[sdiy] My New Project - PCSYNTH

[Rainer Buchty]

>Much of the amount of time it takes to simply toggle an LPT port bit comes
>from the 'out' instruction, it seems to take about 1.5 uS on this CPU. 

Hmmm, why not just bitbang an average soundcard or go for an ISA-bus 
based DAC? That would spare you the wait states for accessing 
the LPT port. 

Thinking of formats like S3M and XM even old 486 PCs should be able to 
play back ~32 voices (and have enough horsepower left to render nice 
demos like Future Crew's "2nd Reality").

If you reduce it to e.g. 16 voices (or go for a faster machine) then 
sufficient computing power for modulation/filtering should be there.

Rainer