[Info-vax] VSI OpenVMS Hobbyist Program Announced.

[Hans Bachner]

Craig A. Berry schrieb am 16.06.2019 um 20:59:
> On 6/16/19 11:47 AM, Hans Bachner wrote:
>
>> It appears as if the Avanti systems (at least FreeAvanti) used EV6 CPU
>> emulation regardless of the Alpha model configured.
>
> My hardware XP1000 says it's EV67 as expected:
>
> $ pipe show cpu/full | search sys$pipe "Type...........:"
>          Type...........: EV67, Pass 2.2.3 & Pass 2.2.5
>
> What does the Avanti system say?

Jan-Erik posted the info in <qe5rho$6g9$1 at dont-email.me>:

> $ show cpu/fu
>
> System: STUDNT, AlphaServer 400 4/166
>
> CPU 0    State: RUN          CPUDB: 81C16000     Handle: * None *
> ´[...]
>              Type...........: EV4 (21064), Pass 2 or 2.1
> [...]

But this is what Avanti tells you based on the configuration - it 
reports what has been configured, not necessarily what the emulator is 
really capable of. I suspect that the instructions added in EV6 are 
available despite what it tells the user when asked. The experiment with 
CHARON-AXP seems to confirm this assumption.

I don't know how Rdb checks for EV56 or above - presumably it uses the 
same source as SHOW CPU and does not explicitly test whether specific 
instructions are available or not. Of course I can be wrong.

Hans.