> I believe that placing the DMA buffer above 16 MB is always wrong in a system with ISA slots.<p>That may well be true.<p>the conjunction of (a) ISA slots (needing busmastering! not just legacy io pounding) (b) more than 16MB ram and (c) running DOS ... I don't think that would've been happening often on real hardware anyway.<p>not when anyone cared, perhaps later as retrocomputing enthusiasts got hold of things.<p>> it’s entirely plausible that it wouldn’t have been encountered when 386MAX was popular<p>masterful understatement