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cc65/cfg/apple2enh-asm.cfg

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Added basic Apple linker config for assembler programs (similiar to C64). git-svn-id: svn://svn.cc65.org/cc65/trunk@5717 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-14 20:59:08 +00:00
# Configuration for assembler programs which don't need a special setup
FEATURES {
STARTADDRESS: default = $0803;
}
MEMORY {
Moved run location of ONCE segment. Make the same changes to the Apple II that were done with https://github.com/cc65/cc65/commit/0ee9b2e446198746c3a05b142ecd00784becf727 to the C64. Notes: - The startup code deliberately doesn't make use of symbols defined for the LC segment as that segment is optional. - The <...>-asm.cfg configs move the segment BSS to an own memory area BSS although this doesn't seem necessary. However the benefit is that the size of the memeory area MAIN is identical to the number of bytes loaded from disk into RAM. To keep this an invariant for all Apple II configs allows to simplify the EXEHDR to just refer to the symbols defined for MAIN.
2016-03-17 20:07:19 +00:00
ZP: file = "", start = $0000, size = $00FF;
HEADER: file = %O, start = %S - 4, size = $0004;
MAIN: file = %O, define = yes, start = %S, size = $C000 - %S;
BSS: file = "", start = __MAIN_LAST__, size = $C000 - __MAIN_LAST__;
Added basic Apple linker config for assembler programs (similiar to C64). git-svn-id: svn://svn.cc65.org/cc65/trunk@5717 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-14 20:59:08 +00:00
}
SEGMENTS {
Moved run location of ONCE segment. Make the same changes to the Apple II that were done with https://github.com/cc65/cc65/commit/0ee9b2e446198746c3a05b142ecd00784becf727 to the C64. Notes: - The startup code deliberately doesn't make use of symbols defined for the LC segment as that segment is optional. - The <...>-asm.cfg configs move the segment BSS to an own memory area BSS although this doesn't seem necessary. However the benefit is that the size of the memeory area MAIN is identical to the number of bytes loaded from disk into RAM. To keep this an invariant for all Apple II configs allows to simplify the EXEHDR to just refer to the symbols defined for MAIN.
2016-03-17 20:07:19 +00:00
ZEROPAGE: load = ZP, type = zp, optional = yes;
EXEHDR: load = HEADER, type = ro, optional = yes;
Harmonized asm linker configs. - All segments but CODE are optional and CODE is R/W. Both together allow to "just" write code/data without ever explicitly using a segment. - Symbols are defined for the BSS. This allows to use/implement zerobss. - The ZP memory area isn't artificially limited.
2016-03-17 20:51:20 +00:00
CODE: load = MAIN, type = rw;
Moved run location of ONCE segment. Make the same changes to the Apple II that were done with https://github.com/cc65/cc65/commit/0ee9b2e446198746c3a05b142ecd00784becf727 to the C64. Notes: - The startup code deliberately doesn't make use of symbols defined for the LC segment as that segment is optional. - The <...>-asm.cfg configs move the segment BSS to an own memory area BSS although this doesn't seem necessary. However the benefit is that the size of the memeory area MAIN is identical to the number of bytes loaded from disk into RAM. To keep this an invariant for all Apple II configs allows to simplify the EXEHDR to just refer to the symbols defined for MAIN.
2016-03-17 20:07:19 +00:00
RODATA: load = MAIN, type = ro, optional = yes;
DATA: load = MAIN, type = rw, optional = yes;
BSS: load = BSS, type = bss, optional = yes, define = yes;
Added basic Apple linker config for assembler programs (similiar to C64). git-svn-id: svn://svn.cc65.org/cc65/trunk@5717 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-14 20:59:08 +00:00
}
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