ae82caca45
Removed mask from rupeelimit.asm as total item counter is now a 16-bit value Commented out CountBits in utilities.asm in previous commit as I've allocated a counter byte in SRAM
60 lines
1.6 KiB
NASM
60 lines
1.6 KiB
NASM
;================================================================================
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; Frame Hook
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;--------------------------------------------------------------------------------
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FrameHookAction:
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JSL $0080B5 ; Module_MainRouting
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JSL CheckMusicLoadRequest
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PHP : REP #$30 : PHA
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SEP #$20
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LDA StatsLocked : BNE ++
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REP #$20 ; set 16-bit accumulator
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LDA LoopFrames : INC : STA LoopFrames : BNE +
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LDA LoopFrames+2 : INC : STA LoopFrames+2
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+
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LDA $10 : CMP.w #$010E : BNE + ; move this to nmi hook?
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LDA MenuFrames : INC : STA MenuFrames : BNE +
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LDA MenuFrames+2 : INC : STA MenuFrames+2
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+
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++
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REP #$30 : PLA : PLP
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RTL
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;--------------------------------------------------------------------------------
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NMIHookAction:
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PHA : PHX : PHY : PHD ; thing we wrote over, push stuff
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LDA StatsLocked : AND.w #$00FF : BNE ++
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LDA NMIFrames : INC : STA NMIFrames : BNE +
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LDA NMIFrames+2 : INC : STA NMIFrames+2
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+
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++
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JML.l NMIHookReturn
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;--------------------------------------------------------------------------------
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!NMI_AUX = "$7F5044"
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PostNMIHookAction:
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LDA !NMI_AUX : BEQ +
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LDA $00 : PHA ; preserve DP ram
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LDA $01 : PHA
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LDA $02 : PHA
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LDA !NMI_AUX+2 : STA $02 ; set up jump pointer
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LDA !NMI_AUX+1 : STA $01
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LDA !NMI_AUX+0 : STA $00
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PHK : PER .return-1 ; push stack for RTL return
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JMP [$0000]
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.return
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LDA.b #$00 : STA !NMI_AUX ; zero bank byte of NMI hook pointer
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PLA : STA $02
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PLA : STA $01
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PLA : STA $00
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+
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LDA $13 : STA $2100 ; thing we wrote over, turn screen back on
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JML.l PostNMIHookReturn
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;--------------------------------------------------------------------------------
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