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61 Commits

Author SHA1 Message Date
Christian Groessler
200b420562 Export LMARGN_save to C. People might want to preserve this setting in their program. 
In turn rearrange startup code in order that LMARGN can be set by a 'constructor' (Do
"initlib" later.)
 2021-04-01 15:19:06 +02:00
Christian Groessler
1cc4fa9356 Atari: fix interrupt handling if extended memory is banked in 
Extendend memory is mapped over the main memory in the 0x4000..0x7FFF
area. Many DOSes disable interrupts while extended memory is banked in,
but not all (e.g. SpartaDOS-X).
This change modifies the initial interrupt handler to map in main memory
before chaining to the "worker" handlers.
Since the initial interrupt handler uses a data segment to store the
trampoline to chain to the original handler, introduce a new "LOWBSS"
segment to hold this trampoline. Otherwise the trampoline may end up
inside the 0x4000..0x7FFF area.

Add a link time warning if "LOWCODE" segment lays within the extended
memory window.
 2018-09-05 11:28:15 +02:00
Christian Groessler
94ba9575ec Implement exec() for Atari XDOS. 
- Adds new ENOEXEC error code, also used by Apple2 targets.
- Maximum command line length is 40, incl. program name. This is
  an XDOS restriction.
- testcode/lib/tinyshell.c has been extended to be able to run
  programs.
 2016-06-13 20:40:01 +02:00
Oliver Schmidt
56a8c69b14 Use AX paradigm. 2016-03-13 21:23:45 +01:00
Oliver Schmidt
d8c31cf1d3 Renamed RAM to MAIN for all disk based targets. 
The name RAM doesn't make much sense in general for a memeory area because i.e. the zero page is for sure RAM but is not part of the memory area named RAM.

For disk based targets it makes sense to put the disk file more into focus and here MAIN means the main part of the file - in contrast to some header.

Only for ROM based targets the name RAM is kept as it makes sense to focus on the difference between RAM and ROM.
 2016-03-07 01:28:55 +01:00
Greg King
c7969a78b0 Refined the comments in the target start-up files. 
Fixed typo errors.  Made the comments consistent across all those files.
 2014-08-24 10:10:20 -04:00
Oliver Schmidt
2bc4634860 Normalized style. 
We don't use .ifndef .else .endif
 2014-06-03 18:30:11 +02:00
Christian Groessler
73df73194a fix indentation 2014-03-07 23:15:57 +01:00
Christian Groessler
b40fe584d8 fix typo 2014-03-07 23:15:11 +01:00
Christian Groessler
478a7679a2 Force inclusion of 'shadow RAM preparation' load chunk in crt0.s and 
not in the linker config file.
 2013-10-18 22:08:26 +02:00
Christian Groessler
b153ec8896 atari-asm.cfg linker config file 2013-10-18 03:08:26 +02:00
Christian Groessler
700fd4f187 Enable "system check" load chunk for non-XL Atari target. 2013-10-04 00:54:24 +02:00
Christian Groessler
7fb0cf4bb2 Some formatting and style fixes. 2013-10-01 11:36:37 +02:00
Christian Groessler
60e97f4d96 move macros to enable and disable the ROM into a separate include file 2013-09-19 23:21:09 +02:00
Christian Groessler
47a6390753 adjust some variable names 2013-09-19 22:40:20 +02:00
Christian Groessler
0a7cb64d2e Use '.ifdef' and '.ifndef' instead of '.if .defined' and '.if .not .defined'. 2013-09-19 22:36:22 +02:00
Christian Groessler
f679c9703c consider __STACKSIZE__ when initializing sp for atarixl 2013-09-17 23:03:33 +02:00
Christian Groessler
aac88eac53 Use labels instead of segment load addresses to specify entry points 
in the EXE file.
 2013-09-13 18:28:17 +02:00
Christian Groessler
8bc4b4c636 add code to add free shadow memory to heap (currently disabled) 2013-09-11 22:43:35 +02:00
Christian Groessler
d3d7499faa Remove saving and restoring of zeropage variables. 
Merge remote-tracking branch 'upstream/master'

