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Intel® 460GX Chipset System Software Developer’s Manual xi
7-4 GART Entry Format for 4 MB Pages..................................................................7-3
7-5 GART SRAM Timings ........................................................................................7-5
Tables
1-1 Intel® 460GX Chipset Components ...................................................................1-2
2-1 Device Mapping on Bus CBN.............................................................................2-2
2-2 Memory-Mapped Register Summary ...............................................................2-45
2-3 I/O Select Register Format...............................................................................2-45
2-4 I/O Window Register Format............................................................................2-46
2-5 (x)APIC EOI Register Format...........................................................................2-46
2-6 Memory-mapped Register Summary ...............................................................2-47
2-7 I/O APIC ID Register Format............................................................................2-49
2-8 I/O (x)APIC Version Register Format ...............................................................2-49
2-9 I/O (x)APIC Arbitration ID Register Format ......................................................2-50
2-10 I/O (x)APIC RTE Format ..................................................................................2-50
4-1 Address Disposition............................................................................................4-8
5-1 General Memory Characteristics........................................................................5-1
5-2 Minimum/Maximum Memory Size per Configuration..........................................5-3
5-3 Required DRAM Parameters..............................................................................5-6
5-4 Scrubbing Time ..................................................................................................5-7
6-1 Error Cases ......................................................................................................6-16
6-2 List of WXB Error Sources Selectively Routable to XBINIT#, SERR_OUT#,
and P(A/B)INTRQ#...........................................................................................6-27
6-3 Supported Error Escalation to XBINIT#............................................................6-27
6-4 Supported Error Escalation to SERR_OUT#....................................................6-28
6-5 Supported Error Escalation to P(A/B)INTRQ# .................................................6-28
7-1 Coherency for AGP/PCI Streams.......................................................................7-8
7-2 Delayed Read Matching Criteria ......................................................................7-11
7-3 Burst Write Combining Modes..........................................................................7-13
7-4 Burst Write Combining Examples with 3 Writes in 1X Transfer Mode .............7-13
7-5 Bandwidth Estimates for Various Request Sizes .............................................7-14
8-1 IHPC Configuration Register Space...................................................................8-2
8-2 IHPC Memor Mapped Register Space .............................................................8-11
9-1 PCI Configuration Registers–Function 0(PCI to LPC/FWH Interface Bridge) ....9-1
9-2 PCI Configuration Registers–Function 1 (IDE Interface)....................................9-3
9-3 PCI Configuration Registers–Function 2 (USB Interface) ..................................9-4
9-4 PCI Configuration Registers–Function 3 (SMBus Controller Interface) .............9-5
10-1 Identify Device Information Used for Determining Drive Capabilities...............10-3
10-2 Identify Device Information Used for Determining Ultra DMA
Drive Capabilities .............................................................................................10-5
10-3 Identify Device Information Used for Determining Multi/Single Word DMA
Drive Capabilities .............................................................................................10-6
10-4 Drive Multi Word DMA/Single Word DMA Capability as a Function
of Cycle Time ...................................................................................................10-7
10-5 Identify Device Information Used for Determining PIO Drive Capabilities........10-8
10-6 Drive PIO Capability as a Function of Cycle Time ...........................................10-8
10-7 IFB Drive Mode Based on DMA/PIO Capabilities ............................................10-9
10-8 IDE Mode/Drive Feature Settings for Optimal DMA/PIO Operation ...............10-10
10-9 DMA/PIO Timing Values Based on PIIX Cable Mode/System Speed............10-11