4501_M Datasheet, PDF (95/212 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4501 Group
HARDWARE
INSTRUCTIONS
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TAX (Transfer data to Accumulator from register X)
Instruction
code
D9
D0
Number of Number of Flag CY
0001010010
052
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (A) ← (X)
Grouping: Register to register transfer
Description: Transfers the contents of register X to reg-
ister A.
TAY (Transfer data to Accumulator from register Y)
Instruction
code
D9
D0
Number of Number of Flag CY
0
0
0
0
0
1
1
1
1
1
0
2
1
F ₁₆
words
1
cycles
1
–
Skip condition
–
Operation: (A) ← (Y)
Grouping: Register to register transfer
Description: Transfers the contents of register Y to regis-
ter A.
TAZ (Transfer data to Accumulator from register Z)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0 0 0 1 0 1 0 0 1 1 ₂ 0 5 3 ₁₆
1
1
–
Skip condition
–
Operation:
(A1, A0) ← (Z1, Z0)
(A3, A2) ← 0
Grouping: Register to register transfer
Description: Transfers the contents of register Z to the
low-order 2 bits (A1, A0) of register A.
Note:
After this instruction is executed, “0” is
stored to the high-order 2 bits (A3, A2) of
register A.
TBA (Transfer data to register B from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
0000001110
00E
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (B) ← (A)
Grouping: Register to register transfer
Description: Transfers the contents of register A to regis-
ter B.
Rev.2.01 Feb 07, 2005
REJ09B0192-0201
1-83