LASER COMPUTER, INC.
LASER TURBO XT-2
Processor |
8088 |
Processor Speed |
Unidentified |
Chip Set |
Unidentified |
Video Chip Set |
None |
Maximum Onboard Memory |
1MB |
Maximum Video Memory |
None |
Cache |
None |
BIOS |
Unidentified |
Dimensions |
330mm x 218mm |
I/O Options |
None |
NPU Options |
8087 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Auxiliary power connector |
CN1 |
Front panel connector |
J12 |
Speaker |
J11 |
Reset switch |
JP3 |
USER CONFIGURABLE SETTINGS | |||
Function |
Label |
Position | |
Parity check enabled |
JP5 |
Pins 1 & 2 closed | |
Parity check disabled |
JP5 |
Pins 2 & 3 closed | |
» |
Factory configured - do not alter |
SW1/1 |
Off |
NPU not installed |
SW1/2 |
On | |
NPU installed |
SW1/2 |
Off | |
» |
Factory configured - do not alter |
SW1/4 |
Unidentified |
» |
Factory configured - do not alter |
SW2/4 |
Unidentified |
DRAM CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
512KB (A) |
None |
None |
None |
(16) 41256 |
512KB (B) |
None |
(16) 41256 |
None |
None |
640KB (A) |
(4) 4464 |
None |
None |
(16) 41256 |
1MB (B) |
None |
(16) 41256 |
(16) 41256 |
None |
Note: A = conventional memory. B = expanded memory. |
DRAM PARITY CONFIGURATION | ||||
Size |
U25/U41 |
U35/U40 |
U58/U59 |
U76/U77 |
512KB (A) |
(2) 41256 |
None |
None |
None |
512KB (B) |
None |
None |
(2) 41256 |
None |
640KB (A) |
(2) 41256 |
(2) 4164 |
None |
None |
1MB (B) |
None |
None |
(2) 41256 |
(2) 41256 |
Note: A = conventional memory. B = expanded memory. |
DRAM SWITCH CONFIGURATION | |
Size |
SW1/3 |
512KB |
On |
640KB |
Off |
FLOPPY DRIVE SELECTION | ||
Drives installed |
SW1/7 |
SW1/8 |
1 |
On |
On |
2 |
Off |
On |
3 |
On |
Off |
4 |
Off |
Off |
MONITOR SELECTION | ||
Type |
SW1/5 |
SW1/6 |
EGA |
On |
On |
Color (40 x 25) |
Off |
On |
Color (80 x 25) |
On |
Off |
Monochrome |
Off |
Off |
I/O PORT ADDRESS SELECTION | |||
Address |
SW2/1 |
SW2/2 |
SW2/3 |
208 |
Off |
On |
On |
218 |
On |
Off |
On |
258 |
Off |
Off |
On |
268 |
On |
On |
Off |
2A8 |
Off |
On |
Off |
2B8 |
On |
Off |
Off |
2E8 |
Off |
Off |
Off |
Expansion memory disabled |
On |
On |
On |