Because when you configure RA3 to act as a normal input the MCLR signal is disconnected from the pin and instead connected to Vdd internally. In other words, it's not the PIN that's connected to Vdd...
answer found !
from thread: PBP or ASM?
I cannot speak for all flavors of basic or C, the biggest difference is going to be your time. Assembly requires many times more lines of code to be written...
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Re: 16F690 MCLR as Input
Because when you configure RA3 to act as a normal input the MCLR signal is disconnected from the pin and instead connected to Vdd internally. In other words, it's not the PIN that's connected to Vdd...
HenrikOlsson Today, 19:25