[Info-vax] clock problems with OpenVMS x86 on VirtualBox

[Robert A. Brooks]

On 5/7/2023 6:44 PM, David Turner wrote:
> Like I have always suspected.
> I think there is more of an emulator in the OpenVMS x86 code than has been 
> admitted.
> The faster the CPU on the virtualbox the faster your "native X86" code is gonna run
> Anyone care to elaborate or prove this?

With every port, more code has been moved from hardware to firmware to software.

Alpha to IA64 required a new mechanism (SoftWare Interupt Services, otherwise 
known as SWIS) to handle stuff that was in VAX hardware and Alpha firmware.
SWIS also exists for X86_64 VMS.

There is no VEST/TIE-like mechanism for running non-X86 code on VMS for X86_64.

This is not a VAX/VMS V1.0 situation where some of the VMS commonly-used system 
programs were RSX images.

-- 

                    --- Rob