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;;; Useful macros and constants for development on the MMC3 chip.
.scope MMC3
BANK_SELECT = $8000
BANK_DATA = $8001
MIRRORING = $A000
RAM_PROTECT = $A001
IRQ_LATCH = $C000
IRQ_RELOAD = $C001
IRQ_DISABLE = $E000
IRQ_ENABLE = $E001
.endscope
.macro BANK_REGISTER_SET REGISTER_ID, REGISTER_VALUE
.if REGISTER_ID < 0 || REGISTER_ID > 7
.error "bad value for REGISTER_ID when bank switching"
.endif
lda #REGISTER_ID
sta MMC3::BANK_SELECT
lda #REGISTER_VALUE
sta MMC3::BANK_DATA
.endmacro
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