gottloeb@trwrba.UUCP (Jeff R. Gottloeb) (08/28/84)
[death to the line eater] Be careful, a local dealer told me that the new IBM AT can not use the existing peripheral boards for the PC's and XT's in the AT.
cem@intelca.UUCP (Chuck McManis) (08/28/84)
In reference to the incompatibility of using PC boards with the AT, this is sorta of true and sort of false. The PC AT has an additional card edge connector in "front" of the PC compatible edge connector. This extra connector has the extended address lines and some other useful signals that are present on the 80286, the problem arises from the fact that some manufacturers, in order to get an extra couple of square inchs of board space made there boards with an overhang. In military jargon this "conflicts" with the second connector. Attempt at picture follows : Bad Good | | | | | | | | | +-+ | ------------------------+ | +---------------------+ +-------+ +-------+ So if you have a "good" board it will work. -- -- Chuck - - - D I S C L A I M E R - - - {ihnp4,fortune}!dual\ All opinions expressed herein are my {proper,idi}-> !intelca!cem own and not those of my employer, my {ucbvax,hao}!hplabs/ friends, or my avocado plant. :-} ARPAnet : "hplabs!intelca!cem"@Berkeley
gnome@olivee.UUCP (08/28/84)
It's true. The AT has another connector sitting side-by-side with the other 62 pin connector. Any card with an overhand automatically won't fit. Electrically, it's anyone's guess... Gary