freetz Posted March 8, 2014 Share Posted March 8, 2014 Hi everyone, last month, I coded a Flappy Bird clone for the 8-Bit Atari, called "Floppy Bird". It differs from other versions mostly because of its small size - less than 1kB. AtariAge-User Aking asked me to do a port for the 5200, and although I've never done that before (and Floppy Bird was my first piece I wrote in 100% assembler after a 20 year hiatus not coding for the Atari), it was easier than I thought. On the 5200 it's obviously larger, 32kB, but contains the same features as the 400/800 version (cooperative two player mode, increasing level of difficulty etc.). The result can be downloaded here as a ROM-file: http://frederik.hol.st/atari/8-bit/mystuff/floppy52.rom It works well in my emulator (Atari800MacX), but I have no means of running it on my original 5200, so maybe someone could test it out. One thing I couldn't get to work was the random number generator (RANDOM, $E80A), it always returns the same number. Thus I had to use a steadily incrementing counter instead. It still works fine, I guess. The 1kB version for the Atari 400/800 can be found here: http://ftp.hol.st/atari/8-bit/mystuff/floppybrd.xex Enjoy ! Frederik 5 Quote Link to comment Share on other sites More sharing options...
Aking Posted March 8, 2014 Share Posted March 8, 2014 had i known you only required 1 link to do the conversion ... :-) great work! super addictive game 1 Quote Link to comment Share on other sites More sharing options...
MAC-42 Posted March 8, 2014 Share Posted March 8, 2014 (edited) This message does not exist. Move along please. Edited March 8, 2014 by MAC-42 1 Quote Link to comment Share on other sites More sharing options...
Charlie_ Posted March 8, 2014 Share Posted March 8, 2014 Thanks! Quote Link to comment Share on other sites More sharing options...
jetset Posted March 9, 2014 Share Posted March 9, 2014 Has anyone tried it on real hardware? It won't run for me. Quote Link to comment Share on other sites More sharing options...
freetz Posted March 9, 2014 Author Share Posted March 9, 2014 Thanks to a hint from Paul Lay, I changed the ROM file now so that it includes the proper boot screen. It still contains the diagnostic code byte, but copies the initialization routine from the ROM and patches it according to the code I found in this forum. Could someone please let me know if it works on a real machine now? I only have a Atari800MacX to test it and it runs fine both ways, so this does not seem to be a good indicator. Would have loved to have a SD-card adapter, so I can test it on my real 5200 ... Best, Frederik Quote Link to comment Share on other sites More sharing options...
Aking Posted March 9, 2014 Share Posted March 9, 2014 (edited) well , did some extensive testing atari 800win works great Altirra works with no sound real 5200 4port and 2 port with ultimate sd carts one and a half second black screen (needs the title andFuji Logo screen) then working with no sound like on altirra Edited March 9, 2014 by Aking Quote Link to comment Share on other sites More sharing options...
freetz Posted March 9, 2014 Author Share Posted March 9, 2014 (edited) Strange... seems it's more complicated than I thought ... Paul Lay reported the same and suggested to reset POKEY by writing 0 and 2 to SKCTL (E80F). I haven't been writing the 2 to SKCTL yet, but now I write zeros to all POKEY, ANTIC and GTIA registers before and after the modified splash screen logo. New version is ready for download on my server, same link. If there is still no sound, could anyone just change the diagnostic code byte (BFFD) to FF and see if the sound is then working on a real machine? Too bad Altirra does not exist for Mac, otherwise I could do some pre-testing myself with that emulator (one of the few programs I really miss on my Mac). Edited March 9, 2014 by freetz Quote Link to comment Share on other sites More sharing options...
