RC3 2021/03/31 Fixed the IDE lockup issue and added unit tests so this doesnt regress.

Serial number changed to 536
Product code 4 

RC2 2020/08/02

Advanced the CIA read timing code. Noticed it was managing to read after the data had disappeared from CIA A in DiagROM.

Fixes: A2000 compatibility.

RC1 2020/08/01

Changed the timing for the 030.
Fixes: Turrican II and Damocles.
