Consider checking out the mister project. The Mister is one FPGA board that lets you emulate many old computers, like the C64, Atari ST, Amiga 500, Macintosh plus, 486 based systems, even Japanese computers like the Sharp x68k, PC-88, MSX, etc. It's a great piece of kit, with some level of floppy support and more affordable (although you have to bring your own fancy case!).