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# MICROWISE, INC.
486A-33
Processor 80486SX/80487SX/80486DX
Processor Speed 20/25/33/50MHz
Chip Set SIS
Max. Onboard DRAM 32MB
Cache 32/64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| Power LED & keylock | CN1 | Reset switch | JP1 |
|-----------------------+----------+--------------+----------|
| Speaker | CN2 | Turbo switch | JP3 |
|-----------------------+----------+--------------+----------|
| External battery | CN3 | Turbo LED | JP5 |
|-----------------------+----------+--------------+----------|
| 32-bit external | J1 | | |
| memory card | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP15 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP15 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP19 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP20 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+---------------+------------+------------+----------|
| 1MB | (4) 256K x 9 | NONE | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 2MB | (4) 256K x 9 | (4) 256K x | NONE | NONE |
| | | 9 | | |
|-------+---------------+------------+------------+----------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 6MB | (4) 256K x 9 | (4) 256K x | (4) 1M x 9 | NONE |
| | | 9 | | |
|-------+---------------+------------+------------+----------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 10MB | (4) 256K x 9 | (4) 256K x | (4) 1M x 9 | (4) 1M x |
| | | 9 | | 9 |
|-------+---------------+------------+------------+----------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
|-------+---------------+------------+------------+----------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x |
| | | | | 9 |
|-------+---------------+------------+------------+----------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 18MB | (4) 256K x 9 | (4) 256K x | (4) 4M x 9 | NONE |
| | | 9 | | |
|-------+---------------+------------+------------+----------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE |
|-------+---------------+------------+------------+----------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|-------+---------------+------------+------------+----------|
| 36MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|-------+---------------+------------+------------+----------|
| 40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x |
| | | | | 9 |
|-------+---------------+------------+------------+----------|
| 48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|-------+---------------+------------+------------+----------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x |
| | | | | 9 |
|------------------------------------------------------------|
| Note:Banks 2 & 3 are used when a 32-bit external memory |
| card is installed at J1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
|Size | JP9 |JP10 |JP11 |JP12 |JP13 |JP14 |JP16 |JP17 |JP18 |
|-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
|32KB |1 & 2 |1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|
|-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
|64KB |1 & 2 |1 & 2|2 & 3|1 & 2|2 & 3|1 & 2|2 & 3|1 & 2|1 & 2|
|-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
|128KB|1 & 2 |2 & 3|2 & 3|2 & 3|2 & 3|1 & 2|1 & 2|1 & 2|2 & 3|
|-----+------+-----+-----+-----+-----+-----+-----+-----+-----|
|256KB|2 & 3 |2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP6 | JP7 | JP8 |
|---------+----------+-------------------+-------------------|
| 80486SX | Open | Open | pins 2 & 3 closed |
|---------+----------+-------------------+-------------------|
| 80487SX | Closed | pins 2 & 3 closed | pins 1 & 2 closed |
|---------+----------+-------------------+-------------------|
| 80486DX | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+