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# YOUNG MICRO SYTEMS, INC.
VEGA 486F-VL
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set Vega
Max. Onboard DRAM 32MB
Cache 64/256/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Speaker | J1 | Turbo switch | J5 |
|---------------+----------+----------------------+----------|
| Power LED & | J2 | External battery | JP1 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Reset switch | J3 | 32-bit VESA local | S1 |
| | | bus slot | |
|---------------+----------+----------------------+----------|
| Turbo LED | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | I/O wait states select zero | JP5 | Open |
|---+----------------------------------+--------+------------|
| | I/O wait states select one | JP5 | 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) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 64KB | (8) 8K x 8 |
|----------------------------+-------------------------------|
| 256KB | (8) 32K x 8 |
|----------------------------+-------------------------------|
| 1MB | (8) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP13 | JP14 |JP15 | JP16 | JP17 |
|------+------+------+------+------+-----+------+------------|
| 64KB | Open | Open | Open | Open |1 & 2|Closed|1 & 2, 2 & 3|
|------+------+------+------+------+-----+------+------------|
|256KB | Open | Open |Closed|Closed|2 & 3| Open |1 & 2, 2 & 3|
|------+------+------+------+------+-----+------+------------|
| 1MB |Closed|Closed|Closed|Closed|2 & 3| Open | 2 & 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP8 | JP9 | JP10 |
|-----------+-------------------+--------+-------------------|
| 80486SX | Open | Open | pins 2 & 3 closed |
|-----------+-------------------+--------+-------------------|
| ODP486SX | Open | Open | pins 2 & 3 closed |
|-----------+-------------------+--------+-------------------|
| 80487SX | pins 2 & 3 closed | Closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX | pins 1 & 2 closed | Closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX2 | pins 1 & 2 closed | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP6 | JP7 |
|--------------------+-------------------+-------------------|
| 16/20/25/33MHz | open | closed |
|--------------------+-------------------+-------------------|
| 40MHz | closed | open |
|--------------------+-------------------+-------------------|
| 50MHz | closed | closed |
+------------------------------------------------------------+