Created
May 5, 2025 22:09
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rSB log test
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| INCLUDE "hardware.inc" | |
| SECTION "HRAM", HRAM | |
| wait_for_vblank: | |
| ds 1 | |
| SECTION "VBLANK", ROM0[INT_HANDLER_VBLANK] | |
| push af | |
| xor a | |
| ldh [wait_for_vblank], a | |
| pop af | |
| reti | |
| SECTION "HEADER", ROM0[$100] | |
| jp EntryPoint | |
| ds $150 - @, 0 | |
| EntryPoint: | |
| ; Shut down audio circuitry | |
| ldh [rNR52], a | |
| ld hl, $e000 | |
| ld sp, hl | |
| ld a, IEF_VBLANK | IEF_STAT | |
| ldh [rIE], a | |
| ei | |
| : call WaitVBlank | |
| ld a, 0 ; start by writing the byte 0 to the output. this is non-ascii | |
| rept 8 ; try writing eight times | |
| ld [rSB], a | |
| inc a ; increment the byte we're sending just so we get variety in the logs | |
| endr | |
| jr :- | |
| WaitVBlank:: | |
| push af | |
| ld a, 1 | |
| ldh [wait_for_vblank], a | |
| : halt | |
| nop | |
| ldh a, [wait_for_vblank] | |
| or a | |
| jr nz, :- | |
| pop af | |
| ret |
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