24 lines
514 B
ArmAsm
24 lines
514 B
ArmAsm
|
|
//
|
|
// LOAD preparation routine
|
|
//
|
|
|
|
//
|
|
// Input (according to http://sta.c64.org/cbm64krnfunc.html)
|
|
// .A - 0 for load, non-0 for verify
|
|
// .X and .Y - load address (if secondary address is 0)
|
|
//
|
|
|
|
//
|
|
// 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_PREP:
|
|
|
|
sty MEMUSS+1
|
|
stx MEMUSS+0
|
|
jmp (ILOAD)
|