CHASE RESEARCH, INC .

CHASE AT-FAST 4

Card Type

Serial card

Chip Set

Unidentified

I/O Options

Serial ports (4)

Card Size

Half-length, full-height

CONNECTIONS

Function

Label

Serial

CN1

CONNECTIONS

Function

Label

Position

Card starts in high speed mode

JP4

Pins 1 & 2 closed

Card starts in normal speed mode

JP4

Pins 3 & 4 closed

I/O ADDRESS SELECTION

Address

JP1/A

JP1/B

JP1/C

JP1/D

JP2/A

JP2/B

JP2/C

100h

Closed

Open

Open

Open

Closed

Open

Open

140h

Open

Closed

Open

Open

Closed

Open

Open

180h

Open

Open

Closed

Open

Closed

Open

Open

1C0h

Open

Open

Open

Closed

Closed

Open

Open

200h

Closed

Open

Open

Open

Open

Closed

Open

240h

Open

Closed

Open

Open

Open

Closed

Open

280h

Open

Open

Closed

Open

Open

Closed

Open

2C0h

Open

Open

Open

Closed

Open

Closed

Open

300h

Closed

Open

Open

Open

Open

Open

Closed

340h

Open

Closed

Open

Open

Open

Open

Closed

380h

Open

Open

Closed

Open

Open

Open

Closed

3C0h

Open

Open

Open

Closed

Open

Open

Closed

INTERRUPT SELECTION

IRQ

JP3/A

JP3/B

JP3/C

JP3/D

JP3/E

JP3/F

JP3/G

JP3/H

IRQ15

Closed

Open

Open

Open

Open

Open

Open

Open

IRQ12

Open

Closed

Open

Open

Open

Open

Open

Open

IRQ11

Open

Open

Closed

Open

Open

Open

Open

Open

IRQ10

Open

Open

Open

Closed

Open

Open

Open

Open

IRQ7

Open

Open

Open

Open

Closed

Open

Open

Open

IRQ5

Open

Open

Open

Open

Open

Closed

Open

Open

IRQ4

Open

Open

Open

Open

Open

Open

Closed

Open

IRQ3

Open

Open

Open

Open

Open

Open

Open

Closed