...because we can't all be on the bleeding edge...





425UXL/433UXL/425UCL/433UCL

CHAINTECH COMPUTER COMPANY, LTD.

425UXL/433UXL/425UCL/433UCL

Processor

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

Processor Speed

25/33/40/50(internal)/66(internal)MHz

Chip Set

USAI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 220mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J2

External battery

J7

Turbo switch

J4

Speaker

J100

Turbo LED

J5

32-bit VESA local bus slots

SL1 & SL2

Reset switch

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Turbo enabled

J4

Closed

 

Turbo disabled

J4

Open

Factory configured - do not alter

JMP3

Open

Factory configured - do not alter

JMP4

Open

Factory configured - do not alter

JMP5

Open

Factory configured - do not alter

JMP7

Open

Factory configured - do not alter

JMP10

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

1MB

NONE

(4) 256K x 9

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

4MB

NONE

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

16MB

NONE

(4) 4M x 9

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JMP1

JMP8

64KB

pins 1 & 2, 4 & 5, 7 & 8 closed

pins 1 & 2, 4 & 5 closed

128KB

pins 2 & 3, 4 & 5, 8 & 9 closed

pins 2 & 3, 4 & 5 closed

256KB

pins 2 & 3, 5 & 6, 8 & 9 closed

pins 2 & 3, 5 & 6 closed

CPU TYPE CONFIGURATION

Type

JMP2

80486SX

pins 1 & 2 closed

ODP486SX

pins 2 & 3 closed

80487SX

pins 2 & 3 closed

80486DX

pins 2 & 3 closed

80486DX2

pins 2 & 3 closed

VESA SPEED CONFIGURATION

Speed

JMP6

33MHz

pins 1 & 4, 3 & 6 closed

40MHz

pins 1 & 4, 2 & 5 closed

50MHz

pins 1 & 4 closed