Hi!
I recived the 576K sram extension for the 600XL from Jürgen and installed it - it´s perfect!
I had to take out the old 64K extension which I bought back in the days...maybe ´84 or 85´. Because I have not seen this kind of extension anywhere else yet, i will post some pictures of it. I hope, you like it.....oldschool.
Greetings from germany,
Jens.