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spinnaker15136

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Posts posted by spinnaker15136

  1. Posted

    library. cio library. that's pretty much it. it's for whatever programming language. You'll have to figure it out... could be straight up assm, could be c, could be any number of things. You will have to look at it and read or try it.

     

     

    Ah yeah I know that. Trying to remember if I wrote it or someone else did. Did you read my post?

  2. Posted · Edited by spinnaker15136

    As _The Doctor_ says, you’ll need single-density disks only with your 810.

     

    Do you have an SIO2PC device of any kind? If so you can download ATR files of pretty much anything you want or need from various threads here at AtariAge, the collection at AtariMania, the Pigwa FTP site, the Mushca collection, or the Internet Archive. Then just use a sector copier to write clean disks to your 810 and see if they boot.

     

    That would let you test the 810 formatting as well as ordinary read/write performance.

     

     

    I never asked for a double density disk. I do not have an SIO2PC. I have seen them for around $60. Can I find cheaper? What are mu other options? Can I get on of the SD Memory drives and load it on there first with my PC?

     

    I still need to try formatting. I have a few blank disks. I will try later.

     

    I might need to pick up more but only double density seem to be available these days. Please remind me. Can a double density floppy disk be formatted single density? I believe so but can't remeber for sure.

  4. Posted · Edited by spinnaker15136

    Good luck making your own cable - it's harder than it looks. I gave up and bought an Atari XL/XE 5-Pin DIN to S-Video & Composite AV Cable for $11.99 plus shipping/tax at https://www.8bitclassics.com/

     

    I got my cable today and it works great. 8bitclassics.com is located in Wisconsin.

     

     

    Not all that hard if you can solder. Just need to be careful with the shield which does not have a sheath. I did not do it on my cable but you can get shrink wrap. Or in a pinch nail polish works as a good insulator. I have used it in a number of projects.

     

    Thought for $10 it is not worth the hassle. Wow that is a pretty good deal. I probably paid $6 for a set of 5 5-pin DINs. And I had one for the longest time and threw it out with an old monitor. :(

  5. Posted

    Well I got my 38 year old Atari 810 up and running. Which I understand is somewhat of a miracle being it is one of the orginal drives.

     

    Well it sort of works. Not all my disks are bootable. The original DOS works just fine along with a number of games. But I have 2 DOSXL copies. One boots sort of. The other seems to boot but when I do a DIR, I get garbage. And the drive sounds like it is reading a bad sector.

     

     

    So I am not sure if I have a bunch of bad disks or I still have an issue with this drive.

     

    Any place I can a copy of DOSXL or similar on single density 5.25"? Is it legal for someone to send me a copy? I of course will cover costs. I am in the US (Pittsburgh, PA).

  7. Posted · Edited by spinnaker15136

    Looking through my old Atari 800 disks and found something labeled CIO.LIB, does that ring any bells? For the live of me I can't remember if I wrote it or got it someplace. I can't even remember how to use it. I have the original Atari BASIC, BASIC XL and MAC 65.

     

    I know what the CIO is but what the heck is CIO.Lib?

     

    I did write a CIO driver for a RS232 interface I designed back in the day. Not sure if it was that or not.

  8. Posted · Edited by spinnaker15136

    Yeah I can't boot all of my disks. I have 2 DOSXL disks. Can only boot one. And when I do a DIR with it, I get garbage for the list. Original DOS disk boots fine. And does a dir fine. If I do a dir of the dosxl disk it fails.

     

    So I don't know if I have a bad drive or several bad disks. Any place I can get a DOSXL disk?

     

    I wonder if replacing the belt would help?

     

    Does the 1050 diagnostic kit work on the 810? Figure I would buy one but in case the 810 does not pan out, I would have the kit for the 1050.

  11. Posted

     

    Ah yeah, sorry I missed that on the small phone screen earlier. Yes you definitely have the original Power board (with included analog function), no separate analog board, no data separator daughter board, and probably has the Revision "B" ROM as well. (Which had a slower formatting skew)

     

    C011299B is revision 'B'

    C011299C is revision 'C'

     

    http://atariage.com/forums/topic/269694-improved-sector-layout-cx8111/?p=4016787

    http://atariage.com/forums/topic/279363-the-atari-810-revision-b-rom-has-finally-been-found-dumped/

     

     

    You probably saw on the BEST site Brads long write up on the woes of the original boards. They power boards sound like they were all pretty much doomed to die a few years after manufacture. You'd need the whole set of 3 boards + Rev C ROM...

     

    Edit: here is the page that talks about the replacement boards on the best website: http://www.best-electronics-ca.com/8-bit_.htm

     

    "Atari Engineering Grass Valley 810 Analog Rear board upgrade set. New Rear 810 Analog Rear Power board, New Top Analog R/W board, New 10 Pin Jumper cable, Installation Instructions. Upgrades / Replaces the older Atari 810's with Single Power board that 100% Fails. See Atari 810 Tec tip below!" - CB101128 - $79.95

     

    Hmm Doesn't mention the data separator or ROM in that item. No specific line item to get just the data separator board & ROM without buying a whole new side board for $29...

