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# MICRO EXPRESS, INC.
FOREX 386/486
Processor 80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2
Processor 20/25/33/40/50(internal)/66(internal)MHz
Speed
Chip Set Forex
Max. Onboard 32MB
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | JP2 | Turbo switch | JP15 |
|---------------------+----------+----------------+----------|
| Reset switch | JP8 | Turbo LED | JP16 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP14 | Speaker | JP17 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Parity check enabled | JP5 | Closed |
|---+------------------------------------+--------+----------|
| | Parity check disabled | JP5 | Open |
|---+------------------------------------+--------+----------|
| | Monitor type select color | JP6 | Open |
|---+------------------------------------+--------+----------|
| | Monitor type select monochrome | JP6 | Closed |
|---+------------------------------------+--------+----------|
| » | Factory configured - do not alter | JP19 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG (U26) | TAG (U42) |
|-------+-------------+------------+------------+------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | NONE |
|-------+-------------+------------+------------+------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | NONE |
|-------+-------------+------------+------------+------------|
| 256KB | (4) 32K x 8 | (4) 32K x | (1) 8K x 8 | (1) 8K x 8 |
| | | 8 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP8A | JP8B | JP8C | JP8D | JP8E | JP8F |
|--------+--------+--------+--------+--------+-------+-------|
| 64KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W1 & W2 |
|----------+-------------------------------------------------|
| 80386DX | 2 & 3, 5 & 6, 8 & 9,11 & 12, 14 & 15, 17 & 18, |
| | and 20 & 21 |
|----------+-------------------------------------------------|
| 80486DLC | 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, 16 & 17, |
| | and 19 & 20 |
|----------+-------------------------------------------------|
| 80486SX | 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, 16 & 17, |
| | and 19 & 20 |
|----------+-------------------------------------------------|
| 80487SX | 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, 16 & 17, |
| | and 19 & 20 |
|----------+-------------------------------------------------|
| 80486DX | 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, 16 & 17, |
| | and 19 & 20 |
|----------+-------------------------------------------------|
| 80486DX2 | 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, 16 & 17, |
| | and 19 & 20 |
|------------------------------------------------------------|
| Notes:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP12 | JP13 | JP30 |
|----------+----------------+----------------+---------------|
| 80386DX | N/A | N/A | N/A |
|----------+----------------+----------------+---------------|
| 80486DLC | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486SX | pins 2 & 3 | pins 2 & 3 | N/A |
| | closed | closed | |
|----------+----------------+----------------+---------------|
| 80487SX | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+