|
USER CONFIGURABLE SETTINGS |
|
Function |
Jumper/Switch |
Position |
|
» |
Keyboard controller clock speed select 6MHz |
J2 |
pins 1 & 2 closed |
|
|
Keyboard controller clock speed select 12MHz |
J2 |
pins 2 & 3 closed |
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» |
NPU speed select 8MHz |
J3 |
pins 3 & 4 closed |
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|
NPU speed select 6MHz |
J3 |
pins 1 & 2 closed |
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NPU speed select 10MHz |
J3 |
pins 5 & 6 closed |
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|
NPU speed select 12MHz |
J3 |
pins 7 & 8 closed |
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» |
DRAM speed select 100ns |
J4 |
pins 3 & 4 closed |
|
|
DRAM speed select 80ns |
J4 |
pins 1 & 2 closed |
|
|
DRAM speed select 120ns |
J4 |
pins 5 & 6 closed |
|
» |
CPU speed select switchable from hardware (see below) |
J10 |
Open |
|
|
CPU speed select switchable from keyboard |
J10 |
pins 1 & 2 closed |
|
» |
Memory size select total amount installed |
J11 |
Open |
|
|
Memory size select 256KB only (for testing purposes) |
J11 |
Closed |
|
» |
Power good signal detect from power supply |
J15 |
pins 2 & 3 closed |
|
|
Power good signal detect from board |
J15 |
pins 1 & 2 closed |
|
» |
Battery type select Alkaline 4.5VDC |
J16 |
pins 1 & 2 closed |
|
|
Battery type select Lithium 6VDC |
J16 |
Open |
|
» |
DRAM wait states select zero |
SW1/4 |
On |
|
|
DRAM wait state select one |
SW1/4 |
Off |
|
» |
Monitor type select color |
SW1/5 |
On |
|
|
Monitor type select monochrome |
SW1/5 |
Off |
|
» |
Serial port 1 at 3F8-3FF using IRQ4 enabled |
SW2/1 |
On |
|
|
Serial port 1 at 3F8-3FF using IRQ4 disabled |
SW2/1 |
Off |
|
» |
Serial port 2 at 2F8-2FF using IRQ3 enabled |
SW2/2 |
On |
|
|
Serial port 2 at 2F8-2FF using IRQ3 disabled |
SW2/2 |
Off |
|
» |
Floppy drive interface enabled |
SW2/5 |
On |
|
|
Floppy drive interface disabled |
SW2/5 |
Off |
|
» |
Early address latch enabled (#EALE) signal select enabled |
SW2/7 |
Off |
|
|
Address latch enable (#BALE) signal select enabled |
SW2/7 |
On |
|
» |
Factory configured - do not alter |
SW2/8 |
N/A |