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gbhw: flag constants for interrupts and timer registers

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yenatch
2013-08-27 23:37:24 -04:00
parent 651e0a4245
commit e48899c1f4
1 changed files with 14 additions and 0 deletions
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14
gbhw.asm
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@@ -21,15 +21,29 @@ RTC_DH EQU $0c ; Upper 1 bit of Day Counter, Carry Bit, Halt Flag
; Bit 6 Halt (0=Active, 1=Stop Timer) ; Bit 6 Halt (0=Active, 1=Stop Timer)
; Bit 7 Day Counter Carry Bit (1=Counter Overflow) ; Bit 7 Day Counter Carry Bit (1=Counter Overflow)
; interrupt flags
VBLANK EQU 0
LCD_STAT EQU 1
TIMER EQU 2
SERIAL EQU 3
JOYPAD EQU 4
; Hardware registers ; Hardware registers
rJOYP EQU $ff00 ; Joypad (R/W) rJOYP EQU $ff00 ; Joypad (R/W)
rSB EQU $ff01 ; Serial transfer data (R/W) rSB EQU $ff01 ; Serial transfer data (R/W)
rSC EQU $ff02 ; Serial Transfer Control (R/W) rSC EQU $ff02 ; Serial Transfer Control (R/W)
rSC_ON EQU 7
rSC_CGB EQU 1
rSC_CLOCK EQU 0
rDIV EQU $ff04 ; Divider Register (R/W) rDIV EQU $ff04 ; Divider Register (R/W)
rTIMA EQU $ff05 ; Timer counter (R/W) rTIMA EQU $ff05 ; Timer counter (R/W)
rTMA EQU $ff06 ; Timer Modulo (R/W) rTMA EQU $ff06 ; Timer Modulo (R/W)
rTAC EQU $ff07 ; Timer Control (R/W) rTAC EQU $ff07 ; Timer Control (R/W)
rTAC_ON EQU 2
rTAC_4096_HZ EQU 0
rTAC_262144_HZ EQU 1
rTAC_65536_HZ EQU 2
rTAC_16384_HZ EQU 3
rIF EQU $ff0f ; Interrupt Flag (R/W) rIF EQU $ff0f ; Interrupt Flag (R/W)
rNR10 EQU $ff10 ; Channel 1 Sweep register (R/W) rNR10 EQU $ff10 ; Channel 1 Sweep register (R/W)
rNR11 EQU $ff11 ; Channel 1 Sound length/Wave pattern duty (R/W) rNR11 EQU $ff11 ; Channel 1 Sound length/Wave pattern duty (R/W)