I think that was always explicit. Charles
-----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of Paul Gilmartin Sent: Monday, December 4, 2017 4:03 PM To: [email protected] Subject: Re: Access registers On 2017-12-04, at 16:55:53, Charles Mills wrote: > DOS/8086 had that awful "folded" 20-bit segment addressing scheme. > When the 286 appeared it seemed that the 8086 scheme was an anticipation or design fallback or compatibility bridge. Programmers shouldn't have exploited the "folding" by accessing the same location with two different segment registers. > Interesting presentation. > > -----Original Message----- > From: Paul Gilmartin > Sent: Monday, December 4, 2017 3:22 PM > > Gordon Bell?: > http://gordonbell.azurewebsites.net/computing%20versus%20corporate%20p > latforms%20011204.ppt -- gil
