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About spinnaker15136

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    Chopper Commander
  1. Can't stand Eagle CAD but I have made my own components in DipTrace many times. I am sure Eagle CAD has similar tools. Not hard to do at all in Diptrace. I can't speak for Eagle CD.
  2. I regularly operate 8 bit pics at 20MHZ and up and they don't even begin to get anywhere close to warm.
  3. Looks like the hard copy I have from years gone by.
  4. Also I have tge OS manual but if there is a good tutorial on host to drive communication over the SIO then that would be very helpful.
  5. Was wondering if someone could point me to a SIO disk emulator project with source code comments in English? The piece I am mainly interested in right now is just the part that emulates the various Atari drives when it comes to the Atari talking to the disk dive. I think I found the source code for SDDRive max but I am having difficulty figuring ou the part of the code that emulates the disk drive communication and does the work of processing the various command from the host. https://github.com/kbr-net/sdrive-max p Can anyone help? The simpler the better as long as it is working. Later I would like the code to read and write ATR files but for now I would be happy with just emulating a disk drive.
  6. I don't think it used battery backup. Pretty certain it was bubble memory as mentioned above.
  7. I am beginning to think this would be a huge undertaking for such a project. I have someone sending me a couple of PC drives. I am thinking the best thing to do is try to build an interface for them and fit it to an 810 case. I could probably leverage the work done like the folks that did SD Drive Max for the SIO part.
  8. Yes. That is it. He said it was bubble memory. I was thinking in today's terms. Yeah I used to work on a PDP 11/02 system that loaded its program and database all from cassette tape. It would take at least a half hour to load. What should happen was it booted up into its operator terminal software. Often you would get the deadly @ symbol which meant you had to load all over again. But I had one system that had magnetic core. If there was a power failure and the battery backup failed (which happened often too) all I needed to do was restrat the software by jumping to an address.
  9. Was wondering if someone by chance might know this person I meet back in the day. I guess it was the early to mid 80s. Atari was pretty much in the mainstream for only a couple of years. Anyhow I met someone in Pittsburgh that designed and built a solid state disk drive for someone confined to a wheelchair. Can't remember how I met this person. I did work for a computer store around then and I think we may have sold Atari for a very brief period. Don't remember if I met him there or perhaps it was at another store maybe even previous to when I started working there. You have to admit that it must of been a heck of a feat to design something like that long before the internet. Just throwing it out there in case someone happens to remember such a device being built.
  10. Found this out on the intraweb. http://www.page6.org/archive/issue_24/page_22.htm The listing confuses me. Says to enter in BASIC but looks like a macro listing. Is the BASIC program missing by chance?
  11. I have the original Atari 810. The one with the problem rear board. Other than the Grass Valley upgrade, was anyone tried to do a redesign? I might try and give it at least a look anyway. But first I would like to understand the over all issues with the rear board. From what I understand it was the RPM circuit that was unreliable. Was this pretty much the main issue? I am thinking it might be possible to redesign the rpm control section only. Patching in control lines from the side board might be challenging.
  12. Well that is what I would do for anything I designed and built. Or even something I was repairing that was not working. But what I have is a working system and wanted the least invasive way to swap it out.
  13. And from my search it looks like Incognito was to make the Atari 800 compatible with other Atari's? Man I missed out on a lot or have forgotten a lot. Is that the Qmemiry board? Photo is awfully fuzzy. Ar there other boards in there too? Looks like multiple boards in the same slot?
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