LASER COMPUTER, INC.
LASER 286S
Processor |
80286 (exact location unidentified) |
Processor Speed |
16MHz |
Chip Set |
Unidentified |
Maximum Onboard Memory |
4MB |
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 |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
Front panel connector |
J4 |
IDE interface |
J10 |
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 - 37Fh |
JP21 |
Pins 1 & 2 closed | |
Parallel port address select 278 - 27Fh |
JP21 |
Pins 2 & 3 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 0 |
Bank 1 |
Parity 1 |
Bank 2 |
Bank 3 |
512KB |
(4) 44256 |
(2) 41256 |
None |
None |
None |
None |
640KB |
(4) 44256 |
(2) 41256 |
(4) 4464 |
(2) 41256 |
None |
None |
1MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
None |
None |
1152KB |
(4) 44256 |
(2) 41256 |
(4) 4464 |
(2) 41256 |
(2) 256K x 9 |
None |
1.5MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
(2) 256K x 9 |
None |
1664KB |
(4) 44256 |
(2) 41256 |
(4) 4464 |
(2) 41256 |
(2) 256K x 9 |
(2) 256K x 9 |
2MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
(2) 256K x 9 |
(2) 256K x 9 |
2MB |
None |
None |
None |
None |
(2) 1M x 9 |
None |
4MB |
None |
None |
None |
None |
(2) 1M x 9 |
(2) 1M x 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 installed |
Not installed |
On |
On |
On |
Installed |
Installed |
Not installed |
On |
On |
Off |
Installed |
Installed |
Bank 0 |
On |
Off |
On |
Installed |
Installed |
Banks 0 & 1 |
On |
Off |
Off |
DRAM SWITCH (DELUXE SYSTEM) | |||||
Bank 0 |
Bank 1 |
1M SIMM |
SW2/8 |
SW2/9 |
SW2/10 |
Not installed |
Not installed |
Bank 0 |
On |
On |
On |
Not installed |
Not installed |
Banks 0 & 1 |
On |
On |
Off |
SERIAL PORT IRQ | ||||
Serial port 1 |
Serial port 2 |
JP18 |
JP19 | |
» |
IRQ4 |
IRQ3 |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
IRQ3 |
IRQ4 |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
SERIAL PORT | ||||||
Serial port 1 |
Serial port 2 |
JP20 |
JP22 |
JP25 |
JP26 | |
» |
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. |