I traded another computer for a working CDTV last night
Congrats! Don`t know what computer you traded but it was a good move:)
What else will I need to get the most out of a CDTV with the V4?
Sooner or later you`ll need a joystick adapter like this:
https://www.ebay.co.uk/itm/Commodore-Am ... Sw32lYsYdl
(this exact one doesn`t have a CDTV mouse port so you won`t be able to use original mouse if have one.
This device would be perfect if you can ever find it: http://www.starekompy.pl/joyinter.jpg
Also, if you don`t have original CDTV keyboard you`ll need adapter like this to connect PC PS/2 keyboard:
https://www.ebay.co.uk/itm/New-PS2-PS-2 ... xy4fBTkuZK
(original CDTV keyboards are quite expensive )
You will need also external floppy drive.
However you don`t need memory expansion or SCSI controller because these are included in the Vampire.