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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
0000 src2
disp16
STB Rsrc1,@Rsrc2
STB Rsrc1,@(disp16,Rsrc2)
INSTRUCTIONS
3.2 Instruction description