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82845G Datasheet, PDF (5/193 Pages) Intel Corporation – Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) | |||
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3.5.3
3.5.4
3.5.2.9 HDR1âHeader Type Register (Device 1).........................83
3.5.2.10 PBUSN1âPrimary Bus Number Register (Device 1) .......83
3.5.2.11 SBUSN1âSecondary Bus Number Register (Device 1)...84
3.5.2.12 SUBUSN1âSubordinate Bus Number Register (Device 1)..
84
3.5.2.13 SMLT1âSecondary Bus Master Latency Timer Register
(Device 1).............................................................................84
3.5.2.14 IOBASE1âI/O Base Address Register (Device 1)............85
3.5.2.15 IOLIMIT1âI/O Limit Address Register (Device 1).............85
3.5.2.16 SSTS1âSecondary Status Register (Device 1) ...............86
3.5.2.17 MBASE1âMemory Base Address Register (Device 1) ....87
3.5.2.18 MLIMIT1âMemory Limit Address Register (Device 1) .....88
3.5.2.19 PMBASE1âPrefetchable Memory Base Address Register
(Device 1).............................................................................89
3.5.2.20 PMLIMIT1âPrefetchable Memory Limit Address Register
(Device 1).............................................................................89
3.5.2.21 BCTRL1âBridge Control Register (Device 1) ..................90
3.5.2.22 ERRCMD1âError Command Register (Device 1)............91
Integrated Graphics Device Registers (Device 2) .............................92
3.5.3.1 VID2âVendor Identification Register (Device 2) ..............93
3.5.3.2 DID2âDevice Identification Register (Device 2)...............93
3.5.3.3 PCICMD2âPCI Command Register (Device 2) ...............94
3.5.3.4 PCISTS2âPCI Status Register (Device 2) .......................95
3.5.3.5 RID2âRevision Identification Register (Device 2) ............95
3.5.3.6 CCâClass Code Register (Device 2) ...............................96
3.5.3.7 CLSâCache Line Size Register (Device 2) ......................96
3.5.3.8 MLT2âMaster Latency Timer Register (Device 2) ...........96
3.5.3.9 HDR2âHeader Type Register (Device 2).........................97
3.5.3.10 GMADR âGraphics Memory Range Address Register
(Device 2).............................................................................97
3.5.3.11 MMADRâMemory Mapped Range Address Register
(Device 2).............................................................................98
3.5.3.12 SVID2âSubsystem Vendor Identification Register
(Device 2).............................................................................98
3.5.3.13 SID2âSubsystem Identification Register (Device 2) ........98
3.5.3.14 ROMADRâVideo BIOS ROM Base Address Registers
(Device 2).............................................................................99
3.5.3.15 CAPPOINTâCapabilities Pointer Register (Device 2)......99
3.5.3.16 INTRLINEâInterrupt Line Register (Device 2)..................99
3.5.3.17 INTRPINâInterrupt Pin Register (Device 2) ...................100
3.5.3.18 MINGNTâMinimum Grant Register (Device 2) ..............100
3.5.3.19 MAXLATâMaximum Latency Register (Device 2)..........100
3.5.3.20 PMCAPIDâPower Management Capabilities ID Register
(Device 2)...........................................................................100
3.5.3.21 PMCAPâPower Management Capabilities Register
(Device 2)...........................................................................101
3.5.3.22 PMCSâPower Management Control/Status Register
(Device 2)...........................................................................101
Device 6 Registers ..........................................................................102
3.5.4.1 DWTCâDRAM Write Throttling Control Register
(Device 6)...........................................................................102
3.5.4.2 DRTCâDRAM Read Throttling Control Register
(Device 6)...........................................................................103
4
Functional Description ...................................................................................105
4.1 Processor System Bus.................................................................................105
Intel® 82845G/82845GL/82845GV GMCH Datasheet
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