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So I made a previous post here, but nobody chimed in and I found out more information which might deserve a different thread since I can't edit the title. old thread http://atariage.com/forums/topic/277333-cx53-trak-ball-issues-jittery/ So I thought I had a Trak-Ball issue where it was jittery. I had changed just about everything in it; the dome buttons, all of the IC's, bearings, etc. Nothing seemed to help with it being jittery. I just got a NIB trak-ball from Venezuela. I plugged it in and nothing would move the cursor. I then swapped out IC A1 (LM339) and then I could get the cursor moving, but it was still jittery. I swapped out the rest of the IC's and still jittery even on the NIB one. I then thought this was too much of a coincidence and decided to dig out an old 4 port 5200 and hooked up the RF. I would have done this sooner, but I didn't think this was the cause and it's a pain. My other 2 port i had been using has really nice video with the S-video mod I put in. When I put the NIB trak-ball hooked up to the 4 port 5200 it works fine. The issue must be with the 2 port 5200. Anyway, what could be causing this issue with my 2 port 5200? Is there some kind of IC that is responsible for this?
I found a Trak-Ball that is serial number 00249, so I figured it'd be interesting to see what kind of serial numbers are out there. I asked the 5200 facebook group and a bunch of people there gave me the numbers off of their Trak-Balls. Please feel free to post your serial number and any interesting information, like Country of Manufacture and the EP codes. Or, any other code prefixes. Here's the list. https://docs.google.com/spreadsheets/d/1aOaXTLlwIG_rvisCZmIbVjZiZ8-MXtSo0AxY41u3-BU/edit?usp=sharing
Hi, I am David Vella from the small Island of Malta in Europe, approx 60 miles south of Italy. My parents purchased me a TI-99/4A in 1983 when I was still 16. I dabbled with Basic and extended basic writing some slow games, and soon moved on to MSX, Amiga and later PCs making software development my job. In early 2016 for some odd reason I pulled out my TI-99/4A from storage and hooked it up again. It only worked for a few minutes and broke down. To cut a long story short I purchased 3 units and several hardware such a Nano Peb, games etc... In February 2016 I heard about GPL and how it bridges the gap between Basic and Assembly. I though this would be a nice challenge, to write a game using 100% GPL. It took me til November 15th 2016 to finish the game, which is now available from arcade shopper on a custom UBERGROM cart thanks to James Fetzner. The promo video is : https://www.youtube.com/watch?v=hU9SCoX-KoY The Facebook Page to post your high scores : https://www.facebook.com/BreakFreeHOF/ Have fun.