
||||
cmd a,y- = cmd a,y : dey
|
||||
cmd (z),y+ = cmd (z),y : iny
|
||||
cmd (z),y- = cmd (z),y : dey
|
||||
cmd (z,0) = ldx #0 : cmd (z,x)
|
||||
cmd (z),0 = ldy #0 : cmd (z),y
|
||||
cmd (z),0+ = ldy #0 : cmd (z),y : iny
|
||||
cmd (z),0- = ldy #0 : cmd (z),y : dey
|
||||
------------------------------------------
|
||||
|
||||
HISTORY
|
||||
-------
|
||||
|
||||
Version 3.2.1 (2022-12-08)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- source can optionally be read from standard input, and object can be
|
||||
written to standard output instead of files (by Adrian Matoga)
|
||||
- <<new_pairing,any number of instructions in one line>> (by Adrian Matoga)
|
||||
|
||||
Version 3.2.0 (2021-06-22)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- <<new_locallabel,local labels>> (contributed by Adrian Matoga)
|
||||
- fixed emitted bytes not shown in the listing after `OPT L+` (by Adrian Matoga)
|
||||
- emit shorter code for moving a negative immediate value with `MWX`/`MWY`
|
||||
- Windows binary signed
|
||||
- macOS binary signed, notarized, installed in `/usr/local/bin`
|
||||
|
||||
Version 3.1.1 (2019-11-20)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- remove partial object file on error (requested by Bill Kendrick)
|
||||
- report label name in the unused label warning (requested by Peter Dell)
|
||||
- support `a:`/`f:` modifiers for `RUN`/`INI`
|
||||
- improved performance with network drives (reported by Marek Pavlik)
|
||||
|
||||
Version 3.1.0 (2014-07-20)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- OS X, Ubuntu and Fedora distributions
|
||||
- `INS` can be repeated (suggested by Marek Pavlik) and taken "opcode" of
|
||||
- `OPT U-` disables <<new_unlabels,*/u*>> unused label warnings
|
||||
(suggested by Marek Pavlik)
|
||||
- if the file to be included cannot be opened, report an error in the `ICL` line
|
||||
(suggested by Peter Dell)
|
||||
- removed duplicate filenames for <<new_makefile,*/M*>>
|
||||
- implemented <<new_fullpaths,*/p*>> outside Windows
|
||||
- source code updated from D1 to D2
|
||||
- project moved to GitHub
|
||||
|
||||
Version 3.0.2 (2009-10-17)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed "Branch out of range" error message - was overstated by 256 bytes
|
||||
for backward branches
|
||||
- <<new_makefile,new command-line option */M* prints a Makefile rule>>
|
||||
- command-line options are now case-insensitive
|
||||
- on Windows, error messages are printed in red, warnings in yellow
|
||||
|
||||
Version 3.0.1 (2007-04-22)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed a bug in `OPT H-` mode
|
||||
- made *xasm* compilable with the latest D compiler v1.010
|
||||
(there were incompatible changes in the D language and library)
|
||||
|
||||
Version 3.0.0 (2005-05-22)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- rewritten from the x86 assembly language to the
|
||||
http://dlang.org/[D programming language] - Linux version
|
||||
is now available and DOS is no longer supported
|
||||
- no limits on line length, number of `ICLs`, `ORGs`,`IFTs` and labels
|
||||
- Unix-style command-line options are supported
|
||||
- the */e* option is removed
|
||||
- the label table is now sorted alphabetically
|
||||
|
||||
Version 2.6.1 (2005-05-21)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- no more "Arithmetic overflow" and "Division by zero" errors for correct
|
||||
use of forward-referenced labels (bug found by Marcin Lewandowski)
|
||||
- an error was reported in the following correct code:
|
||||
+
|
||||
---------
|
||||
ift 0
|
||||
foo equ 1
|
||||
ift foo
|
||||
eif
|
||||
eif
|
||||
---------
|
||||
+
|
||||
(bug found by Adrian Matoga)
|
||||
|
||||
- errors for non-existing `INC @` and `DEC @`
|
||||
- negative numbers fixed in the listing
|
||||
|
||||
Version 2.6.0 (2005-02-07)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- long file names are supported under Windows
|
||||
- <<new_orgr,support for code relocated at runtime>>
|
||||
- <<new_linecnt,line repeat counter>>
|
||||
- label values are now 32-bit, not just 17-bit
|
||||
- command-line options */n* and */s* are no longer supported
|
||||
- fatal I/O errors no longer print the annoying "Abort, Retry, Ignore" message
|
||||
|
||||
Version 2.5.2 (2002-10-03)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- version 2.5.1 broke Unix EOLs - fixed
|
||||
- version 2.5.1 omitted all blank/comment/label lines, unless */c* was used
|
||||
|
||||
Version 2.5.1 (2002-08-21)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed assembling sources with Atari EOLs
|
||||
- blank/comment/label lines in false conditionals are now correctly omitted
|
||||
in listing
|
||||
|
||||
Version 2.5 (2002-07-08)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed another bug similar to the previous one, for example:
|
||||
+
|
||||
----------
|
||||
ift 0
|
||||
:label nop
|
||||
eif
|
||||
----------
|
||||
+
|
||||
reported "Label not defined before" error for the repeat count
|
||||
|
||||
- <<new_opt,`OPT F+` causes `ORG` to fill the space
|
||||
between the old and the new location with `$FFs`>>
|
||||
- <<new_opt,`OPT G+` enables Atari 5200 mode for hardware
|
||||
register abbreviations>>
|
||||
|
||||
Version 2.4.1 (2002-06-27)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed a bug related to label definitions in conditionally skipped code,
|
||||
e.g.
