TI-99/4A Development

2,809 topics in this forum

1. Simple 8k supercart process

   By GDMike, January 17, 2019
   • 2 replies
   • 280 views
   • 
   • GDMike
   • January 17, 2019

2. multiply by .0375

   By tschak909, January 16, 2019
   • 20 replies
   • 1.3k views
   • 
   • adamantyr
   • January 17, 2019

3. A better CALL COINC (For XB compiler?)

   By Bones-69, January 11, 2019
   • 13 replies
   • 1.2k views
   • 
   • Bones-69
   • January 16, 2019

4. DSR error 0094 when I try to use COPY directive in E/A II 1 2 3 4

   By hhos, December 7, 2018
   • 77 replies
   • 4k views
   • 
   • hhos
   • January 15, 2019

5. Are the schematics of TI99/4A accurate? Schematics for beige console

   By hhos, January 9, 2019   

   • Schematics
   • 10 replies
   • 2.1k views
   • 
   • fabrice montupet
   • January 13, 2019

6. TMS9900 data bus during instruction execution

   By FarmerPotato, January 7, 2019   

   • tms9900
   • cpu
   • 6 replies
   • 888 views
   • 
   • mizapf
   • January 9, 2019

7. TI-99/4A Theremin

   By Stuart, December 29, 2018
   • 10 replies
   • 739 views
   • 
   • Stuart
   • December 30, 2018

8. F18A 30 rows/80 columns mode?

   By retroclouds, December 2, 2018   

   • F18A
   • 30 rows/80 columns
   • (and 2 more)

     Tagged with:

     • F18A
     • 30 rows/80 columns
     • 9900
     • asm
   • 14 replies
   • 1.3k views
   • 
   • matthew180
   • December 29, 2018

9. F18A high-resolution timer

   By retroclouds, December 24, 2018   

   • f18a
   • high-resolution timer
   • 3 replies
   • 721 views
   • 
   • matthew180
   • December 29, 2018

10. 80 columns with XB

    By senior_falcon, December 24, 2018
    • 2 replies
    • 464 views
    • 
    • arcadeshopper
    • December 26, 2018

11. The Mummy's Tomb 1 2 3

    By Retrospect, September 20, 2018
    • 53 replies
    • 3.4k views
    • 
    • Charlie_
    • December 22, 2018

12. Bug Log: Behavior of a Short Between A2 and A15

    By FarmerPotato, December 12, 2018
    • 7 replies
    • 426 views
    • 
    • FarmerPotato
    • December 17, 2018

13. SCART-GENIE V1.0 1 2 3 4

    By Shift838, January 16, 2018
    • 87 replies
    • 6.1k views
    • 
    • Swim
    • December 11, 2018

14. TI-99/4A Timing Captures

    By Tursi, July 1, 2018
    • 9 replies
    • 1.2k views
    • 
    • FarmerPotato
    • December 10, 2018

15. xb256 - Limit charset definition?

    By gekido_ken, November 30, 2018
    • 16 replies
    • 871 views
    • 
    • LASooner
    • December 5, 2018

16. 5V pins in PIO interface

    By ralphb, December 1, 2018   

    • PIO
    • 4 replies
    • 364 views
    • 
    • TheBF
    • December 4, 2018

17. XB256 - Which address for VDP signal on/off? 1 2

    By gekido_ken, November 27, 2018
    • 26 replies
    • 1.5k views
    • 
    • senior_falcon
    • December 4, 2018

18. Twinkling stars

    By Retrospect, November 29, 2018
    • 6 replies
    • 371 views
    • 
    • Retrospect
    • November 29, 2018

19. DSK to Disk drive creator/writer

    By 9640News, November 27, 2018
    • 4 replies
    • 246 views
    • 
    • mizapf
    • November 27, 2018

20. CRU scan sample code

    By retroclouds, November 4, 2018   

    • CRU
    • device scan
    • (and 1 more)

      Tagged with:

      • CRU
      • device scan
      • tms9900
    • 14 replies
    • 1k views
    • 
    • Ksarul
    • November 23, 2018

21. PAL Repository

    By atrax27407, November 12, 2018
    • 11 replies
    • 854 views
    • 
    • atrax27407
    • November 23, 2018

22. Fast Simple Combsort in BASIC 1 2

    By TheBF, September 27, 2017
    • 36 replies
    • 2.7k views
    • 
    • TheBF
    • November 21, 2018

23. TI99 format disk program... help... 1 2

    By ti99iuc, November 28, 2011
    • 25 replies
    • 4.9k views
    • 
    • arcadeshopper
    • November 18, 2018

24. Brain lapse

    By Opry99er, November 15, 2018
    • 22 replies
    • 1.2k views
    • 
    • RXB
    • November 18, 2018

