Predefined Attributes 167
END PROCESS int1_proc;int2_proc: PROCESS
BEGIN
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.
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WAIT ON trigger2;-- outside trigger signal
WAIT UNTIL clk = ’ 1 ’;
IF NOT(lock_out) THEN
intsig2 <=int2;
END IF;
END PROCESS int2_proc;int3_proc: PROCESS
BEGIN
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.
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WAIT ON trigger3;-- outside trigger signal
WAIT UNTIL clk = ’ 1 ’;
IF NOT(lock_out) THEN
intsig3 <=int3;
END IF;
END PROCESS int3_proc;int <=intsig1 WHEN NOT(intsig1’QUIET) ELSE
intsig2 WHEN NOT(intsig2’QUIET) ELSE
intsig3 WHEN NOT(intsig3’QUIET) ELSE
int;int_handle : PROCESS
BEGIN
WAIT ON int’TRANSACTION;-- described next
lock_out <= TRUE;
WAIT FOR 10 ns;
CASE int IS
WHEN int1 =>
.
.
WHEN int2 =>
.
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WHEN int3 =>
.
.
WHEN int4 =>
.
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WHEN int5 =>
.
.
END CASE;
lock_out <= false;