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





MB 1433/1450AEA-P

BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB 1433/1450AEA-P

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

VLSI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

230mm x 218mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Turbo switch

J5

Power LED & keylock

J2

5v DC ground

J6

Turbo LED

J3

External battery

JP8

Reset switch

J4

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP4

pins 2 & 3 closed

Tag RAM size select 7- bit

JP6

pins 1 & 2 closed

 

Tag RAM size select 8- bit

JP6

pins 2 & 3 closed

Battery type select RTC 146818

JP11

Open

 

Battery type select Dallas 1287

JP11

Closed

Monitor type select monochrome

JP14

pins 1 & 2 closed

 

Monitor type select color

JP14

pins 2 & 3 closed

CMOS memory normal operation

JP16

pins 2 & 3 closed

 

CMOS memory clear

JP16

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) 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

JP12

JP19

64KB

Open

pins 1 & 2 closed

128KB

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

256KB

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

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP13

JP20

80486SX

Open

pins 1 & 2 closed

80487SX

pins 1 & 2 closed

pins 2 & 3 closed

80486DX/DX2

pins 2 & 3 closed

pins 2 & 3 closed

Overdrive

pins 1 & 2 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP5

JP10

80486DX-50

pins 1 & 2 closed

Closed

All other CPU speeds

pins 2 & 3 closed

Open