User`s manual

Code Set in RIC 12-1 5
IS 14 13 I 12
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Table 3-6 (Cont)
Receive Function Interrupt Conditions
(For Asynchronous Line Cards)
Meaning
Undefined
Undefined
Byte
Count Zero:
The receive byte count for this line was zero prior to receipt
of the character set
in RIC 00-07. Thus, the character was not stored as no assigned storage was
available.
Undefined
Undefined
Undefined
Processing Error
00:
A non~xistent memory time-out occurred when the DVII attempted to store
the character set
in RIC 00-07.
Processing Error 0 I :
A non-existent memory time-out occurred when the DVJ J
attempted to fetch
the control byte corresponding
to the character set in RIC 00-07.
Processing Error 10:
A DVII received signal on the memory parity error line from the PDP-II when
the DVI J
attempted to store the character set in RIC 00-07. This condition
indicates a defect
in the memory parity logic, as the PDP-II generates parity
error signals only on core memory read operations.
Processing Error 11:
A memory parity occurred when the
DVII attempted to obtain the control
byte corresponding
to the character in RIC 00-07.
NOTE A priority encoding scheme is used by an asynchronous line to present a multiple error code condition. Any
error flag combination that contains an overrun error
is presented as an Overrun Error (code 0010) in the
RICR register. A framing error and parity error combination is presented as a Framing Error (code 0011) in
the RICR register. A multiple error condition that displays a Parity Error (code 0001) does not exist. This
priority scheme
is used only by the Asynchronous Line Card. Existing error code bits that are generated on
a synchronous line are not affected by this scheme.
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