Hi,

I am using an 80c320 (with PSD813F1 and 62256 RAM chip) with a bare bones test program that simply strobes a pin (port1 pin 7) to keep the reset chip (DS1232) happy.

However the program does not run, and for some reason the INT1 pin of the 80c320 is toggling at about 5.432 kHz. It is not being toggled in software, nor is there any shorts to the pin. I've checked the bus and cntrol lines and they seem ok.

Does anyone have any ideas about what is causing this?

Thanks
Ross