montmorencyt2w
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I used to be a systems programmer/admin on IBM mainframes.
At one point, my employer was buying a new IBM-compatible mainframe from a large UK computer firm who were marketing it on behalf of a large Japanese firm.
It was designed to eventually run IBM's flagship mainframe operating system MVS/JES.
However, a demo machine I went to see (only in sunny Manchester, not Japan) was running the Japanese firm's own version of the Operating System.
I don't know to what extent (if any) they had lifted the IBM code (wouldn't have thought they would have risked that). I think they had actually reverse engineered the whole thing, i.e. basically written it from scratch as a lookalike.
It looked more or less like MVS/JES, give or take some strange message codes.
It was a good machine actually, but I don't think many were sold, at least, not via that UK firm.
No names, no pack drill.
At one point, my employer was buying a new IBM-compatible mainframe from a large UK computer firm who were marketing it on behalf of a large Japanese firm.
It was designed to eventually run IBM's flagship mainframe operating system MVS/JES.
However, a demo machine I went to see (only in sunny Manchester, not Japan) was running the Japanese firm's own version of the Operating System.
I don't know to what extent (if any) they had lifted the IBM code (wouldn't have thought they would have risked that). I think they had actually reverse engineered the whole thing, i.e. basically written it from scratch as a lookalike.
It looked more or less like MVS/JES, give or take some strange message codes.
It was a good machine actually, but I don't think many were sold, at least, not via that UK firm.
No names, no pack drill.