Computer Hardware User's Guide

Store Integer
STI
13-219
Assembly Language Instructions
Syntax STI
src, dst
Operation
src
dst
Operands
src
register (R
n
, 0
n
27)
dst
general addressing modes (G):
0 1 direct
1 0 indirect (disp = 0–255, IR0, IR1)
Opcode
31 24 23 16 8 7 015
000 10 1
0 01
src
G
dst
Description The
src
register is loaded into the
dst
memory location. The
src
and
dst
oper-
ands are assumed to be signed integers.
Cycles 1
Status Bits LUF Unaffected
LV Unaffected
UF Unaffected
N Unaffected
Z Unaffected
V Unaffected
C Unaffected
OVM Operation is not affected by OVM bit value.
Example STI R4,@982Bh
Before Instruction After Instruction
R4 00 0004 2BD7 R4 00 0004 2BD7
DP 080 DP 080
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
80982Bh 0E5FC 80982Bh 42BD7
58,876
273,367
273,367
273,367
Mode Bit