FW: SN76477N

[JOHN VOLANSKI]

I bought a kit many years ago from a company called Bullet Electronics.   
 They had developed a PCB to exercise most of the functions and features   
of the SN76477.  It was a small kit which had the PCB and a handful of   
ancillary components.  It had various dip switches for selection of   
functions that are on-board the synth chip.  It also had small PCB-mount   
plastic pots that you could vary to control functions like VCF cutoff   
freq, LFO sweep rates, VCO pitch, etc.  It was pretty cool, but fairly   
delicate-  definitely a table-top item.  I pulled the board out several   
months ago and powered it up.  It still works.  I don't think I would   
endeavor to try to make a playable music synth out of it, but it does do   
a fairly good job of sound fx generation.  I have all of the   
documentation on the board from Bullet (out of business?  who knows) and   
the SN76477 chip.  I spose if you duplicated all of the pots and switches   
on a panel and ran them to the PCB, you could have a cool little box.

JV

 ----------
From:  J.D. McEachin[SMTP:jdm at synthcom.com]
Sent:  Thursday, February 13, 1997 1:04 PM
To:  Synth-DIY
Subject:  Re: SN76477N



Thomas Henry published an project called the "SuperController" in an
early Electronic Music, and in one of his synth books as well.  He
decided that it wasn't really suitable  to use as a synth-on-a-chip, but
it could be used to as the basiss for some interesting modules, including   

an LFO and a weird clockable noise source.


I've always wanted to build one, but never could find the chip.  I could
send you a copy of the article, I suppose - then you can build it and
tell us if  it's worthwhile!

JDM


On Wed, 12 Feb 1997, Peter Samuelsson wrote:

> A few years ago I came across a couple of chips called SN76477N, and   
only
> yesterday a friend of mine
> said he had two as well and he gave them to me.. I remember them as   
being
> some sort of oscillator-chips, but can't remember.
> I searched on the web but only found some text-index of a book where   
the
> chip had been used in some percussion unit
> and up and down tone generator circuits.. Does anyone care to explain   
what
> exactly I have here or where I can find some
> info about them. Manufactured by Texas Instruments btw...
> Thanks in advance...
>
>
> Peter Samuelsson
> ime95psa at lustudat.student.lth.se
> ie9595 at malmo.lth.se
> http://www.student.lu.se/~peter_s/index.htm
> [[ HEADER.TXT : 5429 in HEADER.TXT ]]
   


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