Renesas SuperH SH-4A - Page 314

Rev. 1.50, 10/04, page 294 of 448
Operation:
OR(long m, long n) /* OR Rm,Rn */
{
R[n] |= R[m];
PC += 2;
}
ORI(long i) /* OR #imm,R0 */
{
R[0] |= (0x000000FF & (long)i);
PC += 2;
}
ORM(long i) /* OR.B #imm,@(R0,GBR) */
{
long temp;
temp = (long)Read_Byte(GBR+R[0]);
temp |= (0x000000FF & (long)i);
Write_Byte(GBR+R[0],temp);
PC += 2;
}
Example:
OR R0,R1 ;Before execution R0 = H'AAAA5555, R1 = H'55550000
;After execution R1 = H'FFFF5555
OR #H'F0,R0 ;Before execution R0 = H'00000008
;After execution R0 = H'000000F8
OR.B #H'50,@(R0,GBR) ;Before execution (R0,GBR) = H'A5
;After execution (R0,GBR) = H'F5