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DTC5250CX

DATA TECHNOLOGY CORPORATION

DTC5250CX

Data bus:

8-bit, ISA

Size:

Full-length, full-height card

Hard drive supported:

Two MFM ST506/412 drives

Floppy drives supported:

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

CONNECTIONS

Function

Location

34-pin control cable connector-floppy drive

J1

34-pin control cable connector-hard drive

J2

20-pin data cable connector - drive 0

J3

20-pin data cable connector - drive 1

J4

34-pin floppy drive cable connector - external

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive enabled

J6/jumper 3

open

 

Floppy drive disabled

J6/jumper 3

closed

Floppy drive B: 96 tracks per inch density enabled

J6/jumper 6

closed

 

Floppy drive B: 48 tracks per inch density enabled

J6/jumper 6

open

Floppy drive A: 96 tracks per inch density enabled

J6/jumper 7

closed

 

Floppy drive A: 48 tracks per inch density enabled

J6/jumper 7

open

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive port address is 3F0-3F7h

SW2/switch 1

off

 

Floppy drive port address is 370-377h

SW2/switch 1

on

BIOS enabled

SW2/switch 3

on

 

BIOS disabled

SW2/switch 3

off

BIOS size 16KB

SW2/switch 4

on

 

BIOS size 8KB

SW2/switch 4

off

DRIVE TYPE SETTINGS - SW1/SWITCHES 1-8

For settings of SW1 see drive type settings table in document C0061

BIOS ADDRESS

Address

SW2/switch 5

SW2/switch 6

SW2/switch 7

SW2/switch 8

C800h

on

off

on

on

 

D800h

on

off

off

on

 

E800h

on

off

on

off

MISCELLANEOUS TECHNICAL NOTES

SW2/switch 2 is not used. If QIT01B1 EPROM is installed, jumper W1 must be closed, jumpers W2 and W3 must be open. The functions of J6/jumpers 1, 2, 4, 5, and 8 are undocumented.