NEC TECHNOLOGIES, INC.
POWERMATE 468/25E
Processor | 80486DX |
Processor Speed | 25MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 64MB |
Cache | 8/64KB |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit external memory card, floppy drive interface, external cache card, parallel port, PS/2 mouse port, serial ports (2) |
NPU Options | 4167 |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | P1 | Serial/Parallel/IO port connector | P10 |
External battery | P3 | Drive power | P12 |
LED panel | P6 | 32-bit external memory card slot | SL1 |
Floppy drive interface | P7 | External cache slot | SL2 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | Floppy drive transfer rate 500/250/300/150/125 KB/sec | 2D1 | pins 1 & 2 closed |
Floppy drive transfer rate 500/250/150 KB/sec | 2D1 | pins 2 & 3 closed | |
» | Factory configured - do not alter | 2J1 | Closed |
» | Password enabled | 5J2 | pins 2 & 3 closed |
Password disabled | 5J2 | pins 1 & 2 closed | |
» | A20 Gate select PAL | 5J3 | pins 1 & 2 closed |
A20 Gate select keyboard controller | 5J3 | pins 2 & 3 closed | |
» | Keyboard controller W/R select PAL | 5K3 | pins 1 & 2 closed |
Keyboard controller W/R select XIOWT | 5K3 | pins 2 & 3 closed | |
» | Keyboard controller input select 12MHz | 5K4 | pins 1 & 2 closed |
Keyboard controller input select 8.33MHz | 5K4 | pins 2 & 3 closed | |
STBY signal for RTC select PWREN-0 | 6K3 | pins 1 & 2 closed | |
STBY signal for RTC select PWREN+0 | 6K3 | pins 2 & 3 closed | |
» | ROM self test disabled | 8M2 | Open |
ROM self test enabled | 8M2 | Closed | |
» | Factory configured - do not alter | 9E1 | pins 2 & 3 closed |
» | Factory configured - do not alter | 9E2 | pins 2 & 3 closed |
» | RDY signal from MILK select DMY RDY | 11B2 | pins 1 & 2 closed |
RDY signal from MILK select BRDY | 11B2 | pins 2 & 3 closed | |
» | C6 mode select cache | 18F1 | Open |
C6 mode select normal | 18F1 | Closed | |
» | EISA to host write wait select 1 wait state | 18F2 | Open |
EISA to host write wait select 0 wait state | 18F2 | Closed | |
» | Monitor type select color | SW1/1 | On |
Monitor type select monochrome | SW1/1 | Off | |
» | Floppy drive interface address select primary (3F0 - 3F7h) | SW1/2 | Off |
Floppy drive interface address select secondary (370 - 377h) | SW1/2 | On | |
» | Internal floppy drive interface enabled | SW1/3 | On |
Internal floppy drive interface disabled | SW1/3 | Off | |
» | COM2 enabled | SW1/4 | On |
COM2 disabled | SW1/4 | Off | |
» | COM1 enabled | SW1/5 | On |
COM1 disabled | SW1/5 | Off | |
» | Parallel port enabled | SW1/6 | On |
Parallel port disabled | SW1/6 | Off | |
» | NPU enabled | SW1/7 | On |
NPU disabled | SW1/7 | Off | |
» | IRQ 12 select mouse | SW1/8 | On |
IRQ 12 select other | SW1/8 | Off | |
» | Base memory select 640KB | SW1/9 | Off |
Base memory select 512KB | SW1/9 | On | |
» | Factory configured - do not alter | SW1/10 | On |
TEST MODE CONFIGURATION | |
Test Mode | TEST |
Off | Out |
On | In |
CPU SELF TEST CONFIGURATION | ||
CPU testing | 4D1 | 21D1 |
Disabled | pins 2 & 3 closed | pins 1 & 2 closed |
Enabled | pins 1 & 2 closed | pins 2 & 3 closed |
EISA TO HOST READ WAIT STATE CONFIGURATION | ||
Total Wait States | 18F3 (bit 0) | 19F1 (bit 1) |
0 | Closed | Closed |
1 | Open | Closed |
2 | Closed | Open |
3 | Open | Open |