Calm down, it's on my Poly Mk-1 as well. It most likely should be there.
The chip is an 80c85 processor, there isn't much that can be modded to that.
Chances are the designer of the pcb board forgot a trace and they had to
add one that way after the boards were made, or that there simply was no
way to route the trace and it was added that way.
Basically, it should be there.
On Fri, Nov 22, 2002 at 01:38:54AM -0000, Mike Walters wrote:
> I've owned this Poly800 for 10 years, and I noticed the first time I
> opened it there was a jumper wire soldered between pin 20 and 22 on
> IC24. The chip is smudged, but looks numbered MSM80085ARS 3924. What
> kind of mod might this be?!? I didn't do it!!
>
> -Mike Walters
> www.mysterycircuits.com
>
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