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# YOUNG MICRO SYSTEMS, INC.
VEGA 486 GREEN AIO 2VLB
Processor 80486SX/80486DX/80486DX2/80486DX4/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set Symphony
Max. Onboard 128MB
DRAM
Cache 64/128/256/512/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2), floppy drive
interface, IDE interface, parallel port, PS/2
mouse connector, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Reset switch | J1 | Serial port 2 | CN2 |
|-------------------+----------+------------------+----------|
| Speaker | J2 | IDE interface | CN3 |
|-------------------+----------+------------------+----------|
| Turbo LED | J3 | Floppy drive | CN4 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Turbo switch | J4 | PS/2 mouse | CN5 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Power LED & | J5 | Parallel port | CN6 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Resume connector | J6 | IDE interface | IJ4 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN1 | 32-bit VESA | SL1 & |
| | | Local bus slots | SL2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+----------+------------|
| » | Factory configured - do not | IJP1 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IJP2 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IJP3 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IW4/ 1 & | Open |
| | alter | 2 | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IW4/ 3 & | Open |
| | alter | 4 | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IW4/ 5 & | Open |
| | alter | 6 | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | IW4/ 7 & | Open |
| | alter | 8 | |
|---+--------------------------------+----------+------------|
| » | IDE interface enabled | IW4/ 9 & | Open |
| | | 10 | |
|---+--------------------------------+----------+------------|
| | IDE interface disabled | IW4/ 9 & | Closed |
| | | 10 | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP9 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP10 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Cache control select combined | JP16 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Cache control select separate | JP16 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Monitor type select color | JP17 | Closed |
|---+--------------------------------+----------+------------|
| | Monitor type select monochrome | JP17 | Open |
|---+--------------------------------+----------+------------|
| » | BIOS type select regular | JP18 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | BIOS type select flash EPROM | JP18 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP22 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP23 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP24 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP28 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP29 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP30 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP31 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W1 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W2 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W3 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W4 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W5 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W6 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Parallel port IRQ select IRQ7 | W11 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Parallel port IRQ select IRQ5 | W11 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | W12 | Open |
| | alter | | |
|---+--------------------------------+----------+------------|
| » | Onboard port select enabled | WT1 | Open |
|---+--------------------------------+----------+------------|
| | Onboard port select disabled | WT1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 512K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG (U1 & U2) |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (2) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (2) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (2) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (2) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JD1 | JD2 | JT1 | JT2 | JT3 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 512KB | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP4 |JP5| JP6 |JP11| P1 - |R2-1/4|
| | | | | | | | P4 | |
|---------+------+------+------+---+------+----+------+------|
| 486SX | Open | Open | Open |2 &|Closed|Open|Closed| Open |
| | | | | 3 | | | | |
|---------+------+------+------+---+------+----+------+------|
| 486SL | Open |Closed| Open |1 &|Closed|1 & |Closed|Closed|
| | | | | 2 | | 2 | | |
|---------+------+------+------+---+------+----+------+------|
| 486DX | Open | Open | Open |1 &|Closed|1 & |Closed| Open |
| | | | | 2 | | 2 | | |
|---------+------+------+------+---+------+----+------+------|
| 486DX4 | Open |Closed| Open |1 &|Closed|2 & | Open |Closed|
| | | | | 2 | | 3 | | |
|---------+------+------+------+---+------+----+------+------|
|Overdrive|Closed|Closed|Closed|1 &| Open |2 & | Open |Closed|
| | | | | 2 | | 3 | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP25 | JP26 | JP27 |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE/BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | Wait states | JP20 | JP21` |
|-----------+---------------+-------------------+------------|
| < 33MHz | 0 wait states | pins 1 & 2 closed | pins 1 & 2 |
| | | | closed |
|-----------+---------------+-------------------+------------|
| > 33MHz | 1 wait state | pins 2 & 3 closed | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Type | W14 | W15 |
|-------------------------------+--------+-------------------|
| Enhanced parallel port (EPP) | Open | pins 2 & 3 closed |
| mode | | |
|-------------------------------+--------+-------------------|
| Standard mode | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+