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 |