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





DUOCOM

SEALEVEL SYSTEMS, INC.

DUOCOM

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2 RS-232)

Hard Drives supported

None

Floppy drives supported

None

Data Bus

8-bit ISA

Card Size

Half-length, full-height

CONNECTIONS

Function

Label

Function

Label

Serial Port 1

J1

Serial Port 2

J2

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

 

IR/FONT>

Closed

Open

Open

Open

Open

Open

Open

Open

Open

 

IRQ3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

IRQ4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

IRQ5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

IRQ7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

IRQ10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

IRQ11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

IRQ12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

IRQ15

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

 

IR/FONT>

Closed

Open

Open

Open

Open

Open

Open

Open

Open

IRQ3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

 

IRQ4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

IRQ5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

IRQ7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

IRQ10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

IRQ11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

IRQ12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

IRQ15

Open

Open

Open

Open

Open

Open

Open

Open

Closed

SERIAL INTERRUPT MODE SELECTION

IRQ

E3

Normal

Pins 1 & 3, 2 & 4 closed

 

Shared Interrupt mode

Pins 3 & 5, 6 & 8 closed

 

Shared Interrupt mode when using more than one DUOCOM

Pins 3 & 5, 4 & 6 closed

 

None

Open