isc output
turing isc:1> isc array.isc
25

turing isc:2> isc -t array.isc
            Begin trace
line:   36 loc:    0 contents: lim     r9  (0)            0
    reg[9] = 0

. . . lots of trace output . . .
------- output ------
25
--------------------
line:   88 loc:   32 contents: junc    r9  (0)
    jumping unconditionally to 0

trace flag