Very nice commentary by #QuinnDunki (https://blondihacks.com/) on #DaveLovett #UsagiElectric's #tms9900 #HomebrewComputer on @rcrpodcast.

https://www.youtube.com/watch?v=FwNAgOZQcmQ&t=3030

#ti994a #retrocomputing #vintagecomputing

I attended the #vcfsw in Dallas at the UTDallas campus this weekend. Quite a show! It's considerably smaller than those in Chicago or New Jersey, but still an excellent opportunity to see some vintage hardware in person and attend presentations from some original creators in the industry. The primary focus this year was #texasinstruments and the #TMS9900 and #TMS9918 chips.

#retro #retrocom8uting #retrocomputing #ti

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https://makertube.net/videos/watch/712c9fcf-752a-4851-a2f9-4f208cd63ec8

This is a '99er.

Check out this TI-99/4A setup ... collection ... room. It's the most impressive TI-99 situation I've ever beheld. Just, wow. Posted by John Carr on Facebook, showing the culmination of his lifetime of collecting.

#TI994April

https://www.facebook.com/share/p/W3tZYPPRGCbKeMbp/?mibextid=K35XfP

#TI99 #TI994A #retrocomputing #vintagecomputing #nostalgia #vintagetech #tech #collecting #collection #photos #gallery #TI #TMS9900 #TMS9918 #cartridges #computerroom

Hey, big guy. #retrocomputing #tms9900 #m68k #x86

It sure does look good, but it doesn't work. And I believe bad breadboards are the problem. :-( The displayed voltage is the ground pin on an arbitrarily chosen logic chip, with reference to the primary power rail very close to the input supply.

I see ground return resistance voltage lifts of between 0.1 and 0.7 V on many chips on this board. I'm increasingly confident that is the reason that this board does not boot and displays unreliable behavior.

#retrocomputing #homebrew #tms9900