Operator
Familiarization—MicroLab
|
Instruction
If
you
enter
an
address
that
is
not a
1K
increment
from
0000, the
MicroLab!
will
automatically
move
the
relocatable
RAM
to
the
next
lower
allowable
base address.
For
example,
if
you tried to
enter
FFOO
in
the
previous
example,
the
MicroLab
|
would have simply
changed the
display and
base address
to
FCOO.
Self-Test
The
self-test
feature
of
the
MicroLab
|
checks
the
internal
operations
of
the
MicroLab
|
and personality
card.
The
self-
test
is
initiated from
the
keypad,
and each step
is
echoedto
the
MicroLab
|
display.
The
self-test
function checks
the
following
elements
of
the
MicroLab
I:
Self-TestO
The
personality
card low-order
ROM
checksum
is
calculated
and
verified.
Self-Test
1
The
personality card
high-order
ROM
checksum
is
calculated
and
verified.
Self-Test
2
The
MicroLabl
RAM
is
tested
for
read/write
capability.
Self-Test3
The
MicroLab!
relocatable
RAM
is
moved
to
each
possible
location.
Self-Test
4
|
The
MicroLab|
display
is
tested.
Self-Test
5
The MicroLab
|
keypad
is
tested.
Self-Test 6
The two RS-232-C ports
are tested.
Self-Test 7
The
cassette
tape
port
is
tested.
If
you
wantto
test
the
RS-232-C
ports
and
the
cassette
port,
you'll
need
to obtain a
standard
RS-232-C
cable and one
of
the
cassette
tape
audio
cables
supplied
with
the
MicroLab
|.
These ports are
tested
by
“wraparound”.
That
is,
one
RS-232-C
port
feeds
signals
to
the other
RS-232-C
port,
and the
cassette
output feeds the
cassette
input. The
RS-232-C port
“wraparound” requires
that
one end
of
a
standard
RS232-C
cable
be
plugged
into
one
port,
while the
other
end
is
plugged
into
the
other
port.
The
cassette
port
“wraparound”
requires
that
one
of
the
cassette
port audio
cables
be
plugged
in
to both
the cassette
port input
and
output.
Starting
the
Self Test
To
start
the
self
test
function,
press
(SH/FT) SELF TEST.
The
display
will
show
“Sn”.
“Sn”
indicates that the
MicroLab
|
wants
to know
which
of
the
eight
tests
you
want
to
do
first.
NOTE
Certain
personality cards
do
not
perform
all
eight
tests. Check
the Instruction Manual
supplement
for
your
particular
personality
card.
2-12
Self-Test 0
Press the
O
key.
The display
will
show
“SELF
0”. This
indicates that the self test
routine
is
checking
the
personality
card low-order
ROM
checksum.
Self-Test
1
As
soon
as
the
checksum
is
verified,
the
MicroLab
I
display
will
show
“SELF
1”.
Self-test
1
checks
the
personality card
high-order
ROM
checksum.
When
the
ROM
checksum
test
is
finished,
the
display
shows
"SELF
2”.
Self-Test 2
The
"SELF
2”
test writes
two
hexadecimal
values
to each
MicroLab
|
RAM
location,
then
reads
the
values
to
check
for
data
integrity.
The original
RAM
contents
are
not changed.
Self-Test 3
The next
test,
"SELF
3”,
checks the relocatable
RAM
feature
of
the
MicroLabl.
The
1K
byte
segment
of
relocatable
RAM is
moved
to
every possible
base
address.
After
each
move,
the
first
and
last locations
inthe
RAM
are
written
to
and read
from
verify
that
relocation occurred.
After
this test,
the
relocatable
RAM
is
left
at the default
location
for
the
personality
card used.
Self-Test 4
“SELF
4”
tests
the
MicroLab!
display.
Each
character,
starting
with
0,
is
placed
in
each
digit
location.
The
test
begins
by
placing
O
in
the
rightmost
digit,
then
moving
theO
across
the
display
to
the
leftmost
digit.
Then a1
is
placed
in
the
rightmost
digit
and
moved
across
the
display.
This
test
continues
until
every printable
character has
been
displayed.
It’s
up
to
you
to
visually
verify
that
the
display
is
functioning
correctly,
since
it’s
impossible
for
the
MicroLab
|
to test the
LEDs
themselves.
During
the
"SELF
4”
test,
you should
see
the following
characters:
0123456789AbCdEFHLroPYn’'
J-Uc?
Summary of Contents for 067-0892-00
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