There were syntax changes going from CP/M to [MS|PC]-DOS, and somewhere along the way PIP was lost.
The editor also changed fr Mr. Ed to Mr. Edlin. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Steve Thompson [[email protected]] Sent: Monday, August 14, 2023 8:51 PM To: [email protected] Subject: Re: The ultimate (another one!) definition of mainframe DOS was Digital Research's CPM if I remember correctly. And so M/S renamed it to DOS. Then eventually they had to make changes for sub directories (originally it was a single directly level file system). I think it was Tandy that at their DOS 2.11 they had sub-directories (I was using the Tandy copy of DOS in those days). Steve Thompson On 8/14/2023 6:14 PM, Grant Taylor wrote: > On 8/14/23 3:16 PM, Bob Bridges wrote: >> I sort of agree, but I think underneath we still disagree. I >> agree that IBM didn't think the PC software was worth >> developing. And if they had held onto MS-DOS and approached >> its development in the same way that Microsoft did, sure, >> they'd probably be worth bazillions. > > My hang up is that -- as I understand it -- DOS was /never/ > IBM's to start with. > > DOS was /Microsoft's/. > > Or are you suggesting that IBM should have purchased exclusive > rights to use / distribute / etc DOS from Microsoft? > > > > Grant. . . . > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO > IBM-MAIN -- Regards, Steve Thompson VS Strategies LLC Westfield IN 972-983-9430 cell ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
