TYAN S1837 User Manual page 66

Chapter 3
BIOS Configuration
USB KB/Mouse Legacy Support
Set this option to Enabled to enable support for older keyboards and mouse
devices if the USB Function option is set to Enabled. The settings are Enabled
or Disabled.
Port 64/60 Emulation
Setting this option to Enabled allows a USB keyboard to act like a legacy
keyboard. If this option is not Enabled, USB keyboard lights will not work
under Windows NT. With other operating systems, a USB keyboard will work
normally with this option Disabled. The settings are Enabled or Disabled.
SERR#
Set this option to Enabled to enable the SERR# signal on the bus. The settings
are Enabled or Disabled.
PERR#
Set this option to Enabled to enable the PERR# signal on the bus. The settings
are Enabled or Disabled. The Optimal and Fail-safe default settings are
Disabled.
WSC# Handshake
Set this option to Enabled to enable handshaking for the WSC# signal.
Handshaking is a form of encryption; see the Glossary for more information.
The settings are Enabled or Disabled.
USWC Write Post
This option sets the status of USWC posted writes to I/O. USWC is a type of
memory that is used by VGA devices. The settings are:
e S i t t g n
n E b a d e l U S W C o p t s d e
D s i b a d e l U S W C o p t s d e
BX Master Latency Timer (Clks)
This option specifies the master latency timer (in PCI clocks) for devices in the
computer. The settings are Disabled, 32, 64, 96, 128, 160, 192, or 224.
Multi-Trans Timer (Clks)
This option specifies the multi-trans latency timings (in PCI clocks) for devices
in the computer. The settings are Disabled, 32, 64, 96, 128, 160, 192, or 224.
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