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HBA-SA0

CMS ENHANCEMENTS, INC.

HBA-SA0

Data Bus

8/16 bit ISA

Card Size

Full height, half length

Hard Drives Supported

Up to 7 SCSI devices

Floppy Drives Supported

None

CONNECTIONS

Function

Label

Function

Label

50-pin SCSI connector - internal

J1

1.5A fuse

F1

50-pin SCSI connector - external

J2

4-pin drive active LED

LED3

3-pin DC power out

J6

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

TERMPWR enabled

W1

Pins 1 & 2 closed

 

TERMPWR disabled

W1

Pins 2 & 3 closed

Card uses 8-bit transfers

W5

Pins 1 & 2 closed

 

Card uses 16-bit transfers

W5

Pins 2 & 3 closed

SOFTWARE SUPPORTED CONFIGURATIONS

BIOS Address

IRQ

DMA

C000h

10

6

C800h

11

6

D000h

12

7

D800h

10

5

Note:IRQ and DMA are BIOS address dependent and must be set in these combinations.

BIOS ADDRESS SELECTION

Setting

S3/7

S3/8

 

C000h

On

On

 

C800h

Off

On

 

D000h

On

Off

D800h

Off

Off

DMA CHANNEL SELECTION

Setting

W2/A

W2/B

W2/C

W4/A

W4/B

W4/C

DMA5

Open

Open

Closed

Open

Open

Closed

 

DMA6

Open

Closed

Open

Open

Closed

Open

 

DMA7

Closed

Open

Open

Closed

Open

Open

INTERRUPT SELECTION

Setting

W3/A

W3/B

W3/C

IRQ10

Open

Open

Closed

 

IRQ11

Open

Closed

Open

 

IRQ12

Closed

Open

Open

DMA TRANSFER RATE

Transfer

DRAM

S3/1

S3/2

S3/3

S3/4

S3/5

S3/6

3.33MBps

200-250nS

Off

On

Off

On

Off

Off

 

4.55MBps

150-200nS

Off

Off

On

On

On

Off

 

5.56MBps

120-150nS

On

Off

On

Off

Off

On

 

7.14MBps

80-120nS

Off

On

On

On

Off

On

 

10MBps

40-80nS

On

On

On

Off

On

On

 

12.5MBps

<40nS

On

On

On

On

On

On

SCSI TERMINATION

Setting

R1

R2

R3

Terminated

Installed

Installed

Installed

Not terminated

Not installed

Not installed

Not installed