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PM2011/95 - EISA

DISTRIBUTED PROCESSING TECHNOLOGY

PM2011/95 - EISA

Card Type

Hard drive controller

Maximum Onboard Memory

16.5MB

Hard Drives supported

Up to 7 SCSI devices

Floppy drives supported

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

Data Bus

EISA

Card Size

Full-length, full-height

CONNECTIONS

Function

Location

Function

Location

50-pin SCSI connector - internal

CN1

Memory module connector

CN7

34-pin cable connector - floppy drive

CN2

Disk mirroring module connector

CN8

50-pin SCSI connector - external

CN3

Disk mirroring module connector

CN9

Cache module connector

CN4

Memory expansion board cable connector

CN10

Cache module connector

CN5

Drive active LED

CN11

Memory module connector

CN6

   

Note:Exact size and orientation of CN4-CN11 is unidentified.

USER CONFIGURABLE SETTINGS

Function

Label

Position

Address lines LA17-19 and SA17-19 are driven

Y19

Closed

 

Only address lines LA17-19 are driven

Y19

Open

Floppy drive interface enabled

Y20

Open

 

Floppy drive interface disabled

Y20

Closed

EPROM size 256KB enabled

Y23

Pins 2 & 3 closed

 

EPROM size 512KB enabled

Y23

Pins 1 & 2 closed

Bus mastering enabled

Y24

Open

 

Bus mastering disabled

Y24

Closed

Bus master DMA speed 4MB/sec enabled

Y27

Closed

 

Bus master DMA speed 5MB/sec enabled

Y27

Open

Floppy drive interface 3F0h address enabled

Y34

Open

 

Floppy drive interface 370h address enabled

Y34

Closed

Factory configured - do not alter

Y38

Unidentified

SCSI ID SELECTION

SCSI ID

Y18

Y25

Y26

 

0

Closed

Closed

Closed

 

1

Closed

Open

Closed

 

2

Open

Closed

Closed

 

3

Open

Open

Closed

 

4

Closed

Closed

Open

 

5

Closed

Open

Open

 

6

Open

Closed

Open

7

Open

Open

Open

DMA CHANNEL SELECTION

Channel

Y31

Y32

 

0

Open

Open

5

Closed

Closed

 

6

Closed

Open

 

7

Open

Closed

BIOS ADDRESS SELECTION

Address

Y36

Y37

C8000h

Closed

Closed

 

D8000h

Closed

Open

 

DC000h

Open

Closed

 

Disabled

Open

Open

BASE I/O ADDRESS SELECTION

Address

Y33

Y35

1F0h

Closed

Closed

 

170h

Open

Closed

 

230h

Open

Open

 

330h

Closed

Open

INTERRUPT SELECTION

IRQ

Y29

Y30

IRQ12

Open

Closed

IRQ14

Closed

Closed

IRQ15

Closed

Open

Disabled

Open

Open

MEMCS16 ISA BUS SIGNAL SELECTION

Setting

Y21

Y28

Ignore signal

Open

Closed

Decode signal

Closed

Open

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

1 - 8

Unidentified

Rotate in bit pattern

Controller in Idle state

     

Controller in Active state:

1

Unidentified

On

Busy

2

Unidentified

On

Computer bus transfer to controller

3

Unidentified

On

Computer bus transfer from controller

4

Unidentified

On

Cache hit

5

Unidentified

On

Disk read-ahead active

6

Unidentified

On

Disk read

7

Unidentified

On

Disk write

8

Unidentified

On

Controller reset

9

Unidentified

On

Controller interrupt pending to computer

10

Unidentified

On

DRQ asserted to computer

1 - 4, 5 - 8

Unidentified

Blinking together alternately

Controller in Fatal Trap state (will not let computer boot)

     

Controller in power up state (3 stages):

1 - 10

Unidentified

On

(1) Display amount of cache in a binary pattern, with LED 1 as the least significant binary digit.

1, 2, 5, 6

Unidentified

Blinking together alternately

(2) Waiting period

2, 3, 6, 7

Unidentified

Blinking together alternately

(2) Waiting period

1, 3, 5, 7

Unidentified

Blinking together alternately

(3) Contact is being established with SCSI drives

2, 4, 6

Unidentified

Blinking together alternately

(3) Contact is being established with SCSI drives

MISCELLANEOUS TECHNICAL NOTES

The controller cannot use caching without the CM401X caching module. The MM401X memory modules cannot operate without the caching module.

The memory modules come in 2MB and 4MB size but can only be installed one at the time unless the MX401X expansion card is connected to the controller.

DM401X is the disk mirroring module which provide RAID 1 disk mirroring capability.