Comparison; Arithmetic - IBM 5150 Technical Reference

Comparison
FCOM
=
Compare
Integer/Real Memory to ST(O)
Escape
MF
0
mod 0 1 0 rim disp-Iow
disp-high
~
ST(i) to ST(O)
Escape
0
0 0 1 1 0 1
o
ST(i)
FCOMP ==
Compare and Pop
Integer/Real Memory to ST(O)
I.
Escape MF 0
mod 0 1 1 rim disp-Iow
disp-high
ST(i) to ST(O)
Escape 0 0 0 1 1 0 1 1 ST(i)
FCOMPP
=
Compare ST(1) to ST(O) and Pop twice
Escape 1 1 0 1 1 1 0 1 1 0 0 1
FTST == Test ST(O)
Escape 0 0 1
1
1 1001001
FXAM ==
Examine ST(O)
Escape 0 0 1
1
1
00101
Arithmetic
FADD == Addition
Integer/Real Memory with ST(O)
Escape MF 0
mod 0 0 0 rim
disp-Iow disp-high
ST(i) to ST(O)
Escape d P 0 1 1 0 0 0 ST(i)
FSUB
== Subtraction
Integer/Real Memory with ST(O)
Escape MF 0
mod 1 0 R rim
disp-Iow disp-high
ST(i) to ST(O)
Escape d P 0 1 1 1 0 R rim
Instruction Set 6-19