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User’s Manual U12697EJ3V0UM
CHAPTER 3 CPU ARCHITECTURE
3.1 Memory Space
The
µ
PD784225 can access a 1 MB space. The mapping of the internal data area differs depending on LOCATION
instruction (special function registers and internal RAM). The LOCATION instruction must always be executed after
releasing reset and cannot be used more than once.
The program after releasing reset must be as follows.
RSTVCT
CSEG
AT 0
DW
RSTSTRT
INITSEG
CSEG
BASE
RSTSTRT:
LOCATION 0H; or LOCATION 0FH
MOVG
SP, #STKBGN
to
