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PTI-255H

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