I tend to agree with your position Jim. Posturing or it's appearance is a bad place to be. As an aside if you've written any code for 765 then it's easy to understand how image disk works down deep. If you haven't then reading the code is likely only an exercise. There has been enough conversation about the chip and it's heirs to make it clear that the hardware is sometimes more than meets the eye. The ramification of hardware choices in PC implementations be it XT TTL loaded board or chip version of it is compromized and it does affect programming. When you add that lovely 8237 DMA it just gets more fun. My hats off to anyone programming PC hardware and getting good code that runs on all the muck and mire flavors of MS operating systems. Allison