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 |