MB90560 Datasheet, PDF (498/581 Pages) Fujitsu Component Limited. – 16-BIT MICROCONTROLLER

18.1 Overview of the ROM Mirroring Function Selection Module
The ROM mirroring function selection module can access bank FF located in ROM from
bank 00 by setting the register.
s Registers
bit
15 14 13 12 11 10 9 8
ROMM address :00006F_H
-
-
-
-
-
-
- MI
W
Initial value
------- 1 B
s Block Diagram
ROM mirroring function selection
Address area
Bank FF
Bank 00
ROM
s Register Details
Figure 18.1-1 Block diagram
q ROMM (ROM mirroring function selection register)
bit
15 14 13 12 11 10 9 8
ROMM address :00006F_H
-
-
-
-
-
-
- MI
W
Initial value
------- 1 B
<Check>
Do not access this register while the system is active in an address from “004000H” to
“00FFFFH”.
[bit 8]: MI
When “1” has been written to this bit, the ROM data in bank FF can be read from bank 00.
When “0” has been written to this bit, the function is disabled in bank 00. This bit is a write-
only bit.
474 CHAPTER 18 ROM MIRRORING FUNCTION SELECTION MODULE
MB90560 series