programmable delay tested

test/unit_tests/delayprog_4/test.prsim

@@ -0,0 +1,42 @@
+watchall
+
+system "echo '0'"
+
+set t.a  0
+set t.s[0] 1
+set t.s[1] 1
+set t.s[2] 1
+set t.s[3] 1
+
+cycle
+mode run
+
+assert t.y 0
+
+system "echo '[] setting high'"
+set t.a  1
+cycle
+assert t.y 1
+
+system "echo '[] setting low'"
+set t.a  0
+cycle
+assert t.y 0
+
+system "echo '[] setting configs low'"
+set t.s[0] 0
+set t.s[1] 0
+set t.s[2] 0
+set t.s[3] 0
+cycle
+assert t.y 0
+
+system "echo '[] setting high'"
+set t.a  1
+cycle
+assert t.y 1
+
+system "echo '[] setting low'"
+set t.a  0
+cycle
+assert t.y 0