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# ATRONICS INTERNATIONAL, INC.
486/B2
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor 20/25/33/40(internal)/50(internal)/50/66(internal)MHz
Speed
Chip Set UMC
Max. 64MB
Onboard
DRAM
Cache 32/64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O 32-bit external memory card slot
Options
NPU 4167
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J4 | 32-bit external | S1 |
| | | memory card | |
|-------------------+----------+------------------+----------|
| Turbo switch | J5 | Reset switch | W7 |
|-------------------+----------+------------------+----------|
| Speaker | J6 | Turbo LED | W11 |
|-------------------+----------+------------------+----------|
| Power LED & | J7 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | CPU speed select iOSC/1 | JPX20 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CPU speed select iOSC/2 | JPX20 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | W8 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | W8 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPERCONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 |
|--------------------+-------------------+-------------------|
| On board memory | pins 2 & 3 closed | pins 2 & 3 closed |
| used | | |
|--------------------+-------------------+-------------------|
| No on board memory | pins 1 & 2 closed | pins 1 & 2 closed |
| used | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG (U4, U8 & |
| | | | U16) |
|---------+---------------+---------------+------------------|
| 32KB | (4) 8K x 8 | NONE | (3) 16K x 4 |
|---------+---------------+---------------+------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (3) 16K x 4 |
|---------+---------------+---------------+------------------|
| 128KB | (4) 32K x 8 | NONE | (3) 16K x 4 |
|---------+---------------+---------------+------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (3) 16K x 4 |
|------------------------------------------------------------|
| Note : If more then 16MB of DRAM is being cached, an |
| additional 16K x 4 TAG chip must be installed at U12. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W1 | W2 | W3 | W4 | W5 | W10 |
|--------+--------+--------+--------+--------+-------+-------|
| 32KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 64KB | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note : Pins designated should be in the closed position, |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JPX9 | JPX11 | JPX12 | JPX13 |
|----------+------------+------------+-----------+-----------|
| 80486SX | pins 2 & 3 | pins 1 & 2 | pins 1 & | pins 1 & |
| | closed | closed | 2 closed | 2 closed |
|----------+------------+------------+-----------+-----------|
| ODP486SX | pins 1 & 2 | pins 2 & 3 | pins 2 & | pins 1 & |
| | closed | closed | 3 closed | 2 closed |
|----------+------------+------------+-----------+-----------|
| 80487SX | pins 1 & 2 | pins 2 & 3 | pins 2 & | pins 1 & |
| | closed | closed | 3 closed | 2 closed |
|----------+------------+------------+-----------+-----------|
| 80486DX | pins 2 & 3 | pins 2 & 3 | pins 2 & | pins 2 & |
| | closed | closed | 3 closed | 3 closed |
|----------+------------+------------+-----------+-----------|
| 80486DX2 | pins 2 & 3 | pins 2 & 3 | pins 2 & | pins 2 & |
| | closed | closed | 3 closed | 3 closed |
+------------------------------------------------------------+