demOS

demOS is a framework to develop demos or demos tool for Atari ST in C + ASM 68k

Products based on demOS...

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BLITZwav - Cybernetics - 2022

Atari STe 8mhz - 1mb - 1 floppy

Muzik disk based on BLITSnd routine version 2 (4 PCM + 3 YM voices)

Interactive + scripted autoplay modes

• Musik : DOK
• Code : Metal Ages

Documentation

Youtube

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BLITSnd

4 voices replay routine using blitter to mix sound (less than 18% VBL)

• BLSconvert : convertion tool from .MOD format to .BLS format
• BLSplay : player using the routine

Have a look at DOCS/BLITsnd.md in the git depot for more info...

Prototype

Release

Documentation

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Synthetic sound - Cybernetics - 2016

Prototype using blitter to mix PCM sounds on 2 voices (proof of concept)

Synthetic sound

Thread on Atari forum

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Rebirth - Cybernetics - 2015

Atari STe 8mhz

• 1+ mb & 2 floppy drives

or

• 2+ mb & 1 floppy drive

Releases

• RC7 - released at Sommarhack convention 4th July 2015
• RC8 - released 20th July 2015

Add data precache feature: if you have at least 2mb of RAM but only 1 floppy drive you can now run Rebirth maybe it can also solve problems for people having floppy timing problems

• in this case just keep your second floppy drive switched off
• if you run Rebirth with the 2 floppy drives switched on, it will load as before (without precache)

REBiRTH

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Ubi30 - Metal Ages - 2016

Atari STe 8mhz

• 1mb / 1 floppy

Ubi30

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