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# LEADING TECHNOLOGY
6500SX
Processor 80386SX (exact location unknown)
Processor 16/20/25MHz
Speed
Chip Set SIS
Max. Onboard 4MB
DRAM
Cache None
BIOS AMI
Dimensions 254mm x 220mm
I/O Options Floppy drive interface, IDE interface, Game port,
parallel port, serial ports (2)
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | IDE interface | J10 |
|-------------------+----------+------------------+----------|
| Joystick port | CN2 | Floppy drive | J12 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | Speaker | J15 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | IDE interface | J32 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Front panel | J4 | Riser Card | S1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| External battery | J9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Joystick port enabled | J17 | Closed |
|---+---------------------------+---------------+------------|
| | Joystick port disabled | J17 | Open |
|---+---------------------------+---------------+------------|
| » | Floppy drive interface | J28 | Open |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | Floppy drive interface | J28 | Closed |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | IDE interface enabled | J29 | Closed |
|---+---------------------------+---------------+------------|
| | IDE interface disabled | J29 | Open |
|---+---------------------------+---------------+------------|
| » | Parity enabled | J33 | Closed |
|---+---------------------------+---------------+------------|
| | Parity disabled | J33 | Open |
|---+---------------------------+---------------+------------|
| » | NPU disabled | J40 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | NPU enabled | J40 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW2/5 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW2/6 | On |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW2/7 | Off |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (8) 44256 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 1.5MB | (8) 44256 | (2) 256K x 9 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (8) 44256 | (2) 256K x 9 | (2) 256K x 9 |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (2) 1M x 9 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW2/1 | SW2/2 | SW2/3 |SW2/4 |SW2/8 |SW2/9 |SW2/10 |
|-------+-------+-------+-------+------+------+------+-------|
| 1MB | On | On | On | On | On | On | Off |
|-------+-------+-------+-------+------+------+------+-------|
| 1.5MB | On | On | On | On | On | Off | On |
|-------+-------+-------+-------+------+------+------+-------|
| 2MB | On | On | On | On | On | Off | Off |
|-------+-------+-------+-------+------+------+------+-------|
| 2MB | On | Off | Off | On | On | On | On |
|-------+-------+-------+-------+------+------+------+-------|
| 4MB | On | Off | Off | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 (CN4) | Port 2 | J20 | J22 | J25 | J26 |
| | (CN2) | | | | |
|----------------+-----------+-------+-------+-------+-------|
| » | COM1 | COM2 | 2 & 3 | 1 & 2 | Open | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM1 | COM3 | 2 & 3 | Open | 1 & 2 | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM1 | COM4 | 2 & 3 | Open | Open | 1 & 2 |
|------+---------+-----------+-------+-------+-------+-------|
| | COM2 | COM1 | 1 & 2 | 2 & 3 | Open | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM2 | COM3 | Open | 2 & 3 | 1 & 2 | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM2 | COM4 | Open | 2 & 3 | Open | 1 & 2 |
|------+---------+-----------+-------+-------+-------+-------|
| | COM3 | COM1 | 1 & 2 | Open | 2 & 3 | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM3 | COM2 | Open | 1 & 2 | 2 & 3 | Open |
|------+---------+-----------+-------+-------+-------+-------|
| | COM3 | COM4 | Open | Open | 2 & 3 | 1 & 2 |
|------+---------+-----------+-------+-------+-------+-------|
| | COM4 | COM1 | 2 & 3 | Open | Open | 1 & 2 |
|------+---------+-----------+-------+-------+-------+-------|
| | COM4 | COM2 | Open | 1 & 2 | Open | 2 & 3 |
|------+---------+-----------+-------+-------+-------+-------|
| | COM4 | COM3 | Open | Open | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT IRQ CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | Port 2 (CN2) | J18 | J19 |
| (CN1) | | | |
|------------+--------------+-------------------+------------|
| » | IRQ4 | IRQ3 | pins 2 & 3 closed | pins 1 & 2 |
| | | | | closed |
|----+-------+--------------+-------------------+------------|
| | IRQ3 | IRQ4 | pins 1 & 2 closed | pins 2 & 3 |
| | | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT | IRQ | J16 | J21 |
|-----------+--------+-------------------+-------------------|
| » | 1 | 7 | pins 2 & 3 closed | pins 2 & 3 closed |
|---+-------+--------+-------------------+-------------------|
| | 1 | 5 | pins 2 & 3 closed | pins 1 & 2 closed |
|---+-------+--------+-------------------+-------------------|
| | 2 | 7 | pins 1 & 2 closed | pins 2 & 3 closed |
|---+-------+--------+-------------------+-------------------|
| | 2 | 5 | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+