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PTM-1261C/1661C

DTK COMPUTER, INC.

PTM-1261C/1661C

Processor

80286

Processor Speed

12/16MHz

Chip Set

C & T

Max. Onboard DRAM

5MB

Cache

None

BIOS

DTK

Dimensions

333mm x 222mm

I/O Options

Floppy drive interface, game port, IDE interface, parallel port, PS/2 mouse interface, serial ports (2)

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

External battery

J9

Turbo LED

J2

Serial port 2

J10

Reset switch

J3

Serial port 1

J11

Turbo switch

J4

Parallel port

J12

IDE interface

J5

PS/2 mouse interface

J13

Floppy drive interface

J6

IDE interface LED

W12

Game port

J7

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

IDE type select new standard

W11

pins 2 & 3 closed

 

IDE type select original standard (i.e., CP-342)

W11

pins 1 & 2 closed

Floppy drive interface (J6) enabled

W14

Closed

 

Floppy drive interface (J6) disabled

W14

Open

IDE interface enabled

W21

Closed

 

IDE interface disabled

W21

Open

Game port enabled

W22

Closed

 

Game port disabled

W22

Open

Monitor type select monochrome

W23

Open

 

Monitor type select color

W23

Closed

Battery select internal

W24

pins 2 & 3 closed

 

Battery select external

W24

pins 1 & 2 closed

Power good signal detect from power supply

W25

pins 2 & 3 closed

 

Power good signal detect from board

W25

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

P-0

Bank 1

P-1

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

640KB

(4) 44256

(2) 41256

(2) 64K x 9

NONE

NONE

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

1.5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

NONE

2MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

3MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9

5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

(2) 1M x 9

DRAM JUMPER CONFIGURATION

Size

W1

W2

W3

W4

W5

W6

512KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

640KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1MB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1.5MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2MB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

3MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

4MB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

5MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Notes:Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION

Setting

W13

W19

W20

LPT1

pins 1 & 2 closed

Closed

Closed

LPT2

pins 2 & 3 closed

Open

Open

Disabled

N/A

Open

Closed

Disabled

N/A

Closed

Open

SERIAL PORT 1 CONFIGURATION

Setting

W13

W15

W16

COM1

pins 1 & 2 closed

Closed

Closed

COM3

pins 2 & 3 closed

Open

Open

Disabled

N/A

Open

Closed

Disabled

N/A

Closed

Open

SERIAL PORT 2 CONFIGURATION

Setting

W13

W17

W18

COM2

pins 1 & 2 closed

Closed

Closed

COM4

pins 2 & 3 closed

Open

Open

Disabled

N/A

Open

Closed

Disabled

N/A

Closed

Open