/members-area/personalblogs/b/nexgen-flight-simuator/posts/nexgen-multi-purpose-color-display-f-a-18c-d-mpcd-hardware-software-interface-iiI have been down this road before but now I have the final solution. I found it in my old Motorola M6800 Applications Handbook , section 5-1.1.2 NonEncoded Keyboards. It used a PIA or Peripheral Interface Adapter, but since I am using an Arduino I neen-USTelligent Community 12https://community.element14.com/members-area/personalblogs/b/nexgen-flight-simuator/posts/nexgen-multi-purpose-color-display-f-a-18c-d-mpcd-hardware-software-interface-iiWed, 28 Apr 2021 12:41:01 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b824827a-3008-4aab-b06b-c422aa45fbcfrishabhghoshal0<p>This is amazing !</p><img src="https://community.element14.com/aggbug?PostID=10926&AppID=300&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/members-area/personalblogs/b/nexgen-flight-simuator/posts/nexgen-multi-purpose-color-display-f-a-18c-d-mpcd-hardware-software-interface-iiSat, 27 Mar 2021 22:05:09 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b824827a-3008-4aab-b06b-c422aa45fbcfneuromodulator0<p>You probably meant volatile instead violate </p><img src="https://community.element14.com/aggbug?PostID=10926&AppID=300&AppType=Weblog&ContentType=0" width="1" height="1">