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WXB Hot-Plug
8-18 Intel® 460GX Chipset Software Developer’s Manual
8.2.12 Hot-Plug Switch Interrupt Redirect Enable
Address Offset: 2Ch Size: 8 bits
Default Value: 00h Attribute: Read/Write
This register allows the slot switch change interrupts to be redirected to the SERR# instead of the
INTA#.
Bits
Description
7:6 reserved (0)
5 Slot F INTR Redirect Enable
4 Slot E INTR Redirect Enable
3 Slot D INTR Redirect Enable
2 Slot C INTR Redirect Enable
1 Slot B INTR Redirect Enable
0 Slot A INTR Redirect Enable
8.2.13 Slot Power Control
Address Offset: 2Dh Size: 8 bits
Default Value: Sampled at PWRGD Attribute: Read/Write (Pwr Good Rst Only)
This register is used to power a slot without connecting it to the bus. SOGO must be set to cause
the output sequence. Slots that are connected to the bus cannot be powered down through this
register (the Slot Enable register is used instead). The set of usable Slot Power Control bits is
determined by the strapping values on the P(A,B)HSIL, P(A,B)HSOL, and P(A,B)HSOC inputs.
Unsupported slots in a system do not have writeable Slot Power Control bits.
Bits
Description
7:6 reserved (0)
5 Enable Power to Slot F. When 1, slot F is powered up. When 0, slot F is powered down
4 Enable Power to Slot E. When 1, slot E is powered up. When 0, slot E is powered down
3 Enable Power to Slot D. When 1, slot D is powered up. When 0, slot D is powered down
2 Enable Power to Slot C. When 1, slot C is powered up. When 0, slot C is powered down
1 Enable Power to Slot B. When 1, slot B is powered up. When 0, slot B is powered down
0 Enable Power to Slot A. When 1, slot A is powered up. When 0, slot A is powered down
8.2.14 Extended Hot-Plug Miscellaneous
Address Offset: 32h Size: 16 bits
Default Value: 0000h Attribute: Partial Read/Write
Bits
Description
15:0 reserved (0)