Z8OQT
3-22.
QUICK
FILL
AND VERIFY
Quick Fill and Verify
fills
blocks of memory with user-selected data, then verifies
the accuracy of the contents. Quick Fill and
Verify is
controlled
by writing setup
informationinto
special addresses
as
described below.
Quick Fill and Verifytests are much faster
than
the mainframe’s normal memory
tests. In
addition,
they allow the user
to
customize special memory tests, such
as
might be desirable when testing a memory-mapped video display.
Three
variations
of Quick Fill and Verify are available. The variations are
specified when writing the ending address (using the
9000
Series) or entering
l,
2,
or
3
at the
keyboard
(using the 9100 Series).
0
Quick Fill (specified by
1)
writes the
data that
is
contained in the starting
address to all of the addresses in the block.
0
Quick Verify (specified by
2)
reads
data
from all of the addresses in the
block and
compares
each one
to
the
data
contained in the
starting
address.
Errors
are
reported
via the special addresses described below (for
9000 Series) or
to
the display (9100 Series).
0
Quick Fill
and
Verify (specified by
3)
combines Quick Fill and Quick
Verify into one step.
'
3-23.
Using the
9000
Series
for
Quick
Fill
and
Verify
NOTE
Special addresses
mentioned
in the
followingparagraphs
are also
valid
for
9100 Series mainframes. However, they are
not
necessary
because the 9100 Series
provides
softkeys
to
directly access these
pod
functions.
The
recommended method
of
running pod-
controlled
quick tests
from
the 9100 Series
is
given
under
a separate
heading.
Quick Fill and Verify tests are specified in a manner similar to the Quick RAM
test. The
data to
be
written to
all addresses in the block
is
first written
to
the
starting
address,
then
the
starting
and ending addresses are specified by writing
to special addresses. The
starting
address
is
defined by a
WRITE
@
4X
XXXX=0, where X XXXX
is
the
addressto
be used
to start
the test. The ending
address, address increment, and test specification are defined by a WRITE
@ 4Y
YYYY=ZN, where
Y
YYYY
is
the desired ending address,
Z is
the
optional
increment, and N
is
the test specification.
If
Z
is
not
specified or
is
specified
as 0,
3-16
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