YMF724F
3-2. D-DMA
DS-1 provides the following registers to support D-DMA. D-DMA Slave Configuration Register (4C-4Dh)
of the PCI Configuration register is used to set the Base address of the Slave Address.
Slave Address
Base + 0h
Base + 0h
Base + 1h
Base + 1h
Base + 2h
Base + 2h
Base + 3h
Base + 3h
Base + 4h
Base + 4h
Base + 5h
Base + 5h
Base + 6h
Base + 6h
Base + 7h
Base + 8h
Base + 8h
Base + 9h
Base + Ah
Base + Bh
Base + Ch
Base + Dh
Base + Eh
Base + Fh
R/W
W
R
Register Name
Base Address 0-7
Current Address 0-7
Base Address 8-15
Current Address 8-15
Base Address 16-23
Current Address 16-23
Base Address 24-31
Current Address 24-31
Base Word Count 0-7
Current Word Count 0-7
Base Word Count 8-15
Current Word Count 8-15
Base Word Count 16-23
Current Word Count 16-23
Reserved
W
R
W
R
W
R
W
R
W
R
W
R
N/A
W
R
Command
Status
W
N/A
W
W
W
N/A
R/W
Request
Reserved
Mode
Reserved
Master Clear
Reserved
Multi-Channel Mask
These registers can be accessed by 8-bit or 16-bit bus width.
DS-1 supports 8-bit DMA transfer only.
January 14, 1999
-39-
YAMAHA [ YAMAHA CORPORATION ]
