Basic Problem with Max II Board

[Altera_Forum]

HI,  

 I have a problem while programming the Max II Development Board.  I tried to do a basic positive edge triggered D-Flip-Flop while using the switches and Leds on the Board. I use the schematic. The simulation in Quartus works fine, but after programming the Flip Flop triggers on the positive AND the negative edge!!   Hope you can help me!  Stephan

[Altera_Forum]

--- Quote Start ---  HI,   I have a problem while programming the Max II Development Board.  I tried to do a basic positive edge triggered D-Flip-Flop while using the switches and Leds on the Board. I use the schematic. The simulation in Quartus works fine, but after programming the Flip Flop triggers on the positive AND the negative edge!!   Hope you can help me!  Stephan  --- Quote End ---    Hi Stephan,  what kind of board are you using ? Can you post your project in the forum ?  Kind regards  GPK

[Altera_Forum]

I use the Max II Development Board REV. 02.... 

I could post the project but its just a simple edge-triggered D-FF ....Maybe i have to debounce the Switch in the CPLD even if there is a RC for debouncing.What u think?  Stephan

[Altera_Forum]

I tried to debounce the switches with a Flip-flop, but it didn´t work. Maybe somebody can tell me how to debounce in the CPLD. 

 Stephan

[Altera_Forum]

--- Quote Start ---  I tried to debounce the switches with a Flip-flop, but it didn´t work. Maybe somebody can tell me how to debounce in the CPLD.  Stephan  --- Quote End ---    Hi Stehan,  have a look to : http://www.fpga4fun.com/debouncer2.html    Kind regards  GPK