Hello everyone
is there anyone with previous experience on 8085 systems?
I am facing a very confusing situation here.
we have made a two layer PCB for our 8085 system with single 8k EPROm and 2k SRAM . only chip select connectios are obtained using single thin soldered wires.
the system was working perfectly and efficiently for over a month untill we completed the whole project. yesterday as we were doing the finishing jobs after fitting it in box it stopped working. we could see a periodic signal on oscillocsope on A15,A14,A13,..,A8 the same signal was observed on all of them suprisingly the same exact signal could be seen on S0 pin 29. ( or S1 pin 33 I am not really sure about it now) It is so confusing how can the same signal appear on all of them? :roll:
could anyone suggest anything ? could it be due to one of the chip select soldered wires becoming loose while putting it in box?
I would appreciate any comment :wink:
is there anyone with previous experience on 8085 systems?
I am facing a very confusing situation here.
we have made a two layer PCB for our 8085 system with single 8k EPROm and 2k SRAM . only chip select connectios are obtained using single thin soldered wires.
the system was working perfectly and efficiently for over a month untill we completed the whole project. yesterday as we were doing the finishing jobs after fitting it in box it stopped working. we could see a periodic signal on oscillocsope on A15,A14,A13,..,A8 the same signal was observed on all of them suprisingly the same exact signal could be seen on S0 pin 29. ( or S1 pin 33 I am not really sure about it now) It is so confusing how can the same signal appear on all of them? :roll:
could anyone suggest anything ? could it be due to one of the chip select soldered wires becoming loose while putting it in box?
I would appreciate any comment :wink: