I just assembled my first two ram boards, and wanted to share some feedback.
Firstly, thank you Sorgelig, I see you are doing an incredible amount of work on software/hardware. The open-source nature of this, right down to boards and SMD parts, as well as good write-ups have enabled me to put together a MiSTer even when all sellers are out of stock of parts. That's great!
I would say to improve docs/help more people, these doc changes could be made:
* State on DIY page that cores only require stability at 130MHz, but that as a guide 150MHz should generally be achievable with the recommended parts, while errors at 160+MHz does not indicate a problem. I know this information can be determined by reading around, but to have all in one place can give confidence/guidance quickly to first-time builders like me.
* As noted here, some of the KEMET capacitors are nearly impossible to find, and you can substitute for them, but the wiki lists "low ESR" type, and those seem to be less common (or less commonly indicated). Maybe a footnote about part substition might help. For example, is low ESR important for ram board? I am not an electrical engineer, I still don't know!
* A tip that usually these small SMD caps don't have polarity and can be soldered either way, same with clock crystal, would be nice.
* A few pictures of assembled board layout would be nice - I strained to check my IC was in right orientation since it was unmarked and I wasn't familiar with the text orientation rule.
* Some parts, like headers with long pins, I had surprising amount of trouble finding from a vendors who would ship quickly. I did find some, is there a place to submit links to good part substitions? At least, I think it would be helpful to make sure there is at least one link to parts that will ship faster than Ali, if known.
At least, keep these things in mind when the page is next updated. Since boards are in short supply tips to help self-assemblers who might not be experts are useful.