On Sat, 19 Jan 2019 12:01:34 -0700 "Keith Medcalf" <kmedc...@dessus.com> wrote:
> Microsoft took the OS/2 3.0 Beta 2 code and generated their OS/2 New > Technology. The "New Technology" part was considered to be a bit to > long, so Microsoft shortened it to NT, replaced the Presentation > Manager with with Windows layer, added the "Windows Subsystem" and > released it as Windows NT. The whole message was fun to read; I just wanted to correct this part. You'll remember Microsoft hired David Cutler from DEC to create Windows NT. AFAIK there was no OS/2 technology per se in NT. Some of the Windows API was shared across all three -- DOS/Windows, OS/2, and NT -- but the underlying OS functionality -- scheduling, memory model, I/O -- was utterly different. Of the 3, NT was the only one with demand-paged virtual memory and isolated per-process virtual addressing on the i386 platform. Notably, early versions of NT put the video driver in userspace, not in the kernel. That made processing more reliable and games slower. History has since shown that Microsoft, when faced with a choice between correct and fast, always chose fast. --jkl _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
