Fujitsu MB90460 Series, Hardware Manual, Page: 62 / 739

43
CHAPTER 3 CPU
Figure 3.7-3 Example of AL-AH Transfer in the Accumulator (A) (8-bit Immediate Value, Zero Extension)
Figure 3.7-4 Example of AL-AH Transfer in the Accumulator (A) (8-bit Immediate Value, Sign Extension)
Figure 3.7-5 Example of 32-bit Data Transfer to the Accumulator (A) (Register Indirect)
A before execution
A after execution
XXXX
H
2456
H
2456
H
0088
H
DTB B5
H
77
H
88
H
MSB LSB
B53000
H
AH AL
Memory space
MOV A,3000H (An instruction that zero-extends the contents at address 3000
H
and
stores the result in the AL register)
A before execution
A after execution
XXXX
H
2456
H
2456
H
7788
H
DTB B5
H
77
H
88
H
MSB LSB
B53000
H
AH AL
Memory space
MOVX A,3000H (An instruction that stores the contents at address 3000
H
in the AL register)
A before execution
A after execution
XXXX
H
XXXX
H
8F74
H
2B52
H
DTB A6
H
8F
H
74
H
2B
H
52
H
15
H
38
H
A61540
H
A6153E
H
RW1
+6
AH AL
MSB LSB
Memory space
MOVL A,@RW1+6
(Instruction that perform a long-word-length read using the result
of the RW1 co an 8-bit offset as the address and stores
the read value in the A register)