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EISA 486LXE (MODEL L433S)

ACER, INC.

EISA 486LXE (MODEL L433S)

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

25/33/50(internal)/50/66(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

128MB

SRAM Cache

128/256KB

BIOS

Acer

Dimensions

220mm x 260mm

I/O Options

32-bit VESA card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

CN4/1 - 5

Turbo switch

CN4/15 - 17

Speaker

CN4/7 - 10

Reset switch

CN4/19 & 20

Turbo LED

CN4/12 & 13

32-bit VESA card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

VESA bus wait states select 0

JP8

pins 2 & 3 closed

 

VESA bus wait states select 1

JP8

pins 1 & 2 closed

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

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

CPU SPEED CONFIGURATION FOR CH9001 SYSTEM CLOCK CHIP

CPU Speed

JP9

33/66(internal)MHz

pins 1 & 4 closed

25/50(internal)MHz

pins 3 & 6 closed

40MHz

pins 1 & 2 and 4 & 5 closed

50MHz

pins 2 & 5 closed

SRAM CONFIGURATION

Size

Cache SRAM

Location

Jumpers JP6 & JP7

128KB

(4) 32K x 8

Bank 0

pins 2 & 3 closed

256KB

(8) 32K x 8

Banks 0 & 1

pins 1 & 2 closed