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# YOUNG MICRO SYSTEMS, INC.
VEGA 3486AIO-2VL
Processor 80386DX/80486SX/80486DX/ODP486SX/80486DX2/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set Symphony
Max. Onboard 64MB
DRAM
Cache 64/256/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2), floppy drive
interface, game port, IDE interface, parallel
port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Speaker | CN1 | Game interface | J19 |
|-------------------+----------+------------------+----------|
| Power LED & | CN2 | Parallel port | J20 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Reset switch | CN3 | IDE interface | J21 |
|-------------------+----------+------------------+----------|
| Turbo LED | CN4 | Serial port 1 | J22 |
|-------------------+----------+------------------+----------|
| Turbo switch | CN5 | Serial port 2 | J23 |
|-------------------+----------+------------------+----------|
| External battery | J2 | 32-bit VESA | SL1 & |
| | | Local bus slots | SL2 |
|-------------------+----------+------------------+----------|
| Floppy drive | J18 | | |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | J3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | J3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JA1 | Closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JA1 | Open |
|---+----------------------------------+--------+------------|
| » | Battery type select internal | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | BIOS type select Flash | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select normal | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Cache wait state select 1 wait | JP11 | Open |
| | state | | |
|---+----------------------------------+--------+------------|
| | Cache wait state select 0 wait | JP11 | Closed |
| | states | | |
|---+----------------------------------+--------+------------|
| » | VESA sample select T2 | JP12 | Open |
|---+----------------------------------+--------+------------|
| | VESA sample select T3 | JP12 | Closed |
|---+----------------------------------+--------+------------|
| » | Cache burst select <=33MHz | JP13 | Open |
|---+----------------------------------+--------+------------|
| | Cache burst select >33MHz | JP13 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP32 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ5 | W7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ7 | W7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | W12 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | W12 | pins 2 & 3 |
| | | | 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) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 64KB | (8) 8K x 8 |
|----------------------------+-------------------------------|
| 256KB | (8) 32K x 8 |
|----------------------------+-------------------------------|
| 1MB | (8) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP27 | JP28 | JP29 | JP30 | JP31 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 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 | JP6 | JP9 | JP10 | JP17 |JP18|JP33|JP34|JP35|JP36|JP37|
|-----+------+------+------+------+----+----+----+----+----+----|
|80386| Open | Open |Closed|Closed|1 & |1 & |1 & |2 & |2 & |2 & |
| | | | | | 2 | 2 | 2 | 3 | 3 | 3 |
|-----+------+------+------+------+----+----+----+----+----+----|
|80486|Closed|Closed| Open | Open |2 & |2 & |2 & |1 & |1 & |1 & |
| | | | | | 3 | 3 | 3 | 2 | 2 | 2 |
|---------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP24 | JP25 | JP26 |
|--------------+-------------------+------------+------------|
| 80486SX | pins 2 & 3 closed | Open | Open |
|--------------+-------------------+------------+------------|
| 80486DX | pins 1 & 2 closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 | JP5 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 40MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | W1 | W2 |
|------------------+--------------------+--------------------|
| COM1 (3F8) | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM2 (2F8) | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| COM3 (2E8) | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| Port 2 | W3 | W5 |
|------------------+--------------------+--------------------|
| COM1 (3F8) | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM2 (2F8) | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| COM4 (2E8) | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | W11 |
|----------------------------+-------------------------------|
| IRQ3 | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ4 | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT CONFIGURATION |
|------------------------------------------------------------|
| Port 2 | W8 |
|----------------------------+-------------------------------|
| IRQ4 | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ3 | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | W6 | W9 |
|------------------+--------------------+--------------------|
| LPT1 (378) | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| LPT2 (278) | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| LPT3 (3BC) | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE INTERFACE CONFIGURATION |
|------------------------------------------------------------|
| Setting | W4 | W10 |
|--------------------+------------------+--------------------|
| Enabled | Closed | pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| Disabled | Open | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP15 |
|-------------------------------+----------------------------|
| <=33MHz | Closed |
|-------------------------------+----------------------------|
| > 33MHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP16 |
|-------------------------------+----------------------------|
| 0 wait states | Closed |
|-------------------------------+----------------------------|
| 1 wait state | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PHASE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP8 | JP14 |
|--------------------+--------------------+------------------|
| 1X | pins 2 & 3 closed | Closed |
|--------------------+--------------------+------------------|
| 2X | pins 1 & 2 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA PHASE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP7 | JP7A |
|------------------+--------------------+--------------------|
| 1X | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 2X | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+