Francesco Posted October 7, 2012 Share Posted October 7, 2012 Hi to everybody, I have coded several Action Script emulators such as Sega SC-3000, Sega Master System, Coleco Vision, MSX1 and some arcade games ( Pengo, Crush Roller, Pac Man, Lady Bug, Solomon's key and Bomb Jack ). I always have wanted to learn more about the TI-99/4a, and maybe to code a special online emulator. Can you suggest me a good doc to read to learn how this computer works? I mean, something that let me go deep in the hardware, which talks about hardware specs, memory map, bios, functions, I/O, everything... Is there something that explains what happens when you turn on the machine with or without a cartridge, or how the memory mapped I/O ports are read or written ? What is the Ti99 Bible ? Thank you. 1 Quote Link to comment Share on other sites More sharing options...
lucien2 Posted October 7, 2012 Share Posted October 7, 2012 Here is the bible: http://nouspikel.gro...titechpages.htm And the TI assembler manual: http://www.retroclouds.de/atariage/Texas_Instruments_Editor_Assembler_Manual.pdf Quote Link to comment Share on other sites More sharing options...
+retroclouds Posted October 7, 2012 Share Posted October 7, 2012 Good luck! :-) Quote Link to comment Share on other sites More sharing options...
RXB Posted October 7, 2012 Share Posted October 7, 2012 Oddly there is information in the GPL manuals that will be useful. http://www.retroclouds.de/atariage/gpl_programmers_guide.pdf With out the GROMs on the TI it would be a pretty dull machine and would have never become popular. The GROMs were badly done but that is the way things go. Quote Link to comment Share on other sites More sharing options...
Tursi Posted October 8, 2012 Share Posted October 8, 2012 Well, that sounds fun! The TI is probably closest to the ColecoVision on that list - same sound and graphics chip. Quote Link to comment Share on other sites More sharing options...
Francesco Posted October 8, 2012 Author Share Posted October 8, 2012 Thank you very much for the precious information. This is a good starting point. I'll read everything and I will update you soon. There will be probably things I will ask you Thanks again. Quote Link to comment Share on other sites More sharing options...
sometimes99er Posted October 8, 2012 Share Posted October 8, 2012 (edited) Edited October 10, 2012 by sometimes99er Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted October 8, 2012 Share Posted October 8, 2012 Thank you very much for the precious information. This is a good starting point. I'll read everything and I will update you soon. There will be probably things I will ask you Thanks again. Read everything eh? You must have a serious case of insomnia That said, an online emulator would be utterly cool and especially handy for mobile devices. I hope you can bring this project to fruition. Quote Link to comment Share on other sites More sharing options...
Francesco Posted October 10, 2012 Author Share Posted October 10, 2012 No, unfortunately I haven't insomnia, that would help doing much more things However I'm reading the docs, and it's an interesting machine. Questions regarding the architecture of the system are coming to my mind, but for now I'm just reading Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.