Vector Graphic Extended Systems Monitor Bedienungsanleitung Seite 12

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Seitenansicht 11
Vector
RAID
Reference
Manual
The
most
significant
aspect
of
this
simulation
process
is
that
the
entirety
of
~is
information
is
refreshed
on
the
screen
instantaneously
(unless
supressed)
after
each
instruction
I s
simulated
exeOJtion.
Most
of
the
screen
is
used,
except
for
the
lcwer
6
lines
which
are
reserved
for
the
target
program
to
display
video
massages.
This
use
of
the
full
screen
for
system
status
can
only
J:::e
accanplished
with
rnenory-mapped
video,
a
Vector
Graphic
hallmark.
It
is
a
pJWerful
departure
from
the
single
line
status
display
of
development
systems
using
serial
tenninals.
Since
the
status
of
rrost.
important
asr:ects
of
the
system
are
on
the
screen
all
the
t.iIre,
the
user
does
not
have
to
repeatedly
request
status
on
various
aspects
e
This
significantly
reduces
the
development
time
of
new
software.
The
user
is
given
a I'l\.lll'Cer
of
ways
to
siIrulate
exeOltion
of
a
program
under
control
of
RAID: sirx11e
s~ing,
slew
(one
instruction
each
1/2
second),
fast
with
full
status
display
refresh,
faster
with
partial
status
refresh,
and
faster
yet
with
status
refresh
occuring
only
when
program
simulation
passes
selected'
addresses
in
rierorye. A
progtam
can
also
be·
exeaJted
"directly",
with
no
siIrulation,
as
if
RAID
were
not
present.
'llle
user
can
halt
the
simulated
execution
at
preselected
points.
Such
a
halt.
can
take
place
when
the
program
passes a
selected
a::1dress., when a.
selected
cpcode
is
executed,
when a
selected
register
contains
a
certain
value,
or
when a
selected
rrenory
location
contains
a
certain
byte.
These
features
are
useful
during
the
debugging
process,
particularly
when
it
is
necessary
to
execute
rapidly
during
certain
parts.
of
the
target"
program,
l::ut
to
slew
doNn
or
step
at'
certain
places
or
tmder
certain
conditions
in
order
to
isolate
an
event.
As
further
aides
to
detugg.ing·,
the
user
can
simulate
execution
of
single
instructions
(not
part·
of.
a. program)
to
view
the
affect",
can
change'
the
value
of
any
location
in
IIe10ry
or
of
ar'¥
register
wj.
thout
writing
a
program
to
do
so,
and
can
pop
words,
off
of
or
push.
words.
onto
the.
stack
withc:ut
writing
a
pro;raru.
The
asserrbly
language.
prograrmer-
will
find
RAID
an
indispensible
tool
which
dramatically
reduces the. de1:uggirxJ
effort,.
particularly
in
cc:mparison
with
the
less·
scphisticated.
8080
deblggers·
already
available
for
Vector
Graphic
systems.
De.tuggin3
nore
quickly
neans
a. pt"Cqram
available·
at
an
earlier
date
In
this
way
RAID
significantly
increases
the·
value
of
sof.tware·
written
on
Vector
Graphic·
systems.
1-2
Rev.
l.l-A
5/30/80
Seitenansicht 11
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