I have a RICE16 emulator and am running a 16C73 emulation. I am running off
the internal oscillator of the emulator and my program is OK. When I try to
run a 16C73A in the socket the timing is way off and my RS232 comms is wrong
with garbage coming out. I have looked at the frequency at OSCOUT and it is
OK at 10MHz but varies by about 1% max. I programmed the JW chip with the
WDT off, HS mode, power up disabled. The 16C73A sits some 2 cm above the
board due to an adaptor being used. I considered that the crystal and
loading caps may be too far away and solered a crystal and caps very close
to the pins. Results still the same. I have check the MCLR and this is
staedy at Vcc. I have a LCD connected to it and the display is showing that
the operation is OK just the timing out when sending data to another 16F84
which in turn controls the LCD.

Any help would be appreciated.


Peter Grey