ZN428E chip need pinout

[Philip Pemberton]

Ethan Dicks wrote:
> There was a PC version called the
> "Disney Sound Source" from that brief era between silent PCs and the
> first "multimedia" games.  I have one from testing games for
> Activision in the early 1990s.

There was also the Covox Speech Thing, which ISTR was basically the same 
thing. "Everyday Practical Electronics" magazine also published a design 
called the "EPE SounDAC" in 1996 (!) which was apparently very similar to the 
Covox, but I haven't seen the design for that. I did build an R-2R DAC for a 
laptop way-back-when, though... $DEITY knows what happened to the thing.

> I've wanted a simple solution like the ZN428E for driving an analog
> meter from an 8-bit port.

There are other D/As with 8-bit inputs. If memory serves, Analog Devices make 
a couple of cheap 8-bit multiplying D/As with parallel inputs.

You could also go down the route of running a couple of SPI D/As off an 8-bit 
port. Four-channel audio from a printer port, anyone?

-- 
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/