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CFabr1's avatar
CFabr1
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3 years ago

LED circuit issue with CPLD and Quartus

Hi all, I'm trying to implementing under Quartus this simple LED circuit (based on two D flip-flops) using a +5V CPLD (EPM7032) As you can see, there are only three signals inputs to the ...
ShengN_altera's avatar
ShengN_altera
Icon for Super Contributor rankSuper Contributor
3 years ago

Hi,

The functionality of the Megafunction tested with no problem check the image attached.

While OPT02 is asserted, LED1_CATHODE will toggle. As OPT13 is not asserted, LED2_CATHODE will not toggle.

Thanks,

Best regards,

Sheng

p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.

CFabr1's avatar
CFabr1
Icon for New Contributor rankNew Contributor
3 years ago

Thanks for reply.The problem is that, when the only OPT13 is asserted both LEDs toggle while only LED2_CATHODE should actually toggle.

P.S.

OPT02 and OPT13 are coming from an old japanese computer.