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The targets allow to run cc65 programs in the sim65 exection einvironment. As there are no "real" i/o facilities there's no need for header files. Paravirtualized entry points are mapped to $FFF0 ff. There's a large cc65 progam area from $0200-$FFEF. The binary format includes a one-byte header indicating the required execution environment: The value 0 means 6502 and the value 1 means 65C02. The load adress for the binary is fixed to $0200. Note: Running sim65C02 programs currently doesn't work bcause sim65 doesn't actually implement 65C02 opcodes.
36 lines
1.3 KiB
INI
36 lines
1.3 KiB
INI
SYMBOLS {
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__EXEHDR__: type = import;
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__STACKSIZE__: type = weak, value = $0800; # 2k stack
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}
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MEMORY {
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ZP: file = "", start = $0000, size = $001A;
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HEADER: file = %O, start = $0000, size = $0001;
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RAM: file = %O, define = yes, start = $0200, size = $FDF0 - __STACKSIZE__;
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}
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SEGMENTS {
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EXEHDR: load = HEADER, type = ro;
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STARTUP: load = RAM, type = ro;
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LOWCODE: load = RAM, type = ro, optional = yes;
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INIT: load = RAM, type = ro, define = yes, optional = yes;
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CODE: load = RAM, type = ro;
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RODATA: load = RAM, type = ro;
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DATA: load = RAM, type = rw;
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BSS: load = RAM, type = bss, define = yes;
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ZEROPAGE: load = ZP, type = zp;
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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 = INIT;
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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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