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3.4 Chipset Setup
This setup page is used to specify advanced features available through the chipset. The default
settings have been chosen carefully for the most operating conditions.
DO NOT change the value of any field in this setup page unless you fully understand what it
means.
USB Function
Set this option to Enabled to enable USB (Universal Serial Bus) support. The settings are Enabled
or Disabled.
USB Keyboard/Mouse Legacy Support
Set this option to Enabled to enable support for older USB keyboards and mouse devices if the
USB Function option is set to Enabled. The settings are Enabled or Disabled.
DRAM Timing Latency
This option specifies the latency for the DRAM system memory signals. The settings are Auto
(AMIBIOS automatically determines the optimal delay) or Manual.
Gated Clock
This bit is used to control the internal clock regarding the Memory Data Bus. When this bit is
“Enabled,” the clock never stops. When this bit is “Disabled,” M1541 will automatically stop the
internal DRAM controller when there is no Memory Data Bus activity.
