Handan Turkoglu

Hi,   We have circuit card having MC68302CFE16Care workin...

Discussion created by Handan Turkoglu on Dec 25, 2008
Latest reply on Jan 5, 2009 by Georg Brechlin
Hi,
 
We have circuit card having MC68302CFE16Care working  for repairing it. Although everthing EXTAL, XTAL, DISCPU, HALT, RESET, CS0-3   ..etc and  input clamping diodes All of them are OK  but there are no signal on address lines.  We tested output buffers connected to the address bus found that they are OK too . We disconnected one address line from the buffer  and saw still there is nothing on that address output .
Could you advise us what can be the problem or any idea why our CPU cannot start to operate?

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