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# SILICON VALLEY COMPUTER, INC.
MINI386SX
Processor 80386SX
Processor Speed 16/20/25/33MHz
Chip Set ALI
Max. Onboard DRAM 16MB
Cache None
BIOS Unidentified
Dimensions 220mm X 240mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J4 | Turbo switch & | J8 |
| | | LED | |
|------------------+----------+-------------------+----------|
| Reset switch | J6 | Keylock and Power | J9 |
| | | LED | |
|------------------+----------+-------------------+----------|
| Speaker | J7 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | J5 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | NPU synchronous with CPU | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU asynchronous with CPU | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Real time clock type select 1287 | JP3 | Closed |
|---+----------------------------------+--------+------------|
| | Real time clock type select | JP3 | Open |
| | 146818 | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | JP4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parity disabled | JP6 | Closed |
|---+----------------------------------+--------+------------|
| | Parity enabled | JP6 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512K | (2) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 1M | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2M | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 4M | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8M | (2) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 16M | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| AT clock | JP1 |
|----------------------------+-------------------------------|
| 16MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 20MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 25MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ADS DELAY CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 |
|----------------------------+-------------------------------|
| 16MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 20MHz | pins 1& 2 closed |
|----------------------------+-------------------------------|
| 25MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+