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Yes - IBM was doing virtual machines back in the mid 1980s (I was using them on IBM's VM/CMS), long before such things appeared on unix-like or windows OSs. Th
by zabzonk 7y ago
Yes - IBM was doing virtual machines back in the mid 1980s (I was using them on IBM's VM/CMS), long before such things appeared on unix-like or windows OSs.
The amount of cool, ground-breaking stuff that IBM has done is severely under-estimated. I wouldn't count OS/2 as a part of that, however.
- jussij 7y ago> I wouldn't count OS/2 as a part of that, however. OS/2 1.3 came out at the beginning of 1990 and OS/2 2.x came out 1992. By comparison Windows 95 came out in 1995. So you need to compare OS/2 to MS-DOS, Windows 3.x and the Apple Macintosh systems of that time and by that comparison OS/2 was very good. In the early 90's I did a lot of development for OS/2, MS-DOS and Windows 3.x and OS/2 had the big advantage that a bug in your code would only crash your program where asd for MS-DOS and Windows 3.x it crashed the OS and required a full reboot. The fatal mistake IBM made was to hobble OS/2 2.x to the 80286 processor. By staying with the 80286 processor it meant OS/2 ran really struggled to run MS-DOS and Windows programs and that meant businesses just stayed with MS-DOS and Windows. If they had just gone with the 80386 processor (like they did 2 years later with OS/2 3.X) it would have meant the end of MS-DOS and Windows 3.x only because that later version of OS/2 ran Windows and MS-DOS programs better than Windows 95 which was still a year way.