I will no longer be updating this blog as I'm spending my time with my HTTPS://TI99RESOURCES.WORDPRESS.COM which is a database of things TI99 and it's related retro-computers, https://centraltexasretrocomputer.org/
our local retro computer club and up coming projects. in the near future I will be deleting this blog all together. thanks for the views.
little while back I decided I wanted to do a little bit of Assembler on my Atari 800xl. Well, I went on eBay and found the E/A carts were rare as Hen's teeth and when they were on sale the wanted a fortune for them. That's when I remembered that I had saw a version of the E/A on disk, somewhere, once upon a time, long ago... you get the idea. So I posted on Atariage/Atari 8bit and asked if anyone remembered such. I got a response and then a discussion and then finally a disk that works. There su
just messed around with a new feature @senior_falcon put in XB256, the ability to display multicolored fonts easily and quickly. and I got it to SIX full alpha font set colors. the TI99 now has an easy way to display up to 6 different alpha fonts on the same screen!
way it works is you can type the the characters you want from the color character set directly with the offset CALL LOAD(9596,xxx). this enables you to just type the letters you want to display in this fashion:
some plans I have for my PEB is color. check out the above picture. the PEB in beige and that brown/gray color. This color of PEB was never released by TI (the above picture is old ad material). I am seriously considering painting mine those colors to match my beige TI99. I have actually started looking for the paint to paint the PEB while I have it disassembled. the beige color has been easy enough to find but that brown/gray color has been a bit problematic. the only place i have found a match
got a new PEB to replace the one with the bad power supply. I tore the new one open to clean it and check out for any bad capacitors (looks good). also the ON button was stuck, I just cleaned it up and and the ON switch is now fine. Here is the picture of the PEB torn apart.
I tested out the interface and the memory. no problem with either.
here is the whole test setup.
a the full height PHP-1250 drive
I have updated three of my programs for the TI99: MilleBorne, Yahtzee and Uno.
for MilleBornes I cleaned up the code for the AI opponent & made it faster.
for Yahtzee I remade it without TML to speed the program up by factor of 2. Drawing the fancy color fonts in TML slows down the program because TML has to essentially draw each font on the screen in high rez. Redoing the program for just using DISPLAY AT speeds things up a lot.
for Uno I also remade the program without the
Here is another conversion from my Atari BASIC programs to the TI-99. It's a Yahtzee game. I never liked any of the Yahtzee for the Atari 8-bit so I wrote my own. This is mostly a direct port of that game except for the graphics. On the Atari I used DLI to change the font sizes on the fly which can't be done on the TI-99. But, I used Harry Wilhelm's amazing TML program for some other graphics. TML gives the XB programmer access to the bitmap graphics of the TI video chip. You can create Cartesia
I have made a decision to paint my PEB beige as well as the speech module. this is going to be my inspiration:
I'm going to keep my black keyboard I have adapted for the beige TI-99/4a I have so I might use black drives to balance out the look. I'm also got to experiment with creating my own decals. We'll see if that works.
Another Extended BASIC game for the Ti-99/4 line; Star Merchant.
Back in the 80's there were several variations of this game where you traded merchandise between star systems. The game dates back to at least August 1981 when Creative Computing published the game but probably goes back even further to the mainframe era. I seem to remember playing something like this on the TI mini-frame in school.
Simple game, you buy merchandise in one star port the 'Warp' to another star port and try
Mille Borne is a French card game of auto racing currently being sold by Parker Bros. The actual card game can be played with 2-6 players but the computer game is 2 player only; you vs. computer. The object of the game is accumulate enough mile cards to make it to the finish line. But there are hazards along the way that will keep you from that goal. If you haven't ever played the game refer to the manuals I have included with the game .zip file.
in this computer version there are a few di
An update on this project.
I never could get the beige TI-99/4a keyboard to work. the Mitsmu keyboard is a very poor design that uses cheap springs to create tension. After a while the little springs go bad and the key no longer responses. I tried re-tensioning the springs but that didn't work. I finally just replaced the keyboard with an old reliable black keyboard. It actually looks cool.
on the PEB, I plugged it and and magic smoke. blew a few diodes, capacitors and who knows what.
I recently got a beige TI-99/4a with a bad keyboard. Fortunately got it real cheap. The problem it had was just a few keys worked. So I took it apart, checked the keyboard, the traces and everything looked OK. Posted the issue on the forum and it was suggested the keyboard processor was bad. A few weeks ago at the ATX TI fest I got a new processor and I have just now gotten around to installing the new keyboard processor and.... the new processor is worse off then the old one. the computer just
NOTE: an update of OeeyGUI is forthcoming. I'll post v2 when I receive it from Shift838. the BBS software still works, though, if you just want that.
