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 |