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SMAS Memory Map

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Regs Address Length Type Description Details
$4322 3 bytes SNES Register (DMA) rwl++++ A1T2L - DMA Source Address for Channel 2 low byte rwh++++ A1T2H - DMA Source Address for Channel 2 high byte rwb++++ A1B2 - DMA Source Address for Channel 2 bank byte bbbbbbbb hhhhhhhh llllllll This specifies the starting Address Bus A address for the DMA transfer, or the beginning of the HDMA table for HDMA transfers. Note that Bus A does not access the Bus B registers, so pointing this address at say $00:2100 results in open bus. The effect of writing this register during HDMA to the associated channel is unknown. However, current theory is that only $4324 will affect the transfer. The changes will take effect at the next HDMA init. During DMA, $4322/3 will be incremented or decremented as specified by $4322/3. However $4324 will NOT be adjusted. These registers will not be affected by HDMA. This register is set to $FF on power on, and is unchanged on reset.
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