Core1553BBC MIL-STD-1553B Bus Controller
Table 15 • Condition Codes (Continued)
Condition Code Function Description
10111
11000
11001
11010
NBR
NSR
Performs the instruction if the Broadcast Received bit was not set in the last received status word
Performs the instruction if the Service Request bit was not set in the last received status word
Performs the instruction if the Message Error bit was not set in the last received status word
NME
NSWE
Performs the instruction if the RT address field is correct and the instrumentation bit is not set, and
none of the reserved bits are set in the last received status word
11011
NOSWAB Performs the instruction if no bits (ignoring the RT address field) are set in the last received status
word
11100
NASYNC Performs the instruction if asynchronous message processing is not active
11101
NEXT
Performs the instruction if the External flag input is inactive '0'
11110
NSFLAG Performs the instruction if the previously stored flag bit was not set
Others 0xxxx
Others 1xxxx
Illegal
Illegal
Equivalent to NEVER
Equivalent to ALWAYS
v4.0
15
ACTEL [ Actel Corporation ]