25. MIPS 1 2

    By sometimes99er, March 8, 2016   

    • 9900
    • Z80A
    • (and 1 more)

      Tagged with:

      • 9900
      • Z80A
      • 6502
    • 33 replies
    • 3.8k views
    • 
    • Asmusr
    • November 10, 2018

26. New Basic game: Captain Scram

    By tibasic, October 1, 2018
    • 19 replies
    • 1.2k views
    • 
    • tibasic
    • November 9, 2018

27. Concatenative Language Video

    By TheBF, November 6, 2018
    • 1 reply
    • 210 views
    • 
    • Lee Stewart
    • November 6, 2018

28. Jewel Of Seven Stars

    By Retrospect, October 29, 2018
    • 16 replies
    • 1.1k views
    • 
    • arcadeshopper
    • November 2, 2018

29. TIPI and MDOS Development

    By 9640News, October 30, 2018
    • 0 replies
    • 308 views
    • 
    • 9640News
    • October 30, 2018

30. Red Planet Rescue 1 2

    By Retrospect, October 11, 2018
    • 28 replies
    • 2.1k views
    • 
    • Retrospect
    • October 29, 2018

31. The Missing Link

    By Vorticon, October 24, 2018
    • 14 replies
    • 1.1k views
    • 
    • RXB
    • October 28, 2018

32. TIImageTool 1.5 1 2

    By mizapf, August 1, 2013   

    • TIImageTool
    • 37 replies
    • 3.6k views
    • 
    • InsaneMultitasker
    • October 22, 2018

33. Specialized file access from XB 1 2 3 4

    By Vorticon, October 12, 2018
    • 79 replies
    • 2.6k views
    • 
    • HOME AUTOMATION
    • October 20, 2018

34. Protoboards

    By nuxi, September 28, 2018
    • 13 replies
    • 893 views
    • 
    • Ksarul
    • October 14, 2018

35. Something I didn't know until now. (XB Compiler)

    By Retrospect, October 5, 2018
    • 7 replies
    • 528 views
    • 
    • LASooner
    • October 13, 2018

36. Nebulus/Tower Toppler game 1 2 3

    By Asmusr, April 26, 2018
    • 50 replies
    • 6.2k views
    • 
    • HOME AUTOMATION
    • October 10, 2018

37. libti99 rs232_writebyte not sending...

    By tschak909, October 6, 2018
    • 11 replies
    • 413 views
    • 
    • Tursi
    • October 7, 2018

38. TI-99/4A with a Pipistrello FPGA board 1 2 3 4 12

    By speccery, August 13, 2016
    • 297 replies
    • 27.1k views
    • 
    • speccery
    • September 30, 2018

39. NEW Game demo Lots of Hearts

    By 1980gamer, September 23, 2018
    • 10 replies
    • 566 views
    • 
    • 1980gamer
    • September 27, 2018

40. Avaris

    By Retrospect, August 20, 2018
    • 9 replies
    • 1.3k views
    • 
    • jedimatt42
    • September 25, 2018

41. is this viable / possible on the TI99/4A? using XB

    By 1980gamer, September 8, 2018
    • 21 replies
    • 954 views
    • 
    • RXB
    • September 23, 2018

42. Sprite library

    By Bones-69, August 21, 2018
    • 8 replies
    • 1.2k views
    • 
    • sometimes99er
    • September 18, 2018

43. This should be a simple question

    By 1980gamer, September 14, 2018
    • 18 replies
    • 793 views
    • 
    • TheBF
    • September 17, 2018

44. Sound/music on the TI-99/4A

    By mos6502, September 12, 2013
    • 2 replies
    • 956 views
    • 
    • Schmitzi
    • September 16, 2018

45. Saving Rom Cartridge

    By 9640News, September 12, 2018
    • 6 replies
    • 590 views
    • 
    • FarmerPotato
    • September 13, 2018

46. Generating random numbers, without the TI's randomization routines?

    By jrhodes, September 8, 2018
    • 14 replies
    • 965 views
    • 
    • Tursi
    • September 12, 2018

47. Fixing a bad 32k card

    By Mad Hatter, November 30, 2010
    • 23 replies
    • 1.7k views
    • 
    • TheBF
    • September 11, 2018

48. Speech synthesizer internal port

    By jrhodes, July 4, 2018
    • 9 replies
    • 1.1k views
    • 
    • helocast
    • September 7, 2018

49. Web-like browser and server for 8 bit computers

    By 9640News, August 9, 2018
    • 12 replies
    • 1.1k views
    • 
    • arcadeshopper
    • September 3, 2018

50. DSR CLOCK device and any program that used it with standard DSRLNK access?

    By jedimatt42, August 31, 2018
    • 7 replies
    • 3.2k views
    • 
    • InsaneMultitasker
    • September 1, 2018