ZiLOG System 8000 Hardware Reference Manual page 306

HRM
contents.
EXANPLE:
READ
STATUS
Zilog
HRM
The STATUS shows the current unit status.
COMMAND: SUNIT unit
DESCRIPTION:
If NO parameter is given, this command shows the
current unit number. If a parameter is given, SUNIT
sets the current disk unit to the parameter value as
well as retrieving the drive-size parameters stored in
a table. The format parameters are also changed. The
drive-size and format parameters change as follows:
maxcyl
=
#
of cylinders on drive (per table)
maxhead
=
#
of heads on drive (per table)
maxsec
=
#
Active sectors/track (per table)
fmtsec
=
new max sec value
+
1
nsec
=
new max sec value
+
fspare = new maxsec value
fbad
=
ffffH
maxcyl, maxhead and max sec are used to do boundary
checking on commands that increment the disk address.
fmtsec, nsec, fspare
&
fbad are parameters used during
FMT, FVOL and FRD commands.
EXAMPLE:
SUNIT
SUNIT
The first line does not change the current unit,
because there is no parameter given. It simply
displays the current disk unit. No drive-size or for-
mat parameters are affected.
The second line sets the current unit to 1. The
drive-size and format parameters change according to
the values stored in a table in SMDMON.
COMMAND: SWSEG wseg / SWOFF woff
DESCRIPTION:
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Zilog .
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