pokered/engine/oam_dma.asm

WriteDMACodeToHRAM:
; Since no other memory is available during OAM DMA,
; DMARoutine is copied to HRAM and executed there.
	ld c, $ff80 % $100
	ld b, DMARoutineEnd - DMARoutine
	ld hl, DMARoutine
.copy
	ld a, [hli]
	ld [$ff00+c], a
	inc c
	dec b
	jr nz, .copy
	ret

DMARoutine:
	; initiate DMA
	ld a, wOAMBuffer / $100
	ld [$ff46], a

	; wait for DMA to finish
	ld a, $28
.wait	dec a
	jr nz, .wait
	ret
DMARoutineEnd:
Try to clean up PrepareOAMData. 2014-05-26 02:23:12 +00:00			`WriteDMACodeToHRAM:`
			`; Since no other memory is available during OAM DMA,`
			`; DMARoutine is copied to HRAM and executed there.`
			`ld c, $ff80 % $100`
			`ld b, DMARoutineEnd - DMARoutine`
			`ld hl, DMARoutine`
			`.copy`
			`ld a, [hli]`
			`ld [$ff00+c], a`
			`inc c`
			`dec b`
			`jr nz, .copy`
			`ret`

			`DMARoutine:`
			`; initiate DMA`
More wOAMBuffer references. 2014-05-27 18:08:52 +00:00			`ld a, wOAMBuffer / $100`
Try to clean up PrepareOAMData. 2014-05-26 02:23:12 +00:00			`ld [$ff46], a`

			`; wait for DMA to finish`
			`ld a, $28`
			`.wait dec a`
			`jr nz, .wait`
			`ret`
			`DMARoutineEnd:`