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HARDCACHE/ESDI

COMPUADD, INC.

HARDCACHE/ESDI

Data bus: 16-bit, ISA

Size: Full-length, full-height card

Hard drives supported: Two RLL ESDI drives

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

CONNECTIONS

Function

Location

20-pin data cable connector-drive 1

J1

20-pin data cable connector-drive 0

J2

34-pin data cable connector-floppy drive

J3

34-pin control cable connector-hard drive

J4

4-pin connector-drive active LED

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive type is AT-type

W1

pins 1 & 2 closed

 

Floppy drive type is PS/2 type 1.44MB

W1

pins 2 & 3 closed

Floppy Drive Interrupt is IRQ6

W2

pins 1 & 2 closed

 

Floppy Drive Interrupt is IRQ10

W2

pins 2 & 3 closed

Floppy Drive DMA Acknowledge is DACK2

W3

pins 1 & 2 closed

 

Floppy Drive DMA Acknowledge is DACK3

W3

pins 2 & 3 closed

Floppy Drive DMA Request is DREQ2

W4

pins 1 & 2 closed

 

Floppy Drive DMA Request is DREQ3

W4

pins 2 & 3 closed

Hard drive address 1F0-1F7h

W5

open

 

Hard drive address 170-177h

W5

closed

Floppy drive address 3F0-3F7h

W6

open

 

Floppy drive address 370-377h

W6

closed

BIOS enabled

W7

closed

 

BIOS disabled

W7

open

BIOS address C800-C9FFh

W8

open

 

BIOS address CA00-CBFFh

W8

closed

Floppy drive enabled

W9

open

 

Floppy drive disabled

W9

closed

Floppy drive single spindle speed enabled

W10

open

 

Floppy drive dual spindle speed enabled

W10

closed

256KB SIMM's supported

W11

pins 1 & 2 closed

 

1MB SIMM's supported

W11

pins 2 & 3 closed

Block Data Transfer mode enabled

W12

pins 1 & 2 closed

 

IRQ-Paced Data Transfer mode enabled

W12

pins 2 & 3 closed

Factory configured - do not alter

W13

open