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Fixes for File Delete screen

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Kevin Cathcart
2018-07-29 14:16:57 -04:00
parent d0a5499c1b
commit f4221156ec
2 changed files with 23 additions and 10 deletions
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22
hashalphabet.asm
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@@ -186,19 +186,21 @@ DMAAlphabetTilemap:
PLA : STA $2100 ; put screen back however it was before
;--------------------------------------------------------------------------------
LDA.b #$00 : STA $4300 ; set DMA transfer direction A -> B, bus A auto increment, single-byte mode
LDA.b #$22 : STA $4301 ; set bus B destination to CGRAM register
STZ $2121 ; write CGRAM destination address
LDA.b #$80 : STA $4301 ; set bus B destination to WRAM register
STZ $2181 ; set WRAM register source address
LDA.b #$C5 : STA $2182
LDA.b #$7E : STA $2183
LDA.b #GFX_HUD_Palette : STA $4302 ; set bus A source address to WRAM
LDA.b #GFX_HUD_Palette>>8 : STA $4303 ; set bus A source address to WRAM
LDA.b #GFX_HUD_Palette>>16 : STA $4304 ; set bus A source bank
LDA.b #$80 : STA $4305 : STZ $4306 ; set transfer size to 0x40
LDA $2100 : PHA : LDA.b #$80 : STA $2100 ; save screen state & turn screen off
LDA #$01 : STA $420B ; begin DMA transfer
PLA : STA $2100 ; put screen back however it was before
LDA.b #$40 : STA $4305 : STZ $4306 ; set transfer size to 0x40
LDA #$01 : STA $420B ; begin DMA transfer
INC $15 ; ensure CGRAM gets updated
;--------------------------------------------------------------------------------
PLA : STA $4306 ; restore DMA parameters
PLA : STA $4305 ; restore DMA parameters