5.81. Inclusive Logical OR


Addr
Mode  Mnemonic          Format/Opcode
                           8      4      4
                        ----------------------
R     ORR    RA,RB      |  E1  |  RA  |  RB  |
                        ----------------------
                          4   2   2     8          12<=BR<=15
                        ----------------------
B     ORB    BR,DSPL    | 3 | 0 | BR' | DSPL |     BR'=BR-12
                        ----------------------     RA=R2
                          4   2   2     4   4      12<=BR<=15
                        ------------------------
BX    ORBX   BR,RX      | 4 | 0 | BR' | F | RX |   BR'=BR-12
                        ------------------------   RA=R2
                           8      4      4           16
D     OR     RA,ADDR    --------------------------------------
DX    OR     RA,ADDR,RX |  EO  |  RA  |  RX  |  |    ADDR    |
                        --------------------------------------
                           8      4      4           16
                        --------------------------------------
IM    ORIM   RA,DATA    |  4A  |  RA  |  8   |  |    DATA    |
                        --------------------------------------

Description. The Derived Operand, DO, is bit-by-bit inclusively ORed with the contents of RA. The result is stored in register RA. The condition status, CS, is set based on the result in register RA.

Register Transfer Description.

(RA) <-- (RA) v DO;
(CS) <-- 0010  if (RA) = 0;
(CS) <-- 0001  if (RA) < 0;
(CS) <-- 0100  if (RA) >= 0;

Registers Affected. RA, CS