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MBC3 constants
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gbhw.asm
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gbhw.asm
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; Graciously aped from http://nocash.emubase.de/pandocs.htm .
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; MBC3
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MBC3SRamEnable EQU $0000
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MBC3RomBank EQU $2000
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MBC3SRamBank EQU $4000
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MBC3LatchClock EQU $6000
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MBC3RTC EQU $a000
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SRAM_DISABLE EQU $00
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SRAM_ENABLE EQU $0a
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RTC_S EQU $08 ; Seconds 0-59 (0-3Bh)
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RTC_M EQU $09 ; Minutes 0-59 (0-3Bh)
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RTC_H EQU $0a ; Hours 0-23 (0-17h)
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RTC_DL EQU $0b ; Lower 8 bits of Day Counter (0-FFh)
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RTC_DH EQU $0c ; Upper 1 bit of Day Counter, Carry Bit, Halt Flag
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; Bit 0 Most significant bit of Day Counter (Bit 8)
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; Bit 6 Halt (0=Active, 1=Stop Timer)
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; Bit 7 Day Counter Carry Bit (1=Counter Overflow)
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; Hardware registers
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rJOYP EQU $ff00 ; Joypad (R/W)
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rSB EQU $ff01 ; Serial transfer data (R/W)
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rSC EQU $ff02 ; Serial Transfer Control (R/W)
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