82C836 Datasheet, PDF (111/205 Pages) List of Unclassifed Manufacturers – Single-Chip 386sx AT

Address Maps
Table 9-9. DMA Controller II
I/O Address
00C0H
00C2H
00C4H
00C6H
00C8H
00CAH
00CCH
00CEH
00D0H
00D2H
00D4H
00D6H
00D8H
00DAH
00DCH
00DEH
00DFH
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
I/O Address Maps s
Description
Channel 0 Base and Current Address
Channel 0 Base and Current Word Count
Channel 1 Base and Current Address
Channel 1 Base and Current Word Count
Channel 2 Base and Current Address
Channel 2 Base and Current Word Count
Channel 3 Base and Current Address
Channel 3 Base and Current Word Count
Read Status Register/Write Command Register 0
Write Requrest Register
Write Single Mask Register Bit
Write Mode Register
Clear Byte Pointer Flip-Flop
Read Temporary Register/Write Master Clear 0
Clear Mask Register
Write All Mask Register Bits
DMA Write All Mask Register Bits
Table 9-10. Coprocessor Registers
I/O Address
00F0H
00F1H
Read/Write
W
W
Description
Clear Coprocessor Busy
Not Used in the 82C836
Table 9-11. EMS Page Registers
I/O Address
02x8H^†
02x9H^†
02xAH^†
Read/Write
R/W
R/W
R/W
† x = 0 or 1 depending on ICR 4F Bit 0.
Description
EMS Page Register, A21-A14
EMS Page Register, Enable and A23-A22
EMS Page Register Select
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Revision 3.0 9-5