Thanks for your reply :-)
>What do you have attached to port C?
connected to pin 30 on the ucSIMM is a 1K resistor with LED.
I assumed that, on boot up, pins 23-30 default to become General Purpose
I/O Port C. Then the bit0 on Port C should switch on & off?
I know that these pins serve as the LCD Controller also, which is why I
wondered if there might be a need for some other C command??
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