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# GSI, INC.
MODEL 12
Card Type Floppy drive/Tape controller
Chip Set Unidentified
Maximum Onboard None
Memory
I/O Options Floppy drive interface (2)
Data Bus 8-bit ISA
Floppy drives Four 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB
supported drives
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-----------------------------+-------+--------------+-------|
| 2.88 Mb floppy/tape drive | J2 | Floppy drive | J3 |
| interface | | interface | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+