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# UNIDENTIFIED
AC 486 MODEL PGA
Processor 80486SX/80486DX/80486DX2
Processor Speed 20/25/33/50(internal)/66(internal)MHz
Chip Set ACC
Max. Onboard DRAM 32MB
Cache None
BIOS AMI
Dimensions 254mm x 236mm
I/O Options None
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Reset switch | J4 |
|------------------+----------+-------------------+----------|
| Turbo LED | J2 | Speaker | J5 |
|------------------+----------+-------------------+----------|
| Turbo switch | J3 | Power LED & | J6 |
| | | keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| ยป | Monitor type select monochrome | JP1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select color | JP1 | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | Location | JP3 | JP4 | JP5 |
|----------+----------+------------+--------+----------------|
| 80486SX | Primary | N/A | Open | pins 2 & 3 |
| | | | | closed |
|----------+----------+------------+--------+----------------|
| 80487SX | Upgrade | pins 1 & 2 | Closed | N/A |
| | | closed | | |
|----------+----------+------------+--------+----------------|
| 80486DX | Primary | N/A | Open | pins 1 & 2, 3 |
| | | | | & 4 closed |
|----------+----------+------------+--------+----------------|
| 80486DX | Upgrade | pins 2 & 3 | Closed | N/A |
| | | closed | | |
|----------+----------+------------+--------+----------------|
| 80486DX2 | Primary | N/A | Open | pins 1 & 2, 3 |
| | | | | & 4 closed |
|----------+----------+------------+--------+----------------|
| 80486DX2 | Upgrade | pins 2 & 3 | Closed | N/A |
| | | closed | | |
+------------------------------------------------------------+