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# MICRO SOLUTIONS, INC.
COMPATICARD IV
Card Type Floppy drive controller
Chipset/Controller Intel
I/O Options Floppy drive interface (supports up to four
drives)
Maximum DRAM N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| Floppy drive | P2 | Floppy drive | P4 |
| interface (Internal) | | interface | |
| | | (External) | |
|-----------------------+----------+--------------+----------|
| Floppy drive | P3 | | |
| interface (Internal) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED - DO NOT ALTER |
|------------------------------------------------------------|
| Switch | Position |
|-------------------------------+----------------------------|
| SW1/switch 4 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONTROLLER ADDRESS SELECTION |
|------------------------------------------------------------|
| Controller | J1/Pins 1 | J1/Pins 3 | J1/Pins 5 | J1/Pins 7 |
| | & 2 | & 4 | & 6 | & 8 |
|------------+-----------+-----------+-----------+-----------|
| » | First | Closed | Open | Open | Open |
|---+--------+-----------+-----------+-----------+-----------|
| | Second | Open | Closed | Open | Open |
|---+--------+-----------+-----------+-----------+-----------|
| | Third | Open | Open | Closed | Open |
|---+--------+-----------+-----------+-----------+-----------|
| | Fourth | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTERNAL POWER CONFIGURATION |
|------------------------------------------------------------|
| Power | +5V |+12V| GND | J3 | J4 | J5 | J6 |
| convention | | | | | | | |
|--------------+-----+----+------+------+------+------+------|
|» | Disabled |None |None| N/A |Pins 1|Pins 1|Pins 1|Pins 1|
| | | | | | & 2 | & 2 | & 2 | & 2 |
|--+-----------+-----+----+------+------+------+------+------|
| | Micro |Pin 2|Pin | Pins |Pins 1|Pins 1|Pins 2|Pins 2|
| | Solutions | | 1 |20-37 | & 2 | & 2 | & 3 | & 3 |
|--+-----------+-----+----+------+------+------+------+------|
| | Alternate |Pin 4|Pin |Pins 2|Pins 2|Pins 2|Pins 1|Pins 2|
| | | | 1 | & 3 | & 3 | & 3 | & 2 | & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
| For most applications, power is supplied by a power supply|
| in the external drive cabinet and the Power Convention |
| should be disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 |
|-------------------+-------------+-------------+------------|
| » | CE00:0000h | Off | On | Off |
|---+---------------+-------------+-------------+------------|
| | CC00:0000h | Off | Off | On |
|---+---------------+-------------+-------------+------------|
| | D000:0000h | Off | On | On |
|---+---------------+-------------+-------------+------------|
| | D800:0000h | On | Off | Off |
|---+---------------+-------------+-------------+------------|
| | DE00:0000h | On | Off | On |
|---+---------------+-------------+-------------+------------|
| | E800:0000h | On | On | Off |
|---+---------------+-------------+-------------+------------|
| | EE00:0000h | On | On | On |
|---+---------------+-------------+-------------+------------|
| | Disabled | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
|DMA | J2/7 | J2/8 | J2/9 |J2/10 |J2/11 |J2/12 |SW1/5 |SW1/6 |
|----+------+------+------+------+------+------+------+------|
|»|2 | On |Closed| On | On |Closed| On | On | Off |
|-+--+------+------+------+------+------+------+------+------|
| |2 | On |Closed| On | On |Closed| On | Off | Off |
|-+--+------+------+------+------+------+------+------+------|
| |1 |Closed| On | On |Closed| On | On | Off | On |
|-+--+------+------+------+------+------+------+------+------|
| |3 | On | On |Closed| On | On |Closed| On | On |
|------------------------------------------------------------|
|Note: When both switches are Off, the DMA is set for 2, and |
|the interrupt must be set for IRQ6. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J2/1 | J2/2 | J2/3 | J2/4 | J2/5 | J2/6 |
|------+--------+--------+--------+--------+--------+--------|
|»| 2 | Closed | Open | Open | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 3 | Open | Closed | Open | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 4 | Open | Open | Closed | Open | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 5 | Open | Open | Open | Closed | Open | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 6 | Open | Open | Open | Open | Closed | Open |
|-+----+--------+--------+--------+--------+--------+--------|
| | 7 | Open | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DUAL SPEED DRIVE CONFIGURATION |
|------------------------------------------------------------|
| 1.2MB Drive Type | SW1/7 |
|------------------------------------+-----------------------|
| » | Single Speed | Off |
|-----+------------------------------+-----------------------|
| | Dual Speed | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO BOOT CONFIGURATION |
|------------------------------------------------------------|
| Auto Boot | SW1/7 |
|----------------------------------------+-------------------|
| » | Enabled | On |
|---------------+------------------------+-------------------|
| | Disabled | Off |
|------------------------------------------------------------|
| Note: When Auto Boot is enabled, Compaticard IV will |
| search each drive installed looking for a DOS system |
| disk. If no System disk is found, system boot will |
| proceed as normal. If a DOS system disk is encountered, |
| system will boot from that drive. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE TYPE SELECTION |
|------------------------------------------------------------|
| Drive Type | Position | Cable | Connection | Setting |
| | # | Type Used | | |
|-------------+----------+-----------+------------+----------|
| 360KB/1.2MB | 0 | Twisted | P2 | SW2/1 |
| | | | | Off, |
| | | | | SW2/2 on |
|-------------+----------+-----------+------------+----------|
| 1.4MB | 1 | Straight | P2 | SW2/3 |
| | | | | on, |
| | | | | SW2/4 |
| | | | | Off |
|-------------+----------+-----------+------------+----------|
| 2.8MB | 2 | Twisted | P3 or P4 | SW2/5 |
| | | | | on, |
| | | | | SW2/6 on |
|-------------+----------+-----------+------------+----------|
| None | 3 | Straight | P3 or P4 | SW2/7 |
| | | | | Off, |
| | | | | SW2/8 |
| | | | | Off |
+------------------------------------------------------------+