EPC-3307 Hardware Reference
76
Table A-13. Second (16-bit) DMA controller
I/O Addr
Functional group
R/W
Usage
00C0
DMA controller 2
R/W
DMA 2 channel 4 address
00C2
R/W
DMA 2 channel 4 count
00C4
R/W
DMA 2 channel 5 address
00C6
R/W
DMA 2 channel 5 count
00C8
R/W
DMA 2 channel 6 address
00CA
R/W
DMA 2 channel 6 count
00CC
R/W
DMA 2 channel 7 address
00CE
R/W
DMA 2 channel 7 count
00D0
R
W
DMA 2 status
DMA 2 command
00D2
W
DMA 2 write request
00D4
W
DMA 2 write single mask bit
00D6
W
DMA 2 write mode
00D8
W
DMA 2 clear byte pointer
00DA
W
DMA 2 master clear
00DC
W
DMA 2 clear mask
00DE
R/W
DMA 2 read/write all register mask
bits
Table A-14. Coprocessor interface
I/O Addr
Functional group
R/W
Usage
00F0
Coprocessor
W
Coprocessor error
Table A-15. VGA controller
I/O Addr
Functional group
R/W
Usage
x102
VGA controller
R/W
POS102 register
Table A-16. Secondary IDE
I/O Addr
Functional group
R/W
Usage
0170
Secondary IDE
R/W
Data
0171
R/W
Error/features
0172
R/W
Sector count
0173
R/W
Sector number
0174
R/W
Cylinder low
0175
R/W
Cylinder high
0176
R/W
Drive/head
0177
R/W
Status/command
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