DATA TECHNOLOGY CORPORATION

DTC540DB

Data Bus

SASI

Card Size

146 x 203mm

Hard Drives Supported

Two ST506/412-MFM devices

One QIC-02 device

Floppy Drives Supported

Four 360KB drives

CONNECTIONS

Function

Label

Function

Label

50-pin SASI connector - to SASI controller

J1

34-pin cable connector - floppy drive

J7

34-pin hard drive control cable

J2

50-pin QIC-02 connector - internal

J8

20-pin hard drive data cable

J3

4-pin DC power in

J10

20-pin hard drive data cable

J4

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

»

SASI bus terminated

T1

Installed

 

SASI bus not terminated

T1

Not installed

»

SASI bus parity enabled

W1

Pins 1 & 2 closed

 

SASI bus parity disabled

W1

Pins 2 & 3 closed

»

QIC-02 parity enabled

W2

Pins 1 & 2 closed

 

QIC-02 parity disabled

W2

Pins 2 & 3 closed

»

Logical Unit Number 0 is assigned to hard drive

W5

Open

 

Logical Unit Number 0 is assigned to floppy drive

W5

Closed

»

Logical Unit Number 1 is assigned to floppy drive

W6

Closed

 

Logical Unit Number 1 is assigned to hard drive

W6

Open

»

Factory configured - do not alter

W7

Closed

»

Logical Unit Number 3 is assigned to QIC-02 tape drive

W8

Open

 

Logical Unit Number 3 is assigned to floppy drive

W8

Closed

»

Motor On signal normal

W14

Open

 

Motor On signal forced high

W14

Closed

»

Floppy drive not always considered ready

W15

Open

 

Floppy drive always considered ready

W15

Closed

»

Factory configured - do not alter

W31

Open

»

Factory configured - do not alter

W32

Pins 1 & 2 closed

SASI BUS ADDRESS SELECTION

Setting

W0/A

W0/B

W0/C

W0/D

W0/E

W0/F

W0/G

W0/H

»

0

Closed

Open

Open

Open

Open

Open

Open

Open

 

1

Open

Closed

Open

Open

Open

Open

Open

Open

 

2

Open

Open

Closed

Open

Open

Open

Open

Open

 

3

Open

Open

Open

Closed

Open

Open

Open

Open

 

4

Open

Open

Open

Open

Closed

Open

Open

Open

 

5

Open

Open

Open

Open

Open

Closed

Open

Open

 

6

Open

Open

Open

Open

Open

Open

Closed

Open

 

7

Open

Open

Open

Open

Open

Open

Open

Closed

SECTOR SIZE SELECTION

Setting

W3

W4

 

128 bytes

Open

Open

»

256 bytes

Closed

Open

 

512 bytes

Open

Closed

 

1024 bytes

Closed

Closed

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