Once in Configure Mode, several options
are
displayed.
One
of
the
option keys
must
be
pressed
within approximately 5 minutes
of
entering Configure Mode. Otherwise,
the
Boot ROM will
time-out
and
start
power-up over again. Available options are:
• Force Long Memory Test
• Continuous Self-Test
• 50 Hz
CRT
• 60 Hz
CRT
Regardless
of
the
option
chosen, most of
the
self-test will
be
repeated.
If
the
memory
test
has
already been completed
and
the
extended
self-test
option
is chosen,
then
the
main memory
test
portion
of
the
self-test will
be
repeated, otherwise it will not.
Force Long Memory Test
If
the
[I]
key is pressed,
the
self-test will
be
started
over
and
the
long memory
test
will
be
executed. Long memory
test
is a marching/walking ones
and
zeros
test
taking
about
5 seconds
per
1
Mbyte
of RAM.
Otherwise,
the
default
short
memory
test
will
be
executed.
The
short
memory
test
IS
an
address/address
complement
test
taking
about
1 second
per
1
Mbyte
of RAM.
Continuous Self-Test
Pressing
[1]
causes
the
Boot ROM
to
continuously
repeat
the
self-test
portion
of its code.
This
is a toggle switch, so entering Configure Mode while already in Continuous Self-Test Mode,
and
choosing
the
"U' option, will
stop
the
continuous self-test
and
cause
the
Boot
ROM
to
continue
normal operation.
While in
Continuous Self-Test Mode,
the
Boot ROM will
not
wait, beep
or
stop
for most failures,
but
will
just
continue looping
through
self-test. However,
the
following failures will
stop
self-test
looping:
•
CPU
register failure:
In
this
case
the
Boot ROM
stops
with
the
display blanked
and
the
value
8111)
on
the
LEDs.
•
Memory
failure in
the
top
16K bytes:
In
this
case
the
Boot ROM stops
with
the
display blanked
and
the
value
8416
on
the
LEDs.
If
a
non-bit-mapped
video
board
and
monitor
is
connected,
the
message
NEED
GOOD
RAM
ABOVE
FFFFCOOO
will
be
displayed on
that
monitor.
•
Boot
ROM
checksum failure:
In
this
case
the
Boot ROM stops with
the
message
CONTINUE
AT
OWN
RISK
(Press
RETURN
To
Continue)
on
the
display,
the
value
8:316
and
then
beeps four
low
tones
and
two high
tones. Pressing
I Return I will cause
the
Boot ROM
to
continue self-test looping.
Boot
ROM
Functions
125
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