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