IBM 5170 Technical Reference page 336

Loop
ex
Times
11100010 1 disp
LOOPZ/LOOPE
=
Loop while Zero Equal
Loop while Zero Equal
111100001 1
disp
LOOPNZ/LOOPNE
=
Loop while Not Equal Zero
Loop while Not Equal Zero
1 11100000 1 disp
JCXZ
=
Jump on CX Zero
Jump on
ex
Zero
1 11100011 1 disp
ENTER
=
Enter Procedure
Enter Procedure
11001000 1 data-low 1 data-high L
L=O
L=l
L>l
LEAVE
=
Leave Procedure
Leave Procedure
1 11001001
INT = Interrupt
Type Specified
11001101
1
Type
Type 3
11001100
6-18 Instruction Set