This is such a delicious article for those of us who are 'retro-' computing enthusiasts. Made my Sunday cuppa shine!

"In a way, this feature is similar to the YM2149 ADSR envelope. Not technically, but because both features are mostly ignored by Atari and Amiga programmers! :)"

As an Oric-1/Atmos programmer, this line was especially juicy.

Using PAULA's attached mode is so brilliant, btw. I love it when things of this nature are discovered, decades after the fact. We've had a few such revelations in the Oric world too, none as powerful of course at Orics' 1MHZ, but nevertheless, the shoulders of the Atari/Amiga giants are perilously within reach for the climb ..

EDIT: Oh, COPPER and PAULA, paired at the bits. Such a great hack, this one ..