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MODEL 12

GSI, INC.

MODEL 12

Card Type

Floppy drive/Tape controller

Chip Set

Unidentified

Maximum Onboard Memory

None

I/O Options

Floppy drive interface (2)

Data Bus

8-bit ISA

Floppy drives supported

Four 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB drives

CONNECTIONS

Function

Label

Function

Label

2.88 Mb floppy/tape drive interface

J2

Floppy drive interface

J3

BIOS ADDRESS SELECTION

Address

J4

 

C800h - C9FFh

Pins 5 &6, 9 & 10 closed

CC00h - CDFFh

Pins 5 & 6, 11 & 12 closed

 

D000h - 1DFFh

Pins 7 & 8, 9 & 10 closed

 

E000h - E1FFh

Pins 7 & 8, 11 & 12 closed

FLOPPY DRIVE CONFIGURATION

Setting

J4

 

Primary

Pins 1 & 2 closed

Secondary

Pins 3 & 4 closed

INTERRUPT SELECTION

IRQ

J6

 

3

Pins 1 & 2 closed

 

5

Pins 3 & 4 closed

6

Pins 5 & 6 closed

DMA CHANNEL SELECTION

Channel

J5

 

1

Pins 1 & 2 closed

2

Pins 3 & 4 closed

 

3

Pins 5 & 6 closed