#TMS9900 hashtag - Bluesky

@blakespot.bsky.social

3 months ago

Texas Instruments 99/4A computer ad from a True Value Hardware Store

Entertaining ideas for The Holidays, from True Value Hardware Store!

#TI994A

#UnexpectedComputer #TI #TexasInstruments #TI99 #computers #vintagecomputing #retrocomputing #vintageads #TrueValue #Holidays #Christmas #giftideas #nostalgia #scan #photo #TMS9900 #retrocomputer

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Hackaday

@hackaday.com.web.brid.gy

4 months ago

TMS9900-based Home Brew Computer Usagi Electric] is known for minicomputers, but in a recent video, he shows off his TMS9900-based homebrew computer. The TMS9900 CPU was an early 16-bit CPU famously used in the old […read more

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GaryOPA

@garyopa.bsky.social

9 months ago

Back in the day, this book helped me learn the #TMS9900 CPU, more than some other books out there at the time, so I recommend it to anyone that wants to start learning Assembly for the #TI99.

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Tadashi G. Takaoka

@tgtakaoka.bsky.social

1 year ago

https://github.com/tgtakaoka/retro-bionic/blob/main/schematics/tms9981/bionic-tms9981.pdf

https://github.com/tgtakaoka/retro-bionic/blob/main/debugger/tms9900/pins_tms9981.cpp

Bionic implementation of TMS9981 has done. Clock freq. is ~7MHz.
Too many bus cycles are observed unexpectedly because registers are in main memory and 8-bit bus width. The speed of Mandelbot seems rather fast thanks to MPY and DIV instructions.
#TMS9900

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