Week 3 - Lecture

Like last week, I was expecting the professor to give us the code for lab 3 as we were not able to make much improvements in our code, but it did not happen. Anyhow he gave us some very important logic on how each of the problem could be approached. You can view all of them here:
https://wiki.cdot.senecacollege.ca/wiki/6502_Assembly_Language_Math_Lab
So for our problem he told us we could approach it in a way where we could use deltaX and deltaY to manipulate rows and columns and he also showed us different techniques on how multiplication could be performed otherwise since there is no instruction for multiplication in assembly. He also suggested we could use dcb logic used in Etch-a-Sketch Style Drawing code on page:
https://wiki.cdot.senecacollege.ca/wiki/6502_Emulator_Example_Code.

Although I did not get what I wanted, I still got an insight of what I was looking for and I had more to think of. After this he proceeded to tell us about different addressing modes that were there and explained utility for each of them. There were a total of 13 of them.
You can find the list and more about each of those modes under:
https://wiki.cdot.senecacollege.ca/wiki/6502_Addressing_Modes

Then he also talked a little bit about possible projects that we could be working on and how to find one of them in future.
Some key points I collected from the possibilities were:
1. It should be an open source package.
2. Should be CPU intensive: could be

• codec
• compress
• images
• crypto
• math
• large data sets

The class ended and next target I had in mind was to work on and finish lab 3.