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open-roms/c64/kernal/iostack/f49e.load_int.s
T
2019-10-28 21:27:26 +01:00

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309 B
ArmAsm

//
// Note: Although the vector at $330 points to $F4A5, the Kernal jump table points to $F49E
// (see also Mapping the C64, page 76). By experimenting I have discovered that $F49E performs
// indirect jump via ($0330) vector, after setting MEMUSS.
//
LOAD_INT:
sty MEMUSS+1
stx MEMUSS+0
jmp (ILOAD)