MSI MS-6135 User Manual page 51

USB Passive Release
During Enabled, this will allow the PIIX4E
release(look at PIIX4E
tion or data for USB transaction. During Disabled, PIIX4E
accesses for USB without using passive release.
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PIIX4E Passive Release
The PIIX4E
mode, which will now violate the spirit of the PCI specification. The system
provides a programmable passive release mechanism to meet the required
master latencies. During Enabled, ISA masters may see long delays in
accessing PCI memory, including the main DRAM array. The ISA GAT mode
is also not supported during enable. ISA masters must honor IOCHRDY.
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PIIX4E Delayed Transaction
During Enabled, the PIIX4E
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when the PIIX4E
to PCI is immediately retrived due to any pending PCI to DRAM cycle.
During Disabled, a read cycle from Host to PCI is waited until time-out due
to any pending PCI to DRAM cycle.
CLKGen Spread Spectrum
This item allows you to select the clock generator Spread Spectrum
function. The default setting is enabled. This item should always be set to
disabled, if you overclock the processor.
USB Function
Set this option to Enabled or Disabled the on-chip USB controller.
The Optional and Fail-Safe default settings are Disabled.
USB Keybd/Mouse Legacy Support
Set this option to Enabled or Disabled USB keyboard/mouse.
The Optional and Fail-Safe default settings are Disabled.
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Passive Release) while transferring control informa-
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ISA bridge support GAT (Guaranteed Access Time)
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is the target of a PCI transaction. A read cycle from Host
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to use passive
delay transaction mechanism is enabled
3-14
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will perform PCI