ram expansion for 464/664

[arnoldemu]

Looking through some old cds I found the attached image.

Is this documented on the wiki?

it appears to be a PAL16L8 alternative for 464/664

[TotO]

I have never seen it.
Look to be a PAL circuit for 464 that required to hack the computer. Sad to have not used it 30 years ago...

[Bryce]

Nope, never seen that either.

Bryce.

[Gryzor]

What does it do then? Shall we up it?

[Poliander]

Here I found the origin of this circuit diagram, a German hobbyists magazine from '99

[Gryzor]

Attachment missing?

[Poliander]

Here you'll find the link 

[attach=2]

(Was too big to upload, sorry)

[Gryzor]

Ahhh I was looking at my laptop's screen at an angle and the link didn't stand out