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I Image Access to Internal ROM
2
In the F
image in the top 00 bank. This function is called ROM mirroring and enables effective use of a small C
compiler.
In the F
addresses of the 00 bank, so the table in ROM can be referenced without specifying far with a pointer.
For example, if "00C000
ROM area in the FF bank exceeds 48 KB and all areas cannot be seen as images in the 00 bank. Therefore,
ROM data from "FF4000
data table should be stored in the area from "FF4000
Note:
To disable the ROM mirroring function (ROMM: MI = 0), see 18.1 "Overview of ROM
Mirroring Function Select Module".
MC-16LX family, with the internal ROM in operation, ROM data in the FF bank can be seen as an
2
MC-16LX family, the lower 16-bit addresses of the FF bank are the same as the lower 16-bit
" is accessed, data in ROM at "FFC000
H
" to "FFFFFF
H
" is see as an image from "004000
H
" to "FFFFF
H
H
CHAPTER 3 CPU
" is actually accessed. However, the
H
" to "00FFFF
H
H
".
" so the ROM
23
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