Posted By
siz
on 2020-12-01
07:57:34
|  Re: Cartridge and raster interrupts
In a cartridge ROM you *have to* use $0314/$0315 for interrupt as (because of ROM mapped in) is the only entry point you can change. Unless you copy your whole stuff from ROM to RAM and run it from there.
Be aware that writing $ff3f will switch off *all* ROMs including KERNAL so in that case you have to ensure that $fffe/$ffff interrupt vectors are initialized properly or interrupts are disabled.
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