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.  | ||||||