Sujet : Re: x86S Specification
De : alex.buell (at) *nospam* munted.eu (Single Stage to Orbit)
Groupes : comp.os.vmsDate : 18. Oct 2024, 06:53:45
Autres entêtes
Organisation : One very high maintenance cat
Message-ID : <5acb70a334dba080ecce579c4bf18c3edc448e7c.camel@munted.eu>
References : 1 2
User-Agent : Evolution 3.50.2
On Thu, 2024-10-17 at 19:27 -0400, Arne Vajhøj wrote:
One of the things proposed for removal is the Ring 1 and Ring 2
privilege
modes.
Does OpenVMS on AMD64 make use of these modes?
My understanding of the proposed changes are:
64 bit OS 64 bit app - works
64 bit OS 32 bit apps - works
32 bit OS 32 bit apps - gone
32 bit OS 16 bit apps - gone
16 bit OS 16 bit apps - gone
VMS x86-64 is 64 bit OS 64 bit apps (the fact that pointers are
often stored with only low 32 bit bit in RAM is irrelevant).
His question was about the ring priviledge modes, not what apps and
what OS will run on the proposed architecture. If you don't know, say
so!
-- Tactical Nuclear Kittens
x86S Specification
Re: x86S Specification