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cc65 - a freeware C compiler for 6502 based systems
4065cb1983
The Apple2 doesn't have sprites so the Apple2 mouse callbacks place a special character on the text screen to indicate the mouse position. In order to support the necessary character removing and redrawing the Apple2 mouse driver called the Apple2 mouse callbacks in an "unusual way". So far so (sort of) good. However the upcoming Atari mouse driver aims to support both "sprite-type" mouse callbacks as well as "text-char-type" mouse callbacks. Therefore the interface between mouse drivers and callbacks needs to be extended to allow the mouse callbacks to hide their different types from the mouse driver. The nature of this change can be seen best by looking at the Apple2 file modifications. The CBM drivers and callbacks (at least the current ones) don't benefit from this change. |
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asminc | ||
cfg | ||
include | ||
libsrc | ||
samples | ||
src | ||
testcode | ||
util | ||
.gitignore | ||
.travis.yml | ||
LICENSE | ||
Makefile | ||
README |
cc65 is a complete cross development package for 65(C)02 systems, including a powerful macro assembler, a C compiler, linker, librarian and several other tools. cc65 has C and runtime library support for many of the old 6502 machines, including - the following Commodore machines: VIC20 C16/C116 and Plus/4 C64 C128 CBM 510 (aka P500) the 600/700 family newer PET machines (not 2001). - the Apple ][+ and successors. - the Atari 8 bit machines. - GEOS for the C64 and C128. - the Nintendo Entertainment System (NES). - the Supervision console. - the Oric Atmos. - the Lynx console. The libraries are fairly portable, so creating a version for other 6502s shouldn't be too much work.