Serial Input Byte Pointer; General Purpose Output; Hot-Plug Non-Interrupt Inputs; Hot-Plug Slot Identifier - Intel 460GX Software Developer’s Manual

8.2.8

Serial Input Byte Pointer

Address Offset:
Default Value:
Used to input a byte into the IHPC input registers. The byte number is written to the pointer. After
the Serial Input Busy Status is read as a logic zero, the requested byte will be in the Serial Input
Data Register. The contents will be a copy of the corresponding byte in the Interrupting Input and
Clear Register (least significant) or Non-Interrupting Inputs Register (most significant).
Bits
7
6:4
3:0
8.2.9

General Purpose Output

Address Offset:
Default Value:
These bits are only driven out following SOGO/LED cycles.
Bits
7:6
5:0
8.2.10

Hot-Plug Non-interrupt Inputs

Address Offset:
Default Value:
Bits
31:6
5
4
3
2
1
0
8.2.11

Hot-Plug Slot Identifier

Address Offset:
Default Value:
This register is a copy of Configuration Register 40h, byte 0.
Intel® 460GX Chipset Software Developer's Manual
11h
00h
Description
Serial Input Busy Status: RO
reserved (0)
Serial Input Byte Pointer. RW
13h
00h
Description
reserved (0)
General Purpose Output bits (one bit per supported slot). Slot F is MSB. Slot A is LSB.
14h
Description
reserved (0)
Slot F M66EN, PCI 66 MHz Clock Enable
Slot E M66EN, PCI 66 MHz Clock Enable
Slot D M66EN, PCI 66 MHz Clock Enable
Slot C M66EN, PCI 66 MHz Clock Enable
Slot B M66EN, PCI 66 MHz Clock Enable
Slot A M66EN, PCI 66 MHz Clock Enable
28h
0000h
Size: 16 bits
Attribute: Read/Write, Read-Only
Size: 8 bits
Attribute: Read/Write (Pwr Good Rst Only)
Size:
Attribute:
Size:
Attribute:
WXB Hot-Plug
32 bits
Read Only
16 bits
Read/Write
8-17