Motorola EXORdisk II User Manual page 22

GENERAL SYSTEM OPERATION
2.3 -- Initialization Error Messages
operating
system~
then a
t~o-character
error message
~ill
be
displayed and control
return~d
to the. EXbug
monitor~
The following
initialization. All
errors
can be
produced during
two-character messages begin with the
letter
liEu.
Message
El
E2
E3
E4
E5
Probable Cause
A
c~clical
redundancy check (eRe)
error was detected while reading the
resident operating system into
m-e-m-o r
1:1 •
The diskette has the write protection
tab punChed out. During
~ne
initialization process, certain
information is written onto the
diskette.
The diskette is not damaged and can
still be used ror a system diskettej
howeverl the write -protection tab
must first be covered
~ith a piece of
opaque tape to allow
~riting
on the
diskette.
The drive is not ready. The door
is
open or the diskette is not yet
turning at the proper speed.
Ir
the
diskette has been inserted into the
drive with the wrong orientation, the
"not ready" error
~ill
be also
generated. If
a
double-sided
diskette is used in the EXORdisk
II
drivesl this error Ulill also occur.
Closing the dool'l waiting
a
little
bit ·longer before entering the
IIEBOOiG u or "MDOS" command, or
turning the diskette around
so
it is
properly oriented should eliminate
this error.
A
deleted data mark was detected
while reading the resident operating
system into memory.
A
timeout interrupt occuTred.
This
indicates. that a diskette controller
function was not completed within the
allotted time. This errol' can also
occur
if
the
ABORT
pushbutton is
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