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cwilbar

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About cwilbar

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  1. I haven't looked, but bitsavers.org probably has the Tandon drive schematics. MPI made full height PC compatible mechs (with the large door with pushbutton release). But they are uncommon. I suspect that if one did fine a 180K/360K one that with a bit of re-pinning it could be used as a replacement in an MPI mech 810 like the Tandon TM100 PC mech can be made to work in a Tandon 810 (it will work in an MPI mech 810 too, but you need to to change the 810s face to a Tandon one). The TM-100 drives regularly come up on eBay, mostly in the states, and not usually for the money I'd pay. But sometimes the pop up (I did get one for $35 shipped within the last 6 months as I have a PC 5150, and PC 5160 to put back together (from piles of parts). I think a cool 810 would be one upgraded with an XF551 (clone) circuit board. I have a QD MPI big door 'PC' drive that I could do 720K with. That would be cool in an 810, as it would be a 'sleeper' but be able to do 720K instead of 92K :-). I don't think you can maintain single density 40 track compatibility with this however. Alternately if you could put two half height mechs in and do something cool around that too.
  2. As indicated, the only difference between 810 Tandon and 810 MPI mech drives is the mech and the face plate. I too have put a Tandon TM100 drive into a Tandon mech 810 drive that suffered an apparent head failure. It was a TM100 where the upper head had gotten torn off, so I transferred the pressure pad assembly from the 810 Tandon mech, re-pinned the wires that needed re-pinning, and the 810 was back up and running. I myself always liked the MPI mech.... but that could be more from the fact that my first 810 (back in the day) was an MPI mech 810. I have had a Tandon mech 810 have the connection 'collar'? between the stepper and the rest of the mech become loose enough that an early game trying to find a missing sector, putting the 810 into 'snark' mode, knock the head ouf of alignment. Haven't run into that with an MPI, but it could have just been that one Tandon mech. Not sure if this is common in aging Tandon mechs, or if I just 'got lucky'.
  3. Thank you @selgus !!! This XEGS is now complete. A bit of yellowing, but all in all, not that bad, and much better than no top case ! 🙂
  4. Another bump.... I'm still looking for Atari 800 case (a dead/stripped Atari 800 will suffice as well)..... anyone ????
  5. bump... still looking for an Atari hen's tooth (Atari 820 printer).....
  6. I suppose if that is your goal... though at that point, you ARE an archivist 🙂 I have to go through all of my titles, as I think I have some things that may not have been preserved yet. As I've already done my imaging, maybe I can use the explorer tool to go back and look at any disks I'm contributing to see if there is any data on the 41st track. Does .ATX support more than 40 tracks ? I do keep .SCPs in addition to the .ATX and .ATR files I create from the .SCP files, but I've never looked to see if ATX supports something the Atari could never see/access.
  7. I think wrong is a bit strong. OK, hard core archivists may find interesting bits there.... but for functionality/duplication on Atair 8 bits, 0-39 or 1-40 depending on how you like to count is all that is required. If you want to duplicate stuff that the Atari never could reach or use that has been stuffed above the 40 tracks, then sure.... but it will not make any difference in terms of software use/duplication (for 8 bit Ataris). So, apologies to archivists who may have read my response regarding Atari 8 bits and 40 tracks. Please do preserve these bits beyond the last track if that is your thing. If your not an archivist and you only care about making usable ATR, ATX, SCP files for use with emulators, Sdrive Max, writing back to blank media, then you don't need to worry about extra tracks. I'm now off to read @ijor's post, as while I may not be interested in archiving beyond the 40 tracks (for Atari 8bits), I am curious as to what has been found there 🙂
  8. Extra tracks depends on your platform. No data being the 40th track is readable on an Atari 8 bit, so there would be no point in attempting to dump extra tracks for Atari 8 bit software. However, many other platforms can exceed the normal # of tracks, I believe PC, Apple II, Atari ST, C64/128 can. Not sure about TRS-80. There is a handy feature in the Supercard Pro software that can figure out how many tracks your drive can read. Back in my early PC days, I used a custom formatter for floppies to throw in 1 or 2 extra tracks, and IIRC an extra sector per track to get more data on a floppy. The limiting factor is the usually the floppy mechanism.
