c64-SID-synth filter input

[CCartCat at aol.com]

In a message dated 7/29/99 8:03:10 AM, you wrote:

<<The Dark force of dance wrote:

> However, even this is not quite what I had in mind personally. The SID is a
> unique sound and actually offers more options than many of our much revered
> analogue synths. Which makes it a very interesting proposition. Whether
> you're thinking of messing with the chips themselves or buying a 500 clam
> SIDstation. And that audio input seems  mighty inviting. :)

c64 has an audio input too, not very frequently mentioned in docs
however...
I can't tell right now where exactly it has its external connection;
using a common DIN<->4RCA converter the yellow RCA is the line in.
(sorry for the lamer description)
The line input is probably connected to a filter, and has no direct
thru. Noise is relatively strong, swithing the osc123-to-filter
functions off lowers it a lot.

-- 
* MURANYI Andras web-designer, studiovezeto  *
* ROMbrandt Multimedia * http://www.miwo.hu/ *
* mailto:Muranyi.Andras at miwo.hu              *
>>
In Search Of the SID external input:

Yeah, I made a break out audio in/out adapter once to try out the C-64/SID 
filter.  As I recall, using a very short program (the only kind I'd ever 
presume to write), I set the filter to band-pass mode and assigned control of 
the center freq. to a game paddle.  The background noise and overall thin 
tone (that is, thin sounding even for a wah) was not altogether encouraging.  
But anyone wanting to patch a treadle-controlled pot into the game port could 
have a wah pedal (one of the few such pedals attached to/partly made from a 
15-year old home computer and monitor).  Which is not to slag the beknighted 
SID so much as report my own slight experience . .  ;-)

Gee, I forget if the Sidstation has an external input.

Channeling both Goofus and Gallant,
Kevin