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# CAF TECHNOLOGY, INC.
CAF I421
Processor 80486SX/80487SX/80486DX
Processor Speed 20/33MHz
Chip Set UMC
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J4 | Power LED & | J7 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo switch | J5 | Reset switch | W7 |
|------------------+----------+-------------------+----------|
| Speaker | J6 | Turbo LED | W11 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | J8 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | W8 | Open |
|---+----------------------------------+--------+------------|
| | Monitor type select color | W8 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W10 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W20 | pins 2 & 3 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256KB x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256KB x 9 | (4) 256KB x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1MBx 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 256KB x 9 | (4) 1MBx 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1MBx 9 | (4) 1MBx 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4MB x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1MBx 9 | (4) 4MB x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4MB x 9 | (4) 4MB x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W1 | W2 | W3 | W4 | W5 |
|----------+----------+----------+---------+--------+--------|
| 64KB | Open | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W12 | W13 | W14 | W15 |
|---------+-------------------+--------+------------+--------|
| 80486SX | Open | Open | pins 2 & 3 | Closed |
| | | | closed | |
|---------+-------------------+--------+------------+--------|
| 80487SX | pins 2 & 3 closed | Closed | pins 1 & 2 | Open |
| | | | closed | |
|---------+-------------------+--------+------------+--------|
| 80486DX | pins 1 & 2 closed | Closed | pins 1 & 2 | Open |
| | | | closed | |
+------------------------------------------------------------+