Addressing – FUJITSU MB91460 SERIES FR60 User Manual
Page 127

111
Chapter 4 CPU Architecture
9.Addressing
9. Addressing
Address space is 32-bit linear.
■
Map
Figure 9-1 Map
FR60’s logical address space is 4GB (2
32
addresses), CPU accesses the data linearly.
■
Direct Addressing Area
The following areas are used for I/O.
These spaces are referred to as direct addressing area where you can specify direct operand address by the
instruction.
These direct areas vary by data size to be accessed.
•
Byte access
: 0 - 0FF
H
•
Half-word access : 0 - 1FF
H
•
Word access
: 0 - 3FF
H
0000 0000
H
0000 0100
H
0000 0200
H
0000 0400
H
Direct addressing area
000F FC00
H
000F FFFF
H
FFFF FFFF
H
Byte data
Half-word data
Word data
Vector table
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