     

    You might also find someone on the forums here with spare/salvage parts to compare price to...

     

     

    Unless I can get the replacements really cheap. It might be throwing good money after bad. Might be best to just put the money into a working 1050.

     

    I don't even know for sure if the drive is working.

  12. Posted · Edited by spinnaker15136

    in your picture clearly you see them

    there is rust around the transistor/voltage regulator. time to clean that up being careful about the isolation sheet etc. involved, fresh heat sink grease. a108/q113

     

    You can't miss them, they are in TO packages and connected from the pcb to the heat sink/ metal plate....

     

    They are interchangeably referred to as voltage regulator and transistor...

     

    Ana P/S C014348 Voltage Regulator 7805 (5V) J104

    MOUNT C014348 VOLTAGE REGULATOR (5V)(78M05) A108

    MOUNT PASS TRANSISTOR (TIP 32C) Q113

    MOUNT C014712 12 VOLTAGE REGULATOR 7812 (12V)

    Ana P/S C014712 Voltage Regulator 7812 (12V) J105

     

    the parts list show both names and parts for q113

    and they are shown both ways in the diagrams, and are noted

     

    Granted in the chock full of nuts manuals you have to read and look at all the pictographs and diagrams... but I will dig up yet another maybe easier for you to use version

     

     

    Rust on mine? Maybe it looks that way in the photo. I am seeing no rust. Only the isolation sheet. , maybe a bit of thermal paste bt that is about it.

     

    and yes I saw the rest of that information too.

  15. Posted

    Hmm. In my picture, the circled component is at J105, and has MC7812CT printed on it, which the datasheet says is a Motorola "3-terminal 1A positive voltage regulator" output of 12V with 4% tolerance.

     

    Edit: I haven't looked at the schematics you're looking at, but maybe they're for the old power board. My drive has the newer power board. (1981 = newer? Hehe)

     

     

    Then both of those manuals must be out of date too. Both refer to that device as a transistor. The one calls it a Pass transistor . Funny, I can't find Q113 listed in either manual.

     

    There must be a third manual. The Atari Mania on lists a 7812 but does not assign it a part number and does not seem to show it in the schematic. Or at least does not appear to show it as the schematic in that manual is very fuzzy.

  17. Posted

    Hmm. In my picture, the circled component is at J105, and has MC7812CT printed on it, which the datasheet says is a Motorola "3-terminal 1A positive voltage regulator" output of 12V with 4% tolerance.

     

    Edit: I haven't looked at the schematics you're looking at, but maybe they're for the old power board. My drive has the newer power board. (1981 = newer? Hehe)

     

     

    Not mine.

     

    CO

    14786

    0 0 2

  19. Posted · Edited by spinnaker15136

    Another thought... Very old 810's from 1979 to late 81 had a notoriously bad power board, no data separator (second PCB attached to the side board) or analog board on top of the mechanism.

     

    Does your drive differ from this picture in any way? This is the (earlier) MPI mech. 810's mfg after November 82 may have a Tandon mech.

     

     

    My power board looks the same. Drive is different. So what does the updated one look like?I will upload a pic of mine in a bit.

  20. Posted

    the link was given for him to go to Atari Mania if he needed a rev 1 fsm. the rev 2 fsm contains tech tips and new power board et al. Everything has been provided short of a van appearing and one of us doing the repair curbside. The provided download if I remember correctly- was because he didn't go to Atarimania link I provided to get it, so I put the one I had handy up to get him started. It's best to update the drive to the later power board and make sure it was up to rev 2 spec in any event.

     

    Thanks to the AA crew for helping out, he'll get it worked out soon.

     

     

    I DID go to the link you provided thank you. In my post above you will see that I could not read the schematic so I found another copy.

     

    Does Best carry the updated 810 power boards? I will try and look around on their site later this after noon.

  21. Posted

    Just took a pic of my caseless 810. 7812 on the power board.

     

     

    That is NOT a 7812. I thought is was at first too. The circled is Q113. It is a power transistor. Regulation is provided by Q114 and Q115. I am getting reasonably clean power on pin 2- of the connector. So I need to ohm out the board and see what I thought was the collector on Q113.

  23. Posted · Edited by spinnaker15136

    There is no 7812 in the 810 schematic. There is only 9VAC in so the best they can do is ~8VDC. They use a boost switcher (they call it a doubler) to get 12V from the regulated 5V (7805).. Regulators are not my strong suit and it has been 40 years since I was in tech school but this is the way I understand it. . The BOM on the linked manual above lists a 7812. but gives no part number nor component number.. The manual I attached does not list it at all.

     

     

    There are only 3 TO220 packages in the 810. Two are clamped to the base plate. One of them is a 7805 and the other a power transistor Q113. The other t0220 is near the SIO connector and it is another transistor. It has a clip heatsink. If there is a 7812 on board I would like to know where it is.

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