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Memory Map

The following memory maps show which areas of the memory space are available for your program's use. If you do not use the MON51 or MON251 Target Monitor, practically the entire address space is available.

MON251 Memory Map

Address Range Description
00:0000h — 01:FFFFh Available User RAM
FE:0000h — FF:DFFFh User program code.
FF:E800h — FF:FFFFh Monitor ROM
FF:E000h — FF:E3FFh Decoded User Address Space
FF:E400h — FF:E7FF External UART

MON51 Memory Map

Address Range Description
X:0000h — X:DFFFh von Neumann RAM/ROM
Reserved for user program code — Mapped as CODE and XDATA.
C:E800h — C:FFFFh Monitor ROM
X:E000h — X:E3FFh Decoded User Address Space
X:E400h — X:E7FFh External UART
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