Service manual

8258I N/B Maintenance

• Supports 3 virtual channels for traffic class performance differentiation

• Supports both snooped and non-snooped traffic

• Supports isochronous non-snooped traffic

• Supports legacy snooped isochronous traffic

• Supports the following traffic types to or from Intel 82801GBM

• Peer write traffic between DMI and PCI Express graphics port

• DMI-to-DRAM

• DMI-to-CPU (FSB interrupts or MSIs only)

•CPU-to-DMI

• Messaging in both directions, including Intel Vendor-specific messages

• Supports power management state change messages

• APIC and MSI interrupt messaging support

• Supports SMI, SCI and SERR error indication

• Legacy support for ISA regime protocol (PHOLD/PHOLDA) required for parallel port DMA, floppy drive

and LPC bus masters

MiTac Secret

Confidential Document