Vinícius Rezende

Yes, another post describing the few minutes put iterating on this project in a span of many days, and it has finally concluded!

I discovered a test suite with a few ROMs that assisted me in completing the development and addressing a few issues. I only encountered a challenge when working with the input, as it was not functioning properly. It turns out I was incrementing the program counter in different places, thereby causing unexpected behavior.

Once again, I find myself reiterating that it has been quite an experience. I relish the opportunity to work on projects outside my comfort zone, and I believe this project is markedly distinct from my day-to-day work, providing a valuable learning experience.

While it may not be the best code I have ever written in my life, I am satisfied with the result. Onward to the next one!

This post sums up the small iterations of three different days. Basically, I implemented 9xy0 and cxkk opcodes, fixed some typos, corrected a few inconsistent implementations, and added SFML redraw only when the display opcode(dxyn) was called. Hence improving the performance.

I passed both test_opcode.ch8 and BC_test.ch8 test roms, which made many other roms work as well. I still need to implement the sound, input, and delay opcodes.

It’s been an enjoyable journey so far, besides taking a bit long due to the lack of free time. I am always thrilled when I get my hands on something different that’s not web-development related.

Navigating through a couple of hectic weeks, just for a change.

However, today afforded me the chance to delve a bit deeper into the code. I refactored the video portion of the emulator, organizing the files and opcodes a bit more efficiently. There’s not much to showcase at the moment, but my current focus is on the 0x9xy opcodes.