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# MODULAR CIRCUIT TECHNOLOGY
MCT-VIO
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit, VL-bus |
|-------------------+----------------------------------------|
| Size: | Three/quarter-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE (AT) interface drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-----------------------------------------------+------------|
| 9-pin serial port - external | CN1 |
|-----------------------------------------------+------------|
| 25-pin parallel port - external | CN2 |
|-----------------------------------------------+------------|
| 40-pin IDE (AT) Interface connector | JP4 |
|-----------------------------------------------+------------|
| 34-pin control cable connector - floppy drive | JP6 |
|-----------------------------------------------+------------|
| 10-pin serial port - internal | JP8 |
|-----------------------------------------------+------------|
| 16-pin game port - internal | JP9 |
|-----------------------------------------------+------------|
| 4-pin connector - drive active LED | JP20 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| » | Floppy drive enable | J1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy drive disable | J1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | IDE address is 1F0-1F7 | J2 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | IDE address is 170-177 | J2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy drive designation | J3 | pins 2 & 3 |
| | normal | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy drive designation | J3 | pins 1 & 2 |
| | change | | closed |
|---+--------------------------------+----------+------------|
| » | IDE controller enable | J4 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | IDE controller disable | J4 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | IDE I/O address is 1F0-1F7, | J5 | pins 2 & 3 |
| | 3F0-3F7 | | closed |
|---+--------------------------------+----------+------------|
| » | IDE I/O address is 170-177, | J5 | pins 1 & 2 |
| | 370-377 | | closed |
|---+--------------------------------+----------+------------|
| » | Game port enable | J12 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Game port disable | J12 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | 1 IDE drive installed | JP5 | closed |
|---+--------------------------------+----------+------------|
| » | 2 IDE drives installed | JP5 | open |
| | (master/slave) | | |
|---+--------------------------------+----------+------------|
| » | Printer port as bi-directional | JP7 | closed |
|---+--------------------------------+----------+------------|
| » | Printer port as | JP7 | open |
| | uni-directional | | |
|---+--------------------------------+----------+------------|
| » | IDE(AT) interrupt select IRQ | JP10 | closed |
| | 14 | | |
|---+--------------------------------+----------+------------|
| » | IRQ 14 disabled | JP10 | open |
|---+--------------------------------+----------+------------|
| » | COM2 or COM4 interrupt select | JP11 | closed |
| | IRQ 3 | | |
|---+--------------------------------+----------+------------|
| » | IRQ 3 disabled | JP11 | open |
|---+--------------------------------+----------+------------|
| » | COM1 or COM3 interrupt select | JP12 | closed |
| | IRQ 4 | | |
|---+--------------------------------+----------+------------|
| » | IRQ 4 disabled | JP12 | open |
|---+--------------------------------+----------+------------|
| » | FDC interrupt select IRQ 6 | JP13 | closed |
|---+--------------------------------+----------+------------|
| » | IRQ 6 disabled | JP13 | open |
|---+--------------------------------+----------+------------|
| » | IRQ 5 disabled | JP14 | open |
|---+--------------------------------+----------+------------|
| » | LPT interrupt select IRQ 5 | JP14 | closed |
|---+--------------------------------+----------+------------|
| » | LPT interrupt select IRQ 7 | JP15 | closed |
|---+--------------------------------+----------+------------|
| » | IRQ 7 disabled | JP15 | open |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP16 | N/A |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP18 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT | J6 | J7 |
|--------------------+-------------------+-------------------|
| » | LPT1 (378-37F) | pins 2 & 3 closed | pins 2 & 3 closed |
|---+----------------+-------------------+-------------------|
| » | LPT2 (278-27F) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | LPT3 (3BC-3BE) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | Disabled | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| COM | J8 | J9 |
|--------------------+-------------------+-------------------|
| » | COM1 (3F8-3FF) | pins 2 & 3 closed | pins 2 & 3 closed |
|---+----------------+-------------------+-------------------|
| » | COM3 (3E8-3EF) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | COM4 (2E8-2EF) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | Disabled | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| COM | J10 | J11 |
|--------------------+-------------------+-------------------|
| » | COM2 (2F8-2FF) | pins 2 & 3 closed | pins 2 & 3 closed |
|---+----------------+-------------------+-------------------|
| » | COM4 (2E8-2EF) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | COM3 (3E8-3EF) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| » | Disable | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA /ISA CONFIGURATION |
|------------------------------------------------------------|
| Mode | J15 | JP17 |
|-----------------------+-------------------+----------------|
| » | VESA | pins 2 & 3 closed | open |
|---+-------------------+-------------------+----------------|
| » | ISA | pins 1 & 2 closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE WAIT STATE CONTROL |
|------------------------------------------------------------|
| IDE Wait State Control | J16 | J17 |
|------------------------+-----------------+-----------------|
| » | 50MHz VL bus clock | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
|---+--------------------+-----------------+-----------------|
| » | 25MHz VL bus clock | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|---+--------------------+-----------------+-----------------|
| » | 33MHz VL bus clock | pins 2 & 3 | pins 1 & 2 |
| | | closed | closed |
|---+--------------------+-----------------+-----------------|
| » | 40MHz VL bus clock | pins 1 & 2 | pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| 50MHz is not part of the VESA standard and may not be |
| compatible with some systems. |
+------------------------------------------------------------+