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Mar 11 at 0:34 audit First answers
Mar 11 at 8:19
Feb 26 at 19:42 comment added poncho "IBM PC was surprisingly welcoming of alternate operating systems right from the start"; actually, from day 1, they supported PC-DOS, CPM-86 (and USCD Pascal system)" - initially, it wasn't clear whether PC-DOS or CPM-86 would prevail...
Feb 26 at 17:46 comment added fooquency Loving the casualness of that statement... "If you choose to write your own operating system".
Feb 26 at 11:55 comment added Neil I think one place I worked at in 1989, had a copy of the technical reference. It was an A5 ring binder, with a purple hard cover. A remember a listing of the BIOS in one of the appendixes.
Feb 26 at 3:33 comment added Samveen The quote from the IBM PC guide is just perfect.
Feb 26 at 0:22 comment added Evert So many good answers, but I went with this one as it has a great source.
Feb 26 at 0:20 vote accept Evert
Feb 25 at 18:24 history edited jpa CC BY-SA 4.0
note about IBM welcoming other operating systems
Feb 25 at 18:10 history answered jpa CC BY-SA 4.0