82371FB Datasheet, PDF (27/122 Pages) Intel Corporation – 82371FB (PIIX) AND 82371SB (PIIX3) PCI ISA IDE XCELERATOR

E
82371FB (PIIX) AND 82371SB (PIIX3)
Address
(hex)
0000h3
0001h3
0002h3
0003h3
0004h3
0005h3
0006h3
0007h3
0008h3
0009h3
000Ah3
000Bh3
000Ch3
000Dh3
000Eh3
000Fh3
0020h
0021h
0040h
0041h
0042h
0043h
0060h1
0061h
Table 5. ISA-Compatible and Power Management Registers
Address (bits)
Type
Name
FEDC BA98
7654
3210
0000
0000
000x
0000
r/w
DMA1 CH0 Base and Current
Address
0000
0000
000x
0001
r/w
DMA1 CH0 Base and Current
Count
0000
0000
000x
0010
r/w
DMA1 CH1 Base and Current
Address
0000
0000
000x
0011
r/w
DMA1 CH1 Base and Current
Count
0000
0000
000x
0100
r/w
DMA1 CH2 Base and Current
Address
0000
0000
000x
0101
r/w
DMA1 CH2 Base and Current
Count
0000
0000
000x
0110
r/w
DMA1 CH3 Base and Current
Address
0000
0000
000x
0111
r/w
DMA1 CH3 Base and Current
Count
0000
0000
000x
1000
r/w
DMA1 Status(r) Command(w)
Register
0000
0000
000x
1001
wo
DMA1 Write Request
0000
0000
000x
1010
wo
DMA1 Write Single Mask Bit
0000
0000
000x
1011
wo
DMA1 Write Mode
0000
0000
000x
1100
wo
DMA1 Clear Byte Pointer
0000
0000
000x
1101
wo
DMA1 Master Clear
0000
0000
000x
1110
wo
DMA1 Clear Mask
0000
0000
000x
1111
r/w
DMA1 Read/Write All Mask
Register Bits
0000
0000
001x
xx00
r/w
INT 1 Control
0000
0000
001x
xx01
r/w
INT 1 Mask
0000
0000
010x
0000
r/w
Timer Counter 1 - Counter 0 Count
0000
0000
010x
0001
r/w
Timer Counter 1 - Counter 1 Count
0000
0000
010x
0010
r/w
Timer Counter 1 - Counter 2 Count
0000
0000
010x
0011
wo
Timer Counter 1 Command Mode
0000
0000
0110
0000
r
Reset XBus IRQ12/M and IRQ1
0000
0000
0110
0001
r/w
NMI Status and Control
Access
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI/ISA
PCI/ISA
PCI/ISA
PCI/ISA
PCI/ISA
PCI/ISA
PCI/ISA
PCI/ISA
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