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TI-99/4A Computers

Discussion for TI-99/4A Computers

Subforums

  1. Tomy Tutor, CC40, 99/2, 99/8, Cortex, 990 mini

    Subforum for standalone non-4A systems with a 16 bit CPU belonging to the TMS99xxx processor family.

    2.9k
    posts

  2. TI-99/4A Development

    Software and hardware development for the TI-99/4A Computer.

    96.2k
    posts

6,307 topics in this forum

  1. Show off your system 1 2

    By dphirschler,
    • 33 replies
    • 3.6k views

  2. TI-99/4A QI repair - Startup process question

    By Hans23,
    • 3 replies
    • 375 views

  3. TI-99/4a Modification Weekend. 1 2 3 4

    By Sinphaltimus,   
    • 84 replies
    • 7.5k views

  4. Dsk1 drive faulty

    By Eagle4Christ,
    • 7 replies
    • 711 views

  5. YORK PA TI99ers User Group Project 1 2

    By Sinphaltimus,
    • 28 replies
    • 2.3k views

  6. TI-99/4A - Show your modded systems here 1 2 3

    By Schmitzi,   
    • 71 replies
    • 3.8k views

  7. Ti-99/4s showing static

    By SomeRandomEskimo,
    • 13 replies
    • 917 views

  8. Power Brick

    By Preppie,
    • 2 replies
    • 374 views

  9. Oasis Pensive Abacutors (OPA) ROMS in Mame?

    By mnielsenau,
    • 7 replies
    • 756 views

  10. Video on TI-99/4A and others

    By pjduplooy,
    • 0 replies
    • 286 views

  11. All Star Baseball II by Futura

    By Dutchman2000,
    • 24 replies
    • 1k views

  12. The 39th TI-99/4A Annual Chicago TI International World Faire 1 2

    By Airshack,
    • 49 replies
    • 1.9k views

  13. TI 32K PEB expansion problem

    By lolof,
    • 20 replies
    • 1.4k views

  14. TI99 TV?

    By Mockduck,
    • 2 replies
    • 300 views

  15. TI Basic + sprite games 1 2 3 4 6

    By ramidavis,
    • 129 replies
    • 15.4k views

  16. Ships! by Not Polyoptics

    By InfernalKeith,
    • 10 replies
    • 756 views

  17. CF7+ Help and Game Questions

    By Tempest,
    • 4 replies
    • 297 views

  18. PEB disk drive set as DSK2. needs to be DSK1

    By Dutchman2000,
    • 15 replies
    • 679 views

  19. Return to Pirate’s Isle on disk?

    By Dutchman2000,
    • 15 replies
    • 863 views

  20. Found: 4A accessory for typing with mouth stick

    By FarmerPotato,
    • 1 reply
    • 340 views

  21. Heatwave BBS

    By Mad Hatter,
    • 20 replies
    • 4.4k views

  22. Lets see your development / test area! 1 2

    By Shift838,
    • 34 replies
    • 1.7k views

  23. Whereabouts

    By apersson850,
    • 9 replies
    • 788 views

  24. Treasure Trap

    By Vorticon,
    • 2 replies
    • 433 views

  25. Current TI-99/4/4a - Geneve 9640 Related BBS's

    By twoodland,
    • 9 replies
    • 547 views

  26. Massive rescue….

    By acadiel,
    • 20 replies
    • 909 views

  27. SOUND DIGITIZING 1 2

    By sparkdrummer,
    • 27 replies
    • 1.8k views

  28. NanoPEB

    By James app-2008,
    • 23 replies
    • 2.2k views

  29. Data Sheet wanted.

    By atrax27407,   
    • 7 replies
    • 561 views

  30. DAI Personal Computer

    By peterfleeman,
    • 11 replies
    • 1.4k views

  31. F18A in a 99/4, possible?

    By matthew180,   
    • 16 replies
    • 2.4k views

  32. Bar Keepers Friend

    By dhe,
    • 0 replies
    • 279 views

  33. VCF-SE 2021 TI stuff…

    By acadiel,
    • 2 replies
    • 419 views

  34. Firehose reparation

    By gferluga,
    • 5 replies
    • 672 views

  35. TI99/4A Nano PEB - should I get one?

    By stevelanc,
    • 9 replies
    • 1.1k views

  36. Original speech synth with connector photos of guts

    By arcadeshopper,
    • 17 replies
    • 808 views

  37. SCSI Card Update?? 1 2

    By 9640News,
    • 39 replies
    • 1.7k views

  38. TI_HomecomputerAwarenessProgram_Children-Level-III_InstructorsGuide_ComputerAdvantageClub

    By Sinphaltimus,
    • 5 replies
    • 301 views

  39. Can anyone identify this internal 32k RAM extension board?

    By Hans23,
    • 9 replies
    • 599 views

  40. Texas Instruments Home Computer Awareness Program Children-Level II Instructors Guide, Computer Advantage Club

    By Sinphaltimus,
    • 4 replies
    • 290 views

  41. CC9900 CorComp Floppy Disk Controller & FinalGrom99

    By gferluga,
    • 19 replies
    • 895 views

  42. Texas Instruments Home Computer Awareness Program Adults-Level II Instructors Guide, Computer Advantage Club

    By Sinphaltimus,
    • 4 replies
    • 402 views

  43. This old Horizon #3

    By dhe,
    • 19 replies
    • 787 views

  44. Mini Memory Plus V2.0 (1986, by Sebasoft)

    By tmop69,   
    • 1 reply
    • 418 views

  45. Question about TI-99/4A keyboard matrix

    By 8bitAndy,
    • 6 replies
    • 766 views

  46. TI-99/4A's without "Solid State Software" faceplate...

    By PeBo,
    • 16 replies
    • 1.7k views

  47. My network setup - TI-99/4A-Geneve 9640-RS232-PC-TIPI-WiFi-Printer

    By globeron,
    • 0 replies
    • 275 views

  48. Disk access with a Basic Compiler

    By fabrice montupet,
    • 13 replies
    • 783 views

  49. SHIFT838 Turbo Interface Interest Check

    By Shift838,
    • 4 replies
    • 516 views

  50. Myarc RS232 Source Code

    By atrax27407,
    • 2 replies
    • 415 views
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