pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 158

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

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6.7.2
0
0
1
7
7
7
7
Printer Status
Reserved
0
0
1
6
6
6
6
D7
A7
ECP Modes
ACK Status
Reserved
0
0
0
5
5
5
5
D6
A6
Direction Control
PE Status
0
0
0
4
4
4
4
D5
A5
Bits 7-5 of ECR = 000 or 001
Interrupt Enable
SLCT Status
0
0
0
3
3
3
3
D4
A4
Bits 7-5 of ECR = 011
ERR Status
Parallel Port Input Control
0
0
1
0
2
2
2
2
D3
A3
Reserved
Data Bits
Address Bits
Printer Initialization Control
0
0
1
0
1
1
1
1
D2
A2
Reserved
Automatic Line Feed Control
0
0
1
0
0
0
0
0
D1
A1
Reset
Required
Reset
Required
Reset
Required
Reset
Required
EPP Time-Out Status
Data Strobe Control
D0
A0
ECP Address Register
ECP Status Register
ECP Data Register
Register (DCR)
ECP Control
Parallel Port (Logical Device 4)
Offset 000h
Offset 000h
Offset 001h
Offset 002h
(DATAR)
(AFIFO)
(DSR)
158
0
0
0
0
0
7
7
7
7
Always 0
D7
D7
D7
0
0
0
0
0
6
6
6
6
Always 0
D6
D6
D6
0
0
0
0
0
5
5
5
5
D5
D5
D5
Always 0
0
0
0
1
1
4
4
4
4
D4
Always 1
D4
D4
0
0
0
0
3
3
3
3
Bits 7-5 of ECR = 010
Bits 7-5 of ECR = 011
Bits 7-5 of ECR = 110
Bits 7-5 of ECR = 111
D3
D3
D3
Bit 7 of PP Confg0
0
0
1
1
0
2
2
2
2
Data Bits
Data Bits
Data Bits
D2
D2
D2
Always 1
0
0
0
0
0
1
1
1
1
D1
D1
D1
Always 0
0
0
0
0
0
0
0
0
0
D0
D0
D0
Configuration Register A
Reset
Required
Reset
Required
Reset
Required
Reset
Required
Always 0
Parallel Port FIFO
Register (CFIFO)
Register (DFIFO)
Register (TFIFO)
ECP Data FIFO
Offset 400h
Offset 400h
Offset 400h
Offset 400h
Test FIFO
(CNFGA)