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HCWD27X

CMS ENHANCEMENTS, INC.

HCWD27X

Data bus:

8-bit ISA

Size:

Half length, full-height card

Hard drive supported:

Two RLL ST506/412 drives

Floppy drives supported:

None

CONNECTIONS

Function

Location

34-pin data cable connector - hard drive

J1

20-pin data cable connector - drive 0

J2

20-pin data cable connector - drive 1

J3

External power connector

J4

4-pin connector - drive active LED

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Interrupt select IRQ5

W27

open

 

Interrupt select IRQ2

W27

closed

AT compatibility enabled

W28

closed

 

XT compatibility enabled

W28

open

ADDRESS SELECT

I/O Address

Base Memory Address

W21

W22

320h

C8000h

open

open

 

324h

CA000h

closed

open

 

328h

CC000h

open

closed

 

32Ch

CE000h

closed

closed

PRE-SELECTED DRIVE CONFIGURATION

     

Drive 0

Drive 1

 

Capacity

Heads

Cylinders

W17

W18

W19

W20

32MB

4

615

open

open

open

open

 

65MB

6

820

closed

closed

closed

closed

 

42MB

4

782

open

closed

open

closed

 

21MB

2

782

closed

open

closed

open

TRANSLATION

Setting

Dynamic

Sectors

W25

W26

Disabled

Yes

26

open

closed

 

Enabled

No

17

closed

open