Now that a CSE-compatible Wabbitemu came out (thanks Buckeye!) I continued working on the ROM-based TI-Boy CSE implementation (by ROM-based I mean I built it as a TI-84+CSE rom image) and finished off the (unscaled) graphics. Then DrDnar supplied me with a flash unlock exploit so I was able to port over the setup/teardown code from TI-Boy Beta, and I'm surprised to say I can actually run it on my TI-84+CSE!

There are still a few issues with this, like it doesn't properly handle the CSE-specific data on the extra RAM pages yet, so there's probably some corruption going on. I also need to put in a proper splash/loading screen and a better exit screen, plus port over Makeapp and modify my paging code accordingly.

As far as performance goes, it's certainly not as fast as the latest TI-Boy SE Beta, but I'd say it's still playable, perhaps on the level of TI-Boy SE Alpha. Unfortunately there's not much I can do about that, without some sort of crazy dynamic recompilation or something (maybe I'll actually implement that one of these days, but I'd rather put out something that works first).

Sadly, it's not likely that I'll be supporting audio in TI-Boy CSE, because it won't play well with my optimized graphics code. But you never know, I also said that for TI-Boy SE Beta, and I proved myself wrong on that. Here's hoping!

Let's go TI-Boy!

This looks great. Can't wait to see more in the future!

This is looking amazing!
Great job!

You don't even know how long I've been waiting for that.
And I realize that I wrote that post before giving you a +1.

I believe a full-screen, 320x240 mode is planned for development. He will try to support stretching the screen to completely fit, so 2x horizontal scaling and 1.66x vertical scaling (probably without any interpolation). I guess a clipped mode with 2x vertical scaling is also possible, but I don't think he's as interested in supporting that, at least not yet, as one of the nice benefits of the larger screen was ditching the screen scrolling code that TI-Boy for monochrome calcs needed.

Hey, nice to see you've managed to get this running. It's an awesome accomplishment. I really wasn't sure how well this was/is going to work out. Since it's you though, I won't be surprised if you somehow manage to squeeze some more performance out of it, being the Z80 wizard you are.

The I exploit I provided is just the one BrandonW initially gave me last spring; I didn't write it. It has the deficiency that it only works on boot code 4.0 (it depends on the exact placement of certain code), albeit with the upshot that never references any OS code. You should ask BrandonW (or perhaps thepenguin) for a better one.

Well, either way it should probably be boot-code based (or at least not reference ROM pages 0-3, which are destroyed during TI-Boy execution).

Will custom palettes or Super Gameboy palettes be supported? Also I recall that some late GB games had colors assigned to them so that when you play them on a GBC they use the proper colors. Will such feature be supported?

SGB is not likely, but I am planning on supporting various colorization palettes like on the GBC. I'm not sure if I'll do auto-colorization, but it could be possible on a game-by-game basis (some games were hardcoded into the GBC bootstrap code to use certain palettes).