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                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/M-O/20599-1.png>
   

   +------------------------------------------------------------+
   |                        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.                |
   +------------------------------------------------------------+