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DTC520DB

DATA TECHNOLOGY CORPORATION

DTC520DB

Data Bus

SASI

Card Size

146 x 203mm

Hard Drives Supported

Two ST506/412-MFM devices

Floppy Drives Supported

Four 360KB drives

CONNECTIONS

Function

Label

Function

Label

50-pin SASI connector - to SASI controller

J1

20-pin hard drive data cable

J4

34-pin hard drive control cable

J2

34-pin cable connector - floppy drive

J7

20-pin hard drive data cable

J3

4-pin DC power in

J10

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

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

Factory configured - do not alter

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