[Info-vax] VSI: "Official 8.4-1H1 Launch"
Jan-Erik Soderholm
jan-erik.soderholm at telia.com
Fri Jun 5 03:32:01 EDT 2015
JF Mezei skrev den 2015-06-05 05:18:
> With the Poulson support done, I take it focus now goes to the port to
> the 8086 ?
>
> Considering x86 hardware is widely available, will this cause a
> different approach to the early porting stages porting compared to IA64
> and Alpha that started off on emulators ?
>
> Or do emulators provide additional debugging tools that are valuable to
> the low level engineering for early steps ?
>
> In what language is the EFI boot programme written ? (in the EFI
> "partition" in the ODS disk)
>
> Is the EFI source code used for IA64 easily recyclable by compiling it
> using x86 as target ? Or does it require major changes ?
>
> What about the first file in [SYSEXE] that is loaded (forget exact
> name), are the early parts written in x86 assembler ? Macro ?
>
> Considering that the early stage interfaces with EFI, would that portion
> also make it easy to port by just recompiling it with x86 as target ?
>
> Would it be correct to state that the architecture differences really
> start to matter after VMS has obtained from EFI the system configuration
> and starts to load its own drivers ?
>
> When a machine boots, how much is written in native assembler, how much
> in Macro ? and at what point do higher level languages such as C become
> usable ? (aka: at what boot message does VMS switch from native
> assembler to macro and at what boot message do higher level language
> code kick in ?
>
In what way is anything of that realy interesting (to anyone
utside of VSI)? And why would there be answers to that today?
You seems to have to much free time. Or maybe not
having any real VMS system to take care of... :-)
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