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3 memory map, Memory map, 32 chapter 2 cpu – FUJITSU F2MCTM-16LX User Manual

Page 48: Is accessed, the contents of rom at ffc000, And ff7fff

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32

CHAPTER 2 CPU

2.3

Memory Map

The memory map of the MB90360 Series is shown in Figure 2.3-1 .

Memory Map

The ROM data in the high-order portion of FF-bank can be seen as an image in the higher 00-bank in order

to support the small model C compiler. Since the low-order 16 bits are identical, this part of the ROM data

can be referred without using the far specification in the pointer declaration.

For example, when 00C000

H

is accessed, the contents of ROM at FFC000

H

are read. However, since the

ROM area in the FF bank exceeds 32K bytes, its entire image cannot be mirrored in the 00 bank.

The image between FF8000

H

and FFFFFF

H

is visible in bank 00, whereas the data between FF0000

H

and

FF7FFF

H

is only visible in bank FF.

Figure 2.3-1 Memory Map

FFFFFF

H

FF0000

H

FEFFFF

H

FE0000

H

FDFFFF

H

FD0000

H

FCFFFF

H

FC0000

H

FBFFFF

H

FB0000

H

FAFFFF

H

FA0000

H

F9FFFF

H

0000EF

H

000000

H

F90000

H

F8FFFF

H

F80000

H

00FFFF

H

007FFF

H

007900

H

0078FF

H

000100

H

008000

H

MB90V340A-101/102/103/104

FFFFFF

H

FF0000

H

0000EF

H

000000

H

00FFFF

H

007FFF

H

007900

H

000CFF

H

000100

H

008000

H

MB90F362/T(S)

MB90362/T(S)

MB90F367/T(S)

MB90367/T(S)

ROM (FF bank)

ROM (FE bank)

ROM (FD bank)

ROM (FC bank)

ROM (FB bank)

ROM (FA bank)

ROM (F9 bank)

ROM (F8 bank)

ROM

(image of FF bank)

ROM

(image of FF bank)

Peripheral

RAM 30KB

RAM 3KB

ROM (FF bank)

Peripheral

Peripheral

Peripheral

Access prohibited

010000

H

FEFFFF

H

0000F0

H

0000FF

H