HMS Ixxat iPC-I 320, Hardware Manual

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Architecture
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iPC-I 320 Manual, Version 2.8
0000h
E000h
F000h
FF00h
not used
Semaphores
DPRAM
CAN 1
CAN 2
56K
CODE XDATA
0000h
FFFFh
60K
not used
FC00h
F800h
F400h
F000h
F300h
3K
FF00h
FFFFh
Fig. 4-4: Storage assignment in Harvard-mode
4.2.5 Von-Neumann Mode
The Von-Neumann mode provides applications with the smallest usable storage
area (see Fig. 4-5). The advantage of this mode is that debuggers such as Keil
TS51 can also be implemented, as the whole usable code area can be modified
by the software itself.
In the area of the CAN controller, of the DPRAM and of the semaphore register,
the storage is decoded as Harvard-storage when accessed.
0000h
E000h
F000h
FF00h
not used
Semaphores
DPRAM
CAN 1
CAN 2
56K
CODE XDATA
0000h
FFFFh
not used
FC00h
F800h
F400h
F000h
F300h
3K
FF00h
FFFFh
4K
E000h
Fig. 4-5: Storage assignment in Von-Neumann mode