MB90560/565 Series
10. ROM Mirror Function Selection Module
• The ROM mirror function selection module enables ROM data in FF bank to be read by accessing 00 bank.
• ROM mirror function selection module functions
Function
• Data in FFFFFFH to FF4000H in FF bank can be read from 00FFFFH to 004000H
Mirror setting address
in 00 bank.
Interrupts
• None
EI2OS support
• Not supported by the extended intelligent I/O service (EI2OS) .
• Relationship between addresses in the ROM mirror function
FE0000H
FE8000H
FEFFFFH
ROM area in MB90568 and MB90F568
ROM area in MB90567
FF0000H
FF4000H
ROM area in MB90562/A and MB90F562/B
FF bank
FF8000H
FFFFFFH
Mirrored ROM
data area
ROM area in MB90561/A
• Block diagram
ROM mirror function selection register (ROMM)
MI
Address
Address space
FF bank
00 bank
Data
ROM
52
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