Computer Hardware User's Guide

Load Integer, Interlocked LDII
13-127 Assembly Language Instructions
Syntax LDII src, dst
Operation Signal interlocked operation
src → dst
Operands src general addressing modes (G):
0 1 direct
1 0 indirect (disp = 0–255, IR0, IR1)
dst any CPU register
Opcode
31 2423 16 8 7 015
000 01 0
0 10
dst src
G
Description The src operand is loaded into the dst register. An interlocked operation is sig-
naled over XF0 and XF1. The
src and dst operands are assumed to be signed
integers. Note that only the direct and indirect modes are allowed. See Section
7.4, Interlocked Operations , on page 7-13 for a detailed description.
Cycles 1 if XF = 0 (see Section 7.4 on page 7-13)
Status Bits These condition flags are modified only if the destination register is R7–R0.
LUF Unaffected
LV Unaffected
UF 0
N 1 if a negative result is generated; 0 otherwise
Z 1 if a 0 result is generated; 0 otherwise
V 0
C Unaffected
OVM Operation is not affected by OVM bit value.Mode Bit