Test Descriptions
•
OBSI
Step 35. Local Channel Service Request Test - Verifies the correct operation
of
MYCSRQ in response
to:
• CHANRQ
• DEVRQ
Step 36.
51MB
Channel Service Request Test - Verifies the correct operation
of
CSRQ
in
response to:
• CSRQ
•
DIAG
• MYCSRQ
Step
37. Service Poll Response Test - Verifies the correct response for SPOLL.
Step
38. Channel Service Request Timeout Test - Verifies the correct operation
of
TORESET during
channel service request.
Step 39. Obtain Service Information Test - Verifies
that
the device
number
supplied in response to the
SIMB
OBSI
command
is
correctly generated from each of the following inputs:
o DMDEV
• Parallel Poll Response
• NEW STATUS
• RIOC
and
OBSI
3.7
HP-IB
INTERFACE DRIVERS
TEST
This test section verifies
the
correct operation
of
the
ABI
to HP-IB logic which consists of four HP-IB
transceivers and two inverters.
It
is
assumed
at
this point
that
the
PIC and the
ABI
have been completely
tested offline.
A second PIC
is
required
to
perform this test section. The second PIC
is
assumed to be functioning
correctly, although some diagnostics are performed on
it
to avoid catastrophic failures. The two PICs are
connected together via
HP-IB
cables
with
no
other
HP-IB devices connected. Since some of the HP-IB
lines
can
only
be
asserted by the system controller,
it
is
necessary for the PICDIAG to alternate the System
Controller
f'''lction
between the two PICs. This test
is
broken down
into
three
groups
so
that
failures can
be easily located.
The first group
tests
the
HP-JB lines
that
function independently of the handshake. The
IFe
and SRQ
lines fall
into
this category. The ATN, EOI, and
010
lines also fall
into
this category in
the
limited case
of
executing a parallel poll. Executing a parallel poll verifies
that
ATN and EOI
can
both be asseded low,
that
one
data
line
at
a time
can
be asserted low,
and
that
at
least one of the ATN or EOI lines can be
asserted high to stop the parallel poll.
SEP 84
3-8
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