Section 5.1.4 SDCDB Command Line Options in the SDCC 4.2.0 manual does not document the following command line options for SDCDB
-h/-?/--help - show command line help.
-cd=<directory> - change directory
--directory=<directory>search for source in <directory>.
-v - verbose mode
-d=<debug level=""> - debug mode. Active in debug builds only.
-contsim - continous simulation.
-q - ignored.
-m[avr][xa][z80] - set the simulator model.
-z - pass all remaining flags directly to the simulator.
-t <cpu-type> - set the cpu type.
-frequency <clock frequency=""> - passed to the simulator.</clock></cpu-type></debug></directory></directory></directory>
Some of these options duplicate the functionality of existing documented options.
Some of them are already there but not all