<hanco...@bbs.cpcn.com> wrote:No, not normally. If they must, they do it via SVC.
> On Aug 27, 9:28 pm, glen herrmannsfeldt <g...@ugcs.caltech.edu> wrote:
>> But the architecture includes the privileged instructions.
> That's a tricky question. The vast, vast majority of users of the S/
> Do utility programs like IDCAMS or SYNCSORT (an external purchased
> If we count priviledged instructions, should we then start worrying
> about hadware design? Undoubedtly Z series is completely different
> physically than a S/360 was, with all sorts of "pipes" and look-aheads
> previously not available on the low-end machines.
> But that's all transparent to the application programmer, even one
>>> Rather, I would say the 'children' have extensions to the original
>> For problem state, I agree. Even so, it seems that enough features
>> Changing the address space, to 31 and then 64 bits, is definitely
>> -- glen
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