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KMC-40A 486DLC/386DX

ACER, INC.

KMC-40A 486DLC/386DX

Processor

80386DX/CX486DLC

Processor Speed

33/40MHz

Chip Set

ALI

Max. Onboard DRAM

32MB

SRAM Cache

32/64/128/256KB

BIOS

AMI

Dimensions

240mm x 220mm

I/O Options

None

NPU Options

80387/CX83D87/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo switch

J7 pins 1 & 2

Reset switch

J5

Turbo LED

J7 pins 4 & 5

Speaker

J6

Power LED & keylock

J8

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP1

pins 2 & 3 closed

 

Monitor type select monochrome

JP1

pins 1 & 2 closed

Factory configured - do not alter

JP2

pins 2 & 3 closed

RTC type select DS1287

JP3

pins 1 & 2 closed

 

RTC type select 146818

JP3

pins 1 & 2 closed

Factory configured - do not alter

JP7

pins 1 & 2 closed

Factory configured - do not alter

JP8

pins 2 & 3 closed

Note:The locations of JP7 and JP8 are unknown.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

SRAM JUMPER CONFIGURATION

Size

JP5

JP6

32KB

open

pins 2 & 3 closed

64KB

open

pins 1 & 2 closed

128KB

pins 1 & 2, 3 & 4 and 5 & 6 closed

pins 2 & 3 closed

256KB

pins 1 & 2, 3 & 4 and 5 & 6 closed

pins 1 & 2 closed

SRAM CONFIGURATION

Size

Cache SRAM

Location

TAG

32KB

(4) 8K x 8

Bank 0

(1) 8K x 8

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

128KB

(4) 32K x 8

Bank 0

(1) 32K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8