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You may also convert SAP files to XEX using http://asap.sourceforge.net

8-bit demos for the YouTube generation. How did you grab them?

Thanks, I'm aware of this and other emulation inaccuracies.

Yesterday I have released a new version of my 8-bit Atari chiptune player: ASAP. For those who haven't heard of it yet: it runs on Windows (including plugins for all popular audio players), Linux, web pages, Windows Mobile, Android, J2ME, etc. You can also use it to convert music files to Atari executables. Download ASMA and enjoy hours of Atari music. New in this version is an option to display information in the converted Atari executables, it looks like this:

Both the VScrol trick (9++) and TIP were first presented in Numen in 2002. Modes such as HIP and CIN are indeed mid 1990s. Years ago I've sent translations of my original articles on 9++ and TIP to Heaven. He put them on his website. I agree that there's huge shortage of Atari programming tutorials.

You may copy the files from the ATR and run START.COM from an Atari DOS. Or, for a single-file executable, concatenate NUMEN1.TQA and NUMEN2.TQA. Linux: cat NUMEN1.TQA NUMEN2.TQA >numen.xex Windows: copy /b NUMEN1.TQA NUMEN2.TQA numen.xex

Perl for the 8-bit Atari is impossible.

What MaPa said. Here's my cross-assembler.

Looks like a bug to me. Cool discovery!

Where?

1. Load Chimera. 2. Apply my fix. 3. Start the hidden game as described in the first post.

Many programs use SIO DUNIT at $301 for the drive number they were loaded from.

Today I analyzed the ROM of Major Havoc. It's dual 6502, quad POKEY. Is there a list of machines which include (quad) POKEY ? I consider dumping their sounds to SAP files.

Cool! Looks like the game code is corrupted, at least in Chimera (v1).atr from atarionline.pl. Quick fix in Atari800 (Win PLus): enter monitor, type: c 5005 8d f 5080 509f ea cont Now run the hidden game.

cc65 does. It also includes my zlib-compatible implementation of CRC-32.

:thumbsup: Looking forward to the schematics.

Actually 6/7% could be real - it's about 2000 cycles. But that's just coincidence. You can find the source code of my MPT Player at http://numen.scene.pl/download.html

SAP Player shows usage of your PC CPU by the SAP Player. 6502 usage depends on the tracker and the music. One of the fastest routines you can find is my MPT player (about 1000 cycles per frame). With TMC playing four times per frame you have little 6502 time left. You need to experiment with the player routine and the music. Change the background color while the routine executes and you'll see how many rasterlines it takes and how it varies as the music plays. Also, there are no more than 105 cycles per rasterline available to the 6502 due to RAM refresh.

Excellent job! Thanks a lot! When can we expect GTIA? Excuse my ignorance, but could you please explain these symbols:

Awesome!

That year I learned Perl.

He is using nick 0xF for quite a long time now, maybe longer than 1-2 years IMHO. I optimized my nickname in 2002.

You didn't read the text file. It's Quick Assembler, actually an IDE and not just editor. Youtubed with xasm and scite.

Here's my educational intro: "Making of CI26". making_of_ci26.zip

ASAP emulates it since 2008.