TEXT View Source
# YOUNG MICRO SYSTEMS, INC.
VS486F
Processor 80486SX/80486DX/80486DX2
Processor Speed 25/33/40/50(internal)/66(internal)MHz
Chip Set Symphony
Max. Onboard DRAM 32MB
Cache 64/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Speaker | CN1 | Turbo LED | CN4 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | CN2 | Turbo switch | CN5 |
|---------------------+----------+----------------+----------|
| Reset switch | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+----------------------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|----------------------------------------------------------------------------|
| Type | JP11 | JP10 | JP9 | JP8 | JP7 | JP6 | JP5 | JP4 | JP3 |JP2 |
|--------+------+------+------+------+------+------+------+------+------+----|
|80486SX |Closed| Open | Open | Open | Open |Closed|Closed| Open |Closed|Open|
|--------+------+------+------+------+------+------+------+------+------+----|
|80486DX | Open |Closed|Closed|Closed|Closed| Open |Closed|Closed|Closed|Open|
|--------+------+------+------+------+------+------+------+------+------+----|
|80486DX2|Closed| Open | Open | Open |Closed| Open |Closed|Closed|Closed|Open|
+----------------------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURABLE |
|------------------------------------------------------------|
| Size | Cache | TAG |
|------------------+--------------------+--------------------|
| 64KB | (8) 8K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 8K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP17 | JP16 | JP15 | JP14 | JP13 | JP12 |
|-------+--------+--------+--------+--------+--------+-------|
| 64KB | Closed | Open | Closed | Open | Closed | Open |
|-------+--------+--------+--------+--------+--------+-------|
| 256KB | Open | Closed | Open | Closed | Open |Closed |
+------------------------------------------------------------+