HEDAKA
HED-918
Processor | 8088/V20 |
Processor Speed | 4.77/10MHz |
Chip Set | None |
Max. Onboard DRAM | 640KB |
Cache | None |
BIOS | AMI |
Dimensions | 217mm x 166mm |
I/O Options | None |
NPU Options | 8087 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED | CN2 | Turbo LED | CN6 |
Speaker | CN3 | External battery | CN7A |
Reset switch | CN4 | Keylock | CN8 |
Turbo switch | CN5 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | CPU type select Intel 8088 | JP2 | pins 1 & 2 closed |
CPU type select NEC V-20 | JP2 | pins 2 & 3 closed | |
» | Factory configured - do not alter | SW1/1 | Off |
» | NPU disabled | SW1/2 | On |
NPU enabled | SW1/2 | Off |
DRAM CONFIGURATION | ||
Size | 44256 Chips | 411000 Chips |
0KB | NONE | NONE |
128KB | U7 | NONE |
256KB | U6 & U7 | NONE |
384KB | U5, U6 & U7 | NONE |
512KB | U4, U5, U6 & U7 | NONE |
512KB | NONE | U4, U5, U6 & U7 |
640KB | U3, U4, U5, U6 & U7 | NONE |
640KB | U3 | U4, U5, U6 & U7 |
DRAM JUMPER/SWITCH CONFIGURATION | |||
Size | JP1 | SW1/3 | SW1/4 |
0KB | pins 1 & 2 closed | On | On |
128KB | pins 1 & 2 closed | Off | On |
256KB | pins 1 & 2 closed | Off | On |
384KB | pins 1 & 2 closed | Off | On |
512KB | pins 1 & 2 closed | Off | On |
512KB | pins 2 & 3 closed | Off | On |
640KB | pins 1 & 2 closed | On | Off |
640KB | pins 2 & 3 closed | On | Off |
FLOPPY DRIVE CONFIGURATION | ||
Drives installed | SW1/7 | SW1/8 |
1 | On | On |
2 | Off | On |
3 | On | Off |
4 | Off | Off |
MONITOR CONFIGURATION | ||
Type | SW1/3 | SW1/4 |
None | On | On |
40 x 25 color | Off | On |
80 x 25 color | On | Off |
Monochrome | Off | Off |