WHDLoad is not an emulator.
With this terrific tool you can install EVERY possible Amiga game (and even demos) on your hard disk, even if the disks are NDOS (No DOS). So no more disk swapping and of course every different game install has some benefits, for example on some games you can quit back to workbench (but in normal there is no such a key option), or on some adventure games you can save directly to the hard disk (but in normal circumstances you have to create a save game disk) etc.
Just visit the website
www.whdload.de for more information. It worth every euro, believe me.
I used this on my A1200 with a Blizzard MK4 030/50MHz with no problems at all and now I have a Blizzard 060/50MHz and is working like a charm.
There are also tooltypes that you can type in the icon info to suit your needs.
Just read the documentation on the site and you will love this tool. :-D