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# UNIDENTIFIED
10MHz/8MHz SYSTEM BOARD
Processor 8088
Processor Speed 8/10MHz
Chip Set Unidentified
Max. Onboard DRAM 640KB
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options None
NPU Options 8087
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Reset switch | JP1 | Speaker | JP4 |
|--------------------+----------+-----------------+----------|
| Keylock | JP2 | Power LED | JP7 |
|--------------------+----------+-----------------+----------|
| Turbo LED | JP3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Switch | Position |
|----------------------------------+-----------+-------------|
| | NPU enabled | SW1/2 | Off |
|---+------------------------------+-----------+-------------|
| | NPU disabled | SW1/2 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 256K | (9) 41256 | NONE | NONE | NONE |
|--------+------------+------------+------------+------------|
| 512K | (9) 41256 | (9) 41256 | NONE | NONE |
|--------+------------+------------+------------+------------|
| 640K | (9) 41256 | (9) 41256 | (9) 4164 | (9) 4164 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/3 | SW1/4 |
|--------------------+-------------------+-------------------|
| None | On | On |
|--------------------+-------------------+-------------------|
| 256KB | Off | Off |
|--------------------+-------------------+-------------------|
| 512KB | On | Off |
|--------------------+-------------------+-------------------|
| 640KB | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | SW1/1 |
|-------------------------------+----------------------------|
| 4.77MHz | Off |
|-------------------------------+----------------------------|
| 8MHz | On |
|-------------------------------+----------------------------|
| 10MHz | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE SELECTION |
|------------------------------------------------------------|
| Type | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| None | On | On |
|--------------------+-------------------+-------------------|
| Color 40 x 20 | Off | On |
|--------------------+-------------------+-------------------|
| Color 80 x 25 | On | Off |
|--------------------+-------------------+-------------------|
| Monochrome or both | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Number of drives | SW1/7 | SW1/8 |
|--------------------+-------------------+-------------------|
| 1 | On | On |
|--------------------+-------------------+-------------------|
| 2 | Off | On |
|--------------------+-------------------+-------------------|
| 3 | On | Off |
|--------------------+-------------------+-------------------|
| 4 | Off | Off |
+------------------------------------------------------------+