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TI-99/4A Development

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

2,753 topics in this forum

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

    By atrax27407,
    • 366 replies
    • 38.9k views

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

    By retroclouds,   
    • 444 replies
    • 140.5k views

  3. XB PseudoRandom Number Generator Discussion—RND and RANDOMIZE

    By Lee Stewart,   
    • 2 replies
    • 40 views

  4. Pascal on the 99/4A 1 2 3 4 38

    By apersson850,   
    • 943 replies
    • 49.5k views

  5. Another "Bad Apple" demo 1 2 3

    By Eric Lafortune,
    • 73 replies
    • 3.2k views

  6. Pi Pico[W] Peripheral Expansion Box Side Port Device 1 2 3 4 15

    By JasonACT,
    • 356 replies
    • 8.9k views

  7. Cherry MX compatible upgrade for Mitsumi 99/4A keyboards 1 2

    By visrealm,   
    • 33 replies
    • 937 views

  8. Nano PEB Source Files Released

    By Shift838,
    • 10 replies
    • 275 views

  9. Geneve OS development discussion 1 2 3 4 27

    By InsaneMultitasker,   
    • 665 replies
    • 27.1k views

  10. fbForth—TI Forth with File-based Block I/O [Post #1 UPDATED: 06/09/2023] 1 2 3 4 80

    By Lee Stewart,   
    • 2k replies
    • 110.9k views

  11. New SCSI card 1 2

    By Shift838,
    • 43 replies
    • 758 views

  12. TI Mini Expansion System 1 2 3 4 6

    By Artoj,   
    • 145 replies
    • 8k views

  13. RELEASE: Phoenix 2001 Recallit v2.00 by O.P.A.

    By Gary from OPA,
    • 2 replies
    • 147 views

  14. What if? Designing "Geneve 2020". Cool 3D views! 1 2 3 4 21

    By FarmerPotato,
    • 517 replies
    • 28.8k views

  15. TI-99 Infocom Interpreter Dev 1 2 3 4 5

    By InsaneMultitasker,
    • 120 replies
    • 6.1k views

  16. Assembly on the 99/4A 1 2 3 4 91

    By matthew180,
    • 2.3k replies
    • 135.2k views

  17. Playing VGM files in XB (?) 1 2 3

    By ruthven,
    • 50 replies
    • 1.1k views

  18. GCHAR equivalent in UCSD Pascal?

    By LarryFromBuffalo,
    • 17 replies
    • 456 views

  19. The FinalGROM 99 1 2 3 4 32

    By ralphb,
    • 784 replies
    • 81.4k views

  20. Code Conventions for Bank-Switched Cartridges?

    By Kchula-Rrit,   
    • 18 replies
    • 363 views

  21. Problems with SLCOMPILER

    By Cheung,
    • 10 replies
    • 309 views

  22. RELEASE: Phoenix 2001 Diskodex v1.01 by O.P.A.

    By Gary from OPA,
    • 1 reply
    • 164 views

  23. Official TI99 GSIM (Pizza Box) Cartridge Dongle

    By Gary from OPA,
    • 3 replies
    • 149 views

  24. Breadboard or PC Board?

    By Kchula-Rrit,
    • 15 replies
    • 194 views

  25. 3D printed TI99 VGA port for F18A

    By dphirschler,   
    • 15 replies
    • 431 views

  26. RELEASE: 3D String Art v1.0 & Graphics Demo v9938/58 (1988/1990) by Oasis Pensive Abacutors / GARYOPA

    By Gary from OPA,
    • 10 replies
    • 257 views

  27. Self Learning Kicad as I design a FDC/IO card 1 2

    By RickyDean,
    • 38 replies
    • 1.2k views

  28. Camel99 Forth Information goes here 1 2 3 4 70

    By TheBF,   
    • 1.7k replies
    • 73.9k views

  29. TI Adventure Gaming

    By MikeV,   
    • 2 replies
    • 187 views

  30. What is the purpose of the PERMANENT parameter specification in a sub?

    By jschultzpedersen,
    • 22 replies
    • 424 views

  31. Alex Kidd on Miracle Island - Playable Demo 1 2 3 4 6

    By TheMole,
    • 135 replies
    • 12.9k views

  32. Request for PALASM Guru

    By Kchula-Rrit,   
    • 4 replies
    • 140 views

  33. New Tunnels of Doom engine? 1 2

    By adamantyr,
    • 42 replies
    • 1.3k views

  34. Horizon RAMdisk ROS and CFG Development 1 2 3 4 23

    By InsaneMultitasker,   
    • 553 replies
    • 37.6k views

  35. How to test for 32K memory expansion in TMS9900 assembly?

    By adamantyr,
    • 8 replies
    • 234 views

  36. Inexpensive way to try out GALs? 1 2

    By Kchula-Rrit,   
    • 27 replies
    • 593 views

  37. Help Me Find This Component

    By FarmerPotato,
    • 12 replies
    • 295 views

  38. RXB - Rich Extended Basic 1 2 3 4 65

    By Bones-69,
    • 1.6k replies
    • 116.4k views

  39. xdt99: New TI 99 cross-development tools available 1 2 3 4 27

    By ralphb,
    • 669 replies
    • 48.8k views

  40. TIPI - TI-99/4A to Raspberry PI interface development 1 2 3 4 62

    By jedimatt42,
    • 1.5k replies
    • 99.1k views

  41. Floppy Formatter from code, questions...

    By jedimatt42,
    • 9 replies
    • 266 views

  42. New emulator - BuLWiP 1 2

    By PeteE,
    • 41 replies
    • 2.9k views

  43. GCC for the TI 1 2 3 4 46

    By insomnia,
    • 1.1k replies
    • 90.5k views

  44. Paul Urbanus’ write up on Parsec’s smooth scrolling and simultaneous speech during gameplay from Reddit

    By acadiel,
    • 2 replies
    • 164 views

  45. v9t9 TI-99/4A emulator written in java 1 2 3

    By retroclouds,   
    • 70 replies
    • 13.1k views

  46. Eliminating the 4 wait state penalty for memory mapped hardware

    By hhos,
    • 19 replies
    • 532 views

  47. The Joel Test for Software Development

    By TheBF,
    • 1 reply
    • 130 views

  48. Using a laser engraver/cutter to create a PCB

    By Shift838,
    • 2 replies
    • 286 views

  49. Toward a Better (and Better-Documented) DSRLNK 1 2 3 4

    By Lee Stewart,   
    • 85 replies
    • 2.6k views

  50. TI-99/4A Hi-Tek Keyboard Replacement 1 2

    By Nelno,
    • 34 replies
    • 4.9k views

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