> By the way, Microchip's USB firmware is using MPLAB C18. So there
> will not be anything like "clr TRISA".
> 
> And they are doing the following for the bootloader example
> (in file io_cfg.h).
> #define mInitAllLEDs()      LATD &= 0xF0; TRISD &= 0xF0;
> 
> This is indeed questionable. It is correct to set RD0/1/2/3
> to output since they are for LED output. RD4/5/6/7 are not
> used so maybe it is better to set them as output and output 0
> if you do not have something connected to them in the final
> circuits. Take note this is only the bootloader. The
> use application hardware/software should take care of this.
> 
> Regards,
> Xiaofan

Xiaofan,

I will tell you what happened, btw the touching issue is solved now,
but I don't understand why. Apparently it was pin38 which was
causing this. Now I connected it to gnd and the touching problem
is gone. Interestingly, if I connect it to 5v instead of gnd, the 
bootloader doesn't start AT ALL. As you have seen yourself in
io_cfg.h there is no mention of pin38 (on the schematic it is S3,
the bootloader shares some hardware with the demonstartion
board, but the bootloader never uses S3) so I have no idea why
this is happening. Any ideas?
b.t.w.
I would like to thank everyone here, I really didn't ask well, but
now I believe everyone should understand. thanks.
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