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# LASER COMPUTER, INC.
LASER 286S
Processor 80286 (exact location unidentified)
Processor Speed 16MHz
Chip Set Unidentified
Maximum Onboard 4MB
Memory
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, game port, IDE
interface, parallel port, serial ports (2),
riser slot
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-------------------+-------+------------------------+-------|
| Front panel | J4 | IDE interface | J10 |
| connector | | | |
|-------------------+-------+------------------------+-------|
| Parallel port | J5 | Floppy drive interface | J12 |
|-------------------+-------+------------------------+-------|
| Game port | J6 | Speaker | J15 |
|-------------------+-------+------------------------+-------|
| Serial port 2 | J7 | IDE interface LED | JP29 |
|-------------------+-------+------------------------+-------|
| Serial port 1 | J8 | Riser slot | SL1 |
|-------------------+-------+------------------------+-------|
| External battery | J9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|---------------------------------------+-------+------------|
| | Parallel port IRQ select IRQ5 | JP16 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Parallel port IRQ select IRQ7 | JP16 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Game port enabled | JP17 | Closed |
|---+-----------------------------------+-------+------------|
| | Game port disabled | JP17 | Open |
|---+-----------------------------------+-------+------------|
| | Parallel port address select 378 | JP21 | Pins 1 & 2 |
| | - 37Fh | | closed |
|---+-----------------------------------+-------+------------|
| | Parallel port address select 278 | JP21 | Pins 2 & 3 |
| | - 27Fh | | closed |
|---+-----------------------------------+-------+------------|
| | IDE interface enabled | JP28 | Closed |
|---+-----------------------------------+-------+------------|
| | IDE interface disabled | JP28 | Open |
|---+-----------------------------------+-------+------------|
| | Floppy drive interface enabled | JP33 | Open |
|---+-----------------------------------+-------+------------|
| | Floppy drive interface disabled | JP33 | Closed |
|---+-----------------------------------+-------+------------|
| | Parity enabled | JP34 | Closed |
|---+-----------------------------------+-------+------------|
| | Parity disabled | JP34 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | SW2/4 | N/A |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | SW2/5 | N/A |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | SW2/6 | N/A |
|---+-----------------------------------+-------+------------|
| | Wait state select 0 wait states | SW2/7 | Off |
|---+-----------------------------------+-------+------------|
| | Wait state select 1 wait state | SW2/7 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Parity | Bank 1 | Parity | Bank | Bank |
| | | 0 | | 1 | 2 | 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | (4) | (2) | None | None | None | None |
| | 44256 | 41256 | | | | |
|--------+--------+--------+--------+--------+-------+-------|
| 640KB | (4) | (2) | (4) | (2) | None | None |
| | 44256 | 41256 | 4464 | 41256 | | |
|--------+--------+--------+--------+--------+-------+-------|
| 1MB | (4) | (2) | (4) | (2) | None | None |
| | 44256 | 41256 | 44256 | 41256 | | |
|--------+--------+--------+--------+--------+-------+-------|
| 1152KB | (4) | (2) | (4) | (2) | (2) | None |
| | 44256 | 41256 | 4464 | 41256 | 256K | |
| | | | | | x 9 | |
|--------+--------+--------+--------+--------+-------+-------|
| 1.5MB | (4) | (2) | (4) | (2) | (2) | None |
| | 44256 | 41256 | 44256 | 41256 | 256K | |
| | | | | | x 9 | |
|--------+--------+--------+--------+--------+-------+-------|
| 1664KB | (4) | (2) | (4) | (2) | (2) | (2) |
| | 44256 | 41256 | 4464 | 41256 | 256K | 256K |
| | | | | | x 9 | x 9 |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | (4) | (2) | (4) | (2) | (2) | (2) |
| | 44256 | 41256 | 44256 | 41256 | 256K | 256K |
| | | | | | x 9 | x 9 |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | None | None | None | None | (2) | None |
