It might be possible, but without interrupts I don't have very accurate or reliable timing. I tried playing a solid tone and it sounded awful. Now that I think about it though, it could be because Wabbitemu had bad sound emulation recently.

Quote from: DJ Omnimaga on November 02, 2010, 05:39:04 pm

TI-Boy already got sound

Not in this version.

oh

I assume by what you discuss after this post that sound might be gone for good?

Idk, calc84 would be the best to answer this

Ahh ok. Sound really isn't a big deal, it was just kind of a novelty in the old build anyway. Although it was neat. =)

The (crystal) timers don't need interrupts to work. You can check them passively. I assume the issue here is being able to force the link lines high/low at the right time when you're using them passively. Quick research on Wikipedia suggests that if you get the pitch constant to within 25 cents, the variation in pitch will be acceptable, perhaps unnoticeable. To provide, say, 8000 Hz audio, you'd have to get your code to check and output 8000 times a second, with a sample-to-sample time variation of no more than 1.1%. . . . Actually, these numbers are starting to make this sound pretty hard. With interrupts, the timing is easy, but without them, you'd need even way more checks than for doing the grayscale.

One question I have: what makes sound so hard to implement in this version compared to the previous one? Is it just because of the lower RAM usage (to keep compatibility with newer calcs)?

how off would the sound be if you didnt have the interrupts. and is sounds possible without interrupts? I mean without caring about the timing

yep, problem is that newer ones won't work unless you got a special beta from calc84 although there is the gbc4nspire but you need a nspire and a crappy OS. welcome to omni btw (I dont post in introduce yourself ^.^)