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CNT-HCR CONTROLLER

CORE INTERNATIONAL, INC.

CNT-HCR CONTROLLER

Data bus: 16-bit, ISA

Size: Full-length, full-height card

Hard drives supported: Two MFM ST506/ST412 drives

Floppy drives supported: Two 360KB, 720KB, 1.2MB, 1.44MB drives

Sector interleave: 1:1

Maximum heads/cyl.: 16 heads and 2048 cylinders

CONNECTIONS

Function

Location

34-pin control cable connector-hard drive

CN2

20-pin data cable connector-drive 0

CN3

20-pin data cable connector-drive 1

CN4

4-pin connector-drive active LED

CN5

CONTROLLER POSITIONING

Select

JP18

JP19

First

open

open

 

Second*

open

closed

 

Third*

closed

open

 

Fourth*

closed

closed

Note:Up to four HCR controllers may be installed in a system

*The BIOS must be disabled on all but the first HCR controller

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Sector size is 512 Bytes (Other sizes not supported)

JP10 and JP11

open

Floppy drive enabled

JP14

open

 

Floppy drive disabled

JP14

closed

BIOS address is C8000h

(Controller initializes after POST)

JP15

open

 

BIOS address is CA000h

(Controller initializes during POST)

JP15

closed

BIOS enabled

JP16

open

 

BIOS disabled

JP16

closed

I/O Port address is 320h

JP17

open

 

I/O Port address is 1A0h

JP17

closed

DRIVE CONFIGURATION JUMPERS

 

Drv. 0

Drv. 1

 

JP7

JP8

JP9

JP4

JP5

JP6

HC Series

open

closed

open

open

closed

open

AT Plus

open

open

open

open

open

open

OPTIMA

open

open

open

open

open

open

DRIVE CONFIGURATION

Model

Hds

Cyls

JP20

JP21

JP22

JP23

HC Series

ESDI

closed

closed

closed

closed

ATplus 40MB

5

924

open

closed

open

open

ATplus 43MB

5

988

closed

open

open

closed

ATplus 44MB

7

733

open

closed

closed

open

ATplus 72MB

9

924

open

closed

open

closed

ATplus 80MB

9

1072

closed

open

open

open

OPTIMA 40MB

5

963

closed

open

closed

closed

OPTIMA 44MB

7

733

open

closed

closed

open

OPTIMA 70MB

9

918

closed

open

closed

open

OPTIMA 80MB

9

1072

closed

open

open

open

Note:If an HC Series drive is being used with an ATplus or OPTIMA drive, the jumpers must be set for the latter and modifications to the data cable are required. If two ATplus or OPTIMA drives are used, they must be the same type.)