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A comment on IBM is splitting itself into two public companies. Parent comment

Re:IBM is splitting itself into two public companies by rbanffy on Thursday October 08, 2020 @03:32PM (#24722891)
IBM still has plenty of sexy hardware stuff - mainframe and POWER (AIX not so much) are pretty impressive.

That z/OS has tens of millions of lines of code surprised me the other day. It's not like it needs to support 23 brands of mouse and dozens of GPU architectures.

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Re:IBM is splitting itself into two public companies by devdas on Thursday October 08, 2020 @04:16PM (#24723410)
It's backwards compatible to really old versions. It wouldn't surprise me if 70% of that code was emulators for previous versions of the OS.
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Re:IBM is splitting itself into two public companies by trasz on Thursday October 08, 2020 @05:28PM (#24724118)
There’s not much compatibility for old versions of the OS - IIRC anything older than the hardware itself is not supported at all. Backwards compatibility is for user code.
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Re:IBM is splitting itself into two public companies by segfaultbuserr on Thursday October 08, 2020 @04:24PM (#24723514)
Even IBM S/360 is still being emulated.
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