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TBA
(B) ⇒ A
Operation:
Description:
Moves the content of accumulator B to accumulator A. The former con-
tent of A is lost; the content of B is not affected. Unlike the general trans-
fer instruction TFR B,A, which does not affect condition codes, the TBA
instruction affects N, Z, and V for compatibility with M68HC11.
Condition Codes and Boolean Formulas:
S
–
N:
Z:
V:
Addressing Modes, Machine Code, and Execution Times:
Source Form
TBA
CPU12
REFERENCE MANUAL
Transfer from Accumulator B
to Accumulator A
X
H
I
N
Z
∆
∆
–
–
–
Set if MSB of result is set; cleared otherwise.
Set if result is $00; cleared otherwise.
0; Cleared.
Address Mode
INH
INSTRUCTION GLOSSARY
V
C
0
–
Object Code
18 0F
TBA
Cycles
Access Detail
2
OO
MOTOROLA
6-199
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