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PTM-1230C

DTK COMPUTER, INC.

PTM-1230C

Processor

80286

Processor Speed

12MHz

Chip Set

VLSI/VTI

Max. Onboard DRAM

1MB

Cache

None

BIOS

DTK

Dimensions

341.6mm x 204.2mm

I/O Options

Parallel port, serial ports (2)

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

External battery

J12

Reset switch

J2

Serial port (COM2)

CN1

Speaker

J3

Serial port (COM1)

CN2

Turbo LED

J4

Parallel port

CN3

Turbo switch

J5

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

DRAM speed select 0 wait states

J6

Closed

 

DRAM speed select 1 wait state

J6

Open

Factory configured - do not alter

J7

Unknown

Factory configured - do not alter

J10

N/A

Monitor type select color

J11

Closed

 

Monitor type select monochrome

J11

Open

BIOS type select 27256

J22

Closed

 

BIOS type select 27128

J22

Open

CMOS memory normal operation

JP1

Closed

 

CMOS memory clear

JP1

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(18) 41256

NONE

640KB

(18) 41256

(18) 4164

1MB

(18) 41256

(18) 41256

DRAM JUMPER CONFIGURATION

Size

J8

J9

512KB

Closed

Closed

640KB

Closed

Open

1MB

Open

Closed

PARALLEL PORT (CN3) CONFIGURATION

Port

J13

J14

J19

LPT1

Closed

Closed

pins 1 & 2 closed

LPT2

Open

Open

pins 2 & 3 closed

Disabled

Open

Closed

N/A

Disabled

Closed

Open

N/A

SERIAL PORT CONFIGURATION

Serial Port 1 (CN2)

J15

J16

Serial Port 2 (CN1)

J17

J18

COM1

Closed

Closed

COM2

Closed

Closed

COM3

Open

Open

COM4

Open

Open

Disabled

Closed

Open

Disabled

Closed

Open

Disabled

Open

Closed

Disabled

Open

Closed