Format of PCI Configuration data for Intel 82378 and 82379 ISA Bridges |
| Offset | Size | Description | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
00h |
64 BYTEs |
header (see #00878) (vendor ID 8086h, device ID 0484h) (revision ID:
|
||||||||||||||||
|
40h |
BYTE |
PCI Control (see #01065) | ||||||||||||||||
|
41h |
BYTE |
PCI Arbiter Control (see #01066) | ||||||||||||||||
|
42h |
BYTE |
PCI Arbiter Priority Control (see #01067) | ||||||||||||||||
|
43h |
BYTE |
(82378ZB) PCI Arbiter Priority Control Extension Register
|
||||||||||||||||
|
44h |
BYTE |
MEMCS# Control (see #01068) | ||||||||||||||||
|
45h |
BYTE |
MEMCS# Bottom of Hole (address bits 23-16) | ||||||||||||||||
|
46h |
BYTE |
MEMCS# Top of Hole (address bits 23-16) | ||||||||||||||||
|
47h |
BYTE |
MEMCS# Top of Memory (address bits 28-21 == size in 2M increments, less 1) | ||||||||||||||||
|
48h |
BYTE |
ISA Address Decoder Control (see #01069) | ||||||||||||||||
|
49h |
BYTE |
ISA Address Decoder ROM Block Enable (see #01070) | ||||||||||||||||
|
4Ah |
BYTE |
ISA Address Decoder Bottom of Hole (address bits 23-16) | ||||||||||||||||
|
4Bh |
BYTE |
ISA Address Decoder Top of Hole (address bits 23-16) | ||||||||||||||||
|
4Ch |
BYTE |
ISA Controller Recovery Time (see #01087) | ||||||||||||||||
|
4Dh |
BYTE |
ISA Clock Divisor (see #01071) | ||||||||||||||||
|
4Eh |
BYTE |
Utility Bus Chip Select Enable A (see #01072) | ||||||||||||||||
|
4Fh |
BYTE |
Utility Bus Chip Select Enable B (see #01073) | ||||||||||||||||
|
50h |
4 BYTEs |
reserved | ||||||||||||||||
|
54h |
BYTE |
MEMCS# Attribute Register #1 (see #01074) attributes for 16K blocks from C0000h-CFFFFh | ||||||||||||||||
|
55h |
BYTE |
MEMCS# Attribute Register #2 (see #01074) attributes for 16K blocks from D0000h-DFFFFh | ||||||||||||||||
|
56h |
BYTE |
MEMCS# Attribute Register #3 (see #01074) attributes for 16K blocks from E0000h-EFFFFh | ||||||||||||||||
|
57h |
BYTE |
(82378) Scatter/Gather Relocation Base Adress (see #01075) (82379AB) reserved |
||||||||||||||||
|
58h |
8 BYTEs |
reserved | ||||||||||||||||
|
60h |
BYTE |
(82378ZB) IRQ0# Route Control (see #01076) | ||||||||||||||||
|
61h |
BYTE |
(82378ZB) IRQ1# Route Control (see #01076) | ||||||||||||||||
|
62h |
BYTE |
(82378ZB) IRQ2# Route Control (see #01076) | ||||||||||||||||
|
63h |
BYTE |
(82378ZB) IRQ3# Route Control (see #01076) | ||||||||||||||||
|
64h |
12 BYTEs |
reserved | ||||||||||||||||
|
70h |
BYTE |
(82378) reserved (82379AB, write-only) PIC/APIC Configuration Control (see #01077) |
||||||||||||||||
|
71h |
BYTE |
(82378) reserved (82379AB, write-only) APIC Base Address Relocation (see #01078,MEM FEC00000h) |
||||||||||||||||
|
72h |
14 BYTEs |
reserved | ||||||||||||||||
|
80h |
WORD |
BIOS timer base address
|
||||||||||||||||
|
82h |
30 BYTEs |
unused??? | ||||||||||||||||
|
A0h |
BYTE |
SMI Control (see #01079) | ||||||||||||||||
|
A1h |
BYTE |
reserved | ||||||||||||||||
|
A2h |
WORD |
SMI Enable (see #01080) | ||||||||||||||||
|
A4h |
DWORD |
System Event Enable (SEE) (see #01081) | ||||||||||||||||
|
A8h |
BYTE |
Fast-Off Timer (in minutes) | ||||||||||||||||
|
A9h |
BYTE |
reserved | ||||||||||||||||
|
AAh |
WORD |
active SMI Requests (see #01082) | ||||||||||||||||
|
ACh |
BYTE |
(82378ZB) Clock Throttle STPCLK# Low Timer duration of STPCLK# low period in 32 microsecond units |
||||||||||||||||
|
ADh |
BYTE |
reserved | ||||||||||||||||
|
AEh |
BYTE |
(82378ZB) Clock Throttle STPCLK# High Timer duration of STPCLK# high period in 32 microsecond units |
||||||||||||||||
|
AFh |
81 BYTEs |
reserved |
|
See Also: |