|
||||
+
|
||||
----------
|
||||
ift 0
|
||||
label
|
||||
eif
|
||||
----------
|
||||
+
|
||||
reported "No ORG specified" error for the label definition
|
||||
|
||||
Version 2.4 (2002-05-22)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed incorrect unary operator precedence
|
||||
- fixed wrong label value after a skip pseudo command
|
||||
- the assembler is an .EXE (.COM caused problems with DJGPP *make* due
|
||||
to a bug in the DJGPP runtime)
|
||||
- the assembler executable is no longer compressed
|
||||
- improved command-line parsing: options may be used before the source file name,
|
||||
tab is a valid separator, slash may be used as a directory separator
|
||||
- error and warning messages are written to stderr, not stdout
|
||||
- added `==` (equals) operator, equivalent to `=`, but familiar to C/C++/Java programmers
|
||||
- <<new_deflabel,added `/d:label=value` option: define a label>>
|
||||
- <<new_fullpaths,added `/p` option: print full paths
|
||||
in listing and error messages>>
|
||||
- <<new_quiet,added `/q` option: quiet mode>>
|
||||
- <<new_unlabels,added `/u` option: warn of unused labels>>
|
||||
- <<new_opt,writing to the object file may be suppressed with `OPT O-`>>
|
||||
- <<new_eli,added `ELI` (else if) directive>>
|
||||
- <<new_mwinde,`MWX` and `MWY` may use `INX`/`DEX` and `INY`/`DEY`,
|
||||
respectively, for generating shorter code>>
|
||||
|
||||
Version 2.3 (2002-02-10)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed double skip (e.g. `SCC:SNE`)
|
||||
- fixed real numbers with two-digit exponent
|
||||
- trailing spaces are trimmed from listing lines
|
||||
- label definitions allowed in blank, comment and repeated lines
|
||||
- <<new_unary,unary operators>>
|
||||
- <<new_dta,`DTA` implied byte mode>>
|
||||
- <<new_op_op,operand can be skipped for some opcodes>>
|
||||
|
||||
Version 2.2 (1999-09-10)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed invalid opcodes of absolute `CPX` and `CPY`
|
||||
- fixed: addressing mode not checked for branch commands
|
||||
- fixed `ICL` in last line
|
||||
- fixed `OPT H-H+`
|
||||
- fixed first `ORG *`
|
||||
- no need to set the origin counter until it's needed
|
||||
- allow Unix, Macintosh and Atari EOLs
|
||||
- value of 'true' changed to 1
|
||||
- command-line option to set environment variables on error
|
||||
- commane-line option to assemble only if the source is newer than the object file
|
||||
- <<new_opcode,opcode extracting>>
|
||||
- <<new_linerep,repeat line>>
|
||||
- <<new_pairing,two instructions in line>>
|
||||
- <<new_repskip,conditional repeat and skip pseudo commands>>
|
||||
- <<new_adrmodes,`(),0+` and `(),0-` pseudo addressing modes>>
|
||||
|
||||
Version 2.0 (1998-11-12)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- fixed: object filename was truncated
|
||||
- fixed forward references in `EQU` and `DTA`
|
||||
- fixed hex numbers
|
||||
- `.OBX` is now the default extension for the object file
|
||||
- options (command-line switches and `OPT`)
|
||||
- listing
|
||||
- label table
|
||||
- conditional assembly
|
||||
- user errors (`ERT`)
|
||||
- warnings
|
||||
