4524 Datasheet, PDF (121/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
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.
TEAB (Transfer data to register E from Accumulator and register B)
Instruction
code
D9
D0
Number of
0000011010
01A
2
16
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(E7–E4) ← (B)
(E3–E0) ← (A)
Grouping: Register to register transfer
Description: Transfers the contents of register B to the
high-order 4 bits (E7–E4) of register E, and
the contents of register A to the low-order 4
bits (E3–E0) of register E.
Rev.2.00 Jul 27, 2004 page 121 of 159
REJ03B0091-0200Z