Atari 7800 Programming

523 topics in this forum

1. sprite data to color mapping ** updated **

   By EricBall, November 15, 2017
   • 1 reply
   • 1,524 views
   • 
   • MrFish
   • February 9, 2019

2. 7800 Basic 1 2

   By Lavalamp, September 18, 2018   

   • 7800
   • BASIC
   • (and 1 more)

     Tagged with:

     • 7800
     • BASIC
     • Variables
   • 30 replies
   • 1,505 views
   • 
   • Dalta
   • December 17, 2018

3. Compiling and Debugging a program

   By rebmaboss, July 3, 2011
   • 6 replies
   • 1,481 views
   • 
   • cdoty
   • July 24, 2011

4. AtariVox Speech Test Utility

   By Atarius Maximus, October 21, 2015
   • 1 reply
   • 1,480 views
   • 
   • gambler172
   • October 24, 2015

5. MESS 0.153... more accuracy for 7800 emulation

   By RevEng, April 7, 2014
   • 2 replies
   • 1,476 views
   • 
   • DanBoris
   • April 8, 2014

6. 7800 TIA SFX Library, sound2tia 1 2

   By RevEng, February 1, 2020
   • 34 replies
   • 1,476 views
   • 
   • BydoEmpire
   • February 11

7. Need More Time

   By Roy, January 19, 2016
   • 10 replies
   • 1,451 views
   • 
   • Roy
   • January 23, 2016

8. Atari ST or Amiga Mouse on 7800. Possible?

   By Synthpopalooza, June 23, 2017
   • 9 replies
   • 1,451 views
   • 
   • Lynxpro
   • August 5, 2017

9. Graphics Demo of Congo Bongo 1 2

   By splendidnut, March 6
   • 29 replies
   • 1,447 views
   • 
   • TrekMD
   • April 19

10. character maps in rom

    By RevEng, February 19, 2014
    • 20 replies
    • 1,443 views
    • 
    • CPUWIZ
    • February 25, 2014

11. required code for every 7800 program - need help understanding.

    By xucaen, October 20, 2015
    • 13 replies
    • 1,443 views
    • 
    • xucaen
    • October 22, 2015

12. A Roach in Space part II: Cosmic Bugaloo (wip)

    By vhzc, October 16, 2020
    • 24 replies
    • 1,436 views
    • 
    • SlidellMan
    • March 27

13. Graphics hacking. Where to start?

    By Inky, May 11, 2016
    • 14 replies
    • 1,412 views
    • 
    • gambler172
    • May 16, 2016

14. My tinkering with the A7800

    By Atarigmr, April 20, 2012
    • 7 replies
    • 1,402 views
    • 
    • EricBall
    • April 20, 2012

15. 7800 Random Maze Generator

    By Atarius Maximus, September 1, 2017
    • 1 reply
    • 1,379 views
    • 
    • Atarius Maximus
    • September 1, 2017

16. The XM Dev Thread 1 2

    By RevEng, February 28, 2020
    • 28 replies
    • 1,378 views
    • 
    • tep392
    • April 16, 2020

17. Yet Another Scrolling Demo

    By Mord, May 14, 2019   

    • scrolling
    • collision detection
    • (and 1 more)

      Tagged with:

      • scrolling
      • collision detection
      • 7800basic
    • 18 replies
    • 1,374 views
    • 
    • Mord
    • October 22, 2020

18. Where to put the Display List?

    By xucaen, October 24, 2015
    • 9 replies
    • 1,373 views
    • 
    • EricBall
    • October 26, 2015

19. Ramona dev carts

    By Gandor, May 16, 2012
    • 3 replies
    • 1,370 views
    • 
    • Mitch
    • May 17, 2012

20. Slide Boy in Maze Land 7800 version 1 2

    By vhzc, May 2
    • 47 replies
    • 1,370 views
    • 
    • -^CrossBow^-
    • 8 hours ago

21. Question about Maria and custom cartridge chips?

    By willbilly, November 15, 2018
    • 19 replies
    • 1,367 views
    • 
    • SlidellMan
    • October 12, 2020

22. Drawing without Sprites in 7800basic (line drawing function)

    By M12, August 18, 2015
    • 7 replies
    • 1,365 views
    • 
    • Mord
    • August 27, 2015

23. Any tips, tricks or tools for Mateos flash cart?

    By Gemintronic, August 19, 2016
    • 4 replies
    • 1,357 views
    • 
    • Trebor
    • August 28, 2016

24. Please help steer a newbie in the correct direction.

    By JohnnyRockets, April 23, 2012
    • 5 replies
    • 1,353 views
    • 
    • LidLikesIntellivision
    • April 23, 2012

25. Anyone Interested in Doing Art for an Original Game?

    By BydoEmpire, November 10, 2017
    • 7 replies
    • 1,335 views
    • 
    • kiwilove
    • July 1, 2018

26. making sprites for 7800 basic in photoshop?

