NCR CORPORATION
MODEL 3386-6XXX PC925/PC386
Processor |
80386 |
Processor Speed |
25MHz |
Chip Set |
Unidentified |
Video Chip Set |
None |
Maximum Onboard Memory |
16MB (8MB on external memory card) |
Maximum Video Memory |
None |
Cache |
None |
BIOS |
Unidentified |
Dimensions |
355mm x 304mm |
I/O Options |
External memory card |
NPU Options |
80387 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Turbo LED |
J1 |
External battery |
J9 |
Speaker |
J7 |
External memory card |
SL1 |
Power LED & keylock |
J8 |
USER CONFIGURABLE SETTINGS | |||
Function |
Label |
Position | |
Jumper not used |
J2 |
N/A | |
» |
BIOS type select 27256 |
J4 |
Pins 1 & 2 closed |
BIOS type select 27128 |
J4 |
Pins 2 & 3 closed | |
» |
NPU installed |
J5 |
Pins 1 & 2 closed |
NPU not installed |
J5 |
Pins 2 & 3 closed | |
» |
Manufacturing diagnostics loop disabled |
SW/1 |
Off |
Manufacturing diagnostics loop enabled |
SW/1 |
On | |
Monitor type select color |
SW/2 |
On | |
Monitor type select monochrome |
SW/2 |
Off |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
4MB |
411000 |
None |
8MB |
411000 |
(4) 1M x 9 |
Note: The location of banks 0 & 1 are unidentified. The number of chips for bank 0 are unidentified. |
DRAM JUMPER CONFIGURATION | |
Size |
J27 |
4MB |
Pins 1 & 2, 3 & 4 closed |
8MB |
Pins 2 & 3, 4 & 5 closed |
MISCELLANEOUS TECHINCAL NOTE |
The location of all pin 1s are unidentified. |