About the Casablanca: you wont have audio, sound chip is unsupported by current AHI drivers, Chip is an Analog Devices AD1845JP more info on it at
http://datasheet.octopart.com/AD1845...heet-21662.pdf
Tocatta soundcard uses Analog Device 1848KP chipset which may be compatible with the 1845JP
details at
http://datasheet.octopart.com/AD1848...eet-117009.pdf
About Casablanca floppy format:
The floppy disk is a pc one and it uses special pc format (blocks of 1 Kb with specially encoded mfm values to protect against copying on pc), but the file system is a typical amiga file system adapted to this format (changed block sizes).You can easily mount an image of this floppy disk using simple mountlist on a real amiga.
ROM/Kickstart: It uses Amiga 3000 kickstart roms plus other custom made, that heavily patches the first ones.
A workbench approach which MAY have some result:
1-Take out the harddisk from the casablanca put it in a PC, make a backup of its content (disk image).
2-Run WinUAE and add the harddisk to it
3-Format the disk using FFS
4-Instal workbench 3.1
5-Install Picasso96 or Cybergraphx Retina/Altais drivers (You should play a bit over here)
6-If casablanca is a 060 install a proper 68060.library
7-Put the harddisk back to your casablanca
8-Cross your fingers and pray... You may be able to watch something on the screen.
NOTE: Check the motherboard of the casablanca for the graphics chip it is using, and change the driver accordingly (If the driver exists). I dont know which chip it is using, i am assuming it is some NCR Altais variant!