NEC TECHNOLOGIES, INC.
APC IV SERIES (G9YAN)
Processor | 80286 (exact location unidentified) |
Processor Speed | 6/8MHz |
Chip Set | Unidentified |
Maximum Onboard Memory | 10MB (on external memory cards) |
Cache | None |
BIOS | Unidentified |
Dimensions | 355mm x 305mm |
I/O Options | Floppy drive interface, parallel port, serial ports (2) |
NPU Options | 80287 (exact location unidentified) |
CONNECTIONS | |||
Function | Label | Function | Label |
Serial port 1 | COM1 | Indicator panel | P4 |
Serial port 2 | COM2 | Parallel port | P5 |
Speaker | P1 | Floppy drive interface | P9 |
External battery | P3 | Indicator panel | P10 |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | ROM area reserved on I/O channel | 5N2 | Pins 3 & 6, 4 & 5 closed |
APC IV ROM at location 4K, 4M enabled | 5N2 | Pins 1 & 8, 2 & 7 closed | |
» | BIOS type select 27256 | 6N1 | Pins 3 & 6, 4 & 5 closed |
BIOS type select 27128 | 6N1 | Pins 1 & 8, 2 & 7 closed | |
» | Factory configured - do not alter | 14D/3 | Off |
» | Parallel port enabled | 14D/4 | On |
Parallel port disabled | 14D/4 | Off | |
» | Serial port channel 1 enabled | 14D/5 | On |
Serial port channel 1 disabled | 14D/5 | Off | |
» | Serial port channel 2 enabled | 14D/6 | On |
Serial port channel 2 disabled | 14D/6 | Off | |
» | Channel 1 = COM1/channel 2 = COM2 | 14D/7 | On |
Channel 1 = COM2/channel 2 = COM1 | 14D/7 | Off | |
» | Monitor type select color | 14D/10 | On |
Monitor type select monochrome | 14D/10 | Off | |
» | Factory configured - do not alter | 21D/1 | On |
» | Factory configured - do not alter | 21D/2 | On |
» | Factory configured - do not alter | 21D/3 | On |
» | Factory configured - do not alter | 21D/4 | On |
» | Factory configured - do not alter | 21D/5 | On |
» | ROM type select IBM | 21D/6 | On |
ROM type select APC | 21D/6 | Off |
DRAM |
Note: The orientation and location of the DRAM is unidentified. |
DRAM JUMPER | ||
Bank 0 | Bank 0 | 18K2 |
256KB | 64KB | Pins 3 & 4 closed |
256KB | None | Pins 1 & 2 closed |
256KB | 256KB | Open |
SERIAL PORT | ||||
Setting | 14D/1 | 14D/2 | 14D/8 | 14D/9 |
RS-232 enabled | On | Off | On | Off |
RS-232 disabled | Off | On | Off | On |
I/O WAIT | |
Setting | 22H1 |
Normal operation 8-bit I/O cycle with 4 waits | Pins 3 & 10, 4 & 9 closed |
3 wait I/O cycle with I/O address between 000 & 0FF. | Pins 2 & 11, 4 & 9 closed |
2 wait I/O cycle with I/O address between 000 & 0FF. | Pins 3 & 10, 5 & 8 closed |
Note: Pins 6 & 7 open for normal operation. Close only for early detection or RAS & ALE signals. Pins 1 & 12 open for normal operation (1 wait state). Close only for 0 wait states. |
DRAM |
Note: The orientation and chip sizes are unidentified. |
MEMORY CARD SWITCHES | |||||
Expansion cards installed | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 |
1 | Off | Off | Off | On | Off |
2 | Off | Off | On | On | Off |
3 | Off | On | Off | On | Off |
4 | Off | On | On | On | Off |
5 | On | Off | Off | On | Off |
MEMORY CARD SWITCHES (CON’T) | |||||
Expansion cards installed | SW1/6 | SW1/7 | SW1/8 | SW1/9 | SW1/10 |
1 | Off | Off | Off | On | On |
2 | Off | Off | On | On | On |
3 | Off | On | Off | On | On |
4 | Off | On | On | On | On |
5 | On | Off | Off | On | On |
MEMORY CARD SWITCHES (CON’T) | |||||
Expansion cards installed | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 |
1 | Off | Off | On | Off | Off |
2 | Off | On | Off | Off | Off |
3 | Off | On | On | Off | Off |
4 | On | Off | Off | Off | Off |
5 | On | Off | On | Off | Off |
MEMORY CARD SWITCHES (CON’T) | |||||
Expansion cards installed | SW2/6 | SW2/7 | SW2/8 | SW2/9 | SW2/10 |
1 | Off | Off | On | Off | On |
2 | Off | On | Off | Off | On |
3 | Off | On | On | Off | On |
4 | On | Off | Off | Off | On |
5 | On | Off | On | Off | On |
MISCELLANEOUS TECHNICAL NOTE |
The location of pin 1 on all jumpers is unidentified. |