SPO600

Embarking on the journey of learning assembly language can be both exciting and intimidating. Recently, I had the opportunity to delve into the world of 6502 assembly language, a popular instruction set used in many classic microcomputers and gaming consoles. In this blog post, I'll share my experience of running my first piece of 6502 code, understanding its functionality, and modifying it to change the output color on the screen. Starting with the Basics The 6502 processor is a marvel of its time, known for its simplicity and efficiency. To get started, my professor provided me with a snippet of 6502 assembly code. The goal of this code was to fill the screen with a specific color. Here's the code I was given: When I ran this code in a 6502 emulator, the result was a screen filled with the color yellow. This was my first tangible output from assembly code, and it was quite a thrill to see! Disassembling and Timing Analysis To truly understand what was happening under the hood...