Vintage Synth Repair

http://cpluselectronics.com/u__UPD8021C048.html

Unsure if this *really* means that they can source though
________________________________
From: Nicolas<mailto:nico678@...>
Sent: ‎15/‎08/‎2013 18:31
To: vintagesynthrepair@yahoogroups.com<mailto:vintagesynthrepair@yahoogroups.com>
Subject: [vintagesynthrepair] Sequential Circuit Pro One  UPD8021 chip

Hi everybody,

I'm looking for a UPD8021 microcontroller chip for a Sequential Circuit Pro One synthesizer.
Does anybody knows a source or a replacement for this chip?
Thank you!

Nicolas