Processor Control - IBM 5150 Technical Reference

Processor Control
FINIT
=
Initialize NDP
Escape 0 1 1
I
1 1 1 0 0 0 1 1
FENI
=
Enable Interrupts
Escape 0 1 1
I
1 1 0 0 0 0 0
FDISI
= Disable Interrupts
Escape O. 1 1
I
1 1
o
0 0 0 1
FLDCW
=
Load Control Word
Escape
0 0 1
I
mod 1
0
1 rim disp-Iow
disp-high
FSTCW
=
Store Control Word
Escape 0 0
1
I
mod
1 1 1 rim
disp-Iow
disp-high
FSTSW
=
Store Status Word
Escape 1
0 1
I
mod
1 1 rim disp-Iow
disp-high
FCLEX
=
Clear Exceptions
Escape 0 1 1
I
1 1
0 0 0
1
0
FSTENV
=
Store Environment
Escape 0 0 1 mod 1 1
0
rim disp-Iow
disp-high
6-22 Instruction Set