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MB-4F2

JETPRO INFOTECH COMPANY, LTD.

MB-4F2

Processor

80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

FOREX

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI/AWARD

Dimensions

220.2mm x 250.2mm

I/O Options

32-bit local bus card slot

NPU Options

80387

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo switch

JP15

Reset switch

JP8

Turbo LED

JP16

Power LED & keylock

JP9

32-bit local bus card

S1

Speaker

JP10

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal (internal battery)

JP2

pins 1 and 2 closed

 

CMOS memory normal (external battery)

JP2

connected

 

CMOS memory clear

JP2

open

Factory configured - do not alter

JP5

closed

Factory configured - do not alter

JP6

open

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

CPU TYPE CONFIGURATION

CPU

JP12

JP13

JP30

W1B

W1C-K

80486DX2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

80486DX

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

80487SX

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

80486SX

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

CX486DLC

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

80386DX

N/A

N/A

N/A

pins 2 & 3

pins 2 & 3

Note:Pins designated should be in the closed position.

CACHE CONFIGURATION

Size

Cache CACHE

Location

TAG(0)

TAG(1)

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

NONE

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

NONE

256KB

(8) 32K x 8

Banks 0 & 1

(1) 8K x 8

(1) 8K x 8

CACHE JUMPER CONFIGURATION

Size

JP8A

JP8B

JP8C

JP8E

JP8F

64KB

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 1 & 2

128KB

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

256KB

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

Note:Pins designated should be in the closed position.