| | | | | | 1M x | |
| | | | | | 9 | |
|--------+--------+--------+--------+--------+-------+-------|
| 4MB | None | None | None | None | (2) | (2) |
| | | | | | 1M x | 1M x |
| | | | | | 9 | 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH |
|------------------------------------------------------------|
| Setting | SW2/1 |
|-------------------------------------------+----------------|
| 4464 installed in Bank 1 | Off |
|-------------------------------------------+----------------|
| 4464 not installed in Bank 1 | On |
|------------------------------------------------------------|
| Note: Economic system uses DIP & SIMM memory and Deluxe |
| system uses 1M x 9 SIMM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH |
|------------------------------------------------------------|
| Setting | SW2/2 | SW2/3 |
|----------------------------+---------------+---------------|
| Economic system | On | On |
|----------------------------+---------------+---------------|
| Deluxe system | Off | Off |
|------------------------------------------------------------|
| Note: Economic system uses DIP & SIMM memory and Deluxe |
| system uses 1M x 9 SIMM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH (ECONOMIC SYSTEM) |
|------------------------------------------------------------|
| Bank 0 | Bank 1 | 256K SIMM | SW2/8 | SW2/9 | SW2/10 |
|-----------+-----------+-----------+-------+-------+--------|
| Installed | Not | Not | On | On | On |
| | installed | installed | | | |
|-----------+-----------+-----------+-------+-------+--------|
| Installed | Installed | Not | On | On | Off |
| | | installed | | | |
|-----------+-----------+-----------+-------+-------+--------|
| Installed | Installed | Bank 0 | On | Off | On |
|-----------+-----------+-----------+-------+-------+--------|
| Installed | Installed | Banks 0 & | On | Off | Off |
| | | 1 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH (DELUXE SYSTEM) |
|------------------------------------------------------------|
| Bank 0 | Bank 1 | 1M SIMM | SW2/8 | SW2/9 | SW2/10 |
|------------+-----------+----------+-------+-------+--------|
| Not | Not | Bank 0 | On | On | On |
| installed | installed | | | | |
|------------+-----------+----------+-------+-------+--------|
| Not | Not | Banks 0 | On | On | Off |
| installed | installed | & 1 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT IRQ |
|------------------------------------------------------------|
| Serial | Serial port 2 | JP18 | JP19 |
| port 1 | | | |
|-----------+---------------+-------------------+------------|
| » | IRQ4 | IRQ3 | Pins 2 & 3 closed | Pins 1 & 2 |
| | | | | closed |
|---+-------+---------------+-------------------+------------|
| | IRQ3 | IRQ4 | Pins 1 & 2 closed | Pins 2 & 3 |
| | | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT |
|------------------------------------------------------------|
| Serial port | Serial port | JP20 | JP22 | JP25 | JP26 |
| 1 | 2 | | | | |
|-------------+--------------+-------+-------+-------+-------|
| » | COM1 | COM2 | 1 & 2 | 2 & 3 | N/A | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM1 | COM3 | 1 & 2 | N/A | 2 & 3 | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM1 | COM4 | 1 & 2 | N/A | N/A | 2 & 3 |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM2 | COM1 | 2 & 3 | 1 & 2 | N/A | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM2 | COM3 | N/A | 1 & 2 | 2 & 3 | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM2 | COM4 | N/A | 1 & 2 | N/A | 2 & 3 |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM3 | COM1 | 2 & 3 | N/A | 1 & 2 | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM3 | COM2 | N/A | 2 & 3 | 1 & 2 | N/A |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM3 | COM4 | N/A | N/A | 1 & 2 | 2 & 3 |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM4 | COM1 | 2 & 3 | N/A | N/A | 1 & 2 |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM4 | COM2 | N/A | 2 & 3 | N/A | 1 & 2 |
|-----+-------+--------------+-------+-------+-------+-------|
| | COM4 | COM3 | N/A | N/A | 2 & 3 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+