ymf744 ETC-unknow, ymf744 Datasheet - Page 45
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ymf744
Manufacturer Part Number
ymf744
Description
Ds-1s
Manufacturer
ETC-unknow
Datasheet
1.YMF744.pdf
(60 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ymf744B-R
Manufacturer:
YAMAHA
Quantity:
20 000
Part Number:
ymf744B-V
Manufacturer:
YAMA
Quantity:
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YMF744B
3-2. D-DMA
DS-1S 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.
These registers can be accessed by 8-bit or 16-bit bus width.
DS-1S supports 8-bit DMA transfer only.
Slave Address
Base + Ah
Base + Dh
Base + Bh
Base + Ch
Base + Eh
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 + Fh
R/W
R/W
N/A
N/A
N/A
W
W
W
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
R
-45-
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
Command
Status
Request
Reserved
Mode
Reserved
Master Clear
Reserved
Multi-Channel Mask
February 3, 1999