4583 Datasheet, PDF (121/153 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4583 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
XAMI j (eXchange Accumulator and Memory data and Increment register Y and skip)
Instruction D9
D0
Number of Number of Flag CY
code
words
cycles
101110j j j j
2 Ej
2
16
1
1
–
Skip condition
(Y) = 0
Operation:
(A) ←→ (M(DP))
(X) ← (X)EXOR(j)
j = 0 to 15
(Y) ← (Y) + 1
Grouping: RAM to register transfer
Description: After exchanging the contents of M(DP)
with the contents of register A, an exclusive
OR operation is performed between regis-
ter 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 re-
sult of addition, when the contents of
register Y is 0, the next instruction is
skipped. when the contents of register Y is
not 0, the next instruction is executed.
Rev.3.00 Aug 06, 2004 page 121 of 151
REJ03B0009-0300Z