5.43. Load from Lower Byte


Addr
Mode  Mnemonic          Format/Opcode
                           8      4      4            16
D     LLB  RA,ADDR      --------------------------------------
DX    LLB  RA,ADDR,RX   |  8C  |  RA  |  RX  |  |    ADDR    |
                        --------------------------------------
                           8      4      4            16
I     LLBI RA,ADDR      --------------------------------------
IX    LLBI RA,ADDR,RX   |  8E  |  RA  |  RX  |  |    ADDR    |
                        --------------------------------------

Description. The LSH (lower byte) of the Derived Operand, DO, is loaded into the LSH (lower byte) of register RA. The MSH (upper byte) of RA is unaffected. The condition status, CS, is set based on the result in RA.

Register Transfer Description.

(RA)8-15 <-- DO8-15;
(CS) <-- 0010  if (RA) = 0;
(CS) <-- 0001  if (RA) < 0;
(CS) <-- 0100  if (RA) >= 0;

Registers Affected. RA, CS