64
H'00000
H'000FF
H'07FFF
8-bit memory-indirect
addresses
16-bit absolute
addresses (first half)
Mode 1
(1-Mbyte expanded modes with
on-chip ROM disabled)
H'1FFFF
H'20000
H'3FFFF
H'40000
H'5FFFF
H'60000
H'7FFFF
H'80000
H'9FFFF
H'A0000
H'BFFFF
H'C0000
H'DFFFF
H'E0000
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
External address
space
Vector area
On-chip RAM
*
External
address
space
Internal I/O
registers
8-bit absolute addresses
16-bit absolute addresses
(second half)
H'F8000
H'FDF0F
H'FDF10
H'FFF00
H'FFF0F
H'FFF10
H'FFF1B
H'FFF1C
H'FFFFF
Mode 3
(16-Mbyte expanded modes with
on-chip ROM disabled)
H'000000
H'0000FF
H'007FFF
8-bit memory-indirect
addresses
16-bit absolute
addresses (first half)
H'1FFFFF
H'200000
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
External
address
space
Vector area
On-chip RAM
*
External
address
space
Internal I/O
registers
8-bit absolute addresses
16-bit absolute addresses
(second half)
H'FF8000
H'FFDF0F
H'FFDF10
H'FFFF00
H'FFFF0F
H'FFFF10
H'FFFF1B
H'FFFF1C
H'FFFFFF
H'3FFFFF
H'400000
H'5FFFFF
H'600000
H'7FFFFF
H'800000
H'9FFFFF
H'A00000
H'BFFFFF
H'C00000
H'DFFFFF
H'E00000
Note:
*
External addresses can be accessed by disabling on-chip RAM.
Figure 3-2 H8/3021 Memory Map in Each Operating Mode (1)