No rush, Kurt. Is the Green NEC book the one with about 200 pages of which the last half appears to have been printed on tractor-feed greenbar paper <https://www.pdp8online.com/images/greenbar.shtml>?
I've been trying to figure out the puzzle pieces from different poor quality scans like they're the dead sea scrolls for years. Just last week I had been talking with Gary about the mathematical routines in the ROMs which lead me back to the second half of the PC-8200 Technical Notes. Even the parts which aren't missing are very hard to read. I tried to merge the scans into a more legible PDF to upload to archive.org, but gave up. I finally decided it would be less of a pain to just retype the whole thing. I was seriously considering doing that and was reading up on Leiden bracket notation <https://papyri.info/docs/leiden_plus#leiden-conventions> so I could properly emend the lacunae <https://arxiv.org/html/2407.00250v1>. A good quality scan will save me so much time and effort! —b9 On Fri, Oct 9, 2026 at 8:48 AM Kurt McCullum <[email protected]> wrote: > I can do that. The only problem will be with the pages that unfold to show > circuit diagrams but I will figure that out. Might take a couple days > though. This weekend is rather busy for me. > > Kurt > > On Fri, Oct 9, 2026, at 10:23 AM, B 9 wrote: > > Kurt, if you could scan the original, it would be great! I've been trying > to merge and decipher the two (and a half) versions of the tech ref I've > found online and it is nigh impossible. The quality is just too poor. > > —b9 > > On Fri, Oct 9, 2026 at 6:30 AM Kurt McCullum <[email protected]> wrote: > > > I have two version of the Tech ref. One is a photocopy and the other an > original hard copy in the green NEC folder. > > I can check those for any content you might need. > > Kurt > On Fri, Oct 9, 2026, at 7:24 AM, Gary Weber wrote: > > Hi John, > I may have a different PDF available. What's the missing content? Are > you missing whole pages or diagrams? > > Have a look at https://www.web8201.net/tech.asp and see if the second > document you're referencing is present. > > On Thu, Oct 8, 2026 at 8:58 PM John R. Hogerhuis <[email protected]> wrote: > > Is there only one PDF version of the 8201A tech ref? It has some missing > content. > > Also the document refers to another tech ref that covers the file system > in even more detail, don't know if anyone has found that. > > I ripped a version of it into an .md file so my local AI rig can utilize > it. Unfortunately converting it to .md (marksown) leaves a lot to be > desired... the ASCII art is mangled and the embedded OCR'd text is riddled > with errors. > > If anyone has got a better copy or one with better OCR that would be > helpful. Successfully converted to .md would be even better.' > > Next I'll be looking for or creating similar documents .md Inside the > Model 100 and Hidden Secrets, the user manual and Lien's book to feed into > the AI spaghetti flinger. > > -- John. > >
