Image Map Image Map

Search:

Type: Posts; User: exidyboy

Page 1 of 6 1 2 3 4

Search: Search took 0.01 seconds.

  1. WTB Micropolis 1015 100TPI floppy disk drive

    Most common source would be CBM8050 dual disk drive (although other brands were also used).
    This is for repair of an Exidy FDS.
  2. Thanks for providing this international...

    Thanks for providing this international perspective and for including images that reveal how visitors to the event are responding to the machines rather than just shots of the hardware itself.
  3. Replies
    16
    Views
    450

    This seems like a forgotten chapter in the...

    This seems like a forgotten chapter in the history of magnetic data storage - have not come across it any books that deal with the topic.
    Is there are a generic name for this form factor/approach to...
  4. The presence of the source code for a 16 sector...

    The presence of the source code for a 16 sector Micropolis BIOS on one of the disks imaged does not mean that is what has been assembled and is actually running on the system tracks of these Vista...
  5. Kryoflux team are never going to do that. Do you...

    Kryoflux team are never going to do that.
    Do you mean write the image back to a soft-sectored disk with the same geometry as the hard-sector disk and try and boot it on a Sorcerer with some...
  6. Kryoflux team have offered this definition: ...

    Kryoflux team have offered this definition:


    diskdef exidy
    seclen 512
    tracks 50
    sectrk 8
    blocksize 1024
    maxdir 64
    skew 0
  7. Does this image convince you? ...

    Does this image convince you?

    http://i.imgur.com/co6VuOU.jpg
  8. Replies
    74
    Views
    8,938

    Is the blue cable in the photo the one that...

    Is the blue cable in the photo the one that attaches to the second "add-on" drive while the male header attaches to the 50 way expansion connector via a straight through cable?
    What physically is...
  9. Replies
    74
    Views
    8,938

    I've been loaned a 100TPI Micropolis drive and...

    I've been loaned a 100TPI Micropolis drive and have around 10 soft-sector disks to image.
    Many are unfortunately Control Data brand which in my experience do not age well but these discs are from...
  10. Hi Dwight, Yep Vista is a 10 sector system as...

    Hi Dwight,

    Yep Vista is a 10 sector system as was Northstar I believe.

    Here is the raw preservation stream as visualised in the HxCFloppyEmulator utility:...
  11. Replies
    17
    Views
    1,612

    Dutchacorn - who used to own a Vista controller...

    Dutchacorn - who used to own a Vista controller for the Sorcerer - has confirmed that the board pictured by the OP is the same as the one he had.
    Now we just need to find one, photograph it, dump...
  12. Replies
    17
    Views
    1,612

    Checksum algorithm has been reverse engineered by...

    Checksum algorithm has been reverse engineered by Simon Owen in spite of a complete lack of technical information.
    Larry Kramer has been tasked with fine-tuning the cpmtools definition.
  13. Replies
    17
    Views
    1,612

    According to an article in a 1980 newsletter...

    According to an article in a 1980 newsletter there is a boot ROM.
    Typically at B900H for a 32K machine or D900H for a 48K machine (which meant you could no longer use your ROMPac).
    I don't believe...
  14. Replies
    17
    Views
    1,612

    I can't see any ROM's in the OP's photo but I...

    I can't see any ROM's in the OP's photo but I don't know for sure that the discs I am working with were written with that board.
    It is possible the S-100 to Sorcerer interface board held an EPROM. I...
  15. Replies
    17
    Views
    1,612

    A 1981 newsletter clears up the confusion as to...

    A 1981 newsletter clears up the confusion as to how it can simultaneously "S-100 free" and yet an S-100 card.

    The Vista E-20 system for the Sorcerer consisted of a DELTA double-density controller...
  16. Replies
    17
    Views
    1,612

    Have not turned up any docs yet. The OP's card is...

    Have not turned up any docs yet. The OP's card is S-100 but Sorcerer newsletters suggest the Vista system sold in Oz interfaced directly to the 50 way connector.
  17. Replies
    17
    Views
    1,612

    Looks like your Northstar intuition is correct....

    Looks like your Northstar intuition is correct. Please see snippet from a 1985 newsletter article. Keywords: Vista, Micropolis, 100TPI

    https://i.imgur.com/LsFpHHT.png
  18. Replies
    17
    Views
    1,612

    Northstar profile doesn't successfully decode a...

    Northstar profile doesn't successfully decode a Kryoflux image of a Vista disk for the Sorcerer in HxC though :cool:

    https://i.imgur.com/TnpExse.png
  19. Replies
    1
    Views
    442

    Exidy Sorcerer Large Collection

    Does anyone know whether these items were acquired by a cultural institution or have they been lost to a private collector?

    https://surfdaddy.com/tag/sorcerer/

    They sat on ebay for a long time...
  20. My hypothesis is that the tape (substrate)...

    My hypothesis is that the tape (substrate) doesn't actually lose tensile strength. My (untested) theory is that the lubricant on the tape fails and becomes sticky.

    Stringy floppy wafers are like 8...
  21. Can they not be imaged with Imagedisk as...

    Can they not be imaged with Imagedisk as discussed here:
    http://www.vcfed.org/forum/showthread.php?52726-HP-1650-1651-Logic-Analyzer-Disk-Images
  22. Replies
    10
    Views
    1,812

    Are you interested in one? 54346

    Are you interested in one?
    54346
  23. Replies
    3
    Views
    2,653

    Coincidently I have recently put together a...

    Coincidently I have recently put together a simple single-sided EPROM reader shield for Arduino.

    To keep things conceptually simple I used a CD4040 12bit counter to generate the address signals.
    ...
  24. Replies
    199
    Views
    21,133

    Well said.

    Well said.
  25. Replies
    27
    Views
    1,412

    They look good in the photo but I have used them...

    They look good in the photo but I have used them in practice on early Raspberry Pi's.
    They are not very strong and I broke one.
    Being nylon and flexible and having a narrow bae held down with a...
Results 1 to 25 of 145
Page 1 of 6 1 2 3 4