5 ms·

I came across the R65F11 I have from Burgess Macneal, who was using FORTH in the early 1980s to build a digitally controlled audio mastering equalizer. For vari

I came across the R65F11 I have from Burgess Macneal, who was using FORTH in the early 1980s to build a digitally controlled audio mastering equalizer. For various reasons it never became a commercial product, but he'd saved all of his prototyping material. Burgess had been using FORTH on his Ohio Scientific, so I suppose the transition to another 6502-core was probably pretty easy! This is what I've wired up so far: https://imgur.com/a/QCBOHq1 https://imgur.com/a/QCBOHq1

robomartin 3y ago
I went looking and found an old storage device (binder) with long-term storage technology elements (sheets of paper) for my old R65F11 designs. Not the entire thing, but a couple hundred pages of H-CAD (hand drawn pencil schematics), printed code listings and manuals. Here's the main processor board: https://i.imgur.com/a0fvjqa.jpg https://i.imgur.com/a0fvjqa.jpg Here are the front pages of three data sheets I have: https://i.imgur.com/fPgRzc7.jpg https://i.imgur.com/fPgRzc7.jpg https://i.imgur.com/EeFNT8j.jpg https://i.imgur.com/EeFNT8j.jpg https://i.imgur.com/kmRsyXq.jpg https://i.imgur.com/kmRsyXq.jpg In the documentation set I have a full printed listing for some version of the code editor I wrote as well as a pile of utilities and drivers. This is dating back almost exactly 40 years. Also have the schematics for various interface boards, including a floppy disk interface board and, I believe, the driver I wrote to run screen-based code storage and retrieval from it. This was a very long time ago. I can't remember how closely these schematics and code matched working hardware. If any of this could help you I might be able to scan and post somewhere. It will take some work because I have to use a flat-bed scanner. It's amazing how well paper and vellum survive four decades inside a binder.
- systems_glitch 3y ago
  Confirmed, I have all of the datasheets/appnotes you posted first page pictures of!
- systems_glitch 3y ago
  Thanks for the uploads! I will check today but I believe I've got hardcopy of the datasheets/appnotes you have -- Burgess also grouped design docs into binders, so I have his originals. It's a habit I started carrying over to my own projects a number of years ago, never have to worry about something being deleted by accident, a format becoming hard to read (switched EAGLE CAD -> KiCAD 9 years ago), etc. Plus, I find it easier to read dead tree reference material when working with something on the bench! We did a R6501Q based SBC a number of years ago, and eventually got RSC FORTH kernel and development ROMs running on it. We'd found a copy of the ROM object code in Burgess's archives and got it going from that. I want to eventually add a floppy controller to it, a friend had been working on replacing some of the floppy-based screen storage with CompactFlash backed storage, but got busy on other things. What was the intended purpose for your R65F11 hacking?

robomartin 3y ago

I went looking and found an old storage device (binder) with long-term storage technology elements (sheets of paper) for my old R65F11 designs. Not the entire thing, but a couple hundred pages of H-CAD (hand drawn pencil schematics), printed code listings and manuals. Here's the main processor board: https://i.imgur.com/a0fvjqa.jpg https://i.imgur.com/a0fvjqa.jpg Here are the front pages of three data sheets I have: https://i.imgur.com/fPgRzc7.jpg https://i.imgur.com/fPgRzc7.jpg https://i.imgur.com/EeFNT8j.jpg https://i.imgur.com/EeFNT8j.jpg https://i.imgur.com/kmRsyXq.jpg https://i.imgur.com/kmRsyXq.jpg In the documentation set I have a full printed listing for some version of the code editor I wrote as well as a pile of utilities and drivers. This is dating back almost exactly 40 years. Also have the schematics for various interface boards, including a floppy disk interface board and, I believe, the driver I wrote to run screen-based code storage and retrieval from it. This was a very long time ago. I can't remember how closely these schematics and code matched working hardware. If any of this could help you I might be able to scan and post somewhere. It will take some work because I have to use a flat-bed scanner. It's amazing how well paper and vellum survive four decades inside a binder.

systems_glitch 3y ago
Confirmed, I have all of the datasheets/appnotes you posted first page pictures of!
systems_glitch 3y ago
Thanks for the uploads! I will check today but I believe I've got hardcopy of the datasheets/appnotes you have -- Burgess also grouped design docs into binders, so I have his originals. It's a habit I started carrying over to my own projects a number of years ago, never have to worry about something being deleted by accident, a format becoming hard to read (switched EAGLE CAD -> KiCAD 9 years ago), etc. Plus, I find it easier to read dead tree reference material when working with something on the bench! We did a R6501Q based SBC a number of years ago, and eventually got RSC FORTH kernel and development ROMs running on it. We'd found a copy of the ROM object code in Burgess's archives and got it going from that. I want to eventually add a floppy controller to it, a friend had been working on replacing some of the floppy-based screen storage with CompactFlash backed storage, but got busy on other things. What was the intended purpose for your R65F11 hacking?