Renesas M32R-FPU Manual Do Utilizador

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M32R-FPU Software Manual (Rev.1.01)

load/store instruction

 

 LDUH  Rdest,@Rsrc

 

 LDUH  Rdest,@(disp16,Rsrc)

Load to register from the contents of the memory.

(1)  Rdest = *( unsigned short *) Rsrc;

(2)  Rdest = *( unsigned short *) ( Rsrc + ( signed short ) disp16 );

(1)   LDUH zero-extends the halfword data from the memory at the address specified by Rsrc

        and loads it into Rdest.

(2)   LDUH zero-extends the halfword data in memory at the address specified by Rsrc com-

bined

        with the 16-bit displacement, and loads it into Rdest.

        The displacement value is sign-extended to 32 bits before the address calculation.

        The condition bit (C) is unchanged.

Address exception (AE)

INSTRUCTIONS

3.2 Instruction description