Renesas M32R-FPU Manual Do Utilizador

3

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M32R-FPU Software Manual (Rev.1.01)

load/store instruction

 

 LDB  Rdest,@Rsrc

 

 LDB  Rdest,@(disp16,Rsrc)

Load to register from the contents of the memory.

(1)  Rdest = *( signed char *) Rsrc;

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

(1)  LDB sign-extends the byte data of the memory at the address specified by Rsrc and loads

       it into Rdest.

(2)  LDB sign-extends the byte data of the memory at the address specified by Rsrc combined

       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.

None

INSTRUCTIONS

3.2 Instruction description