Here is the OeeyGUI & Fusion BBS that Shift838 demonstrated at the TI99 fest in Austin. The fusion BBS wasn't on the CDs I handed out.
UPDATE: found the bug in the 99/2. erase the ti99_232.ini in the INI directory fixes the issue with it starting in partial emulation mode.
Here is some of the software from the CD1 of the 2 CDs I gave out at the TI99 fest in Austin. I removed the documentation so the file would go over the max file size. also Oeegui will be posted in another post.
for those who weren't able to attend the Austin TI99 fest I handed out a 2 CD pack to as many as I had. It contained a disk of lots a
Converted my Atari 800 game Uno card to TI-99. I used the KXBII extensions to create multi-color text. (see earlier blog post for Uno for Atari 800 and KXBII extensions for TI-99/4a).
Plays at TI-99 XB speeds, which is to say, fast enough. The multi-color text is part of the KXBII extension package. Works rather well & fast enough and bug free. Only weird glitch is 1/2 character random flicker in one letter (you'll see it) when text being printed.
I created a CALL PR(X,Y,TEXT$,fo
I looks like I screwed up. A little while back I posted a blog about Harry's 40 column routine he created for the TI-99/4a. I also added a the game Civil War. After rechecking the blog I discovered the two files I posted were the wrong files. ACK!
So, here are the right files and a little more. I have the T40XB utility on .DSK and my XBBOOT.DSK which included the T40XB on a menu along with TML & KXBII. And I have a directory with all the games I have posted so far.
Here is the cor
MAME TI 99-8 & TI 99-2 full usable download I have put together a workable MAME TI 99-2 & TI 99-8 packages. Just download and execute the batch file in the MAME directory. The 99-2 & the 99-8 never made it market for TI but they got fairly far along to the point of workable prototypes and even manuals (download manuals from http://ftp.whtech.com/datasheets%20and%20manuals/ ). The 99-2 works fine as is. It only has 4k of memory, no sound and B/W. Bo sure to use only the disk in the
I wrote a version of Uno for the Atari in Atari Microsoft BASIC and posted a few blogs ago. Well, here is Uno in the Kull XBII. Kull XBII is a little known package to TI-99 Extended BASIC. Check an earlier post for more on the KXBII package. One nice thing about KXBII is that it enables multi-color text which I use a lot in the program and it looks really good. Multi-color text is the best feature in KXBII. As I detailed in the earlier post about KXBII is there are a few limitations such as a
A previous post I created LINES on a Coco 2 with 8 colors using Tino Deleurgo's Expanded BASIC utility package. It utilized semi-graphic capabilities and is a rather nice package with lots of nice features. Unfortunately the manual isn't that great. Tino uses a tutorial structure in the manual that makes it hard to find the commands and what they do. So I wiped up a quick reference manual for myself and decided to post it. I zipped it up with the original manual which you will need. Here it is:
http://www.2600connection.com/features/parsec/parsec.html The game I wrote for the Atari 2600 is now for sale as a cartridge. Parsec 2600. It includes a nice booklet and a professionally created cartridge. it's a limited run for now. Cost $25. Click on link above.
‘LINES’ is a simple enough program. It draws random lines on the screen in a trailing pattern. I have posted several versions from multiple 8-bit computers on this site. I have even posted a version for the Color Computer 2 with four colors. Today, I’m going to post another version of LINES for the CoCo2 but this time in eight colors! “Eight colors! How,”, you say, “how can you get eight color on the screen with the CoCo2?!? That is impossible! That challenges the very laws of physics!!” First,
A few years ago I came across this disk of extensions to XB and was intrigued. It had nice high resolution capabilities and some interesting clock functions. I initially did some research and found it was released by Peter Kull in Germany in the 80s and that he has since disappeared from the TI99 scene. Not much more was known about it. Well, life happened so I put this project aside for a few years. But recently, having gotten back into the TI99,I pulled the old KXBII disk and decided to finall
I have been going through my Atari 8-bit games and looking to translate them into TI-99 games, mostly BASIC. The games I wrote in Atari MSBASIC are fairly straight forward translations. Atari BASIC has the issue of strings being completely different but can be got around. One thing that both Atari BASICs have in common is the Atari uses 40 column text. This can be a tedious issue to fix when translating to TI99 32 column text. You have to go through each line check, recheck, reformat recheck aga