On 08/07/2018 04:37 PM, Dan Greiner wrote:
Steve Thompson wrote:
BTW, there are a few instructions on IBM systems that are not
documented. One of those is, SIGH (ok, SIE :) ). You can't SIE an
SIE either (this is part of the Interpretive Execution Facility).
Actually, the original SIE was
Steve Thompson wrote:
> BTW, there are a few instructions on IBM systems that are not
> documented. One of those is, SIGH (ok, SIE :) ). You can't SIE an
> SIE either (this is part of the Interpretive Execution Facility).
Actually, the original SIE was documented in "IBM System/370 Extended
From: "Dan Greiner"
Sent: Tuesday, August 07, 2018 8:12 AM
I was once asked why the execute exception existed. That is, why not just let
the hardware —
or, in this odd case, the firmware — cascade down a chain of multiple EX
instructions,
ORing the bits of the R1 field with the subsequent
Dan,
>> where Linux developers will quickly remind you that zOS is not the
>> only OS
heh heh- I know an other opsys that runs on 360 type boxes (way longer
than Linux) and far more common genes with OS.
Martin
