Day 12 and I decided to play around a little more with Mac/65. This time around I created a routine to loop through the 16 hue / 16 luminance combinations of the Atari 8-bit computers. This creates a really cheap and cheerful effect which you can sort of see on …

Day 10 was kind of a dud. I was more worried that I was losing my main OS drive on my computer, so I didn't do a learning challenge. (Everything's fine, AFAICT).

Day 11 and I decided to try something a little different:

This is a reproduction cartridge of the …

Day 8 saw me playing with more branching opcodes, including BCS (branch if greater than or equal) and BCC (branch if less than). Both of the branching instructions happen after a CMP (Compare) opcode. The results of the CMP opcode are stored in the carry flag. BCC stands for Branch …

Day six came and went with me not doing the learning challenge at all while I put together the latest episode of Open Metalcast.

Day seven was a little more productive with playing around with BEQ some more and realizing that I'm going to get the most out of entering …

Got a little distracted in this round as I wanted to try to do the next chapter on the Atari. Unfortunately there is a slight problem with the Atari and how it handles displaying characters on the screen.

Most books tend to cheat when they come to displaying characters on …