addendum:
This was received from one of our customers. More chips can be ordered still if sufficient interest. Many people blame A3000 for lockups but as found this is due to the old chip revision:
"Thank you very much for everything you did. I received the package actually one day after your last (this) email, and only have recently upgraded the chip. After a false start (not your chip -- another 'buggy' chip I purchased; different story) my system 'rocked' to life. I immediately noticed as you mentioned increased reliability, and continuity (pgm/games didn't crash / end abruptly as in the past, didn't hang and went back to workbench.)
Thank you, and thank you again. "