R: Floppy disk: one drive per face

Chuck Guzis cclist at sydex.com
Fri Nov 6 02:13:35 CST 2020


To elaborate on what I said earlier, consider the following set of
definitions for the CPC-6128 as marketed by Schneider:

BEGIN SCH1  Schneider CPC 6128 Side 1 - DSDD 5.25"
DENSITY MFM, LOW CYLINDERS 40 SIDES 1 SECTORS 9,512
SIDE1 0 193,194,195,196,197,198,199,200,201
BSH 3 BLM 7 EXM 0 DSM 180 DRM 63 AL0 0C0H AL1 0 OFS 0
END

BEGIN SCH2  Schneider CPC 6128 Side 2 - DSDD 5.25"
DENSITY MFM, LOW CYLINDERS 40 SIDES 2 SECTORS 9,512
SIDE1 0 193,194,195,196,197,198,199,200,201
SIDE2 0 193,194,195,196,197,198,199,200,201
BSH 3 BLM 7 EXM 0 DSM 180 DRM 63 AL0 0C0H AL1 0 OFS 40
ORDER EAGLE SKIP
END

Why the "SKIP" in the second definition?  Well, if you wanted to format
the second side, you don't want CFMT to write all over the first side.
"SKIP" avoids this.  Strictly speaking, SIDE1 in definition has no
significance, but 22Disk syntax requires it.  You need the eggs with
your ham and eggs, even if you don't like them.

You have to figure that in a product that dates from 1987 that we've
pretty much seen it all.

--Chuck


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