Table 6-28, Isa legacy i/o register summary – AMD Geode SC1201 User Manual
Page 188
188
AMD Geode™ SC1200/SC1201 Processor Data Book
Core Logic Module - Register Summary
32579B
Table 6-28. ISA Legacy I/O Register Summary
I/O Port
Type
Name
Reference
DMA Channel Control Registers (Table 6-43)
000h
R/W
DMA Channel 0 Address Register
001h
R/W
DMA Channel 0 Transfer Count Register
002h
R/W
DMA Channel 1 Address Register
003h
R/W
DMA Channel 1 Transfer Count Register
004h
R/W
DMA Channel 2 Address Register
005h
R/W
DMA Channel 2 Transfer Count Register
006h
R/W
DMA Channel 3 Address Register
007h
R/W
DMA Channel 3 Transfer Count Register
008h
Read
DMA Status Register, Channels 3:0
Write
DMA Command Register, Channels 3:0
009h
WO
Software DMA Request Register, Channels 3:0
00Ah
W
DMA Channel Mask Register, Channels 3:0
00Bh
WO
DMA Channel Mode Register, Channels 3:0
00Ch
WO
DMA Clear Byte Pointer Command, Channels 3:0
00Dh
WO
DMA Master Clear Command, Channels 3:0
00Eh
WO
DMA Clear Mask Register Command, Channels 3:0
00Fh
WO
DMA Write Mask Register Command, Channels 3:0
0C0h
R/W
DMA Channel 4 Address Register (Not used)
0C2h
R/W
DMA Channel 4 Transfer Count Register (Not Used)
0C4h
R/W
DMA Channel 5 Address Register
0C6h
R/W
DMA Channel 5 Transfer Count Register
0C8h
R/W
DMA Channel 6 Address Register
0CAh
R/W
DMA Channel 6 Transfer Count Register
0CCh
R/W
DMA Channel 7 Address Register
0CEh
R/W
DMA Channel 7 Transfer Count Register
0D0h
Read
DMA Status Register, Channels 7:4
Write
DMA Command Register, Channels 7:4
0D2h
WO
Software DMA Request Register, Channels 7:4
0D4h
W
DMA Channel Mask Register, Channels 7:4
0D6h
WO
DMA Channel Mode Register, Channels 7:4
0D8h
WO
DMA Clear Byte Pointer Command, Channels 7:4
0DAh
WO
DMA Master Clear Command, Channels 7:4
0DCh
WO
DMA Clear Mask Register Command, Channels 7:4
0DEh
WO
DMA Write Mask Register Command, Channels 7:4
DMA Page Registers (Table 6-44)
081h
R/W
DMA Channel 2 Low Page Register
082h
R/W
DMA Channel 3 Low Page Register
083h
R/W
DMA Channel 1 Low Page Register
087h
R/W
DMA Channel 0 Low Page Register
089h
R/W
DMA Channel 6 Low Page Register
08Ah
R/W
DMA Channel 7 Low Page Register
08Bh
R/W
DMA Channel 5 Low Page Register
08Fh
R/W
Sub-ISA Refresh Low Page Register
481h
R/W
DMA Channel 2 High Page Register
482h
R/W
DMA Channel 3 High Page Register
483h
R/W
DMA Channel 1 High Page Register