+Allan Posted March 9, 2014 Share Posted March 9, 2014 Strange... seems it's more complicated than I thought ... Paul Lay reported the same and suggested to reset POKEY by writing 0 and 2 to SKCTL (E80F). I haven't been writing the 2 to SKCTL yet, but now I write zeros to all POKEY, ANTIC and GTIA registers before and after the modified splash screen logo. New version is ready for download on my server, same link. If there is still no sound, could anyone just change the diagnostic code byte (BFFD) to FF and see if the sound is then working on a real machine? Too bad Altirra does not exist for Mac, otherwise I could do some pre-testing myself with that emulator (one of the few programs I really miss on my Mac). I just tried it on a real 5200. 1. There is no sound. 2. It starts and you can start flapping your bird and play the game but unlike the 8-bit version which you go for a bit in the beginning with no rocks, you see rocks on the bottom for a bit (sometimes) and then you see the full length rocks appear on the top and bottom like the 8-bit version. Sometimes you will get these small rocks and sometimes you won't. It seems to be different when you shut the 5200 and turn it on again. So maybe it's the state of certain registers when you turn on the 5200. Hope this helps. And thanks for writing the game and converting it. It took me a couple of times before I caught the thing in the splash screen. Allan Quote Link to comment Share on other sites More sharing options...
freetz Posted March 11, 2014 Author Share Posted March 11, 2014 Thank you all for testing, especially Paul. With his help I think I got to the root of the problem - at least now there is sound on the Altirra emulator which I got up and running on my Mac thanks to WineBottler. Also, I hope that there are now no more stray rocks on the screen. It seems that the splash screen routine seems to leave quite a few areas of memory "dirty", thus I had to run a memory wipe again after the splash screen. In case you have two controllers, please also check whether two player mode is working (started by pressing the fire button on the second controller first to start the game). The updated version is available on my server as of now, same link, same filename. 1 Quote Link to comment Share on other sites More sharing options...
Charlie_ Posted March 12, 2014 Share Posted March 12, 2014 Thank you all for testing, especially Paul. With his help I think I got to the root of the problem - at least now there is sound on the Altirra emulator which I got up and running on my Mac thanks to WineBottler. Also, I hope that there are now no more stray rocks on the screen. It seems that the splash screen routine seems to leave quite a few areas of memory "dirty", thus I had to run a memory wipe again after the splash screen. In case you have two controllers, please also check whether two player mode is working (started by pressing the fire button on the second controller first to start the game). The updated version is available on my server as of now, same link, same filename. I was able to play the 1st level. Sound worked, but I didn't do very well... I think 15 was all I've scored so far. Quote Link to comment Share on other sites More sharing options...
zylon Posted March 13, 2014 Share Posted March 13, 2014 I was able to play the 1st level. Sound worked, but I didn't do very well... I think 15 was all I've scored so far. Best I've got was 7. Quote Link to comment Share on other sites More sharing options...
Aking Posted March 21, 2014 Share Posted March 21, 2014 73 1 Quote Link to comment Share on other sites More sharing options...
walter_J64bit Posted March 26, 2014 Share Posted March 26, 2014 (edited) Have all the bugs been worked out yet? Edited March 26, 2014 by walter_J64bit Quote Link to comment Share on other sites More sharing options...
Charlie_ Posted March 26, 2014 Share Posted March 26, 2014 Have all the bugs been worked out yet? Yup. Grab it from here: ftp://frederik.hol.st/atari/8-bit/mystuff/floppy52.rom Or the link in the 1st thread post. Fun game. There is another just like it... but I forget the name... I'll have to look at my SD cart tonight 1 Quote Link to comment Share on other sites More sharing options...
Shawn Posted April 8, 2014 Share Posted April 8, 2014 links are dead?? Quote Link to comment Share on other sites More sharing options...
freetz Posted April 8, 2014 Author Share Posted April 8, 2014 Sorry, had to move my server (rather: still in the process), but thanks for the hint, now the FTP server is up and running again. Let me know if there are any further issues... F. Quote Link to comment Share on other sites More sharing options...
freetz Posted May 28, 2014 Author Share Posted May 28, 2014 Hi everyone, too bad I cannot edit my own posts, but due to reducing security holes, I am going to deactivate my ftp server in the near future. However all content will remain accessible at the same URL as a web service, i.e. only change ftp:// to http:// http://frederik.hol.st/atari/8-bit/mystuff Cheers, F. Quote Link to comment Share on other sites More sharing options...
thegamezmaster Posted May 29, 2014 Share Posted May 29, 2014 Thanks for the game! Great work! 1 Quote Link to comment Share on other sites More sharing options...
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