[Coco] quick question
johnstrong at hotmail.com
Thu Dec 27 17:27:15 EST 2007
Thanks for all the answers, I remembered correctly, scary.
I was adding a hex disc editor to my DskTool ulitity that I use with the CoCo
emulator and wanted the numbers to be constitent with a real disk.
I always thought that the interleave was set to 4 to allow time for disk basic
to check for the break key. John StrongStrongWare> Message: 12> Date: Thu, 27 Dec 2007 01:13:32 +0000> From: Phill Harvey-Smith <afra at aurigae.demon.co.uk>> Subject: Re: [Coco] a quick question> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>> Message-ID: <4772FC3C.3070307 at aurigae.demon.co.uk>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed> > Robert Gault wrote:> > Neil Morrison wrote:> > > >> Tracks 0 - 34 Directory on 17> >> Sectors 1 - 18> > And if it helps, and this may be of general interest, DragonDos is > pretty similar except that it can also deal with 80 track and double > sided disks.... so> > Tracks 0..39 or 79, directory on 20, copy on 16> Sides 0 or 1> Sectors 1..18 (though the Sread and Swrite commands ignore the sides> and use sector numbers 19..36 for side 1).> > > And if that is not enough info, the sectors have a skip factor of 4 > > under Disk Basic. That is the sectors exist on a disk in the following > > order: 1, 12, 5, 16, 9, 2, 13, 6, 17, 10, 3, 14, 7, 18, 11, 4, 15, 8.> > Dragondos also uses an interleave of 4 so, it must have been pretty much > optimal for a 0.9MHz 6809.> > Cheers.> > Phill.> > -- > Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !> > "You can twist perceptions, but reality won't budge" -- Rush.
Don't get caught with egg on your face. Play Chicktionary!
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