433 Main board Description
The major components of
433 maniboard are illus
trated and described to
the right and b e l o w .
Please take a minute to
become familiar with the
board design.
1. Chipset ASIC
4 3 3 mainboard is de
signed around a set of
highly integrated UMC
ASIC, which offers opti
mum performance on
PCI and ISA base system
with a cache controller, a
local DRAM controller,
and an integrated Periph
erals controller.
D�-
..
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:: ...
2. System Microprocessor
433 main board accept any member of the 486 family of high perfor
mance 32-bit m icroprocessors in PGA package. The mainboard is
designed to run at a clock speed from 25 to 50MHz on CPU bus clock,
and 25 to 1 OOMHz on CPU core clock.
3. External Cache
433 maniboard features a external cache memory, which complements
the 8KB or 1 6KB internal cache of the 486 fam ily. It support second
ary cache with size of 1 28KB, 256KB, 5 1 2KB, and 1 MB.
User's Manual 7
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