Freescale Semiconductor StarCore SC140 - Manual (Page 629)

MOVEU.W
SC140 DSP Core Reference Manual A-315
MOVEU.W
Move Unsigned Word from
MOVEU.W
Memory to a Register (AGU)
Description
These operations move an unsigned word from memory to the LP of a register and zero-extend it. The
address of the access must be word-aligned.
Operation Assembler Syntax
(aa)
→ C4
MOVEU.W (a16),C4 {0
≤ a16 < 2 16 }
(aa)
→ DR
MOVEU.W (a32),DR {0
≤ a32 < 2 32 }
(Rn + s15)
→ DR
MOVEU.W (Rn+s15),DR {–2 14 ≤ s15 < 2 14 }
(EA)
→ DR
MOVEU.W (EA),DR
(SP + s15)
→ C4
MOVEU.W (SP+s15),C4 {–2 14
≤ s15 < 2
14 }
MOVEU.W (a16),C4
Reads an unsigned word from an 16-bit unsigned absolute address, places the data in the LP of a general
register (C4), and zero-extends the upper bits.
MOVEU.W (a32),DR
Reads an unsigned word from an absolute 32-bit address, places the data in the LP of a data or address
register (DR), and zero-extends the upper bits.
MOVEU.W (Rn+s15),DR
Reads an unsigned word from a memory address pointed to by an address register (Rn) with a signed 15-bit
offset, places the data in the LP of a data or address register (DR), and zero-extends the upper bits.
MOVEU.W (EA),DR
Reads an unsigned word from a memory address pointed to by an address register with an optional offset or
post-increment, places the data in the LP of a data or address register (DR), and zero-extends the upper
bits.
MOVEU.W (SP+s15),C4
Reads an unsigned word from a memory address pointed to by the active stack pointer (SP) with a signed
15-bit offset, places the data in the LP of a general register (C4), and zero-extends the upper bits.
ZERO EXTENSION
39 0 16
0 16 31
ZERO EXTENSION R/C4
D