Octek HAWK 486, Руководство пользователя

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SYSTEM BIOS
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A-34
AT BUS CLOCK
Bus clock is used by pripherals on the motherboard and slot,
such display and DMA Bus clock is generated from CPU clock-in and the
speed of Bus clock is shown below.
CPU Speed (MHz)
AT CLK 33 25 20 16
CLKIN/4 * 8.4 6.3 5.0 4.0
CLKIN/3 11.1 * 8.3 6.6 5.3
CLKIN/2.5 12.5 10.0 * 8 6.4
CLKIN/2 16.7 12.5 10 * 8
The system performance can be improved by selecting a higher
Bus clock speed. To be compatible with general add-on cards, the bus
clock must be 8.4MHz or less. There are many old version add-on cards
that can only run at the slow speed. So, be careful when you want to set
to higher speed.