Stereo System User Manual

A - 212 DSP96002 USER’S MANUAL MOTOROLA
LEA Load Effective Address LEA
Operation:
ea → D
Rn+xxxx → D
Assembler Syntax:
LEA ea,D
LEA (Rn+displacement),D
Description:
The address calculation specified is executed and the resulting effective address is stored in the destina-
tion register. The source address registers are not affected. Post-update and Long Displacement address
register indirect addressing modes may be used. Note that if D is SSH, the SP will be preincremented by
one.
CAUTION
See restrictions in Section A.10.6 concerning Rn, Mn, and Nn registers as a
destination.
CCR Condition Codes:
For destination operand SR:
C - Set according to bit 0 of the source operand.
V - Set according to bit 1 of the source operand.
Z - Set according to bit 2 of the source operand.
N - Set according to bit 3 of the source operand.
I - Set according to bit 4 of the source operand.
LR - Set according to bit 5 of the source operand.
–
R - Set according to bit 6 of the source operand.
A - Set according to bit 7 of the source operand.
For destination operands other than SR:
C - Not affected.
V - Not affected.
Z - Not affected.
N - Not affected.
I - Not affected.
LR - Not affected.
–
R - Not affected.
A - Not affected.