Memory Space - Fujitsu FR60 Hardware Manual

CHAPTER 3 CPU AND CONTROL UNITS
3.1

Memory Space

The FR family has a logical address space of 4 G bytes (2
accesses linearly.
■ Direct Addressing Area
The areas in the address space listed below are used for input-output.
These areas are called the direct addressing area. The address of an operand can be directly
specified in an instruction.
The size of the direct addressing area varies according to the size of data to be accessed:
• Byte data access:
• Halfword data access: 000
• Word data access:
42
000 to 0FF
H H
to 1FF
H H
000 to 3FF
H H
32
addresses), which the CPU