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# NCR CORPORATION
MODEL 3279-16XX PC916SX (REV. 03-92)
MODEL PC 710 KFC
Processor 80386SX (exact location unidentified)
Processor Speed 16MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard Memory None
Maximum Video Memory None
Cache None
BIOS Unidentified
Dimensions Unidentified
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J2 | Speaker | J4 |
|------------------+----------+-------------------+----------|
| Power LED & | J3 | Auxiliary | J5 |
| keylock | | keyboard | |
| | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP3 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Monitor type select color | S1 | Left |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | S1 | Right |
|---+---------------------------------+-------+--------------|
| » | Power on frequency speed select | S2 | Left |
| | 16MHz | | |
|---+---------------------------------+-------+--------------|
| | Power on frequency speed select | S2 | Right |
| | 8MHz | | |
|---+---------------------------------+-------+--------------|
| » | Wait state select 4 wait states | SW3/1 | Off |
|---+---------------------------------+-------+--------------|
| | Wait state select 3 wait states | SW3/1 | On |
|---+---------------------------------+-------+--------------|
| » | Auto switch enabled | SW3/2 | Off |
|---+---------------------------------+-------+--------------|
| | 8MHz mode enabled | SW3/2 | On |
|---+---------------------------------+-------+--------------|
| » | 0 - 512KB enabled | SW3/3 | Off |
|---+---------------------------------+-------+--------------|
| | 0 - 256KB enabled/256KB - 512KB | SW3/3 | On |
| | disabled | | |
|---+---------------------------------+-------+--------------|
| » | 512KB - 1MB enabled | SW3/4 | Off |
|---+---------------------------------+-------+--------------|
| | 512KB - 1MB disabled | SW3/4 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM MEMORY MAPPING SELECTION |
|------------------------------------------------------------|
| External | Mapping area | SW3/5 | SW3/6 | SW3/7 | SW3/8 |
| memory | | | | | |
|-----------+----------------+-------+-------+-------+-------|
| | 0MB | Not selected | On | On | On | On |
|---+-------+----------------+-------+-------+-------+-------|
| » | 0MB | 100000H - | Off | On | On | On |
| | | 16000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 1MB | 200000H - | On | Off | On | On |
| | | 26000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 2MB | 300000H - | Off | Off | On | On |
| | | 36000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 3MB | 400000H - | On | On | Off | On |
| | | 46000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 4MB | 500000H - | Off | On | Off | On |
| | | 56000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 5MB | 600000H - | On | Off | Off | On |
| | | 66000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 6MB | 700000H - | Off | Off | Off | On |
| | | 76000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 7MB | 800000H - | On | On | On | Off |
| | | 86000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 8MB | 900000H - | Off | On | On | Off |
| | | 96000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 9MB | A00000H - | On | Off | On | Off |
| | | A60000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 10MB | B00000H - | Off | Off | On | Off |
| | | B60000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 11MB | C00000H - | On | On | Off | Off |
| | | C60000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 12MB | D00000H - | Off | On | Off | Off |
| | | D60000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 13MB | E00000H - | On | Off | Off | Off |
| | | E60000H | | | | |
|---+-------+----------------+-------+-------+-------+-------|
| | 14MB | F00000H - | Off | Off | Off | Off |
| | | F60000H | | | | |
|------------------------------------------------------------|
| Note: The memory is located on the mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| WAITSTATES AT DMA TRANSFERS SELECTION |
|------------------------------------------------------------|
| IOW/MEMR/MEMW | IOR | JP1 | JP2 |
|---------------+--------+-----------------+-----------------|
| | 250ns | 500ns | Pins 2 & 3 | Pins 2 & 3 |
| | | | closed | closed |
|-----+---------+--------+-----------------+-----------------|
| » | 500ns | 750ns | Pins 2 & 3 | Pins 1 & 2 |
| | | | closed | closed |
|-----+---------+--------+-----------------+-----------------|
| | 750ns | 1000ns | Pins 1 & 2 | Pins 2 & 3 |
| | | | closed | closed |
|-----+---------+--------+-----------------+-----------------|
| | 1000ns | 1250ns | Pins 1 & 2 | Pins 1 & 2 |
| | | | closed | closed |
+------------------------------------------------------------+