82830MP Datasheet, PDF (87/159 Pages) Intel Corporation – Intel 830MP Chipset: 82830MP Graphics and Memory Controller Hub (GMCH-M)

Intel^® 830MP Chipset
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4.5.2.4
PCISTS1 - PCI-PCI Status Register - Device #1
Address Offset:
Default Value:
Access:
Size:
06-07h
0020h
Read Only, Read/Write Clear
16 bits
PCISTS1 is a 16-bit status register that reports the occurrence of error conditions associated with
primary side of the “virtual” PCI-PCI bridge embedded within the GMCH-M. Since this device does not
physically reside on PCI0 it reports the optimum operating conditions so that it does not restrict the
capability of PCI0.
Bit
Descriptions
15
Detected Parity Error (DPE1): Not Applicable - hardwired to “0”.
14
Signaled System Error (SSE1). This bit is set to 1 when GMCH-M Device #1 generates an SERR
message over Hub Interface for any enabled Device #1 error condition. Device #1 error conditions are
enabled in the PCICMD1 and BCTRL registers. Device #1 error flags are read/reset from the SSTS
register. Software clears this bit by writing a 1 to it.
Default Value=0.
13
Received Master Abort Status (RMAS1): Not Applicable - hardwired to “0”.
12
Received Target Abort Status (RTAS1): Not Applicable - hardwired to “0”.
11
Signaled Target Abort Status (STAS1): Not Applicable - hardwired to “0”.
10:9 DEVSEL# Timing (DEVT1): Not Applicable - hardwired to “00”.
8
Data Parity Detected (DPD1): Not Applicable - hardwired to “0”.
7
Fast Back-to-Back (FB2B1): Not Applicable - hardwired to “0”.
6
Reserved.
5
66/60 MHz Capability: Not Applicable - Hardwired to “1”.
4:0 Reserved.
4.5.2.5
RID1 - Revision Identification Register - Device #1
Address Offset:
Default Value:
Access:
Size:
08h
00h
Read Only
8 bits
This register contains the revision number of the GMCH-M device #1. These bits are read only and
writes to this register have no effect. For the A-0 Stepping, this value is 00h.
Bit Description
7:0 Revision Identification Number. This is an 8-bit value that indicates the revision identification number for
the GMCH-M device #1. A-0 Stepping – RID is 00h.
Default Value=0000/0000.
298338-001
Datasheet
87