Jump to content
Have You Played Atari Today?
2600|5200|7800|Lynx|Jaguar|Forums|Store  

towmater

Members
 View Profile  See their activity

  • Content Count

    803

  • Joined

  • Last visited

Posts posted by towmater

  4. Posted

    2 hours ago, OLD CS1 said:

    You might be able to snag one here in AA for a better price if you post in the Wanted sub of the Marketplace.

    I should get around to offering up some trades. I have an Atari 1200XL that needs a new home, etc.

    I'm just finding out that the Indus itself may be capable of running CP/M. Not loading it... it runs on the drive's internal Z80 CPU, apparently.  (It may only work on the Atari version, I'm not certain.)

  10. Posted

    11 hours ago, OLD CS1 said:

    I believe GG Labs has created a REU clone.  As for copying, you are really going to make me pull out my CP/M stuff... or Google, whichever I get to first.  I believe the CP/M directory is different than the CBM directory.  I have no idea if D128/64IT will handle them.

     

     

    Many thanks. We Retroists seem to forget that Google stopped working as an easy search tool a decade or more ago. 

     

    Eating my words, Google led to this:

    https://sites.google.com/site/h2obsession/CBM/C128/cp-m

     

    And the same search engine confirms that SD2IEC will read a D71 format.

     

    There, now was that so hard? I think perhaps Google has cataloged more info on the Commodore machines than some other devices for which I've searched lately. "XTIDE in an AMSTRAD PPC640" anyone?

    • Like 1

  11. Posted

    4 hours ago, OLD CS1 said:

    The Indus GT can only read GCR-formatted disks, so any of the other CP/M formats will be unreadable.  For the most part, though, if he is only working with C128 CP/M stuff he should be fine.  It will be slow, for certain.  A 1581 is fantastic for CP/M, and I recommend an REU as the system gets built up.

     

    5 hours ago, Casey said:

    If I remember right (from years ago) - the CP/M system disk is a flippy disk - not a double sided disk (i.e. you turn it over to use the back side).  It should boot in a 1541 but it certainly would not be fast.  The 1541 can’t use any of the MFM formatted CP/M disks that the 1571 can read however.  May or may not be an issue in your case.  

     

    I think to make a system disk, you use the FORMAT.COM utility in CP/M to format the disk first, and then you just need to PIP the CPM+.SYS and CCP.COM to the new disk and it will be bootable.

     

    Thanks for this. Is there an REU clone design? I should also mention that I have an IEC2SD device, and wonder if D128IT or D64IT can be used to transfer the necessary CP/M data to a floppy. (Or could I boot CP/M from the SD?) I'm not sure how one would use the CP/M format command without booting... unless this can be done on another machine such as a PC first.

  15. Posted

    4 hours ago, RickyDean said:

    Is this beige keyboard from a TI99/4? It looks just like a beige TI99/4a keyboard.

    Probably they used the same tooling. Most beige 99/4a keyboards had computers attached, from what I understand, the inventory of 99/4 keyboards were purchased by a Texas-based computer retailer and resold as "experimenter's Special Purchase", thus the New Old Stock status.  I guess a key identifier would be whether the beige 99/4a's used the mylar method.

    Screenshot 2019-12-02 08.05.37.jpg

  17. Posted

    37 minutes ago, --- Ω --- said:

     

    It that something on top of the keyboard, or are the traces toast?

     

     

    Position.JPG

    That's the point of failure for most mylar keyboards. My fix is to build a mound of solder onto the PC board, then use a piece of poycarbonate (shown here temporarily clamped to the board until I can melt screw holes into it) to put many times more pressure on the connections compared to the original.

    2019-12-01 20.38.28.jpg

  19. Posted

    31 minutes ago, --- Ω --- said:

    If it's a Mitsumi, it's very possible it's in need of overhauling.  It's not the easiest keyboard to mess with either.  

    If it's not the membrane, sometimes, because of age, a wire can break in the ribbon cable causing havoc as well.

     

    Greg, (arcadeshopper) sells replacement ribbon cables if that is what it turns out to be, if it's the membrane keyboard someone here posted instructions on how to repair it.

    I recently installed a NOS keyboard on a 1200XL, which had keys that would finally respond with repeated hard presses, but in this case the unresponsive keys are completely... unresponsive.  I guess I am going back in, although I'm not looking forward to removing the 25 small screws on the back of the keyboard.

    • Sad 1

  20. Posted

    18 minutes ago, arcadeshopper said:

    The pinout is documented for the 4a it should take about a minute to confirm with a meter if the 4 is the same
     

    Some keys work. I was hoping for an easy answer, as it took me about ten minutes to open the case, figure out what was catching (right-angle cartridge header), determine whether to unhook the PSU harness or unscrew the assy. (one can't easily reach the PSU connector release tab,) work out how to close the case with the new longer, stiffer (don't) keyboard cable, close the case, reopen the case to find out what was rattling (sliding port door snuck away), reopen the case to reposition the power jack, reopen the case to figure out why the power-switch would no longer slide to the on-position...

     

    I know I will need to go back in there at some point, the question is do I do that after refurbing the black keyboard, or do I waste time trouble-shooting something when someone here like a Tursi will know the answer. And yes, writing all of this was still easier than opening and closing a 4A.

AtariAge
Forums
Store
General
Follow AtariAge

Copyright ©1998-2021 AtariAge

×
×
  • Create New...