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# TEXAS INSTRUMENTS
SYSTEM 1200/1300
Processor 80386DX
Processor Speed 16/20MHz
Chip Set Texas Instruments
Max. onboard 8MB
DRAM
Cache None
BIOS Texas Instruments
Dimensions 260mm x 220mm
I/O Options External memory slot, parallel port, serial
port
NPU Options 80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| External memory | J3 | CMOS battery | J10 |
| slot | | | |
|-----------------+----------+--------------------+----------|
| Serial port | J8 | Optional keyboard | J11 |
| | | connector | |
|-----------------+----------+--------------------+----------|
| Parallel port | J9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Switch | Position |
|------------------------------------+------------+----------|
| » | Monitor type select color | SW1/switch | On |
| | | 1 | |
|---+--------------------------------+------------+----------|
| | Monitor type select monochrome | SW1/switch | Off |
| | | 1 | |
|---+--------------------------------+------------+----------|
| » | NPU enabled | SW1/switch | On |
| | | 2 & 3 | |
|---+--------------------------------+------------+----------|
| | NPU disabled | SW1/switch | Off |
| | | 2 & 3 | |
|---+--------------------------------+------------+----------|
| » | NPU synchronous with CPU | SW1/switch | Off |
| | | 4 | |
|---+--------------------------------+------------+----------|
| | NPU asynchronous | SW1/switch | On |
| | | 4 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LED CONFIGURATION |
|------------------------------------------------------------|
| Red1 | Yel. | Gre. | Red2 | Item failed |
|-------+-------+-------+-------+----------------------------|
| On | On | On | On | CPU |
|-------+-------+-------+-------+----------------------------|
| On | On | On | Off | 8142 test keyboard |
|-------+-------+-------+-------+----------------------------|
| On | On | Off | On | 8254 timer 1 test |
|-------+-------+-------+-------+----------------------------|
| On | On | Off | Off | ROM CRC check |
|-------+-------+-------+-------+----------------------------|
| On | Off | On | On | CMOS RAM test |
|-------+-------+-------+-------+----------------------------|
| On | Off | On | Off | Memory refresh test |
|-------+-------+-------+-------+----------------------------|
| On | Off | Off | On | 0 - 256K RAM test |
|-------+-------+-------+-------+----------------------------|
| On | Off | Off | Off | Turbo mode test |
|-------+-------+-------+-------+----------------------------|
| Off | Off | Off | Off | Turbo parity error |
|-------+-------+-------+-------+----------------------------|
| Off | Off | Off | On | Nonturbo parity error |
|-------+-------+-------+-------+----------------------------|
| Off | On | On | On | 8259 test |
|-------+-------+-------+-------+----------------------------|
| Off | On | On | On | 8254 timer interrupt |
|-------+-------+-------+-------+----------------------------|
| Off | On | On | Off | Protected mode test |
|-------+-------+-------+-------+----------------------------|
| Off | On | Off | On | 8254 timer 2 test |
|-------+-------+-------+-------+----------------------------|
| Off | On | Off | Off | DMA test |
+------------------------------------------------------------+