HMS Ixxat iPC-I 320, Hardware Manual

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Architecture
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iPC-I 320 Manual, Version 2.8
0000h
F000h
FF00h
not used
Semaphores
DPRAM
60K
RAM
CODE XDATA
0000h
FFFFh
EPROM
7FFFh
RAM
F300h
F200h
Fig. 4-2: Storage assignment in loader-mode (DIP SW1-8 OFF)
0000h
E000h
F000h
FD00h
FE00h
FF00h
not used
Semaphores
DPRAM
CAN 1
CAN 2
2x 56K
RAM
CODE XDATA
0000h
FFFFh
EPROM
7FFFh
Sel. BANK 0
Sel. BANK 1
not used
FC00h
F800h
F400h
EPROM
Fig. 4-3: Storage assignment in application-mode (DIP SW1-8 ON)
4.2.4 Harvard-Mode
In Harvard-mode the programmer has the largest possible memory pool
available (see Fig. 4-4). Programs which are loaded via the loader into the code
area can contain a maximum of 63.25 kbytes code. 0.75 kbytes (from F000h to
F2FFh) of the available address space must remain unused, since in loader-
mode, because of the DPRAM displayed here as well as the semaphores, it is
not possible to write in this area.