Routine Returned Information
Number
Description Status
Data
(hex)
Meaning
(-
COM10
Tests that the Expansion feature
86
Good
test
for
communications
reset command resets the interrupt adapter.
level and long space interrupt
status.
96 Good
test
for
Expansion feature.
(
COM11
Tests that alternating bit patterns 10 bytes
of
AA
Good test.
can be transmitted and wrapped
10
bytes
of
E1
Not
timer interrupt.
back correctly.
10 bytes
or
E2
Interrupts
too
frequent.
COM12 Tests that all
O's
pattern can be
10 bytes
of
00 Good test.
transmitted and wrapped back
10 bytes
of
E1
Not
timer interrupt.
(
correctly. 10 bytes
of
E2
Interrupts
too
frequent.
COM13
Tests that all
1's
pattern
can
be 10 bytes
of
FF
Good test.
transmitted and wrapped back
10
bytes
of
E1
Not
timer interrupt.
correctly.
10
bytes
of
E2
Interrupts
too
frequent.
COM14 Tests
for
timer interrupt when start 97
Good test.
bit
received while in receive mode.
COM15 Tests
for
inactive timer interrupt 00
Good test.
when no start
bit
received while
in
receive mode.
COM16 Tests that dropping out
of
receive
00
Good test.
mode after a start
bit
is received
prevents a timer interrupt.
,-<;
ij
\'
"
COM17 Tests
for
an
inactive timer interrupt
00
Good test.
when a short start
bit
is received
while
in
receive mode
with
the
start
bit
check enabled.
COM18
Tests
that
a receive data bit can be
86
Good
test
for
communications
set and that the Expansion feature
adapter.
reset command resets it.
96
Good
test
for
Expansion feature.
03
Bit cannot be set.
COM19
Tests that data set ready and clear
E6
Good
test
for
communications
(
to
send status bits can be set.
adapter.
F6
Good
test
for
Expansion feature.
(
Diagnostic Program Routines 3-57
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