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Do you think that the CPU is fast enough to do something like this? https://www.youtube.com/watch?v=_gMYcna5OiA

The smooth animations of "Prince of Persia" are state of the art. A conversion like that of apple 2 would make justice to the unfortunate atari 8-bit.

What? Are you porting the Sentinel for Atari or it's a joke? It's one of my favourite games! Please post on Youtube the work in progress.

When the Atari 800 was programmed very well it gave excellent results. In the comparison of the game Ballblazer, the Atari 800 wins between the 8-bit computers. https://www.youtube.com/watch?v=larhB9OAdz4 Unfortunately it was more profitable implement video games for the C64, so many titles were missing for Atari 8-bit. Are there some games for C64 that are not convertible because the atari hardware have limitations?

There is a case of demo coders that when they decided to coding a game they made one of the best game for Atari (see Yoomp).

Do exist undocumented instructions of Antic? I heard about undocumented instruction of 6502 but nothing of Antic. I am a very curious person

Here there are very experienced programmers; in the scene why do they use their skills to make demos and not games? It is easier to do demo?

Thank you very much

Thank you Tezz. Umh...I'm not sure the table mentioned above is applicable to Sally. I remember that indirect addressing was very slow on atari 8 bit (about 40 cycles) and that table is a lot optimistic...but may be I remember incorrectly.

Hi friends, Where can I find the table of cycles for each instruction of the cpu? Thanks

I think one of the games easiest to convert should be Prohibition by Infogrames. Strange it is missing for Atari 8-bit. http://www.youtube.com/watch?v=fNklYh5LUJU

Sorry for mistake, I meant "his tutorials".

Hello everyone. I want to thank Jac for his efforts; its tutorials and wudsn ide are essential for a beginner like me. Thanks to Jac I discovered the fun of programming in assembly. Gosh, it's so hard programming the Atari 8-bit ... all tutorials for me are welcome. Thank you. P. S. In this forum I found many people so kind; I also thank Flashjazzcat and all the people who I don't remember.

Hi, Does exist some peripheral for expansion port of a 130xe? I never found one also in the tube.

Atari should have historical games like "Prince of Persia", "The Last Ninja", "Pacmania." I can't believe an Atari 8-bit does not have enough power for these games.

I found a very very good coding tutorial! http://codebase64.org/doku.php But it is for Commodore 64. Is there nothing similar for Atari 8 bit?

Printf is not slow is very slow but I think is slow the put char routine of the operative system that printf use. Of course passing data by stack is slow but source code is more readable. There is a margin of improvement in C language but the best is a jump to the hell and use assembly .

Hello Everyone! Forget the old version, the new one is much better!!! I've improve the generator and now 10000 numbers are processed in about 70 seconds. I share the source code; it is not commented but it should be easy to understand. I use C language, in Basic language this performance is impossible. Have fun...change it and improve it!!! Good bye ataprime.xex primi.zip

Hi guys. Some one on you tube posted a video that show the difference between an atari 8 bit and a moder pc. In his video the atari take about 3 days to find prime numbers until 10000. I respond to that video with my program. I use a serious language and my program takes about 2 minuts to do the same task, so I ransom the little atari. I don't use precalculated data; is there anyone who accepts the challenge and want to try to do better? Download and try my program, for who is interested I'll share the source code. Bye P.S. sorry for my english primi.xex

Hi friends. where can I find the documentation about system functions? I don't know the exact term of them, I think they are the system vectors routine. I need to know the input/output parameters of ALL the rom functions such as put char on screen, read/write file etc. Thank you. P.S. Marry Christmas and happy new year

maybe, but aren't players limited to 16X32 pixels?

Hi, I reopen this old topic. I find a game that show more than 4 colors in the same scan line. The game is Spindizzy: https://www.youtube.com/watch?v=VOo_nZLwUZg In yootube at time 7:10 you can see them Does this game use the tecnique described above from "ac.tomo"? I'm searching a sample code for doing this.

If you need to compress repeated bytes maybe the best choice is to use MNP5 algorithm. Exsample the repeated characters: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA can be compressed into: AAX where X is a byte value that indicate how much to repeat the character A. The algorithm is very easy and don't use a buffer; I used it to compress/decompress the initial logo in IK+ conversion project. I can share the source code if you need it.

The custom 6502 of the atari computers can execute undocumented instructions. Are these instructions useful? Does someone use the undocumented instructions?