Hi,

I wrote an application for 16C711 and it has been tested and working fine.
Now my company wants to 16C712 because it's cheaper.

I used the same code but recompiled it to a 16C712 hex file. (BTW, I use
Hi-Tech's PICC). But the new chip has some weird behaviors; some functions
are working but some are not. It seems to me that I need to edit the code in
order to migrate from 16C711 to 16C712.

But I don't know what is needed even after I read the datasheets. I use
basic functions only -- TMR0 interrupt, ADC read, digital inputs and outputs
on PORTA and PORTB.

Here are my settings:

OPTION = 0b10000001; // disable PORTB pull-up
TRISA = 0b00011111;
TRISB = 0b11110000;
ADCON1 = 0b11000010; // RA0,RA1 = analog; others = digital
INTCON = 0;
GIE = 1;
T0IE = 1;
T0IF = 0;

It seems straightforward; it works with 16C711, but not 16C712. Apparently I
missed something. What is it?

Thank you for all the helps.

Tony

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