Porting Ultima IV to my 3RIC 6502 homebrew computer: Apple II language card and banking challenge.
Ғылым және технология
Welcome to another episode of my series on porting the Apple II version of Ultima IV to my 3RIC homebrew computer system. The 3RIC is a custom-built computer that I created from scratch breadboards. In this video, I will share with you how I designed the Apple II language card and banking functionality for my 3RIC. The language card was a hardware expansion that added 16KB of RAM to the Apple II and Apple II+, enabling more complex programs and games. I will show you how the language card works, how it uses soft switches and RAM banking, and how Ultima IV uses it to store map tile data. I will also show you how I modified my memory map and MS Basic to fit the language card emulation. This is a challenging and exciting project that requires a lot of creativity and problem-solving skills. I’m doing this project as a hobby and as a way to learn more about retro gaming and computer architecture. I hope you will enjoy following my journey and maybe get inspired to create your own homebrew computer or port your favorite retro game. If you like this video, please subscribe to my channel and leave a comment below. I would love to hear your feedback and suggestions. Thanks for watching!
github.com/ebadger/3ric
Пікірлер: 7
Love your work! Looking forward to more updates!
@thecodesorcerer
8 ай бұрын
Thank you! Enjoy your work as well!
Just discovered your channel and watched several of you videos and subscribed straight away I like you during lock down built Ben Eaters 6502 board but I sourced all the components my self as at the kit plus postage overseas made it more expensive. I have been a big 6502 fan ever since the early 80’s. Glad to see it’s still an appreciated microprocessor and others are getting so much fun out of it You have taken the work that Ben Eater did to a whole new level with the graphics and porting the games It just shows how innovative Jobs and Wozniak were Great work thanks
@thecodesorcerer
8 ай бұрын
Thanks Andy!
Nice update. I avoid 22V10s personally because of their high power usage, using 16V8s instead where possible - I've tested running the same logic code on both and found the 16V8 drew half as much current in practice. They are less flexible, however. WinCupl's GUI is pretty awful, and from what I remember, it crashes a lot. I made a script to run three compiler and simulator from the command line instead, which is much more comfortable - highly recommended!
A great low-res Apple II game is called 'Three Mile Island - Muse Software' - A simulator published in 1979 - You operate a nuclear reactor and once you get into it - it's very fun.
@thecodesorcerer
8 ай бұрын
I played this on the Atari