FUJITSU F2MCTM-16LX - Manual (Page 542)

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CHAPTER 23 ROM MIRRORING MODULE
23.1 Overview of ROM Mirroring Function Select Module
The ROM mirroring function select module provides a setting so that ROM data in the
FF bank can be read by access to the 00 bank.
■ Block Diagram of ROM Mirroring Function Select Module
Figure 23.1-1 Block Diagram of ROM Mirroring Function Select Module
■ Access to FF Bank by ROM Mirroring Function
Figure 23.1-2 shows the location in memory when ROM mirroring function allows access to the 00 bank to
read ROM data in the FF bank.
Figure 23.1-2 Access to FF Bank by ROM Mirroring Function
ROM
MI
ROM mirror function select register (ROMM)
Re-
served
Re-
served
Re-
served
Re-
served
Re-
served
Re-
served
Re-
served
Address area
00 bank FF bank
Address
Data
Inter
nal data b
u
s
FFFFFF H
F F 0 0 0 0 H
F F 8 0 0 0 H
FEFFFF H
00FFFF H
0 0 8 0 0 0 H
MB90F362/T(S),MB90362/T(S)
MB90F367/T(S),MB90367/T(S)
00 bank
ROM mirror area
FF bank
Area for ROM mirror