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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.
52 lines
2.2 KiB
INI
52 lines
2.2 KiB
INI
# linker config to produce simple Gamate cartridge (.bin)
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SYMBOLS {
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__STARTUP__: type = import;
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__STACKSIZE__: type = weak, value = $0080; # 1 page stack
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}
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MEMORY {
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# 0000-03ff is RAM
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# FIXME: what zp range can we actually use?
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# $0a-$11 is used by IRQ/NMI, $e8 is used by NMI
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ZP: start = $0012, size = $00E8 - $0012;
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CPUSTACK: start = $0100, size = $0100;
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RAM: start = $0200, size = $0200 - __STACKSIZE__, define = yes;
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CARTHEADER: file = %O, define = yes, start = %S, size = $0029;
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# 6000-e000 can be (Cartridge) ROM
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# WARNING: fill value must be $00 else it will no more work
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#ROM: start = $6000, size = $1000, fill = yes, fillval = $00, file = %O, define = yes;
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#ROMFILL: start = $7000, size = $7000, fill = yes, fillval = $00, file = %O, define = yes;
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# for images that have code >$6fff we must calculate the checksum!
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ROM: start = $6000 + $0029, size = $8000 - $0029, fill = yes, fillval = $00, file = %O, define = yes;
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}
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SEGMENTS {
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ZEROPAGE: load = ZP, type = zp, define = yes;
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EXTZP: load = ZP, type = zp, define = yes, optional = yes;
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APPZP: load = ZP, type = zp, define = yes, optional = yes;
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STARTUP: load = CARTHEADER, type = ro, define = yes;
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ONCE: load = ROM, type = ro, define = yes, optional = yes;
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CODE: load = ROM, type = ro, define = yes;
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RODATA: load = ROM, type = ro, define = yes;
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DATA: load = ROM, run = RAM, type = rw, define = yes;
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BSS: load = RAM, type = bss, define = yes;
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}
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FEATURES {
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CONDES: type = constructor,
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label = __CONSTRUCTOR_TABLE__,
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count = __CONSTRUCTOR_COUNT__,
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segment = ONCE;
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CONDES: type = destructor,
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label = __DESTRUCTOR_TABLE__,
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count = __DESTRUCTOR_COUNT__,
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segment = RODATA;
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CONDES: type = interruptor,
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label = __INTERRUPTOR_TABLE__,
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count = __INTERRUPTOR_COUNT__,
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segment = RODATA,
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import = __CALLIRQ__;
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}
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