[comp.os.cpm] Kaypro SSDD and DSDD parameters

mwilson@crash.cts.com (Marc Wilson) (02/16/90)

Here are the parameter files for the Kaypro:

KAYPROSS.DSK:

NAME	= Kaypro II (SS DD) - untested
SPT	= 40 
BSH	= 3 
BLM	= 7 
EXM	= 0 
DSM	= 194 
DRM	= 63 
AL0	= 240 
AL1	= 0 
CKS	= 16 
OFF	= 1 
SKEW	= 0,1,2,3,4,5,6,7,8,9,10
DENSITY	= DOUBLE
SIDES	= 1 
SECTORM	= SAME
TRACKM	= DOWN
ALLOC	= 1K
SECSIZE	= 512

And the parameters for the DS disks...

KAYPRODS.DSK:

NAME	= Kaypro IV (DS DD) - untested
SPT	= 40 
BSH	= 4 
BLM	= 15
EXM	= 1 
DSM	= 196 
DRM	= 63 
AL0	= 192 
AL1	= 0 
CKS	= 16 
OFF	= 1 
SKEW	= 0,1,2,3,4,5,6,7,8,9,10
DENSITY	= DOUBLE
SIDES	= 2 
SECTORM	= CONTINUOUS
TRACKM	= DOWN
ALLOC	= 2K
SECSIZE	= 512

-- 
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Marc Wilson
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mlinar@eve.usc.edu (Mitch Mlinar) (02/17/90)

In article <1518@crash.cts.com> mwilson@crash.cts.com (Marc Wilson) writes:
#Here are the parameter files for the Kaypro:
#
#KAYPROSS.DSK:
#
#SKEW	= 0,1,2,3,4,5,6,7,8,9,10
#DENSITY	= DOUBLE

This is actually only part of the story.

There are two types of skew: hardware and software.

Only single-density disks (with a couple stupid exceptions) ever used a
software skew.  Kaypro, Xerox, and the like use hardware skew for double
density.

What Mark is pointing it is that the software does not see any skew since the
disk has been formatted with the skew on it (saves xlation time and memory).