Mitsubishi Electric Apricot LS series Owner's Handbook Manual page 42

On-board video disabling (J1)
Processor multiplier (J5 to J8)
Audio DSP (J9) (option)
Audio disabling (J10)
Power Mode light colour (J11)
M o t h e r b o a r d f e a t u r e s a n d u p g r a d e s
If you install a video adapter expansion card, the computer should
automatically detect this and disable the on-board video adapter. If
for some reason this does not happen, and you experience problems
with a newly-fitted card, you can manually disable the on-board
video adapter by moving jumper J1 from position 2-3 (EN) to
position 1-2 (DIS).
The details below are given for the clock speeds of processors
known at the time of writing. The processor will send information
to the BIOS and the BX chipset, ensuring that the required bus
frequency is set automatically. You then have to set the links as
below:
J5 J6 J7
I I I
O I I
I I O
O I O
I I O
I=jumper fitted
If you need to disable the PCI audio accelerator (DSP) move
jumper J9 from pins 1-2 (EN) to pins 2-3 (DIS).
The on-board audio system can be disabled by moving jumper J10
from pins 1-2 (EN) to pins 2-3 (DIS). Disabling the audio system
frees the interrupt and DMA channel used by that system (normally
IRQ5 and DMA1).
Normally, the Power Mode light is [red] when the system is in Off
mode. If you move jumper J11 to pins 2-3 (OFF) the [red] light is
extinguished in Off mode. All other modes remain unchanged.
However it provides a useful warning to indicate that the power
cord is still connected and should be left in the 1-2 (ON) position.
J8 Ratio 66MHz bus
O 3
O 3.5
I 4
I 4.5
O 5.0
O=No jumper
CPU bus speed
100MHz bus
200
233 350
266 400
300 450
333
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