Values for MegaEm status:
 0000h	successful
 0001h	invalid command line optie
 0002h	display options
 0003h	???
 0004h	invalid number of voices specified
 0005h	could not load enough patches to provide acceptable emulation
 0006h	to many warnings on patch loading
 0007h	??? (not used anymore)
 0008h	/CO and SCSI don't work together
 0009h	invalid music volume
 000Ah	invalid master volume
 000Bh	/SC switch is no longer valid
 0100h	??? (some error on patch loading)