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About this blog

Collection of my retro computer projects and interest. Nothing deep or profound, just stuff.

Entries in this blog

Mod to MEDIT for APX Pascal to make it work

I have been testing the waters of Atari APX Pascal recent and have been having an issue with MEDIT blowing up when run from the Pascal menu. I twittered the great Bill Lange who gave me the fix. (1) As you probably know, you have to copy the MEDIT executable over to your work disk image in disk drive D2. In addition, MEDIT needs a minor modification for it to work with the Atari Pascal Language System. (2) With DOS loaded, put the work disk into D1. Use the DOS menu option N to create a M
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Kull Extended BASIC II TI-99 XB extensions

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 fi
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My game PARSEC 2600 is now for sale as a cartridge

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. (SOLD OUT)
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Uno game in Kull XBII for TI-99

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
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TI 40 Column Redux

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
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Uno for TI-99/4a in XB with multicolor text

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
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Some software from CD1 ATX

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
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Star Merchant in T-40 on TI-99/4a

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
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Yathzee in TML (the missing link) for TI-99/4a

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
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UPDATE: TI99 MilleBorne, Yahtzee, Uno FASTER VERSIONS

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
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six color fonts using XB256 in TI99 XB

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: CALL LOAD(
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Atari 8-bit Editor Assembler on Disk

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
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12$ upscaler for TI-99/4a and any other composite computer

$12 composite to HDMI upconverter review 7-24-2020 I have heard a lot of mixed opinions on these cheap composite to HDMI upconverters. So when I saw one on eBay for $12 shipped I thought I might give it a shot. Turns out I was pleasantly surprised. It's not a f18a by any means but it does do a good job of clearing up the picture on flat screen monitors. here's a picture of the TI title screen with just composite> It's not a great picture but you can see how the
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the TV Game

the TV game 9/4/20 This is another one that is only loosely connected to the TI99. A couple weeks ago I had a backup drive crash with a lot of my retro-computer stuff on it. Fortunately I have found most of the stuff elsewhere but while looking through my old Atari software I found one of the oddest role playing games ever, 'the TV game'. Way back in the 80s me and some friends of mine came up with a role playing game where you took on the mantle of a network TV primetime pro
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MAME TI 99-8 & TI 99-2 full usable download

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
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Mille Borne 99 - new TI-99 card game in XB

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
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