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 A - assemble                   Assembles statements
 C - compare                    Compares blocks of memory
 D - dump                       Displays contents of memory location
 E - enter                      Enters specified byte values
 F - fill                       Fills memory locations specified
 G - go                         Executes program in memory
 H - hex                        Hexadecimal arithmetic
 I - input                      Displays input from port
 L - load                       Loads a file from disk
 M - move                       Moves a specified block of memory
 N - name                       Names program files
 O - output                     Sends a byte to specified port
 P - proceed                    Executes a specified # of instructions
 Q - quit                       Quits Debug
 R - register                   Displays specified register
 S - search                     Searches memory locations
 T - trace                      Trace debug execution
 U - unassemble                 Disassembles instructions
 W - write                      Writes data to disk