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ACB-V

SEALEVEL SYSTEMS, INC.

ACB-V

Card Type

Serial controller

Chip Set

Unidentified

I/O Options

Serial ports (2)

Data Bus

8-bit ISA

Card Size

Half-length, full-height

CONNECTIONS

Function

Location

Function

Location

Serial port 1 (Channel A)

P1

Serial port 2 (Channel B)

P2

INTERRUPT SELECTION

IRQ

E3/2

E3/3

E3/4

E3/5

IRQ2

Closed

Open

Open

Open

IRQ3

Open

Closed

Open

Open

IRQ4

Open

Open

Closed

Open

IRQ5

Open

Open

Open

Closed

IRQ MODE SELECTION

Setting

Label

Position

Normal mode enabled

E3/N

Closed

Normal mode disabled

E3/N

Open

Multi mode enabled

E3/M

Closed

Multi mode disabled

E3/M

Open

DMA CHANNEL SELECTION

Channel A

Channel B

E1

E2

Disabled

Disabled

Open

Open

Ch.1 half-duplex

Disabled

Jumper 4 closed

Jumpers 4 & 6 closed

Ch.3 half-duplex

Disabled

Jumper 2 closed

Jumpers 4 & 5 closed

Disabled

Ch.1 half-duplex

Jumpers 3 & 5 closed

Jumper 6 closed

Disabled

Ch.3 half-duplex

Jumpers 1 & 5 closed

Jumper 5 closed

Ch.1 half-duplex

Ch.3 half-duplex

Jumpers 1, 4, & 5 closed

Jumpers 1 & 3 closed

Ch.3 half-duplex

Ch.1 half-duplex

Jumpers 2, 3, & 5 closed

Jumpers 1 & 2 closed

Full-duplex - Ch.1 receive & Ch.3 transmit

Disabled

Jumpers 1, 4, & 6 closed

Jumpers 1 & 4 closed

Full-duplex - Ch.3 receive & Ch.1 transmit

Disabled

Jumpers 2, 3, & 6 closed

Jumpers 1 & 4 closed

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

238h

Off

On

On

On

Off

Off

Off

280h

Off

On

Off

On

On

On

On

2A0h

Off

On

Off

On

Off

On

On

2E8h

Off

On

Off

Off

Off

On

Off

300h

Off

Off

On

On

On

On

On

5500h

Off

Off

Off

On

Off

Off

Off

6500h

Off

Off

On

Off

Off

Off

Off

7100h

Off

On

Off

Off

Off

Off

Off

7300h

On

Off

Off

Off

Off

Off

Off

7500h

Off

Off

Off

Off

Off

Off

Off

Note:

A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/7 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/7=16384, SW1/6=8192, SW1/5=4096, SW1/4=2048, SW1/3=1024, SW1/2=512, SW1/1=256. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

EPROM ADDRESS CONFIGURATION

Address

SW2/1

SW2/2

SW2/3

SW2/4

C000h

On

On

On

On

C400h

On

On

On

Off

C800h

On

On

Off

On

D000h

On

Off

On

On

D400h

On

Off

On

Off

D800h

On

Off

Off

On

E000h

Off

On

On

On

E400h

Off

On

On

Off