HRM
Zilog
HRM
a.
Reads 100H words from the disk
address
into
the
memory buffer.
b.
Increments the sector number by 1
(carrying
into
head and cylinder numbers).
c.
Decrements the loop counter
(initially
10),
and
returns to step "a" if it is still positive.
(6)
If the user forgets the available commands, the command
HELP
will
display
the
entire
list
of commands and
parameters.
ERROR MESSAGES
WDCMON can issue the following error messages
where:
u = unit number ( dec imal)
ccc = cylinder number (decimal)
h = head number (decimal)
ss = sector number (decimal)
dr = contents (hex) of drive ready register
ds = contents (hex) of disk status register
oe = contents (hex) of operation error status register
os = contents (hex) of other status register
'xx = value
(hl~x)
of command issued to the WDC
HARD ERR CMD=xx DISK=(u,ccc,h,ss) DS=ds DR=dr OE=oe OS=os
An uncorrectable error occurred
when
command
xx
was
issued.
SOFT ERR CMD=xx
DISK=(u,ccc,h,ss) DS=ds DR=dr OE=oe OS=os
A correctable
error
occurred
when
command
xx
was
issued.
LAP SUMMARY
WDCMON is an interactive monitor; it does
not
count
laps.
It
does,
however,
maintain
a
table
of
statistics,
as
described under LAP SUMMARY of the WDCCRC test
description.
This
table
is
displayed
by entering the REC command (see
below).
It is also displayed by entering
E
in
the
SADIE·
PAUSE menu.
A-17
Zilog
A-17
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