What would it take to ad a serial port?

Well, since I traded the one I had with the serial interface (JM!) I'd also like to have this feature. Anyone ever disassemble one to find out what it's got? 8250 I'd guess - different firmware too ? Alex http://home.neo.lrun.com/ayeckle/ ayeckley@neo.lrun.com (Play) yecklea@diebold.com (Work)