philipj

Thanks for the link. Here's some old documents that was once being revised. I know at one time you could download them here at AA; here are my copies.

Where can I download it?

I know this topic is old, but has there been any more updates to SMAC...? I've uploaded my copies from the original website for those who's interested.

Ok here's a link to a website that found a few weeks ago concerning interrupts specifically for the TI-99/4A system... I'm still learning as much as I can about the computer so for the moment I'm simply fishing for as much info as I can at this point so any thoughts posted here will certainly be helpful and documented. I'm really interested in doing graphics and sound for the system, but when I saw the article I was pretty excited about it and was looking forward to using it for graphical purposes, but a simple clock would be a great way to start off programming. http://www.nouspikel.com/ti99/titechpages.htm

I think it's pretty neat you're putting the 68000 to good use... I remember a conversation with the guy who did "Battlesphere" a while back asking him how he was able to use the 68K and still get real-time 3D action from the game while the chip was still on the bus using main memory. If I recall, he got all of the processors to work at different moments in time instead of working parallel with each other, which at that time kind of gave me a glimmer of hope for the 68000 role. It was, at the time, understood that the 68K was being treated like the main processor for that "warm & fuzzy feeling" among enthusiast, also being the reason most of the 3D games like "Checkered Flag" ran so choppy. I always thought of it a waste to not put the 68k to some good use especially for 3D stuff or pseudo 3D stuff.

Here's a little article I ran into at "archive.org" from an 1980 "Byte" magazine... A link to the web-link is below. I haven't read it fully, but I do understand that those interrupts can be pretty fast when used properly, especially on the TI-99 with it's limitations. I've attached a PDF file to this post to specific article discussing an "Interrupt Driven Real Time Clock" with source code. I bet there's all sorts of useful things that can come from the article for anyone who's interested. https://archive.org/details/byte-magazine-1980-09 An Interrupt-Driven Real-Time Clock for the TMS 9900.pdf

Awesome man...!

Well this topic is quite old, but I think it's still very relevant... And yes I do believe the GPU has some instructions for graphics if I recall. Here's another question I have... A while back, wasn't there a midi interface built for the Atari Jaguar? Seem I recall a midi device built that could be connected to the back where the "Jaglink" device could be hooked up to. Does anyone know where I can find the website for that schematic? It's been a long time since I visited this particular topic; it's nostalgic to read these old post so in the spirit of this topic, here's a couple of YouTube examples of 1-bit synthesizers using 8-bit processors to drive the sounds just to give an idea of what's possible. Enjoy

Ok you got my attention... I'll be following this topic from here on out.

I wish I could help you with that... I've always wanted to program the Atari System 1, but my skill level isn't there yet. You might have to make your own sound driver for that thing or try and get in contact with someone who's familiar with MAME's version of the System 1 emulator driver. Until then, here's a few pdf files I have on it including the "Ireland info" minus a couple of pages at the end. Hopefully this will help you in some way. Good luck. 00000015.pdf Atari System 1 Information.pdf Atari System 1 Schematic Package.pdf Atari System 1.pdf Atari System1 (TM-277 1st Printing) Operator's & Parts English.pdf gauntlet_memos.pdf RoadRunnerOpMan.pdf

You know that XM module had me, and still got me pretty inspired... I remember years ago at JS2 I use to mention the use of a YM2151 sound chip on a Atari 7800 for the simple fact that Atari had the "Atari System 1" that used the chip. It was always a what if scenario, just curious why Atari never used it in the 7800 console. I know GCC had they own sound processor for the 7800 and it would've been nice to see that kind of chip in the 7800. I wish I can make my own module for the 7800... It would be something special with an extra processor to aid the already slightly better than the 2600 CMOS. I hope this XM gets released.

It's been a while since I posted anything about the Jag; I sold all of my Jag stuff about a year & 1/2 ago. I did regret, however selling my "Skunkboards" thus I just got me a 3rd gen Skunk. I don't think I'll sell it again for a long time, but it is very pleasing to hear the Jag is getting a SD cartridge. Now I got to get another Jag system; those things are scarce and becoming as high as a Neo Geo system with a cartridge. Seems like the interest in the Jag has come back or surged or something.

To be honest, I am to still kind-of holding my breath on the release of this thing... When it's released, everyone (7800 owner) will want one immediately thus I want to be ahead of everybody. I still, also too, have my tracking number archived so I'm still waiting, but I understand that the long waiting period has kind of got me exhaling some if you catch my drift. Not likely... I still have hope.

I sold my Atari 7800 collection a while ago... Of course if they finish and ship the XM module, I'm going to get another 7800 system off of eBay just so I can try the XM. I've all but written off the release of the XM. Also I don't think Curt is able to do the refunds; I still have my email receipt archived should they ever finish the thing for release, but I would like to know something since I paid for it... But at this point, I'm almost ready to count it a lost.

It's been a while since I kept up with anything homebrew in the retro gaming world... When this popped on my Facebook, old googly feelings re-immersed like the days of old when the Skunkboard was made for the Atari Jaguar... Definitely worth posting. "Web Article" \http://www.geek.com/games/sega-saturn-finally-cracked-saving-the-console-from-extinction-1661486/

Can someone please port this over to the XM please...

The hardware is still the same... Let them finish their work so we can see this come to fruition.

Just trying to keep the spirits up... I guess it will run it's course after 5 years or so. Time truly is of the essence especially if you've paid the money already for it. Reminds me of when as a teen I was paid in advance to cut a guys yard and I waited too long until the guy finally confronted about it. Of course I got the job done, but the dude never hired me again. A lesson well learned early on in life.

That's usually how it is... A lot of underground developers just don't have the time to do home-brews and hobby products they way they like. Those who do put in work and actually have real prototypes do deserve some respect because it really is a sacrifice on time, energy, money, resources and what have you. Usually work and family comes first, then the pet project takes priority. If you can actually release something and it's good, then that's a milestone over the hurdle of real life where as there's more to life then developing for great retro goodies like the Atari 7800 via XM. Then when it's released and everyone has gotten there's, you'll be sorry you missed out on it. But time is of the essence and that's very important too.

That's why I never really pursued a refund... I knew once the XM is released, I'd kick myself for not waiting on it. I'm a very patient person; sometimes too patient, but I've never known Atariage not to deliver. Kind of reminds me of "BattleShpere" for the Atari Jaguar, the time it's taking for it to be finished... I'm still waiting.

Agreed... I still want this thing to be released.

The game does look pretty laid back like "Root Beer Tapper" or something to that nature.

Whoever want to use it... This is a hobby machine after all and it's safe to assume that people will be getting the XM when it's released. The orders have already have been made at this point. Someone will come out of the blue with something rather it's a YouTube or whatever. It would be nice to see it released pretty soon.

I think the add-ons are a welcomed addition... Besides the YM2151 chip sounds a whole lot better then the standard TIA music wise. On another note, there was an article out there that was released in 1984 for speech synthesis using the old Texas Instrument sound chip in the old "Speak & Spell"... It use to be easy to find on line back in the day, but not anymore. It used PCM or Pulse Code Modulation, which are great codecs to use for sound manipulation. Many of the Casio keyboards through-out the 80s and early 90s used PCM for their store shelve line ups. Here's something that did come up in my internet search. https://archive.org/details/SpeechSy1984