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 |