Serial interrupt ACE: Difference between revisions
Added disassembly for the example in the page
(I found out that Evie actually discovered invalid printer opcodes way before I did, so I added attribution.) |
(Added disassembly for the example in the page) |
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Main code: 3E 81 E0 01 E0 02 F0 43
0E 01 A9 E0 43 C9
{{Explanation|title=Disassembly of the payload |contents=
ld a, $81 ; 3E 81
ldh [rSB], a ; E0 01
ldh [rSC], a ; E0 02 trigger serial transfer
ldh a, [rSCX] ; F0 43 read X scroll
ld c, $01 ; 0E 01
xor a, c ; A9 toggle X scroll LSB
ld [rSCX], a ; E0 43 write it back
ret ; C9}}
To prepare the setup:
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