4-20 NEC Drivers and Utilities An ISA card connects to a PCI Graphics card via theVESA compatible feature connector. The ISA card connects to a color monitor. The card uses the RAMDAC on the PCI card. The palette snooping feature is broken on the PCI card.Latency Timer (PCI Clock)The Latency Timer (PCI CLOCK) field controls the lengthof time an agent on the PCI bus can hold the bus whenanother agent has requested the bus. Value choices rangebetween 0 and 256, the default value is 66.In general this should not be changed. If there are latencysensitive cards in the system (such as audio cards and/ornetwork cards with small buffers) this can be set to a lowervalue to reduce latency.If there are no latency sensitive cards in the system, but I/Ointensive applications are being run, this can be increased toslightly improved performance.Memory Error DetectionMemory Error Detection sets the type of error detectionor correction. This field will appear when either ECC orParity SIMMs are detected. Parity and ECC (36-bit)SIMMs may be configured to run as either one. The defaultis “Disabled.” The following choices are available. Disabled (default) Parity ECC
