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# GENOA SYSTEMS CORPORATION
UL486
Processor 80486SX/80486DX/80486DX2
Processor Speed 16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set UMC
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Speaker | J5 |
|------------------+----------+-------------------+----------|
| Turbo LED | J2 | Power LED & | J6 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo switch | J3 | 32-bit external | S1 |
| | | memory card | |
|------------------+----------+-------------------+----------|
| Reset switch | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| ยป | Monitor type select color | JP1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP1 | pins 1 & 2 |
| | | | 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) 1 M 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 |
|-------+-----------------+-----------------+----------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|-------+-----------------+-----------------+----------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|-------+-----------------+-----------------+----------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP6 | JP7 | JP8 | JP9 | JP10 |JP11 | JP12 |JP13 |
|------+------+------+------+------+------+-----+------+-----|
| 64MB |1 & 2 |1 & 2 | Open | Open | Open |Open | Open |1 & 2|
|------+------+------+------+------+------+-----+------+-----|
|128MB |2 & 3 |1 & 2 |Closed|Closed| Open |Open |1 & 2 |2 & 3|
|------+------+------+------+------+------+-----+------+-----|
|256MB |2 & 3 |2 & 3 |Closed|Closed|Closed| JP8 |2 & 3 |1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP17 | JP18 |
|--------------------+--------------------+------------------|
| 80486SX | pins 2 & 3 closed | Open |
|--------------------+--------------------+------------------|
| 80486DX | pins 1 & 2 closed | Closed |
|--------------------+--------------------+------------------|
| 80486DX2 | pins 1 & 2 closed | Closed |
+------------------------------------------------------------+