NEC UPD703116 User Manual page 65

(c) Internal ROM area relocation function
If set in single-chip mode 1, the internal ROM area is located beginning from address 100000H, so
booting from external memory becomes possible.
Therefore, in order to resume correct operation after reset, provide a handler address to the reset routine
in address 0 of the external memory.
200000H
1FFFFFH
100000H
0FFFFFH
000000H
Note See 4.3 Memory Block Function.
(2) Internal RAM area
12 KB of memory, addresses FFFC000H to FFFEFFFH, is reserved for the internal RAM area.
The 12 KB area of 3FFC000H to 3FFEFFFH can be seen as an image of FFFC000H to FFFEFFFH.
In the V850E/IA1, 10 KB of memory, addresses FFFC000H to FFFE7FFH, is provided as physical internal
RAM.
Access to the area of addresses FFFE800H to FFFEFFFH is prohibited.
CHAPTER 3 CPU FUNCTION
Figure 3-5. Internal ROM Area in Single-Chip Mode 1
Internal ROM area
External memory area
FFFEFFFH
Access prohibited
FFFE800H
FFFE7FFH
Internal RAM area (10 KB)
FFFC000H
User's Manual U14492EJ5V0UD
Note
Block 0
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