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3-111 M32R-FPU Software Manual (Rev.1.01)

STBSTB

load/store instruction

Store byte

[Mnemonic]

(1) STB Rsrc1,@Rsrc2

(2) STB Rsrc1,@(disp16,Rsrc2)

[Function]

Store

(1) * ( char *) Rsrc2 = Rsrc1;

(2) * ( char *) ( Rsrc2 + ( signed short ) disp16 ) = Rsrc1;

[Description]

(1) STB stores the least significant byte of Rsrc1 in the memory at the address specified by

Rsrc2.

(2) STB stores the least significant byte of Rsrc1 in the memory at the address specified by

Rsrc

combined with the 16-bit displacement.

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

The condition bit (C) is unchanged.

[EIT occurrence]

None

[Encoding]

src11010

src10010

0000 src2

disp16

STB Rsrc1,@Rsrc2

STB Rsrc1,@(disp16,Rsrc2)

INSTRUCTIONS

3.2 Instruction description

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 193 194

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Renesas M32R-FPU Manuale Utente Pagina 149