These are the Basilisk and SheepShaver prefs:

• –disk STRING device/file name of Mac volume [default path is to SheepShaver folder]
• –floppy STRING device/file name of Mac floppy drive [default=none]
• –cdrom STRING device/file names of Mac CD-ROM drive [default path is to SheepShaver folder]
• –extfs STRING root path of ExtFS [default path is to SheepShaver folder]
• –scsi0 STRING SCSI target for Mac SCSI ID 0 [default=none]
• –scsi1 STRING SCSI target for Mac SCSI ID 1 [default=none]
• –scsi2 STRING SCSI target for Mac SCSI ID 2 [default=none]
• –scsi3 STRING SCSI target for Mac SCSI ID 3 [default=none]
• –scsi4 STRING SCSI target for Mac SCSI ID 4 [default=none]
• –scsi5 STRING SCSI target for Mac SCSI ID 5 [default=none]
• –scsi6 STRING SCSI target for Mac SCSI ID 6 [default=none]
• –screen STRING video mode [default=win/1024/768]
• –windowmodes NUMBER bitmap of allowed window video modes [default=0]
• –screenmodes NUMBER bitmap of allowed fullscreen video modes [default=0]
• –seriala STRING device name of Mac serial port A [default=/dev/ttyS0]
• –serialb STRING device name of Mac serial port B [default=/dev/ttyS1]
• –rom STRING path of ROM file [default path is to SheepShaver folder, default name is Mac OS ROM]
• –bootdrive NUMBER boot drive number [default=0, meaning the first disk entry in the list of disks]
• –bootdriver NUMBER boot driver number [default=0, meaning a disk entry, to boot from cd, use -62 ]
• –ramsize NUMBER size of Mac RAM in bytes [134217728 is 128 Mb]
• –frameskip NUMBER number of frames to skip in refreshed video modes [default=1]
• –gfxaccel BOOL turn on QuickDraw acceleration [default=true]
• –nocdrom BOOL don't install CD-ROM driver [default=false]
• –nonet BOOL don't use Ethernet [default=false]
• –nosound BOOL don't enable sound output [default=false]
• –nogui BOOL disable GUI [default=false]
• –noclipconversion BOOL don't convert clipboard contents [default=false]
• –ignoresegv BOOL ignore illegal memory accesses [default=true]
• –ignoreillegal BOOL ignore illegal instructions [default=true]
• –jit BOOL enable JIT compiler [default=true]
• –jit68k BOOL enable 68k DR emulator [default=false]
• –keyboardtype NUMBER hardware keyboard type [default=5]
• –hardcursor BOOL hardware mouse cursor [default=false]
• –hotkey NUMBER hotkey modifier [default=0]
• –scale_nearest BOOL nearest neighbor scaling [default=false]
• –scale_integer BOOL integer scaling [default=false]
• –cpuclock NUMBER CPU clock [MHz] of system info [default=0]
• –yearofs NUMBER year offset [default=0]
• –dayofs NUMBER day offset [default=0]
• –mag_rate NUMBER rate of magnification [default=0]
• –gammaramp STRING gamma ramp (on, off or fullscreen) [default=none]
• –swap_opt_cmd BOOL swap option and command key [default=true]
• –host_domain STRING handle DNS requests for this domain on the host (slirp only) [default=none]
• –redir STRING port forwarding for slirp [default=none]
• –title STRING window title [default=none]
• –sound_buffer NUMBER sound buffer length [default=0]
• –name_encoding NUMBER file name encoding [default=0]
• –ether STRING device name of Mac ethernet adapter [default=slirp]
• –etherconfig STRING path of network config script [default=none]
• –keycodes BOOL use keycodes rather than keysyms to decode keyboard [default=false]
• –keycodefile STRING path of keycode translation file [default=none]
• –mousewheelmode NUMBER mouse wheel support mode (0=page up/down, 1=cursor up/down) [default=1]
• –mousewheellines NUMBER number of lines to scroll in mouse wheel mode 1 [default=3]
• –dsp STRING audio output (dsp) device name [default=/dev/dsp]
• –mixer STRING audio mixer device name [default=/dev/mixer]
• –idlewait BOOL sleep when idle [default=true]
• –sdlrender STRING SDL_Renderer driver (“auto”, “software” (may be faster), etc.) [default=none]