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# UNIDENTIFIED
ML-863
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit VL-bus |
|-------------------+----------------------------------------|
| Size: | Three-quarter length, half-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE(AT) drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 25-pin parallel port - external | CN1 |
|-------------------------------------------------+----------|
| 10-pin serial port 2 - internal | CN2 |
|-------------------------------------------------+----------|
| 9-pin serial port 1 - external, 10-pin serial | CN3 |
| port 1 - internal | |
|-------------------------------------------------+----------|
| 16-pin game port | CN4 |
|-------------------------------------------------+----------|
| 34-pin cable connector - floppy drive | CN5 |
|-------------------------------------------------+----------|
| 40-pin primary IDE(AT) connector | CN6 |
|-------------------------------------------------+----------|
| 4-pin connector - drive active LED | CN7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| » | IOCHRDY signal disabled | JP1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | IOCHRDY signal enabled | JP1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | CPU speed is 40,50 MHz | JP2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | CPU speed is <=33MHz | JP2 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | IDE(AT) interface enabled | JP3 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | IDE(AT) interface disabled | JP3 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy drive interface enabled | JP4 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Floppy drive interface | JP4 | pins 2 & 3 |
| | disabled | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CONTINUED) |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------+----------+----------------|
| » | Game port enabled | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------+----------+----------------|
| | Game port disabled | JP5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------+----------+----------------|
| » | Floppy drive select | JP7 | pins 1 & 2 |
| | primary | | closed |
|---+----------------------------+----------+----------------|
| | Floppy drive select | JP7 | pins 2 & 3 |
| | secondary | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| LPT | JP6 | JP12 |
|------------------+--------------------+--------------------|
| » | LPT2(378h) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | LPT3 (278h) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 ADDRESS SELECTION |
|------------------------------------------------------------|
| COM | JP10 | JP11 |
|------------------+--------------------+--------------------|
| » | COM1 (3F8h) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | COM3 (3E8h) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| COM | JP8 | JP9 |
|------------------+--------------------+--------------------|
| » | COM2 (2F8h) | pins 1 & 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | COM4 (2E8h) | pins 2 & 3 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | Disabled | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE HARD DISK DRIVE SPEED SELECTION |
|------------------------------------------------------------|
| Device Speed | JP13 | JP14 |
|-------------------------+----------------+-----------------|
| » | Low - 600ns | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|---+---------------------+----------------+-----------------|
| | Normal - 500ns | pins 1 & 2 | pins 2 & 3 |
| | | closed | closed |
|---+---------------------+----------------+-----------------|
| | Fast speed - 383ns | pins 2 & 3 | pins 1 & 2 |
| | | closed | closed |
|---+---------------------+----------------+-----------------|
| | Turbo speed - 240ns | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| The location of pin 1 is unidentified on jumpers JP1-JP12. |
+------------------------------------------------------------+