mirror of https://github.com/mist64/msbasic.git
87 lines
3.7 KiB
ArmAsm
87 lines
3.7 KiB
ArmAsm
; Microsoft BASIC for 6502
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;
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; This is a single integrated assembly source tree that can generate any of seven different
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; versions of Microsoft BASIC for 6502.
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;
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; By running ./make.sh, this will generate all versions and compare them to the original
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; files byte by byte.
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;
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; The CC65 compiler suite is need to build this project.
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;
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; These are the first eight (knows) versions of Microsoft BASIC for 6502:
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;
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; Name Release MS Version ROM 9digit INPUTBUFFER extensions comment
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;---------------------------------------------------------------------------------------------------
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; Commodore BASIC 1 1977 Y Y ZP CBM
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; OSI BASIC 1977 1.0 REV 3.2 Y N ZP - CONFIG_10A
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; AppleSoft I 1977 1.1 N Y $0200 Apple CONFIG_11
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; KIM BASIC 1977 1.1 N Y ZP - CONFIG_11A
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; AppleSoft II 1978 Y Y $0200 Apple CONFIG_2
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; Commodore BASIC 2 1979 Y Y $0200 CBM CONFIG_2A
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; KBD BASIC 1980 Y N $0700 KBD CONFIG_2B
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; MicroTAN 1980 Y Y ZP - CONFIG_2C
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;
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; (Note that this assembly source cannot (yet) build AppleSoft II.)
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;
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; This lists the versions in the order in which they were forked from the Microsoft source base.
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; Commodore BASIC 1, as used on the original PET is the oldest known version of Microsoft BASIC
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; for 6502. It contains some additions to Microsoft's version, like Commodore-style file I/O.
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;
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; The CONFIG_n defines specify what Microsoft-version the OEM version is based on.
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; CONFIG_CBM1_PATCHES jump out into CBM1's binary patches instead of doing the right thing inline
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; CONFIG_CBM_ALL add all Commodore-specific additions except file I/O
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; CONFIG_DATAFLG ?
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; CONFIG_EASTER_EGG include the CBM2 "MICROSOFT!" easter egg
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; CONFIG_FILE support Commodore PRINT#, INPUT#, GET#, CMD
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; CONFIG_IO_MSB all I/O has bit #7 set
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; CONFIG_MONCOUT_DESTROYS_Y Y needs to be preserved when calling MONCOUT
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; CONFIG_NO_CR terminal doesn't need explicit CRs on line ends
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; CONFIG_NO_LINE_EDITING disable support for Microsoft-style "@", "_", BEL etc.
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; CONFIG_NO_POKE don't support PEEK, POKE and WAIT
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; CONFIG_NO_READ_Y_IS_ZERO_HACK don't do a ver volatile trick that saves one byte
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; CONFIG_NULL support for the NULL statement
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; CONFIG_PEEK_SAVE_LINNUM preserve LINNUM on a PEEK
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; CONFIG_PRINTNULLS whether PRINTNULLS does anything
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; CONFIG_PRINT_CR print CR when line end reached
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; CONFIG_RAM optimizations for RAM version of BASIC, only use on 1.x
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; CONFIG_ROR_WORKAROUND use workaround for buggy 6502s from 1975/1976; doesn't work with CONFIG_SMALL!
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; CONFIG_SAFE_NAMENOTFOUND check both bytes of the caller's address in NAMENOTFOUND
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; CONFIG_SCRTCH_ORDER where in the init code to call SCRTCH
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; CONFIG_SMALL use 6 digit FP instead of 9 digit, use 2 character error messages, don't have GET
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.debuginfo +
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.setcpu "6502"
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.macpack longbranch
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.include "defines.s"
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.include "macros.s"
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.include "zeropage.s"
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.include "header.s"
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.include "token.s"
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.include "error.s"
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.include "message.s"
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.include "memory.s"
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.include "program.s"
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.include "flow1.s"
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.include "loadsave.s"
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.include "flow2.s"
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.include "misc1.s"
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.include "print.s"
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.include "input.s"
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.include "eval.s"
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.include "var.s"
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.include "array.s"
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.include "misc2.s"
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.include "string.s"
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.include "misc3.s"
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.include "poke.s"
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.include "float.s"
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.include "chrget.s"
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.include "rnd.s"
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.include "trig.s"
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.include "init.s"
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.include "extra.s"
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