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  • Re: Speeder DOS interleaves

    From schepers@schepers@ist.uwaterloo.ca (Peter Schepers) to comp.sys.cbm on Monday, January 26, 2004 13:36:49
    From Newsgroup: comp.sys.cbm

    In article <Pine.LNX.4.58.0401250147520.4281@Bfjrtb.SbkInyyrl.arg>,
    Glenn P., <C128UserDELETE-THIS@FVI.Net> wrote:
    Something has a sector interleave of 10?! Yeesh! That's news to me! My >understanding is that stock 1541's default to 8, and stock 1571's
    default to 6.

    It's been 10 all these years, Glenn.

    The only certain knowledge I can offer is that the best sector interleave
    for JiffyDOS is 4. Too bad you didn't ask about JiffyDOS! :)

    Thanks for that info, but I was interested only in hardware speeder DOS's. There's too many software speeder carts out there. The hardware ones, on extended disks, modify the standard D64 BAM sector to store the entries
    for tracks 36-40.

    -----------------------------------------------------------------------------
    Peter Schepers, | Author of : 64COPY, The C64 EMU converter
    Info Services and Technology | get from: http://www.fairlight.to
    University of Waterloo, | My opinion is not likely that of the
    Waterloo, Ontario, Canada. | University, its employees, or anybody
    1-519-888-4567 ext 2456 | on this planet. Too bad!
    --- Synchronet 3.18b-Win32 NewsLink 1.113
  • From schepers@schepers@ist.uwaterloo.ca (Peter Schepers) to comp.sys.cbm on Monday, January 26, 2004 13:49:22
    From Newsgroup: comp.sys.cbm

    Peter Schepers <schepers@ist.uwaterloo.ca> wrote:

    What is the sector interleave for ProLogic, Dolphin and Speed DOS? I can't >believe they would be the default 10. I've done some preliminary web >searching but can't find this info.

    Many thanks to Wolfgang Moser for his very in-depth analysis of the
    various speeder formats, especially his delving into the ROM's to
    determine why there were differences in the overflow interleave values.

    Thanks also go to Nicolas Welte who explained why the interleave wasn't different (much) from the standard. This info was very helpful, and will
    be included in my FORMATS documents.

    -----------------------------------------------------------------------------
    Peter Schepers, | Author of : 64COPY, The C64 EMU converter
    Info Services and Technology | get from: http://www.fairlight.to
    University of Waterloo, | My opinion is not likely that of the
    Waterloo, Ontario, Canada. | University, its employees, or anybody
    1-519-888-4567 ext 2456 | on this planet. Too bad!
    --- Synchronet 3.18b-Win32 NewsLink 1.113