[sdiy] Using 8051 to build a synth

[Paul Maddox]

Hi,

> I was wondering if anyone could direct me to a source/schematic that uses
a 8051
> as a OSC and a VCA plus envelope generator?

ambitious...
Why not use something faster like one of the AVRs, these are 8051 based, but
much faster.

> I have heard some of the old Roland synth are built on an 8051 eg JX10 but
can
> not find any schematic to see how that it done.........

they may have done, but only to control the hardware, certainly not to
generate and modify.

> Also, I am very puzzled about using 8051 to create an VCA and a envelope
> genrator. Can anyone shed a light on that?

Multiplier is your VCA, the EG, well in its basic form, just an up/down
counter with start and end points.

Paul