[Coco] [Color Computer] Orchestra 90 - S/S Pak

[jdaggett at gate.net]

Actually what would be better is to replace the OC90 with a full function 
MIDI player. While the OC90 does try and mimic MIDI, it not really a MIDI 
player. The D/A's would definitely have to be expanded to at least 16 bits for 
each channel. The hardest part is generating the sound tables. tables for 
255 instruments at 16 bit is a bit time consuming.

james

On 22 Jul 2006 at 3:07, James Diffendaffer wrote:

> The Orchestra 90 is just a simple stereo D/A converter.  It sounds
> better than the internal 6 bit D/A converter but it still requires a
> lot of CPU time to drive it.  Now, if someone were to add hardware to
> drive the D/A converters with DMA like on the Amiga... then it would be
> pretty cool.  I looked at adding that through a cart but as someone has
> already pointed out, it needs access to some signals that aren't on the
> connector.  Isn't Archanoid about the only game that used the O-90?  The
> only other stuff I know of that uses it are music programs.