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The driver requires a special linker configuration: "vic20-tgi.cfg". The VIC-20 computer needs at least 8K of expansion RAM! "tgidemo.c" needed to be adjusted because the VIC-20's vertical (y) range is greater than its horizontal (x) range -- the opposite of most other platforms. Also, the circle demo would jam on the VIC-20.
51 lines
2.0 KiB
INI
51 lines
2.0 KiB
INI
# Memory configuration which supports the "vic20-hi.tgi" driver.
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# Memory configuration for a VIC-20 with, at least, 8K expansion RAM.
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FEATURES {
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STARTADDRESS: default = $1201;
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}
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SYMBOLS {
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__LOADADDR__: type = import;
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__EXEHDR__: type = import;
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__TGIHDR__: type = import;
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__STACKSIZE__: type = weak, value = $0200; # 512-byte stack
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__HIMEM__: type = weak, value = $4000;
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}
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MEMORY {
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ZP: file = "", define = yes, start = $0002, size = $001A;
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LOADADDR: file = %O, start = %S - 2, size = $0002;
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HEADER: file = %O, define = yes, start = %S, size = $003E;
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MAIN: file = %O, define = yes, start = $2000, size = __HIMEM__ - __MAIN_START__ - __STACKSIZE__;
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}
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SEGMENTS {
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ZEROPAGE: load = ZP, type = zp;
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LOADADDR: load = LOADADDR, type = ro;
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# The start-up code needs EXEHDR, TGI1HDR, TGI2HDR,
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# and STARTUP to be next to each other, in that order.
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EXEHDR: load = HEADER, type = ro;
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TGI1HDR: load = HEADER, type = ro;
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TGI2HDR: load = MAIN, type = ro;
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STARTUP: load = MAIN, type = ro;
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LOWCODE: load = MAIN, type = ro, optional = yes;
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CODE: load = MAIN, type = ro;
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RODATA: load = MAIN, type = ro;
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DATA: load = MAIN, type = rw;
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ONCE: load = MAIN, type = ro, optional = yes, define = yes;
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INIT: load = MAIN, type = bss, optional = yes;
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BSS: load = MAIN, 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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