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TI-99/4A Development

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

2,805 topics in this forum

  1. TI-99/4A development resources 1 2 3 4 18

    By retroclouds,   
    • 446 replies
    • 144.6k views

  2. TI and the MiniPro TL866 EPROM Programmer 1 2 3 4 15

    By atrax27407,
    • 368 replies
    • 41.9k views

  3. Pi Pico[W] Peripheral Expansion Box Side Port Device 1 2 3 4 20

    By JasonACT,
    • 489 replies
    • 15.8k views

  4. Camel99 Forth Information goes here 1 2 3 4 73

    By TheBF,   
    • 1.8k replies
    • 83.3k views

  5. Ghostbusters - Development Diary 1 2 3 4 14

    By TheMole,
    • 335 replies
    • 15.5k views

  6. PICO9918 - a TMS9918A drop-in replacement powered by a Pi Pico (RP2040) 1 2 3 4 11

    By visrealm,   
    • 257 replies
    • 11.3k views

  7. TI Mini Expansion System 1 2 3 4 11

    By Artoj,   
    • 252 replies
    • 12.8k views

  8. New SCSI card 1 2

    By Shift838,
    • 49 replies
    • 1.3k views

  9. IDE card usage

    By Vorticon,
    • 15 replies
    • 460 views

  10. XB Game Developers Package 1 2 3 4 43

    By senior_falcon,
    • 1.1k replies
    • 74.8k views

  11. TI professional computer (not ti-99) for now 1 2 3 4 10

    By GDMike,
    • 238 replies
    • 4.1k views

  12. Stevie Development Thread 1 2 3 4 9

    By retroclouds,   
    • 213 replies
    • 17.9k views

  13. Ultimate99 Project

    By stevee671,
    • 12 replies
    • 412 views

  14. "Pi Pico 2" - Pre-Development projects discussion 1 2 3

    By Duewester,   
    • 52 replies
    • 1.5k views

  15. Looking for info on pin 21 (ALPHA LOCK) use and the CRU

    By jschultzpedersen,
    • 4 replies
    • 104 views

  16. What if? Designing "Geneve 2020". Cool 3D views! 1 2 3 4 22

    By FarmerPotato,
    • 542 replies
    • 32.2k views

  17. New game: Stealth Runner 1 2

    By Eric Lafortune,   
    • 29 replies
    • 885 views

  18. Repository for schematics, hardware development, PCB design

    By HackMac,   
    • 19 replies
    • 3.3k views

  19. TI-GROMmy, the system GROM replacement 1 2 3 4 8

    By speccery,
    • 187 replies
    • 10.2k views

  20. fbForth—TI Forth with File-based Block I/O [Post #1 UPDATED: 06/05/2024] 1 2 3 4 84

    By Lee Stewart,   
    • 2.1k replies
    • 123.1k views

  21. Full Speech Replacement card

    By Shift838,
    • 3 replies
    • 193 views

  22. CVBasic Target 1 2

    By Tursi,
    • 32 replies
    • 862 views

  23. TIPI - TI-99/4A to Raspberry PI interface development 1 2 3 4 67

    By jedimatt42,
    • 1.7k replies
    • 110.2k views

  24. Introducing APEDSK99: Arduino DSR shield / SD DSKx emulator

    By JJB,
    • 12 replies
    • 1.9k views

  25. TI(ny)-99/4A Computer 1 2 3 4 14

    By fabrice montupet,
    • 345 replies
    • 40.4k views

  26. GCC for the TMS9900 (new thread)

    By MarkB,
    • 23 replies
    • 757 views

  27. Minimal Apollo lunar lander simulation in console basic WIP 1 2

    By tibasic,
    • 29 replies
    • 1.2k views

  28. TF, camel, FB Forth fun 1 2 3 4 10

    By GDMike,
    • 227 replies
    • 7.6k views

  29. Substantial Forth example programs (games)?

    By neglectoru,
    • 21 replies
    • 1.4k views

  30. Multicolor mode - the mode nobody wanted 1 2 3 4 10

    By Asmusr,   
    • 232 replies
    • 18.8k views

  31. Was the TI99/4A - 2nd VDP ready?

    By Artoj,
    • 17 replies
    • 428 views

  32. The World of Ada at TI

    By FarmerPotato,
    • 11 replies
    • 401 views

  33. Has anyone built a FlashROM 99 on their own?

    By CAJoeG,
    • 9 replies
    • 254 views

  34. Gridslugger - Game in progress (compiled XB) 1 2 3

    By Bones-69,
    • 68 replies
    • 5.6k views

  35. Assembly on the 99/4A 1 2 3 4 96

    By matthew180,
    • 2.4k replies
    • 153k views

  36. Disk Manager II Source Code

    By dhe,
    • 1 reply
    • 110 views

  37. Pascal on the 99/4A 1 2 3 4 43

    By apersson850,   
    • 1.1k replies
    • 58.2k views

  38. Nano PEB Source Files Released

    By Shift838,
    • 16 replies
    • 747 views

  39. New Tunnels of Doom engine? 1 2 3

    By adamantyr,
    • 56 replies
    • 2.2k views

  40. Geneve OS development discussion 1 2 3 4 28

    By InsaneMultitasker,   
    • 682 replies
    • 30.6k views

  41. 838 - IO Card (Flex Interface card replacement!) 1 2 3 4 5

    By Shift838,
    • 118 replies
    • 6.1k views

  42. Rs232 handshake

    By Vorticon,
    • 19 replies
    • 359 views

  43. AI Based TI-99 Development is a thing! 1 2

    By unhuman,
    • 47 replies
    • 1.7k views

  44. XOP operation eludes me

    By jschultzpedersen,
    • 22 replies
    • 415 views

  45. Idea: Assembler with Algebraic Instructions

    By FarmerPotato,
    • 2 replies
    • 119 views

  46. Force Command : kinda like command.com from 1985 (no TIPI required!) 1 2 3 4 35

    By jedimatt42,
    • 857 replies
    • 81.3k views

  47. GCC for the TI 1 2 3 4 47

    By insomnia,
    • 1.2k replies
    • 97.2k views

  48. The NEW - TI 99/4A/2024 - A Dream!

    By oddemann,
    • 21 replies
    • 880 views

  49. Testing for current screen mode 1 2

    By jschultzpedersen,
    • 39 replies
    • 1k views

  50. Musings on 99000 macro code 1 2 3 4 6

    By pnr,   
    • 143 replies
    • 8.7k views

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