DTK COMPUTER, INC.

PTI-255H

Card Type

Hard drive controller card

Hard Drives supported

Four EIDE drives

Floppy drives supported

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

Data Bus

32-bit VESA Local Bus

Card Size

Full-length, half-height card

CONNECTIONS

Function

Location

Function

Location

4-pin connector - drive active LED

J1

16-pin game port

J5

40-pin primary IDE(AT) connector

J2

10-pin serial port 2 - internal

J6

40-pin secondary IDE(AT) connector

J3

10-pin serial port 2 - internal

J7

34-pin cable connector - floppy drive

J4

25-pin parallel port - external

J8

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

IDE(0) interface enabled

W8

Pins 2 & 3 closed

 

IDE(0) interface disabled

W8

Pins 1 & 2 closed

»

IDE(1) interface enabled

W9

Pins 2 & 3 closed

 

IDE(1) interface disabled

W9

Pins 1 & 2 closed

»

Floppy drive interface enabled

W22

Open

 

Floppy drive interface disabled

W22

Closed

»

Game port enable

W24

open

 

Game port disable

W24

closed

»

Serial port 1 enabled

W27

Open

 

Serial port 1 disabled

W27

Closed

»

Parallel port enabled

W28

Open

 

Parallel port disabled

W28

Closed

»

Serial port 2 enabled

W30

Open

 

Serial port 2 disabled

W30

Closed

PARALLEL PORT ADDRESS SELECTION

Setting

Label

Position

»

LPT1 (378h)

W25

Open

 

LPT2 (278h)

W25

Closed

SERIAL PORT 1 ADDRESS SELECTION

Setting

Label

Position

»

COM1 (3F8h)

W26

Open

 

COM3 (3E8h)

W26

Closed

SERIAL PORT 2 ADDRESS SELECTION

Setting

Label

Position

»

COM2 (2F8h)

W29

Open

 

COM4 (2E8h)

W29

Closed

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

W36

W37

W38

 

IRQ3

Open

Closed

Open

»

IRQ4

Closed

Open

Open

 

IRQ5

Open

Open

Closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

W39

W40

W41

»

IRQ3

Closed

Open

Open

 

IRQ4

Open

Closed

Open

 

IRQ5

Open

Open

Closed

PARALLEL PORT INTERRUPT SELECTION

IRQ

W42

W43

»

IRQ7

Closed

Open

 

IRQ5

Open

Closed

PARALLEL PORT MODE SELECTION

Setting

Label

Position

»

Uni-directional

W23

Closed

 

Bi-Directional (EPP/ECP)

W23

Open

I/O CHANNEL READY

I/O Channel ready

Label

Position

ISA

W6

Pins 1 & 2 closed

759A

W6

Pins 2 & 3 closed

SPEED SELECTION

Speed

Label

Position

 

33MHz

W10

Pins 1 & 2 closed

»

50MHz

W10

Pins 2 & 3 closed

IDE TIMING SELECTION

IDE Timing

W11

W12

 

240ns (mode 3)

Pins 1 & 2 closed

Pins 1 & 2 closed

 

400ns (mode 2)

Pins 1 & 2 closed

Pins 2 & 3 closed

 

500ns (mode 1)

Pins 2 & 3 closed

Pins 1 & 2 closed

»

600ns (mode 0)

Pins 2 & 3 closed

Pins 2 & 3 closed

FLOPPY DISK DRIVE ADDRESS SELECTION

Address

Label

Position

»

3F0h

W21

Open

 

370h

W21

Closed