4513_03 Datasheet, PDF (84/210 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCOMPUTER

HARDWARE
MACHINE INSTRUCTIONS
Skip condition
Datailed description
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Continuous
description
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(Y) = 0
(Y) = 15
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(Y) = 15
(Y) = 0
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– Transfers the contents of register B to register A.
– Transfers the contents of register A to register B.
– Transfers the contents of register Y to register A.
– Transfers the contents of register A to register Y.
– Transfers the contents of registers A and B to register E.
– Transfers the contents of register E to registers A and B.
– Transfers the contents of register A to register D.
– Transfers the contents of register D to register A.
– Transfers the contents of register Z to register A.
– Transfers the contents of register X to register A.
– Transfers the contents of stack pointer (SP) to register A.
– Loads the value x in the immediate field to register X, and the value y in the immediate field to register Y.
When the LXY instructions are continuously coded and executed, only the first LXY instruction is executed
and other LXY instructions coded continuously are skipped.
– Loads the value z in the immediate field to register Z.
– Adds 1 to the contents of register Y. As a result of addition, when the contents of register Y is 0, the next in-
struction is skipped.
– Subtracts 1 from the contents of register Y. As a result of subtraction, when the contents of register Y is 15,
the next instruction is skipped.
– After transferring the contents of M(DP) to register A, an exclusive OR operation is performed between reg-
ister X and the value j in the immediate field, and stores the result in register X.
– After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is per-
formed between register X and the value j in the immediate field, and stores the result in register X.
– After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is per-
formed between register X and the value j in the immediate field, and stores the result in register X.
Subtracts 1 from the contents of register Y. As a result of subtraction, when the contents of register Y is 15,
the next instruction is skipped.
– After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is per-
formed between register X and the value j in the immediate field, and stores the result in register X. Adds 1
to the contents of register Y. As a result of addition, when the contents of register Y is 0, the next instruction
is skipped.
– After transferring the contents of register A to M(DP), an exclusive OR operation is performed between reg-
ister X and the value j in the immediate field, and stores the result in register X.
4513/4514 Group User’s Manual
1-71