User`s manual

1-3 Features

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Intel 80286-12 microprocessor with 80287 coprocessor op-

tional

Use of CHIP’s PC/AT-compatible chip set

Switchable between 6MHz Normal mode and 12MHz Turbo

mode by either a software switch or a hardware switch

Onboard battery backup for the CMOS configuration table

and a real-time clock

RAM subsystem of 512KB, 640KB, 1 MB, 1.5MB, 2MB,

3MB, 4MB and 5MB

Eight expansion slots -five 16 bit slots and three 8 bit slots

Sixteen-level interrupt

Seven-channel DMA for disk and special I/O

64KB legal BIOS

Four-layer mainboard

LIM 4.0 EMS support

Shadow RAM support

Choice of either 44256 DIP or 256k/l M SIMM DRAM

modules

Page/Interleaved DRAM access method support

Chapter 1: System Overview