4554 Datasheet, PDF (100/138 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4554 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TASP (Transfer data to Accumulator from Stack Pointer)
Instruction D9
D0
code
0001010000
050
2
16
Number of
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(A2–A0) ← (SP2–SP0)
(A3) ← 0
Grouping: Register to register transfer
Description: Transfers the contents of stack pointer (SP)
to the low-order 3 bits (A2–A0) of register A.
Note:
After this instruction is executed, “0” is
stored to the bit 3 (A3) of register A.
TAV1 (Transfer data to Accumulator from register V1)
Instruction D9
D0
code
0001010100
05
2
4
16
Number of
words
1
Number of Flag CY
cycles
1
–
Skip condition
–
Operation: (A) ← (V1)
Grouping: Interrupt operation
Description: Transfers the contents of interrupt control
register V1 to register A.
TAV2 (Transfer data to Accumulator from register V2)
Instruction D9
D0
code
0001010101
05
2
5
16
Number of
words
1
Number of Flag CY
cycles
1
–
Skip condition
–
Operation: (A) ← (V2)
Grouping: Interrupt operation
Description: Transfers the contents of interrupt control
register V2 to register A.
TAW1 (Transfer data to Accumulator from register W1)
Instruction D9
D0
code
1001001011
24
2
B
16
Number of
words
1
Number of Flag CY
cycles
1
–
Skip condition
–
Operation: (A) ← (W1)
Grouping: Timer operation
Description: Transfers the contents of timer control reg-
ister W1 to register A.
Rev.3.00 Aug 06, 2004 page 100 of 136
REJ03B0043-0300Z