IBM 5150 Hardware Reference Manual page 286

REP
=
Repeat
11111001z1
,...-., MOVS = Move String
1 1 0 1 0 0 1 0 w
CMPS
=
Compare String
1
101 0011W
SCAS
=
Scan String
/1010111W
LODS
=
Load String
11010110w
STOS
=
Store String
11010101W
CALL
=
Call
Direct within segment
/ 1 1 1 0 1 0 0 0
Indirect within segment
11111111
Direct intersegment
/ 1 0 0 1 1 0 1 0
Indirect intersegment
11 1 1 1 1 1 1
JMP
=
Unconditional Jump
~ Direct within segment
11 1 1 0 1 0 0 1
Direct within segment-short
11 1 1 0 1 0 1 1
STRING MANIPULATION
CONTROL TRANSFER
disp-Iow disp-high
mod 0 1 0
rIm
I
offset-low offset-high
seg-Iow seg-high
mod 0 1 1
rIm
1 disp-Iow
disp-high
I
disp
I
B-ll