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# DELL COMPUTER CORPORATION
Turbo ARC
Processor 8088
Processor Speed 4.77/8MHz
Chip Set None
Max. Onboard DRAM 640KB
Cache None
BIOS Phoenix
Dimensions 334mm x 218mm
I/O Options None
NPU Options 8087
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------+----------+-----------------------+------------|
| Speaker | SPK | Turbo LED & power LED | LED |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | CPU speed select fast | JP1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select normal | JP1 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/1 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | NPU disabled | SW1/2 | On |
|---+---------------------------+---------------+------------|
| | NPU enabled | SW1/2 | Off |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/3 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/4 | Off |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 |
|----------------------+-------------------------------------|
| 256KB | pins 2 & 3 closed |
|----------------------+-------------------------------------|
| 640KB | pins 1 & 2 closed |
|------------------------------------------------------------|
| Note: System memory is factory configured at 640KB and |
| should not be removed. Setting JP2 pins 2 & 3 closed |
| forces the system to only recognize 256KB. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Drives installed | SW1/7 | SW1/8 |
|--------------------+-------------------+-------------------|
| 1 | On | On |
|--------------------+-------------------+-------------------|
| 2 | Off | On |
|--------------------+-------------------+-------------------|
| 3 | On | Off |
|--------------------+-------------------+-------------------|
| 4 | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR CONFIGURATION |
|------------------------------------------------------------|
| Type | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| EGA | On | On |
|--------------------+-------------------+-------------------|
| CGA | On | Off |
|--------------------+-------------------+-------------------|
| MDA | Off | Off |
+------------------------------------------------------------+