Commodore itself made an XT (8088), AT (286) and 386SX boards. I believe Vortex (is that their name) made a board powered by a 486SLC chip (GoldenGate). Also, several upgrades for the different boards were made.
These boards are in fact complete PC's on a single card, without video/keyboard. By running software on your Amiga you emulate a video screen, keyboard, disk and floppy on the Amiga side.
Commodore wrote software for this called JANUS, which is known to cause nauseous reactions with some users. There is alternative software on Aminet for it, such as
http://aminet.net/package/misc/emu/ATUtilities.
Nifty stuff can be done. For example, by adding a NE2000 compatible network card on the "PC side" there is software allowing you to use it as a SANA network device on the Amiga side.
The fast bridge boards go for quite high prices these days but the A2088 boards go for first cheap. I've seen them passed for the price of a sandwich.
Depending on what you want to do maybe the A2088 board will do just fine. It runs DOS, you stare at it. Try some TurboPascal or whatever :roflmao:
