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2-1 PEM-3301 Motherboard
If your motherboard is the PEM-3301, the layout of your board will be
as pictured on the next page.
The PEM-3301 motherboard uses a cache memory subsystem provid-
ing a small amount of fast memory (SRAM) and a large amount of slow
memory (DRAM). This system is configured to so that all system
memory is fast memory and is fast enough to complete bus cycles with
no wait states. The cache memory provides high performance with no
wait states. The cache memory provides high performance with a cost
approaching that of DRAM.
The motherboard contains an Intel
coprocessor socket, BIOS chips and expansion slots. The figure on the
next page will familiarize you with the layout of the PEM-3301 Cache-
386 33MHz Mainboard.
Restrictions
Before installing the PEM-3301, we strongly recommend that you
follow the restrictions mentioned below:
Access Time:
2
Chapter 2: Setting Up Your System
27256 EPROM (BIOS) with 150ns access time
l
9 1 MbitX9 SIMM DRAM with 100ns access time
256KbitX9 SIMM DRAM with 80ns access time
l
9 16Kbit X 4 DIP Cache RAM (SRAM) with Data: 25ns, TAG:
15ns
. All the SIMM RAM modules must have leads
®
80386 processor, a 80387 math
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