NCR CORPORATION
PERSONAL COMPUTER PC-8
|
Processor |
80286 (exact location unidentified) |
|
Processor Speed |
Unidentified |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
14MB (640KB on mainboard) |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
538mm x 420mm |
|
I/O Options |
None |
|
NPU Options |
80287 (exact location unidentified) |
|
CONNECTIONS | |
|
Purpose |
Location |
|
External battery |
P21 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Switch |
Position | |
|
Monitor type select monochrome |
SW1 |
On | |
|
Monitor type select color |
SW1 |
Off | |
|
|
Factory configured - do not alter |
U101 |
N/A |
|
DRAM CONFIGURATION |
|
Note: The location, orientation and chips sizes are unidentified. |
|
DRAM JUMPER CONFIGURATION | ||
|
Size |
P17 |
P18 |
|
256KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
512KB |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
640KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
DRAM CONFIGURATION |
|
Note: The orientation and chips sizes are unidentified. |
|
DRAM SWITCH CONFIGURATION | ||||||||||
|
Size |
S1/1 |
S1/2 |
S1/3 |
S1/4 |
S1/5 |
S2/1 |
S2/2 |
S2/3 |
S2/4 |
S2/5 |
|
None |
On |
On |
On |
Off |
On |
On |
On |
On |
Off |
Off |
|
512KB |
On |
On |
On |
Off |
Off |
On |
On |
Off |
On |
On |
|
1MB |
On |
On |
Off |
On |
On |
On |
On |
Off |
On |
Off |
|
1.5MB |
On |
On |
Off |
On |
Off |
On |
On |
Off |
Off |
On |
|
2MB |
On |
On |
Off |
Off |
On |
On |
On |
Off |
Off |
Off |
|
2.5MB |
On |
On |
Off |
Off |
Off |
On |
Off |
On |
On |
On |
|
3MB |
On |
Off |
On |
On |
On |
On |
Off |
On |
On |
Off |
|
3.5MB |
On |
Off |
On |
On |
Off |
On |
Off |
On |
Off |
On |
|
4MB |
On |
Off |
On |
Off |
On |
On |
Off |
On |
Off |
Off |
|
4.5MB |
On |
Off |
On |
Off |
Off |
On |
Off |
Off |
On |
On |
|
5MB |
On |
Off |
Off |
On |
On |
On |
Off |
Off |
On |
Off |
|
DRAM SWITCH CONFIGURATION (CONT) | ||||||||||
|
Size |
S1/1 |
S1/2 |
S1/3 |
S1/4 |
S1/5 |
S2/1 |
S2/2 |
S2/3 |
S2/4 |
S2/5 |
|
5.5MB |
On |
Off |
Off |
On |
Off |
On |
Off |
Off |
Off |
On |
|
6MB |
On |
Off |
Off |
Off |
On |
On |
Off |
Off |
Off |
Off |
|
6.5MB |
On |
Off |
Off |
Off |
Off |
Off |
On |
On |
On |
On |
|
7MB |
Off |
On |
On |
On |
On |
Off |
On |
On |
On |
Off |
|
7.5MB |
Off |
On |
On |
On |
Off |
Off |
On |
On |
Off |
On |
|
8MB |
Off |
On |
On |
Off |
On |
Off |
On |
On |
Off |
Off |
|
8.5MB |
Off |
On |
On |
Off |
Off |
Off |
On |
Off |
On |
On |
|
9MB |
Off |
On |
Off |
On |
On |
Off |
On |
Off |
On |
Off |
|
9.5MB |
Off |
On |
Off |
On |
Off |
Off |
On |
Off |
Off |
On |
|
10MB |
Off |
On |
Off |
Off |
On |
Off |
On |
Off |
Off |
Off |
|
10.5MB |
Off |
On |
Off |
Off |
Off |
Off |
Off |
On |
On |
On |
|
11MB |
Off |
Off |
On |
On |
On |
Off |
Off |
On |
On |
Off |
|
11.5MB |
Off |
Off |
On |
On |
Off |
Off |
Off |
On |
Off |
On |
|
12MB |
Off |
Off |
On |
Off |
On |
Off |
Off |
On |
Off |
Off |
|
12.5MB |
Off |
Off |
On |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
13MB |
Off |
Off |
Off |
On |
On |
Off |
Off |
Off |
On |
Off |
|
13.5MB |
Off |
Off |
Off |
On |
Off |
Off |
Off |
Off |
Off |
On |
|
14MB |
Off |
Off |
Off |
Off |
On |
N/A |
N/A |
N/A |
N/A |
N/A |