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# YOUNG MICRO SYTEMS, INC.
VEGA 3486S-VL
Processor 80386DX/80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor 16/20/25/33/50(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 slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------+----------+------------------------+----------|
| Speaker | J1 | Turbo LED | J4 |
|-------------+----------+------------------------+----------|
| Power LED & | J2 | Turbo switch | J5 |
| keylock | | | |
|-------------+----------+------------------------+----------|
| Reset | J3 | 32-bit VESA local bus | S1 |
| | | slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP12 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP27 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP34 | Closed |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (4) 256K x | (4) 256K x | NONE | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (4) 256K x | (4) 256K x | (4) 256K x | NONE |
| | 9 | 9 | 9 | |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 256K x |
| | 9 | 9 | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 5MB | (4) 1M x 9 | (4) 256K x | NONE | NONE |
| | | 9 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (4) 256K x | (4) 256K x | (4) 1M x 9 | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 7MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 1M x 9 |
| | 9 | 9 | 9 | |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 10MB | (4) 256K x | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 13MB | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 28MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 |
|------+-------------+-------------+------------+------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 |
|------+-------------+-------------+------------+------------|
| 48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 52MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
|------+-------------+-------------+------------+------------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (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 | JP7 | JP8 | JP9 | JP10 | JP11 |
|----------+----------+---------+---------+---------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+---------+---------+---------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+---------+---------+---------+--------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP13 | JP14 | JP15 | JP16 | JP17 |
|-------------+---------+---------+--------+--------+--------|
| 80386DX | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------+---------+---------+--------+--------+--------|
| 80486SX | 1 & 2 | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|-------------+---------+---------+--------+--------+--------|
| 80487SX | 2 & 3 | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|-------------+---------+---------+--------+--------+--------|
| 80486DX | 1 & 2 | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|-------------+---------+---------+--------+--------+--------|
| 80486DX-50 | 1 & 2 | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP18 | JP19 | JP26 | JP28 | JP29 |
|------------+---------+---------+--------+---------+--------|
| 80386DX | Closed | Open | Open | Open | 1 & 2 |
|------------+---------+---------+--------+---------+--------|
| 80486SX | Open | Open | Open | Open | 2 & 3 |
|------------+---------+---------+--------+---------+--------|
| 80487SX | Open | Open | 2 & 3 | Closed | 2 & 3 |
|------------+---------+---------+--------+---------+--------|
| 80486DX | Open | Open | 1 & 2 | Closed | 2 & 3 |
|------------+---------+---------+--------+---------+--------|
| 80486DX-50 | Open | Closed | 1 & 2 | Closed | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP30 | JP31 | JP32 | JP71 | JP76 | JP77 |
|-----------+--------+-------+-------+-------+-------+-------|
| 80386DX | 1 & 2 | 1 & 2 |Closed |Closed | Open |Closed |
|-----------+--------+-------+-------+-------+-------+-------|
| 80486SX | 2 & 3 | 2 & 3 | Open | Open |Closed | Open |
|-----------+--------+-------+-------+-------+-------+-------|
| 80487SX | 2 & 3 | 2 & 3 | Open | Open |Closed | Open |
|-----------+--------+-------+-------+-------+-------+-------|
| 80486DX | 2 & 3 | 2 & 3 | Open | Open |Closed | Open |
|-----------+--------+-------+-------+-------+-------+-------|
|80486DX-50 | 2 & 3 | 2 & 3 | Open | Open |Closed | Open |
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP4 | JP5 | JP33 |
|---------------+------------+-----------+-------------------|
| 16/20/25MHz | Open | Closed | Open |
|---------------+------------+-----------+-------------------|
| 33MHz | Open | Closed | pins 1 & 2 closed |
|---------------+------------+-----------+-------------------|
| 33MHz | Closed | Open | pins 2 & 3 closed |
|---------------+------------+-----------+-------------------|
| 50/66MHz | Open | Open | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP6 | JP20 | JP35 |
|---------------+--------------+--------------+--------------|
| 0 | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 1 | Open | Closed | Open |
+------------------------------------------------------------+