Re: [uCsimm] using uCSIMM Port C for IO

From: Uwe Beutin (
Date: Thu Apr 19 2001 - 17:16:43 EDT

On Thu, 19 Apr 2001, Shaun H wrote:

> 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??

Well, did you enable the output? I don't have my docs ready, but I
believe that Port C must be enabled as an output for it to work as such:
I think: 0xFFFFFA13 = 0x00

Check for MC68EZ328 documentation (PDF file), you will need it!

Take care,


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