LASER COMPUTER, INC.
LASER 8088 MAIN BOARD (VER. 2)
|
Processor |
8088 |
|
Processor Speed |
10MHz |
|
Chipset |
Unidentified |
|
Maximum Onboard Memory |
1664KB DRAM |
|
BIOS |
Unidentified |
|
Dimensions |
270 x 218mm |
|
I/O Options |
None |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J11 |
Power LED & keylock |
J12 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Parity enabled |
JP7 |
Pins 1 & 2 closed | |
|
Parity disabled |
JP7 |
Pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
SW1/1 |
Off |
|
|
NPU not installed |
SW1/2 |
Off |
|
NPU installed |
SW1/2 |
On | |
|
|
Factory configured - do not alter |
SW2/7 |
N/A |
|
|
Factory configured - do not alter |
SW2/8 |
N/A |
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
P2 |
Bank 3 |
P3 |
|
256KB |
(9) 41256 |
None |
None |
None |
None |
None |
|
512KB |
(9) 41256 |
(9) 41256 |
None |
None |
None |
None |
|
576KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
None |
None |
|
640KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
896KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
1152KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
1408KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
1664KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 4 |
Bank 5 |
Bank 6 |
Bank 7 |
|
256KB |
None |
None |
None |
None |
|
512KB |
None |
None |
None |
None |
|
576KB |
None |
None |
None |
None |
|
640KB |
None |
None |
None |
None |
|
896KB |
(9) 4164 |
None |
None |
None |
|
1152KB |
(9) 4164 |
(9) 4164 |
None |
None |
|
1408KB |
(9) 4164 |
(9) 4164 |
(9) 4164 |
None |
|
1664KB |
(9) 4164 |
(9) 4164 |
(9) 4164 |
(9) 4164 |
|
DRAM CONFIGURATION | ||
|
Size |
SW1/3 |
SW1/4 |
|
256KB |
On |
On |
|
512KB |
Off |
On |
|
576KB |
On |
Off |
|
640KB |
Off |
Off |
|
896KB |
Off |
Off |
|
1152KB |
Off |
Off |
|
1408KB |
Off |
Off |
|
1664KB |
Off |
Off |
|
EXPANDED MEMORY BANK 4 AND 5 ADDRESS | |||
|
Setting |
SW2/1 |
SW2/2 |
SW2/3 |
|
208h |
Off |
On |
On |
|
218h |
On |
Off |
On |
|
258h |
Off |
Off |
On |
|
268h |
On |
On |
Off |
|
2A8h |
Off |
On |
Off |
|
2B8h |
On |
Off |
Off |
|
2E8h |
Off |
Off |
Off |
|
Disabled |
On |
On |
On |
|
EXPANDED MEMORY BANK 6 AND 7 ADDRESS | |||
|
Setting |
SW2/4 |
SW2/5 |
SW2/6 |
|
208h |
Off |
On |
On |
|
218h |
On |
Off |
On |
|
258h |
Off |
Off |
On |
|
268h |
On |
On |
Off |
|
2A8h |
Off |
On |
Off |
|
2B8h |
On |
Off |
Off |
|
2E8h |
Off |
Off |
Off |
|
Disabled |
On |
On |
On |
|
FLOPPY DRIVE CONFIGURATION | ||
|
Setting |
SW1/7 |
SW1/8 |
|
1 drive attached |
On |
On |
|
2 drives attached |
Off |
On |
|
3 drives attached |
On |
Off |
|
4 drives attached |
Off |
Off |
|
MONITOR TYPE SELECTION | ||
|
Setting |
SW1/5 |
SW1/6 |
|
Monochrome |
Off |
Off |
|
CGA, 40 x 25 |
Off |
On |
|
CGA, 80 x 25 |
On |
Off |
|
EGA or no monitor |
On |
On |