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# ELITEGROUP COMPUTER SYSTEMS, INC.
UM 486V AIO
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/50/66(internal)MHz
Speed
Chip Set UMC
Max. Onboard 32MB
DRAM
Cache 64/128/256KB
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 |
|------------------+----------+-------------------+----------|
| External battery | J1 | Turbo LED | J10 |
|------------------+----------+-------------------+----------|
| Game port | J2 | Turbo switch | J11 |
|------------------+----------+-------------------+----------|
| Parallel port | J4 | Reset switch | J12 |
|------------------+----------+-------------------+----------|
| Serial port 1 | J5 | Speaker | J13 |
|------------------+----------+-------------------+----------|
| Serial port 2 | J6 | Power LED & | J14 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Floppy drive | J8 | IDE LED connector | JP12 |
| interface | | | |
|------------------+----------+-------------------+----------|
| IDE interface | J9 | 32-bit VESA Local | S1 & S2 |
| connector | | bus slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | Game port enabled | JP1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Game port disabled | JP1 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Floppy drive interface enabled | JP6 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Floppy drive interface disabled | JP6 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Monitor type select color | JP13 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Monitor type select monochrome | JP13 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 (J5) | Port 2 | JP3 | JP7 | JP8 | JP9 |
| | (J6) | | | | |
|--------------+----------+--------+--------+--------+-------|
| » | COM1 | COM2 | pins 1 | pins 1 | pins 1 | pins |
| | | | & 2 | & 2 | & 2 | 1 & 2 |
|---+----------+----------+--------+--------+--------+-------|
| | COM1 | Disabled | pins 2 | N/A | pins 1 | pins |
| | | | & 3 | | & 2 | 1 & 2 |
|---+----------+----------+--------+--------+--------+-------|
| | Disabled | COM2 | pins 1 | pins 1 | N/A | pins |
| | | | & 2 | & 2 | | 2 & 3 |
|---+----------+----------+--------+--------+--------+-------|
| | COM3 | COM4 | pins 1 | pins 2 | pins 2 | pins |
| | | | & 2 | & 3 | & 3 | 1 & 2 |
|---+----------+----------+--------+--------+--------+-------|
| | COM3 | Disabled | pins 2 | N/A | pins 2 | pins |
| | | | & 3 | | & 3 | 1 & 2 |
|---+----------+----------+--------+--------+--------+-------|
| | Disabled | COM4 | pins 1 | pins 2 | N/A | pins |
| | | | & 2 | & 3 | | 2 & 3 |
|---+----------+----------+--------+--------+--------+-------|
| | Disabled | Disabled | pins 2 | N/A | N/A | pins |
| | | | & 3 | | | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port | LPT | JP2 | JP4 |
|------------+-------+-------------------+-------------------|
| Enabled | LPT2 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------+-------+-------------------+-------------------|
| Disabled | LPT3 | pins 2 & 3 closed | 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 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP22 | JP23 | JP27 | JP28 |
|-------+-----------------+--------+--------+----------------|
| 64KB | pins 1 & 2 | Open | Open | pins 1 & 2 |
| | closed | | | closed |
|-------+-----------------+--------+--------+----------------|
| 128KB | pins 2 & 3 | Open | Closed | pins 2 & 3 |
| | closed | | | closed |
|-------+-----------------+--------+--------+----------------|
| 256KB | pins 1 & 2 | Closed | Closed | pins 2 & 3 |
| | closed | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP24 | JP25 | JP26 |
|-----------------+------+------------------+----------------|
| 80486SX | N/A | pins 2 & 3 | Open |
| | | closed | |
|-----------------+------+------------------+----------------|
| 80486SX (PQFP) | Open | N/A | N/A |
|-----------------+------+------------------+----------------|
| 80487SX | N/A | pins 1 & 2 and 3 | pins 2 & 3 |
| | | & 4 | closed |
|-----------------+------+------------------+----------------|
| 80486DX | N/A | pins 1 & 2 and 3 | pins 1 & 2 |
| | | & 4 | closed |
|-----------------+------+------------------+----------------|
| 80486DX2 | N/A | pins 1 & 2 and 3 | pins 1 & 2 |
| | | & 4 | closed |
|-----------------+------+------------------+----------------|
| Pentium | N/A | pins 1 & 2 and 3 | pins 2 & 3 |
| Overdrive | | & 4 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP18 | JP19 | JP20 | JP21 |
|------------+------------+------------+----------+----------|
| 25MHz | Closed | Closed | Open | Open |
|------------+------------+------------+----------+----------|
| 33MHz | Open | Closed | Open | Open |
|------------+------------+------------+----------+----------|
| 50i MHz | Closed | Closed | Open | Open |
|------------+------------+------------+----------+----------|
| 50MHz | Open | Open | Open | Open |
|------------+------------+------------+----------+----------|
| 66i MHz | Open | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE/BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | Wait states | JP15 | JP16 |
|---------------+---------------+--------------+-------------|
| £ 33MHz | 0 wait states | Open | Open |
|---------------+---------------+--------------+-------------|
| > 33MHz | 1 wait state | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP5 | JP10 |
|------------------+--------------------+--------------------|
| Enabled | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+