Conflicts:
	cfg/atarixl.cfg
	libsrc/atari/crt0.s
 2013-07-03 11:38:28 +02:00
Christian Groessler
7ebaec1802 Don't save and restore the zero page locations used. 
Saves 19 bytes code (in the exe file) and reduces memory footprint
of the program by 45 bytes (code & bss).
 2013-07-02 19:55:00 +02:00
Christian Groessler
a03b3574b6 use first free IOCB for "GRAPHICS 0" call instead of using a hard-coded one 2013-06-25 01:27:47 +02:00
Christian Groessler
b31e0d3249 small memory optimization: appmsav not needed in the xl target 2013-06-25 00:53:21 +02:00
Christian Groessler
e621ca0cce Better cleanup on program exit on atarixl target 2013-06-13 01:17:53 +02:00
Christian Groessler
c1230b8af6 small cleanup 2013-05-31 14:49:46 +02:00
Christian Groessler
8e632b2847 some more changes -- atarixl target basically works now 2013-05-31 01:47:25 +02:00
Christian Groessler
06f441e90f Some small first changes for the 'atarixl' target. 2013-05-30 02:30:19 +02:00
Oliver Schmidt
85885001b1 Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
ol.sc
7c9171ee87 Moved IRQ hooking / unhooking from startup code to constructor / destructor to avoid linking in the hooking / unhooking code (and callirq) for the majority of cc65 prorams not linking in interruptors. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5985 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2013-02-12 22:39:38 +00:00
cpg
6d0db06931 interruptor support by Stefan Haubenthal 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5055 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2011-06-13 16:42:45 +00:00
cpg
7357b44104 don't use constructor to setup runtime stack 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4479 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-23 22:06:32 +00:00
cpg
2011f92c3a save a byte (idea by Uz, done by Daniel Serpell) 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4475 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-23 21:17:56 +00:00
cpg
61b2834508 don't call __getdevdef in crt0.s, but make it a constructor of getdefdev.s 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4473 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-19 22:12:51 +00:00
cpg
38901e1614 move setup of stdin/stdout/stderr from crt0.s to getfd.s 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4472 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-19 20:57:23 +00:00
cpg
9cafacaf6d introduce STARTUP segment to Atari platform 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3995 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-04 20:04:41 +00:00
uz
8216bf1d6a Force an import of the special symbol __STARTUP__ in the C compiler when 
main() is encountered. Define this symbol in the startup code. This will
automatically force linking of the startup code which can then reside inside
the standard library as any other object file.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3988 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-07-31 12:05:42 +00:00
cpg
2f39754838 use RUNAD (from atari.inc) instead of /bin/bash2E0 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3963 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-04-29 21:37:10 +00:00
cpg
e64672acc7 use __ZPSAVE_LOAD__ instead of __BSS_LOAD__ to create EXEHDR 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3851 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2008-07-04 17:32:00 +00:00
cuz
f257b2ee81 Moved the data that keeps a copy of the used zero page locations in its own 
segment to reduce the executable size.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3849 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2008-07-03 19:39:14 +00:00
cpg
be31ff1fe4 take __RESERVED_MEMORY__ from linker script into account when setting 
upper memory limit


git-svn-id: svn://svn.cc65.org/cc65/trunk@3569 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-08-07 15:48:32 +00:00
cpg
0093a8f388 startup code now resides in LOWCODE segment 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3444 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-03-31 21:53:12 +00:00
cuz
54240ffad3 Move constructor code into the INIT segment. Note: Didn't change any 
obsolete modules.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3407 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-02-26 09:38:46 +00:00
cpg
1727d49c8d DYNAMIC_DD support 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3334 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2004-12-16 22:43:47 +00:00
cuz
c15fd58d3b Use structs 
git-svn-id: svn://svn.cc65.org/cc65/trunk@2707 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2003-12-03 10:15:33 +00:00
cpg
624b88e976 use callmain; don't call getargs, it's now called from initlib 
(it's now a constructor)


git-svn-id: svn://svn.cc65.org/cc65/trunk@2298 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2003-08-12 19:59:51 +00:00
cpg
444aa7c944 turn on cursor before returning to DOS 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1486 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2002-11-05 00:35:16 +00:00
cuz
33c1e82bda Move zp space out of crt0.s 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1291 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2002-05-26 09:09:10 +00:00
cuz
d0599a24fe Move include files into /asminc, changed include file paths 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1249 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2002-04-21 14:19:16 +00:00
cuz
9cfcdfab53 Use _file.inc and its constants 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1206 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2002-03-24 13:32:13 +00:00
cpg
fb9da60180 adapted constructor function names to initxxx convention 
git-svn-id: svn://svn.cc65.org/cc65/trunk@579 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2000-12-09 22:31:07 +00:00