...because we can't all be on the bleeding edge...





DATASHARK

SEALEVEL SYSTEMS, INC.

DATASHARK

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2)

Hard Drives supported

None

Floppy drives supported

None

Data Bus

16-bit ISA

Card Size

Full-height

CONNECTIONS

Function

Label

Function

Label

Serial Port 1

J2

Serial Port 2

J3

USER CONFIGURABLE SETTINGS

Function

Label

Position

Port 2 enabled

E6

Closed

Port 2 disabled

E6

Open

BASE I/O ADDRESS SELECTION

Port 1

Port 2

SW1/1

SW1/2

SW1/3

SW1/4

3F8h

2F8h

On

On

On

Off

 

3E8h

2E8h

On

On

Off

On

 

2F8h

2E8h

On

On

Off

Off

 

2F8h

3E8h

On

Off

On

On

 

3220h

3228h

On

Off

On

Off

 

4220h

4228h

On

Off

Off

On

 

5220h

5228h

On

Off

Off

Off

 

5220h

4220h

Off

On

On

On

 

280h

290h

Off

On

On

Off

 

300h

308h

Off

On

Off

On

 

310h

318h

Off

On

Off

Off

 

280h

288h

Off

Off

On

On

 

290h

298h

Off

Off

On

Off

 

300h

280h

Off

Off

Off

On

 

Disabled

Disabled

Off

Off

Off

Off

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

E1/A

E1/B

E1/C

E1/D

E1/E

E1/F

E1/G

E1/H

E1/I

 

2/9

Closed

Open

Open

Open

Open

Open

Open

Open

Open

 

3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

15

Open

Open

Open

Open

Open

Open

Open

Open

Closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

E2/A

E2/B

E2/C

E2/D

E2/E

E2/F

E2/G

E2/H

E2/I

 

2/9

Closed

Open

Open

Open

Open

Open

Open

Open

Open

 

3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

15

Open

Open

Open

Open

Open

Open

Open

Open

Closed

SERIAL INTERRUPT MODE SELECTION PORT 1

IRQ

E3

Normal

Pins 1 & 3, 2 & 4 closed

 

Shared Interrupt mode without resistor

Pins 3 & 5, 4 & 6 closed

 

Shared Interrupt mode with resistor

Pins 3 & 5, 4 & 6, 8 & 10 closed

 

None

Open

Note: When using the shared interrupt mode, either port 1 or port 2 must include a 1K ohm pull-down resistor. This is done by either closing pins 7 & 9 or pins 8 & 10 on E3. If there is more than one Datashark in use, or if you wish to completely remove the pull-down resistor for hardware compatibility, set E3 in shared interrupt mode and do not include the pull-down resistor. This will prevent the ports from triggering an interrupt.

PORT 1 CLOCK MODES

DIVIDE

E4

1

Pins 5 & 6 closed

2

Pins 3 & 4 closed

4

Pins 1 & 2 closed

PORT 2 CLOCK MODES

DIVIDE

E5

1

Pins 5 & 6 closed

2

Pins 3 & 4 closed

4

Pins 1 & 2 closed