NCR CORPORATION
MODEL 3279-16XX PC916SX (REV. 03-92)
MODEL PC 710 KFC
|
Processor |
80386SX (exact location unidentified) |
|
Processor Speed |
16MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
None |
|
Maximum Video Memory |
None |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
Unidentified |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J2 |
Speaker |
J4 |
|
Power LED & keylock |
J3 |
Auxiliary keyboard connector |
J5 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Factory configured - do not alter |
JP3 |
Unidentified |
|
|
Monitor type select color |
S1 |
Left |
|
Monitor type select monochrome |
S1 |
Right | |
|
|
Power on frequency speed select 16MHz |
S2 |
Left |
|
Power on frequency speed select 8MHz |
S2 |
Right | |
|
|
Wait state select 4 wait states |
SW3/1 |
Off |
|
Wait state select 3 wait states |
SW3/1 |
On | |
|
|
Auto switch enabled |
SW3/2 |
Off |
|
8MHz mode enabled |
SW3/2 |
On | |
|
|
0 - 512KB enabled |
SW3/3 |
Off |
|
0 - 256KB enabled/256KB - 512KB disabled |
SW3/3 |
On | |
|
|
512KB - 1MB enabled |
SW3/4 |
Off |
|
512KB - 1MB disabled |
SW3/4 |
On | |
|
DRAM MEMORY MAPPING SELECTION | ||||||
|
External memory |
Mapping area |
SW3/5 |
SW3/6 |
SW3/7 |
SW3/8 | |
|
0MB |
Not selected |
On |
On |
On |
On | |
|
0MB |
100000H - 16000H |
Off |
On |
On |
On | |
|
1MB |
200000H - 26000H |
On |
Off |
On |
On | |
|
2MB |
300000H - 36000H |
Off |
Off |
On |
On | |
|
3MB |
400000H - 46000H |
On |
On |
Off |
On | |
|
4MB |
500000H - 56000H |
Off |
On |
Off |
On | |
|
5MB |
600000H - 66000H |
On |
Off |
Off |
On | |
|
6MB |
700000H - 76000H |
Off |
Off |
Off |
On | |
|
7MB |
800000H - 86000H |
On |
On |
On |
Off | |
|
8MB |
900000H - 96000H |
Off |
On |
On |
Off | |
|
9MB |
A00000H - A60000H |
On |
Off |
On |
Off | |
|
10MB |
B00000H - B60000H |
Off |
Off |
On |
Off | |
|
11MB |
C00000H - C60000H |
On |
On |
Off |
Off | |
|
12MB |
D00000H - D60000H |
Off |
On |
Off |
Off | |
|
13MB |
E00000H - E60000H |
On |
Off |
Off |
Off | |
|
14MB |
F00000H - F60000H |
Off |
Off |
Off |
Off | |
|
Note: The memory is located on the mainboard. | ||||||
|
WAITSTATES AT DMA TRANSFERS SELECTION | ||||
|
IOW/MEMR/MEMW |
IOR |
JP1 |
JP2 | |
|
250ns |
500ns |
Pins 2 & 3 closed |
Pins 2 & 3 closed | |
|
500ns |
750ns |
Pins 2 & 3 closed |
Pins 1 & 2 closed | |
|
750ns |
1000ns |
Pins 1 & 2 closed |
Pins 2 & 3 closed | |
|
1000ns |
1250ns |
Pins 1 & 2 closed |
Pins 1 & 2 closed | |