Test Descriptions
Test 20. BEGIN
FLAG/LEFT-RIGHT
FLAG
--
Tests
the
operation
of
the
Begin Flag and
Left/Right
Flag
Circuitry
on the
SIB.
It
uses the diagnostic DMA routine
that
increments
the
address
counter
a
different
number
of times for each state
of
BF
and
LRF.
It
then
stores
the
count
in
memory. The test
is
used to check
that
the
flags
are
automatically updated.
3.3
ASYNCHRONOUS INTERFACE BOARD (AlB)
TESTS
This test section tests the AlB. The AlB
is
the asynchronous interface section
of
the
TIC board. The main
program determines which ports to test and what tests to
run
on those
POitS.
The loop count
is
passed to
Test'AIB and indicates the
number
of
times to
run
each test.
The AlB tests
are
divided
into
two groups: (1) the tests
that
run
on one port
at
a time, and (2) the test
that
runs
on all of the ports to be tested (realloopback). This test section first executes
the
first group of tests
on each port. The tests
are
executed the number
of
times specified by the loop count. The MCC Dump,
MCC Self-Test, MCC-PCC Communications test, Modem
Signal test, and Modem Port Addressing tests
execute loop count times
if
port 7
is
specified as a port to
be
tested. Finally, the real loopback test
is
executed on all selected ports.
After
the
testing
is
completed, a
report
is
printed
that
indicates which
ports passed and which ports failed.
Test
21. PCC SELF TEST
--
Performs a
self-test
on one port and checks the results returned from
that
port's
PCe.
It
checks:
1)
that
an
interrupt
is
received;
2)
that
it
is
the
correct interrupt;
3)
that
the
interrupt
came from
the
correct port;
4)
that
the
correct
number
of bytes were transferred; and
5)
that
the
results
of
self-test
are
correct.
Test
22.
PCC DUMP
--
Checks the operation
of
a
dump
on a
PCe.
It
returns a logical value to
indicate
that
the test passed.
It
performs the following:
1)
The Read
Data
DMA pointers for the port
that
is
being dumped
are
set
up.
2) A Halt
I/O
is
sent to the port
so
that
the
initiation
of
the
dump will
be
controlled
by
a
later
Start
I/O.
3)
A Freeze Port and a
Start
I/O
are performed to
initiate
the dump.
4) Checks
are
made to insure
that
an
interrupt
occurred,
that
the
interrupt
was the correct
one, and
that
the
interrupt
came from the correct port.
Test
23. MCC SELF-TEST
--
Initiates a
self-test
of
the MCC, PCC, and
MSC
if
port 7
is
to
be
tested
on the
TIC. The self-tests are initiated
bv
disabling tht'
MCC
3fitl. MSC anc. then
issl.lin(!
an
MCC
self-test
control order to set the most
~iQl1ificant
hit
Til;.
~m.t;"~
w~;·.
f·"
~n
interrupt
checks
that
it
is
the correct one (15), and checks
that
it
came from the port
that
had
been
ser:1
the
control order
Finally.
t;le p'ls;;/f<lil
bit
of
each
byte
returned
;,
c!1ecked
for
an:"'
prob'ems
dUrlng
self
test.
SEP 84
3-4
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