- 6 new pseudo commands (memory-to-memory move)
|
||||
- 8 pseudo addressing modes
|
||||
- indirect conditional jumps
|
||||
- Atari floating-point numbers
|
||||
- object file headers optimization
|
||||
- improved expressions - 19 operators and brackets, 32-bit arithmetic
|
||||
- improved signed numbers
|
||||
- improved `INS`: inserting specified part of file
|
||||
|
||||
Version 1.2 (1998-08-14)
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
- first release
|
||||
|
||||
AUTHOR
|
||||
------
|
||||
Piotr Fusik <fox@scene.pl>
|
||||
|
||||
SEE ALSO
|
||||
--------
|
||||
|
||||
Website: https://github.com/pfusik/xasm[]
|
|
@ -0,0 +1,42 @@
|
|||
# xasm settings for SciTE (http://www.scintilla.org/SciTE.html)
|
||||
|
||||
file.patterns.xasm=*.asx
|
||||
filter.xasm=xasm (asx)|$(file.patterns.xasm)|
|
||||
*filter.xasm=$(filter.xasm)
|
||||
lexer.$(file.patterns.xasm)=asm
|
||||
*language.xasm=xasm|asx||
|
||||
|
||||
keywords.$(file.patterns.xasm)= \
|
||||
adc add and asl bcc bcs beq bit \
|
||||
bmi bne bpl brk bvc bvs clc cld \
|
||||
cli clv cmp cpx cpy dec dex dey \
|
||||
dta eif eli els end eor equ ert \
|
||||
icl ift inc ini ins inw inx iny \
|
||||
jcc jcs jeq jmi jmp jne jpl jsr \
|
||||
jvc jvs lda ldx ldy lsr mva mvx \
|
||||
mvy mwa mwx mwy nop opt ora org \
|
||||
pha php pla plp rcc rcs req rmi \
|
||||
rne rol ror rpl rti rts run rvc \
|
||||
rvs sbc scc scs sec sed sei seq \
|
||||
smi sne spl sta stx sty sub svc \
|
||||
svs tax tay tsx txa txs tya
|
||||
|
||||
comment.block.asm=;
|
||||
|
||||
style.asm.32=
|
||||
style.asm.1=$(colour.code.comment.line)
|
||||
style.asm.2=
|
||||
style.asm.3=$(colour.string)
|
||||
style.asm.4=$(colour.operator)
|
||||
style.asm.5=
|
||||
style.asm.6=$(colour.keyword)
|
||||
style.asm.7=
|
||||
style.asm.12=$(colour.char)
|
||||
style.asm.13=$(colour.error)
|
||||
|
||||
command.compile.$(file.patterns.xasm)=xasm /o:$(FileName).xex $(FilePath)
|
||||
command.build.$(file.patterns.xasm)=make
|
||||
if PLAT_WIN
|
||||
command.go.$(file.patterns.xasm)=start $(FileName).xex
|
||||
if PLAT_GTK
|
||||
command.go.$(file.patterns.xasm)=atari800 -run $(FileName).xex
|
|
@ -0,0 +1,40 @@
|
|||
Name: xasm
|
||||
Version: 3.2.1
|
||||
Release: 1
|
||||
Summary: 6502 cross-assembler
|
||||
License: Poetic
|
||||
Source: http://pfusik.github.io/xasm/xasm-%{version}.tar.gz
|
||||
URL: https://github.com/pfusik/xasm
|
||||
BuildRequires: dmd >= 2, asciidoc
|
||||
|
||||
%description
|
||||
xasm is a 6502 cross-assembler with original syntax extensions.
|
||||
|
||||
%global debug_package %{nil}
|
||||
|
||||
%prep
|
||||
%setup -q
|
||||
|
||||
%build
|
||||
make xasm xasm.1
|
||||
|
||||
%install
|
||||
make DESTDIR=%{buildroot} prefix=%{_prefix} install
|
||||
|
||||
%files
|
||||
%{_bindir}/xasm
|
||||
%{_mandir}/man1/xasm.1.gz
|
||||
|
||||
%changelog
|
||||
* Thu Dec 8 2022 Piotr Fusik <fox@scene.pl>
|
||||
- 3.2.1-1
|
||||
|
||||
* Tue Jun 22 2021 Piotr Fusik <fox@scene.pl>
|
||||
- 3.2.0-1
|
||||
|
||||
* Wed Nov 20 2019 Piotr Fusik <fox@scene.pl>
|
||||
- 3.1.1-1
|
||||
|
||||
* Sun Jul 20 2014 Piotr Fusik <fox@scene.pl>
|
||||
- 3.1.0-1
|
||||
- Initial packaging
|
Loading…
Reference in New Issue