Where the crystal is gone ?

[Petari]

http://exxosnews.blogspot.com/2017/06/blast-from-past-144-floppy-kits.html

Look last picture there, which is last rev. No more expensive crystal on it.
Knowing exxos (much better after year spent watching his lame questions and posts at his 'forum') , I really can not think anything other except that he was inspired by this:

http://atari.8bitchip.info/autostep.html

No credits ? Yeah, that's what I'm talking about .

[Anemos]

Maybe he use the internal crystal on eprom chip? dunno..

[Petari]

Maybe he use the internal crystal on eprom chip? dunno..

LOL . Was it supposed to be a joke ?
Actually, what exists on some EPROM chips is voltage converter, but that's possible to make with silicon . Crystal not.