From: Martin L. <le...@di...> - 2005-05-11 14:38:38
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On tir, 2005-05-10 at 16:26 -0400, Jim Peterson wrote: > The code is simply intended to flash a LED which I have connected to > an output pin of a 8255 io chip. Symptoms include the address lines > are not functioning per the code, the RD pin appears inactive,and PSEN > appears ok. I have both a eprom emulator and a eprom programmer tried > both with similar results One option might be to run it in the simulator (s51) and see if it does what you expect it to? -- Regards Martin Leopold. Dept. of Computer Science, University of Copenhagen |