Hi PicPeople

I'm trying to convert code from 16c74B to use it in 16f874 because I need
EEPROM data memory and, because it's easier to program , (no UV needed!!)
and as I can see, there is no difference in code and also pinout
configuration is the same.
My program uses only the registers of bank0 (only switch to 1 when change
tris and some configuration like ADCON1 to disable AD's).
I haved connected to the pic a display 24x2 8 bit mode, an SCC (Z8530) for
packet radio reception/transmission, and rs232 driver.
The programs seems to work ok with the LCD and rs232 output is ok too, but
when I run the SCC routines, the f874 restarts, and sometimes it hangs too.
The code works perfectly in the 16c74B, I was using this equipment for months
with no problem!!!, I only use the ports as I/O, I'm not using A/D or CCP,
or USART (rs232 is done in software).

What do you think that could be wrong?, the SCC bus is on portB and the control
signal is on portD0-4 so if there is a problem, i think that must be on RB or
RD port, any ideas?.
Please help!!....
thanks in advance.

byby.
   Leandro J. Laporta (LU2AOQ)      mail: lu2aoq@yahoo.com
 wrk: Arg. Assoc. for Space Tech.    ham: TCP/IP high speed group HSG


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