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  9. <TITLE>FTP.FUNET.FI:/PUB/CBM/FIRMWARE/DRIVES/</TITLE>
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  19. <H1><A CLASS="LINK" HREF="FTP://FTP.FUNET.FI/PUB/CBM/FIRMWARE/DRIVES/">FTP</A>://FTP.FUNET.FI/PUB/<A
  20. HREF="../../INDEX.HTML">CBM</A>/<A
  21. HREF="../INDEX.HTML">FIRMWARE</A>/DRIVES/</H1>
  22. <DIV CLASS="TOP">
  23. <P>fIRMWARE FOR cOMMODORE DISK DRIVES.<BR />
  24. aCCORDING TO wILLIAM lEVAK, cOMMODORE USED SIX DIFFERENT NATIVE
  25. DISK FORMATS:<BR />
  26. 2040/3040 - tHIS IS SLIGHTLY DIFFERENT FROM LATER FORMATS:
  27. TRACKS 18 - 24 HAVE 20 SECTORS INSTEAD OF 19.<BR />
  28. 2031/4040/1540/1541/1551/1570 - SINGLE SIDED, SINGLE DENSITY, 48TPI<BR />
  29. 1571 - a DOUBLE SIDED VERSION.<BR />
  30. 8050 - SINGLE SIDED, 96TPI<BR />
  31. 1001/8250 - DOUBLE SIDED, 96TPI<BR />
  32. 1581, 3{CBM-X}" dd WITH mfm<BR />
  33. wHILE WE'RE ON THE SUBJECT, cOMMODORE'S SINGLE DENSITY DRIVES ARE ACTUALLY
  34. DOUBLE DENSITY, AND THE DOUBLE DENSITY DRIVES ARE ACTUALLY QUAD DENSITY.
  35. qUAD DENSITY DISKS HAVE THE SAME CAPACITY OF HIGH DENSITY DISKS, BUT THE
  36. MAGNETIC FILM IS COMPATIBLE WITH DOUBLE DENSITY DISKS.</P>
  37. </DIV>
  38. <H2><A CLASS="ANCHOR" NAME="DIRS">sUBDIRECTORIES</A></H2>
  39. <DIV CLASS="DIRS">
  40. <DL>
  41. <DT><A HREF="NEW/INDEX.HTML">NEW/</A></DT>
  42. <DD>nEW (SERIAL BUS BASED) DISK DRIVES</DD>
  43. <DT><A HREF="OLD/INDEX.HTML">OLD/</A></DT>
  44. <DD>oLD (ieee-488 BASED) DISK DRIVES</DD>
  45. <DT><A HREF="OTHER/INDEX.HTML">OTHER/</A></DT>
  46. <DD>dISK DRIVES NOT MANUFACTURED BY cOMMODORE</DD>
  47. </DL>
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  57. HREF="HTTP://WWW.IBIBLIO.ORG/PUB/MICRO/COMMODORE/FIRMWARE/DRIVES/">HTTP)</A>
  58. &NDASH;
  59. <A HREF="../../readme.HTML">gENERAL INFORMATION</A>
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