    By Savage38, October 8, 2016
    • 8 replies
    • 1,321 views
    • 
    • Savage38
    • October 20, 2016

27. SOUPER Mapper

    By TailChao, December 12, 2018
    • 7 replies
    • 1,309 views
    • 
    • TailChao
    • October 9, 2020

28. Who has working source code for accessing the SaveKey on the 7800?

    By CPUWIZ, January 2, 2014
    • 5 replies
    • 1,305 views
    • 
    • RevEng
    • March 6, 2015

29. TIA Chip Question...for our programming folks

    By StephenJ, September 21, 2017
    • 11 replies
    • 1,298 views
    • 
    • StephenJ
    • September 23, 2017

30. 7800 HSC Format Breakdown

    By RevEng, December 6, 2014
    • 5 replies
    • 1,297 views
    • 
    • RevEng
    • December 7, 2014

31. Character flipping for extra colors - a primer

    By Synthpopalooza, June 21, 2019
    • 23 replies
    • 1,293 views
    • 
    • Synthpopalooza
    • July 18, 2019

32. When exactly does the DLL / DL get read and processed?

    By PacManPlus, October 5, 2014
    • 18 replies
    • 1,292 views
    • 
    • PacManPlus
    • October 27, 2014

33. The Intellivision Crowd Noise?

    By Jaynz, September 4, 2012
    • 5 replies
    • 1,288 views
    • 
    • Jaynz
    • September 12, 2012

34. Assembling .a, .S files; .bas files; Fixed point; Functions; Questions?

    By M12, June 26, 2015   

    • compiling
    • interpreting
    • (and 3 more)

      Tagged with:

      • compiling
      • interpreting
      • assembling
      • fixed point
      • functions
    • 14 replies
    • 1,281 views
    • 
    • M12
    • July 12, 2015

35. Trying to get sample working

    By xucaen, January 1, 2015
    • 10 replies
    • 1,274 views
    • 
    • xucaen
    • October 22, 2015

36. CTRL register's Character Width bit

    By ArcadeAction, April 30, 2017
    • 3 replies
    • 1,269 views
    • 
    • ArcadeAction
    • April 30, 2017

37. Dragonfly Pokeymax Covox 1 2

    By playsoft, March 27
    • 40 replies
    • 1,267 views
    • 
    • playsoft
    • April 5

38. Coneay's Game of Life

    By gambler172, February 28, 2015
    • 8 replies
    • 1,256 views
    • 
    • danwinslow
    • July 23, 2015

39. 320B color question 1 2 3

    By Lillapojkenpåön, November 8, 2020
    • 53 replies
    • 1,253 views
    • 
    • RevEng
    • November 14, 2020

40. Quick Question: Does 7800basic have bit shift operators?

    By M12, August 27, 2015   

    • left
    • right
    • (and 5 more)

      Tagged with:

      • left
      • right
      • shift
      • logical
      • arithmetic
      • bit
      • 7800basic
    • 3 replies
    • 1,248 views
    • 
    • RevEng
    • August 29, 2015

41. Let's get this party started

    By Retro Lord, February 15, 2015
    • 8 replies
    • 1,241 views
    • 
    • frankodragon
    • February 21, 2015

42. Creating games in BASIC

    By tacha, October 24, 2015   

    • Creating games in BASIC
    • 2 replies
    • 1,240 views
    • 
    • MobiusAqua
    • October 24, 2015

43. Illegal Opcodes

    By Roy, March 12, 2016   

    • assembly
    • 3 replies
    • 1,223 views
    • 
    • xxl
    • March 13, 2016

44. 320B Background with 160(A or B) Sprites?

    By PacManPlus, April 9, 2018
    • 7 replies
    • 1,216 views
    • 
    • SlidellMan
    • April 12, 2018

45. Please explain content of Atari 7800 cartridge ROM

    By unebonnevie, December 28, 2017
    • 6 replies
    • 1,210 views
    • 
    • jericho_21
    • February 1, 2019

46. Programmers. Want an autograph cartridge?

    By neotokeo2001, August 9, 2014
    • 9 replies
    • 1,197 views
    • 
    • Jinks
    • September 28, 2014

47. Sample code for 24bit value checks and randomization

    By Atarius Maximus, August 11, 2017
    • 0 replies
    • 1,192 views
    • 
    • Atarius Maximus
    • August 11, 2017

48. Counter Problem

    By frankodragon, January 9, 2015   

    • 7800Basic
    • 5 replies
    • 1,184 views
    • 
    • frankodragon
    • January 12, 2015

49. Some noob 7800 questions

    By ArcadeAction, July 31, 2016
    • 3 replies
    • 1,176 views
    • 
    • DanBoris
    • August 6, 2016

50. Any 7800 tinkerer without a SaveKey?

    By CPUWIZ, June 10, 2017
    • 9 replies
    • 1,167 views
    • 
    • Lynxpro
    • August 5, 2017