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





DUAL SIO

SEALEVEL SYSTEMS, INC.

DUAL SIO

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2 RS-422 or RS-485)

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

USER CONFIGURABLE SETTINGS

Function

Label

Position

Port 1 enabled

SW1/8

On

Port 1 disabled

SW1/8

Off

Port 2 enabled

SW2/8

On

Port 2 disabled

SW2/8

Off

Port 1 enabled by RTS

E3

Closed

Port 1 always enabled

E3

Open

Port 2 enabled by RTS

E4

Closed

Port 2 always enabled

E4

Open

BASE I/O ADDRESS SELECTION PORT 1

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

 

280h

Off

On

Off

On

On

On

On

 

2AOh

Off

On

Off

On

Off

On

On

 

2E8h

Off

On

Off

Off

Off

On

Off

 

2F8h

Off

On

Off

Off

Off

Off

Off

 

3E8h

Off

Off

Off

Off

Off

On

Off

 

300h

Off

Off

On

On

On

On

On

 

328h

Off

Off

On

On

Off

On

Off

3F8h

Off

Off

Off

Off

Off

Off

Off

BASE I/O ADDRESS SELECTION PORT 2

Setting

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

 

280h

Off

On

Off

On

On

On

On

 

2A0h

Off

On

Off

On

Off

On

On

 

2E8h

Off

On

Off

Off

Off

On

Off

2F8h

Off

On

Off

Off

Off

Off

Off

 

3E8h

Off

Off

Off

Off

Off

On

Off

 

300h

Off

Off

On

On

On

On

On

 

328h

Off

Off

On

On

Off

On

Off

 

3F8h

Off

Off

Off

Off

Off

Off

Off

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

E1/A

E1/B

E1/C

E1/D

 

IR/FONT>

Closed

Open

Open

Open

 

IRQ3

Open

Closed

Open

Open

IRQ4

Open

Open

Closed

Open

 

IRQ5

Open

Open

Open

Closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

E1/A

E1/B

E1/C

E1/D

 

IR/FONT>

Closed

Open

Open

Open

IRQ3

Open

Closed

Open

Open

 

IRQ4

Open

Open

Closed

Open

 

IRQ5

Open

Open

Open

Closed