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Re: [RomanianHomeComputer] Re: Diskete CoBra

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  • Catalin Mihaila
    Da, merg unitatile de 8, trebuie doar schimbata frecventa ceasului de la interfata FDD (de la 16M la 8M din comutator). Din cate stiu trebuie alt cablu de
    Message 1 of 55 , Apr 20, 2012
      Da, merg unitatile de 8, trebuie doar schimbata frecventa ceasului de la interfata FDD (de la 16M la 8M din comutator). Din cate stiu trebuie alt cablu de conectare intre interfata si unitate.

      --- On Fri, 4/20/12, tdragoslaurentiu <tdragoslaurentiu@...> wrote:

      From: tdragoslaurentiu <tdragoslaurentiu@...>
      Subject: [RomanianHomeComputer] Re: Diskete CoBra
      To: RomanianHomeComputer@yahoogroups.com
      Date: Friday, April 20, 2012, 12:24 PM

       

      Am mai intrebat pe acest grup, n-am primit raspuns, mai incerc o data:

      In multe surse se mentioneaza ca, CoBra accepta unitati de discheta de 8". Poate cineva sa confirme eventual sa posteze o schema de conectare a acestui tip de FDD la CoBra?

      --- In RomanianHomeComputer@yahoogroups.com, "myke p" <p_myke@...> wrote:
      >
      > Am citit undeva ca cobra avea dubla protectie la copierea dischetelor cp/m.
      >
      > The original Cobra CP/M Boot-Disk was copy-protected with 4kB sectors on tracks 1+2 (double sided). So it could not be copied with the standart copy programm (DIP). Due to the poor quality of the original disk they were damaged very soon and hard to replace. So get the debugger, modify the Bootprom to read "standart" 512 byte sectors and copy the 4k Boot-sector to a regularly formated disk. Unfortunatly the software-guys build in additional copy protection mechanisms in CP/M that expected a 4kB sector on the disk - after solving this last chalange with the debugger the cobra booted from regular disk - no begging for special disks any more.
      >
      > sursa
      > http://www.homecomputer.de/pages/easteurope_ro.html#cobra
      >
      > Poate ai noroc de un astfel de eprom
      > --- In RomanianHomeComputer@yahoogroups.com, George Chirtoaca <george_chirtoaca@> wrote:
      > >
      > > Salut,
      > > Idea cu Samdisc e ca ajuta la scrierea dischetelor in format Teledisk pe  o configuratie PC actuala si probabil e mai avansat decat softul de Dos Teledisk. Asta in caz ca scrierea dischetelor e problema.Dar se pare ca problema e la unitate.
      > > Eu nu am incercat dischetele pe Cobra.Am una cu controler floppy dar e incompleta.
      > >
      > >
      > > Sent from Yahoo! Mail on Android
      > >
      >

    • bizonul66
      merg toate dar atentie la unitatile floppy !!! incercati sa testati ce ati scris mutandunitatea de pe pc pe cobra, la mine din 8 unitati doar doua sunt
      Message 55 of 55 , Sep 19 9:47 AM
        merg toate dar atentie la unitatile floppy !!! incercati sa testati ce ati scris mutandunitatea de pe pc pe cobra,
        la mine din 8 unitati doar doua sunt compatibile pe cobra, adica una citeste si dischetacratape cealallta
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