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# WYSE TECHNOLOGY, INC.
WYSE DECISION 486GSI
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/50/66(internal)MHz
Speed
Chip Set Unidentified
Max. Onboard 64MB
DRAM
Cache 128/256KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options PS/2 mouse port, parallel port, serial ports (2),
VGA port, VGA feature connector, floppy drive
interface, IDE interface, riser slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+----------------+-----------|
| Floppy drive | CN1 | Speaker | J11 |
| interface | | | |
|--------------------+----------+----------------+-----------|
| IDE interface | CN2 | Power LED & | J12 |
| | | keylock | |
|--------------------+----------+----------------+-----------|
| VGA port | CN3 | Reset switch | J13 |
|--------------------+----------+----------------+-----------|
| Parallel port | CN4 | Chassis fan | J15 |
| | | power | |
|--------------------+----------+----------------+-----------|
| Serial port 1 | CN5 | Turbo LED | JP29 |
|--------------------+----------+----------------+-----------|
| Serial port 2 | CN6 | IDE interface | JP31 |
| | | LED | |
|--------------------+----------+----------------+-----------|
| PS/2 mouse port | CN7 | Turbo switch | JP32 |
|--------------------+----------+----------------+-----------|
| External battery | J1 | LED connector | JP38 pins |
| | | | 3 - 10 |
|--------------------+----------+----------------+-----------|
| VGA feature | J9 | Riser Card | SL1 |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | Battery type select internal | JP1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Battery type select external | JP1 | Open |
|---+---------------------------------+--------+-------------|
| | CMOS memory clear | JP1 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | VGA controller enabled | JP2 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | VGA controller disabled | JP2 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | VGA IRQ9 enabled | JP3 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | VGA IRQ9 disabled | JP3 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Speaker type select internal | JP28 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Speaker type select external | JP28 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Turbo LED enabled | JP29 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Turbo LED disabled | JP29 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Turbo switch enabled | JP32 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Turbo enabled disabled | JP32 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Parallel port enabled | JP33 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Parallel port disabled | JP33 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | IDE interface enabled | JP34 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | IDE interface disabled | JP34 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Floppy drive interface enabled | JP35 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Floppy drive interface disabled | JP35 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 1 enabled | JP36 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 1 disabled | JP36 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 2 enabled | JP37 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 2 disabled | JP37 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 37MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 49MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 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 | JP6 | JP7 | JP8 | JP9 |
|-------+-------------+------------+------------+------------|
| None | Open | Open | Open | Open |
|-------+-------------+------------+------------+------------|
| 128KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 | JP13 |
|-------------------+--------------------+-------------------|
| 80486SX | pins 2 & 3 closed | Open |
|-------------------+--------------------+-------------------|
| 80487SX | pins 1 & 2, 3 & 4 | pins 1 & 2 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| 80486DX | pins 1 & 2, 3 & 4 | pins 2 & 3 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| 80486DX2 | pins 1 & 2, 3 & 4 | pins 2 & 3 closed |
| | closed | |
|-------------------+--------------------+-------------------|
| Pentium Overdrive | pins 1 & 2, 3 & 4 | pins 2 & 3 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP14 | JP15 | JP16 |
|--------+-----------------+----------------+----------------|
| 25MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 33MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 50iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 50MHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 66iMHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (4) 256K x 4 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 4 | (4) 256K x 4 |
+------------------------------------------------------------+