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How much emulation is required to get System/360 code running on a modern IBM mainframe? Can the CPUs still run the original 32-bit code? Do CCWs and whatever o
by msla 1y ago
How much emulation is required to get System/360 code running on a modern IBM mainframe? Can the CPUs still run the original 32-bit code? Do CCWs and whatever other peripheral code still work?
- deleted 1y ago[deleted]
- zokier 1y agoIntels X86S proposal[1] gives perspective on this. Both in how there would be reasons to get rid of legacy, and how yet it still got shot down pretty quickly[2]. It's unfortunate that I don't think we ever got more explanation on it's termination, where did the opposition come from [1] https://news.ycombinator.com/item?id=36013257 https://news.ycombinator.com/item?id=36013257 [2] https://news.ycombinator.com/item?id=42468664 https://news.ycombinator.com/item?id=42468664
- msla 1y agoDid you reply to the wrong person?
- musicale 1y agoApparently user code can still run: "z/Architecture retains backward compatibility with previous 32-bit-data/31-bit-addressing architecture ESA/390 and its predecessors back to the 32-bit-data/24-bit-addressing System/360." https://en.wikipedia.org/wiki/Z/Architecture https://en.wikipedia.org/wiki/Z/Architecture