These schematics look very nice.
However, I am gradually re-writing the original schematics information [ the pages which are unreadable] and this will be available for free.
So you pays your money...[or you don't]... and you makes your choice as they say.
Additionally I plan to write a summary of tips on disk copying, using zip drives, using CF cards, sample dump proceedure...and some more general tips on using the SDX which I have stumbled upon over the last 25 plus years.
cheers,
bruce mason