  9. If you can locate a Tandom TM100 drive (these were used in the original IBM PC), you can remove the top board, and re-pin some of the wires, you can connect that up to the boards in an 810. It is harder, but you can find MPI mechs intended for a PC. If you want genuine Atari replacement mechs, I believe both Best Electronics (http://www.best-electronics-ca.com/) and B&C Computervisions (http://www.myatari.com/ ) would have them available. Shipping of course would be from the states. You also hadn't mentioned if your 810 was an MPI or Tandon mech drive (MPI mechs have the push button and large door, Tandons have the usual 'flap'). a Tandon mech will work in either drive, but you might have to leave the front off if it is an MPI one as it might interfere with use of the flap. The PC Tandon mech will be a two head drive, but the top head you would not connect. I had a Tandon based 810 where the head failed for some reason. I was able to use an IBM PC compatible Tandon TM100 that the upper head was broken off of, and put the upper pressure pad assembly from my 810 on, adapt a few wires (drive rotated backwards for one w/o changes 🙂 ), and it works great now. Good luck ! What I'd like to do is using the PCBs available that re-implement the XF551, put a 360K MPI PC class drive (MP-52?) and make a stock looking 810 that has the electronics of an XF551 and get 360K (or using the 80 track quad density MPI drive) get 720K in what looks like a perfectly stock 810 :-).
  10. This sounds like it would be good in terms of not releasing when adhering something to a flexible surface. Would you rate the resulting adhesion similar to a diskette label ? Weaker ? or Stronger ?
  11. I know some use the FD-55GFR, and if you are going to archive any old 8 bit era software that uses half tracks (Apple, C64), you'll need the narrow head and 'half' step capability (in reality to read 40 track disks it double steps, so to read half tracks it only steps once 🙂 ). I'm archiving my Atari software now, which never used half tracks. So I'm using a 48tpi Panasonic JU-455 drive currently. But I do have a lot of C64 software to archive. I prefer using a 48tpi drive, especially for writing (if you are going to write disks at all with the FD-55GFR, you want to make sure you fully bulk erase the floppies first with a bulk eraser, otherwise when you write a track it is half the width, and if any of an old track that was full width remains, when used on a 'full width' head its going to pick up new signal and old signal. It has taken me a bit to get use to the nuances of the different options/software UI. I'd really like to have an 'advanced' UI which has a lot of checkboxes/pull downs on one page that lets me define the format. When I have to read the backside of a flippy I get tired of having to go up to the menus to navigate to not requiring the index signal.
  12. Some of my originals have labels that have come off. Has anyone re-affixed labels on their originals ? If so, what have you done about the original glue, and what glues/adhesives did you use ?
  13. With Index enabled in splice mode it is indeed reading the index, and imaging a flippy will not work. The UI deciding when to gray something and not, made it very confusing what can/can't be enabled, and what should/shouldn't be used.... Still learning about this thing I guess 🙂
  14. I swear trying too archive my originals with the SuperCard Pro is going to drive me nuts. I did a splice 4 scp image of Axis Assassin and Hard Hat Mack. Neither would boot in Altirra (using accurate disk timings). I did a splice 5 scp image (and checked index sensor on even though it was grayed out), and re-imaged them, made atx's, and they worked. (I don't know if it is luck, splice vs 4, or index sensor on vs off (even though grayed out when set to splice mode it lets you check it). The hardware is great, the software still has some issues (like, a grayed out option usually can't be checked, so when I check it on, is it turning on when it is grayed out, or not ?). I guess I can try to verify that by checking index on while using splice mode and try to read a flippy (since it can't read the index hole). If it errors, then I know that clicking the grayed out option turns it on despite it being gray. Maybe I should be using a8rawconv to take the original scp images ? This product has been around for some time now, I though it would be fully 'cooked'... but I've had sensitivy to drive issues (with media test), and odd issues like this (where these titles use scewing protection). What do others use for setting s? I tried index on these two titles, and it didn't work and just about every track had a missing sector when there shouldn't be any missing).
  15. Sorry, the laptop is actually running Windows 7 64 bit. Looking at performance monitor the process is waiting on a thread in rundll32 What it is doing beyond that I don't know. If I end rundll32 then it opens ! I don't know if that rundll32 was launched by ATRTools or something else (I'm guessing something else, as I can now launch it fine). I'm going to try a reboot and see if the problem returns. Not sure how to track down what launched rundll32 or why it interferes with ATRTools ? -- Curt
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