Horizontal Blank Timing

Over the years I have spent time looking at computer design and cpu design.  I dream of building my own computer from scratch, not just buying parts and putting a pc together, using simple logic gates from the 74 series and designing it from the ground up. I read many...

Sprites and Masks

Im sure most people will be use to the idea of sprites and masks, but just incase ill quickly recap on the details of them before going into the trick im using for Dizzy.  A sprite is usually a chunk of memory representing the pixels for the graphic, you need to know...

OCD… Maybe

Having got a working version of the levels displaying, i needed to a) speed the drawing up and b) sort out the code to a more usable format. Sorting the code was mainly due to the fact i had thrown things together to test if it could all work.  Everything was put into...