4518 Datasheet, PDF (118/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TAY (Transfer data to Accumulator from register Y)
Instruction
code
D9
D0
Number of Number of Flag CY
0000011111
01F
words
cycles
2
16
1
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.
TDA (Transfer data to register D from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
0000101001
029
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (DR2–DR0) ← (A2–A0)
Grouping: Register to register transfer
Description: Transfers the contents of the low-order 3
bits (A2–A0) of register A to register D.
Rev.3.01 2005.06.15 page 118 of 157
REJ03B0008-0301