DDTSS (C64 Driver)

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David Dwyer Thiel Sound System
Released 1983-??-??
Programmers David Thiel
Language 6502 Assembly
Formats Unknown

David Dwyer Thiel Sound System (or DDTSS for short) is a official name of the sound driver that was programmed by David Thiel, while he was working for Action Graphics in 1983, and it was carried over by Incredible Technologies. The driver was also used by Softie.

It is unique in that it supported six channels, including three virtual ones which could be used for sound effects, and the driver was retooled, so it used the six-channel virtual SID sound system.

When it was at Action Graphics, Thiel got the Roland MIDI interface for my DX7, which was the first available way to get music keyboard gestures into the PC. Thiel wrote a text editor in Intel assembler in order to edit note and timing data captured from the DX7 keyboard. When it was at Incredible Technologies, he started using Cakewalk and wrote a converter from MIDI files to my interactive sound system format.


Released Title Sample Notes
1983-11-?? Pitstop (C64)
1984-06-?? Beamrider (C64)
1985-0?-?? Rock n' Bolt (C64)
1985-0?-?? Winter Games (C64)
1986-??-?? Championship Wrestling (C64)
1986-??-?? Family Feud (C64)
1987-??-?? Wheel of Fortune (C64)
1988-01-?? Jeopardy! (C64)
1988-??-?? The Three Stooges (C64)
1988-0?-?? The Price is Right (C64)
1988-0?-?? Hollywood Squares (C64)
1988-0?-?? Card Sharks (C64)
1988-0?-?? Win, Lose or Draw (C64)
1988-0?-?? Classic Concentration (C64)
1988-0?-?? Double Dare (C64)
1989-0?-?? Wipeout (C64)
1989-0?-?? MTV Remote Control (C64)
1990-??-?? Snow Strike (C64)
1990-??-?? Grave Yardage (C64)
1990-??-?? Disney's DuckTales: The Quest for Gold (C64)
1991-??-?? Arachnophobia (C64)