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PEM-2531D

DTK COMPUTER, INC.

PEM-2531D

Processor

80386DX

Processor Speed

25MHz

Chip Set

DTK

Max. Onboard DRAM

16MB (8MB on external memory card)

Cache

None

BIOS

DTK

Dimensions

333mm x 222mm

I/O Options

32-bit external memory card slot (PEI-307)

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo switch

J4

Speaker

J2

Reset switch

J5

Turbo LED

J3

32-bit external memory card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

CPU speed select fast

J4

Open

 

CPU speed select slow

J4

pins 1 & 2 closed

 

CPU speed select switchable from keyboard

J4

pins 2 & 3 closed

NPU disabled

W1

pins 2 & 3 closed

 

NPU enabled

W1

pins 1 & 2 closed

Monitor type select monochrome

W2

pins 1 & 2 closed

 

Monitor type select color

W2

pins 2 & 3 closed

Bus speed select CPU/2

SW1/7

Off

 

Bus speed select CPU/4

SW1/7

On

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

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

SW1/8

1MB

Off

On

On

On

Off

2MB

On

Off

On

On

On

4MB

Off

Off

Off

Off

Off

5MB

Off

On

Off

On

Off

8MB

On

On

On

Off

On

DRAM WAIT STATE CONFIGURATION

Wait state

Read state

SW1/5

SW1/6

1

3

Off

On

1

2

On

Off

2

3

On

On