On 4/18/2013 1:51 AM, barrym95838 wrote:
... consistently get a typical memory pattern display on power-up, so at this point I'm still suspecting lack of reset-ability. (The keyboard reset key does not in fact reset it.)[...] My fix involved making sure that the Reset pin was held low for a sufficient duration after power-up ... if I remember correctly, it involved a simple Resistor-Capacitor set-up, but the details have escaped my memory
I thought 'capacitor' mid-sentence as I was reading that... something that can deteriorate over time, and has a delay effect on reset behavior. Off to the schematic!