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Thread: California Computer Systems model 2422 FDC for Exidy Sorcerer

  1. #11
    Join Date
    Jan 2007
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    Quote Originally Posted by gekaufman View Post
    U21 is not installed, I have read U22 and U23 (74S287 PROM) but can't seem to append a .bin or .hex file
    Just put the files in a Zip archive and post that. VCF software apparently doesn't care what's in a Zip file.

  2. #12

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    Quote Originally Posted by exidyboy View Post
    Can you please scan the documentation, scan the envelope (unless it's just plain), photograph the ROMs and dump them?
    That is all
    Done, see this thread.

  3. #13

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    Quote Originally Posted by snuci View Post
    Sorry, I have been super busy lately. Here's a picture of my CCS 2422 floppy controller. http://vintagecomputer.ca/wp-content...-FDD-Front.jpg

    I can dig it out and read the EPROM but I'm not sure if I have the equipment to read U22 and U23. I do have some documentation scattered in the SCSUG newletters in this directory: http://vintagecomputer.ca/files/Exid...up%20Meetings/ Have a look through them as there are tidbits here and there of my specific set up including the custom enclosure. One particular newletter covers the modified 2422 BIOS for Exidy Sorcerer specifically here: http://vintagecomputer.ca/files/Exid...ber%201986.pdf

    I'll have to check if I have the equipment and can read the U22 and U23 22V10 GALs.

    Hope this helps and I am sorry for the delay.
    So far I did not get anywhere with the card (tried monitor 1.3C and tried several boot addresses). Does it actually work in your system? If so I'd appreciate it if you could dump the eprom. I don't think believe U22 and U23 are specific to the sorcerer, but the rom may well be.

  4. #14
    Join Date
    Nov 2012
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    Richmond Hill, Ontario, Canada
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    1,149

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    Dutchacorn,

    Here is the 2716 at u24 of the CCS 2422 floppy board: http://vintagecomputer.ca/files/Exid...Exidy-ROMs.zip
    I don't know if it works presently as I haven't gotten to it yet but the computer I have is from the president of the Southern California Sorcerer User Group (who wrote the newsletter) so I don't have any doubts that this once worked.

    Note: Added the two 74S287s at U22 and U23

    Good luck.
    Last edited by snuci; December 10th, 2019 at 05:15 PM.

  5. #15

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    Quote Originally Posted by snuci View Post
    Dutchacorn,

    Here is the 2716 at u24 of the CCS 2422 floppy board: http://vintagecomputer.ca/files/Exid...Exidy-ROMs.zip
    I don't know if it works presently as I haven't gotten to it yet but the computer I have is from the president of the Southern California Sorcerer User Group (who wrote the newsletter) so I don't have any doubts that this once worked.

    Note: Added the two 74S287s at U22 and U23

    Good luck.
    Thanks Snuci! Gary very kindly sent me U22, U23 and the 2716 that is on his card. The 2716 is the same as the one that you attached, so that seems to be the default MOSS.

    Regrettably I have not managed to get the card to work yet, with U23 and U22 installed it behaves the same as without; boot and bank lights are on. The boot led is sometimes off. Seems random, it does not matter if I have the auto boot jumper on or off.

    The bios changes are only relevant (?) if CP/M actually boots, so my first priority is to be able to access the FDC at all. The boot address 0000H as described in the manual can't be accessed (?) from the Sorcerer because that is a local memory address in the Sorcerer. Still very new to the S-100 and S-100 expansion stuff, so there are probably a lot of errors and lapses in my assumptions and understanding.

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