UNIDENTIFIED
B158
|
Processor |
V 20 (exact location unidentified) |
|
Processor Speed |
4MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
1MB |
|
Maximum Video Memory |
None |
|
Cache |
None |
|
BIOS |
NEL |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
8087 (exact location unidentified) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Keylock |
J1 |
Turbo LED |
J4 |
|
Speaker |
J2 |
Turbo switch |
J5 |
|
Power LED |
J3 |
Reset switch |
J6 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
DRAM parity check disabled |
SWA/1 |
On | |
|
DRAM parity check enabled |
SWA/1 |
Off | |
|
|
Factory configured - do not alter |
SWA/2 |
On |
|
DRAM CONFIGURATION | |||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 2A |
Bank 3 |
Bank 3A |
Bank 4 |
|
512KB |
(9) 41256 |
(9) 41256 |
None |
None |
None |
None |
None |
|
640KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
None |
|
1MB |
None |
None |
None |
None |
None |
None |
(9) 411000 |
|
DRAM JUMPER/SWITCH CONFIGURATION | |||
|
Size |
JP1 |
SWA/3 |
SWA/4 |
|
None |
Closed |
On |
On |
|
512KB |
Closed |
Off |
On |
|
640KB |
Closed |
On |
Off |
|
1MB |
Open |
Off |
Off |
|
MONITOR SELECTION | ||
|
Setting |
SWA/5 |
SWA/6 |
|
None |
On |
On |
|
Monochrome |
Off |
Off |
|
Color 40 x 25 |
Off |
On |
|
Color 80 x 25 |
On |
Off |
|
FLOPPY DRIVE SELECTION | ||
|
Drives installed |
SWA/7 |
SWA/8 |
|
1 |
On |
On |
|
2 |
Off |
On |
|
3 |
On |
Off |
|
4 |
Off |
Off |