Freescale Semiconductor StarCore SC140 - Manual (Page 579)

MOVE.B
SC140 DSP Core Reference Manual A-265
Status and Conditions that Affect Instruction
Status and Conditions Changed by Instruction
Example
move.b d3,(r7+$3)
MOVE.B DR,(ea)
Writes a byte to memory. The effective memory address is obtained from an address register with an
optional offset or post-increment.
MOVE.B (SP+s15),DR
Reads a byte from memory, sign-extending it into a register. The effective memory address is obtained
from the active stack pointer (SP) with a signed 15-bit offset.
MOVE.B DR,(SP+s15)
Writes a byte to memory. The address is obtained from the stack pointer with a signed 15-bit offset.
Register Address Bit Name Description
MCTL[31:0] AM3–AM0 Address modification bits when updating R0–R7. Otherwise, the
instruction is not affected by MCTL.
SR[18] EXP Determines which stack pointer is used when the stack pointer is an
operand. Otherwise, the instruction is not affected by SR.
Register Address Bit Name Description
Ln L Clears the Ln bit in the destination registers.
Register/Memory Address Before After
MCTL $0000 0000
D3 $FF FFFF FFF8
R7 $0000 0050
$00000053 $F8