FP2/FP2SH OperationFP2/FP2SH
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6.7 FP2SH ROM Operation
6.7.3 Precautions When Operating the ROM
Precautions Before Turning On the Power Supply
At the point when the ROM is installed, be aware that operation differs as described below,
depending on the setting of the DIP switches on the back of the CPU.
If the power supply is turned on when DIP switch SW2 is on and SW4 is off:
When the power supply is turned on, the contents of the memory (ROM) are automati-
cally transferred to the internal RAM and written there. Be aware that the previous
contents of the RAM will be lost at that point.
If the power supply is turned on when DIP switch SW2 is off:
Even if the memory (ROM) is installed, the contents of the internal RAM can be read
using the programming tools.
Consequently, to confirm the contents of the memory (ROM), the contents of the ROM
should be sent to the internal RAM.
To continue using ROM operation, turn off the power supply, and set DIP switch SW2
to the “on” position and SW4 to the “off” position. Then turn the power supply on again.