. ebay PL: https://www.ebay.de/itm/125907145257?mkevt=1&mkpid=0&emsid=e11021.m43.l1120&mkcid=7&ch=osgood&euid=eee2966f610a45ee98229cb3ef6574cd&bu=43195666612&ut=RU&exe=0&ext=0&osub=-1%7E1&crd=20230428063233&segname=11021 für ATARI 600XL & 800XL.
A new replacement for the CO12285 quartz, which was present in the Atari 600XL, 800XL without the FREDDIE chip. The operating frequency of this quartz was 3.546894 MHz PAL. There is a replacement for this quartz in this listing. It is a quartz generator, which is installed in place of the 74LS74 integrated circuit on the Atari motherboard. It is shown in this video:
https://www.youtube.com/watch?v=cgpVeSi2Grg
We don't have to solder anything, just remove the 74LS74 chip and put the generator in its place.
Gtx, andY
