Are you tired of looking through manual pages for register descriptions? PEmicro has the ultimate solution for this problem.
FOR PEmicro's SIMULATORS, DEBUGGERS and EVMs:
The R command lets you look at and modify the registers and the register fields in both a symbolic and numeric format. When you type the R command, it searches the directory which contains the main program for any files with the .REG extension (REGister files). Each of these files describes a block of registers. The block name (1st line of .reg) file is displayed in a pick window. If you select a register block, each of the registers in that block has it's address, name, and description listed in a pick window. If you select a register, it's current value is read from the device and displayed both symbolically and numerically. You may then edit the register contents.
If you modified the displayed register contents and exit the register display, you are asked if you want to write the new value back to the device register. You should be careful of any "WRITE ONLY" registers, since they can not be read but will be written.
The .REG files for most Motorola modules are available at nominal cost from PEmicro. These files are in ASCII and it is possible to create your own files for devices not supported by PEmicro. Support tools (REGKIT) are avilable at a nominal cost to assist you in generating your custom .REG files.