How many memory spaces are there in ARM microprocessors? Is there a separate memory space for program and constants? Are registers mapped into a memory space as in AVR microcontrollers? What is the maximum memory size for each memory space? What is the size of addressable cells of each memory space? How is the alignment problem handled?
The ARM7TDMI does not contain any addressable "memory space". Internally it implements a number of registers used in the various operating modes, but these are not directly accessible, they are instead used by the software running on the ARM7TDMI.