[Info-vax] RSTS/E and VMS connection

[bill]

On 4/12/2023 9:26 PM, Dave Froble wrote:
> On 4/12/2023 8:46 AM, bill wrote:
>> On 4/12/2023 8:22 AM, Simon Clubley wrote:
>>> On 2023-04-12, bill <bill.gunshannon at gmail.com> wrote:
>>>> On 4/12/2023 8:14 AM, Simon Clubley wrote:
>>>>> On 2023-04-12, Dave Froble <davef at tsoft-inc.com> wrote:
>>>>>> On 4/11/2023 9:13 PM, Jonathan wrote:
>>>>>>> On Friday, April 7, 2023 at 11:13:58?PM UTC-4, 
>>>>>>> terry-... at glaver.org wrote:
>>>>>>>>
>>>>>>>> There was at least one 3rd-party product that was specifically 
>>>>>>>> designed
>>>>>>>> to let RSTS users run their code pretty much unmodified on VMS. 
>>>>>>>> From:
>>>>>>>> http://bitsavers.trailing-edge.com/magazines/RSTS_Professional/RSTS_Professional_V04_N03_198206.pdf
>>>>>>>>
>>>>>>>>
>>>>>>>> "RSTS/E ON VAX
>>>>>>>> ROSS/V
>>>>>>>> (RSTS/E Operating System Simulator for VAX)
>>>>>>>
>>>>>>> Hmmm, we?re still at the same address? could probably dig up the 
>>>>>>> sources
>>>>>>> if someone wants to make a purchase. ;)
>>>>>>>
>>>>>>
>>>>>> Hmmm ....
>>>>>>
>>>>>> John, where do we find CPUs providing PDP-11 compatibility mode?
>>>>>>
>>>>>> :-)
>>>>>>
>>>>>
>>>>> SimH ? :-)
>>>>
>>>> Not even close.....  :-)
>>>>
>>>
>>> The VAX-11/780 emulator in SimH is reported to have the full PDP-11
>>> compatibility mode support, which addresses David's implied requirement
>>> that this ROSS/V product requires it.
>>>
>>
>> Sorry, I thought you were suggesting getting PDP-11 compatibility mode
>> by running SimH on the VAX.  Of course, the fact that you can run SimH
>> on a VAX kinda makes the need for ROSS/V go away, doesn't it?  :-)
>>
>> bill
>>
>>
> 
> No, not at all!  ROSS/V provided a RSTS environment on the early VAXs, 
> and I don't remember, but it might have been possible to run executables 
> copied from RSTS.  ROSS/V was an exceptional product.
> 

Well, while ROSS/V is a nice product, like so many products it
has outlived its need.  SimH emulating a PDP-11 on a VAX can run
real RSTS/E providing a RSTS environment and even running executables
copied from another machine running RSTS.

bill