[Info-vax] completion status from LIB$SPAWN

[Johnny Billquist]

On 2012-04-30 02.38, David Froble wrote:
> Jan-Erik Soderholm wrote:
>> Johnny Billquist wrote 2012-04-29 21:40:
>>> On 2012-04-29 20:48, David Froble wrote:
>>>> Paul Sture wrote:
>>>>> On Sun, 29 Apr 2012 14:09:41 +0000, glen herrmannsfeldt wrote:
>>>>>
>>>>>> Paul Sture <paul at sture.ch> wrote:
>>>>>>
>>>>>> (snip)
>>>>>>> There's also the history of compilers to consider. In my experience
>>>>>>> many commercial users (as opposed to scientific or academic
>>>>>>> users) who
>>>>>>> came to VAX/VMS in the early 1980s fell into 2 main camps:
>>>>>>> a) those who came from PDPs or other minis where BASIC was very
>>>>>>> popular
>>>>>>> b) those who came from more traditional mainframes where COBOL was
>>>>>>> pretty much king for business applications (IBM also had PL/I users
>>>>>>> in this sector).
>>>>>> And scientific users, mostly using Fortran.
>>>>>>
>>>>>
>>>>> Yes, and FORTRAN was the only HLL available for VMS when it first
>>>>> became available to ordinary customers. Was the earliest FORTRAN-IV? I
>>>>> did have that available on VMS at the end of 1980 (and was very glad
>>>>> for business usage when FORTRAN-77 came along with character variables
>>>>> among other new features).
>>>>>
>>>>
>>>> With the introduction of the Vax 11/780 in 1978 the initial target was
>>>> scientific users. Back at that time, that was a large market for DEC.
>>>>
>>>> Later, Basic Plus 2 was released on the 11/780 using PDP-11
>>>> compatibility mode. Several of the early systems had the PDP-11
>>>> compatibility mode, 11/750 and 11/730, and perhaps a few more. It
>>>> worked, but, it was PDP-11 compatibility mode, with the addressing
>>>> limitations, and still used the dreaded TKB and overlays.
>>>
>>> Back in VMS V1, basically everything was running in compatibility mode,
>>> FORTRAN included. And you still used RSX tools in general.
>>> One by one, VMS versions were developed of everything.
>>>
>>> As for PDP-11 compatibility mode in hardware, that existed in every
>>> machine
>>> until the VAX 8600 (and 8650). After that, it was all done in software.
>>>
>>> Johnny
>>>
>>
>> I had the impression that it was all VAX 11/xxx modells (that had HW
>> PDP-11 support), or is that a too simple answer ? :-)
>
> I believe the compatibility mode was in the 86?? models, as already
> mentioned, but after that was the era of the c-vax and then n-vax
> microprocessors, and they did not have it. Don't know about the 9000
> systems. Through the haze, it seems that while CPUs were multiple
> boards, it may have been included, but not on the CPU on a chip systems.

No machine after the 8600-series...
But of course, all VAXen can run the VAX-11 RSX product, which includes 
a PDP-11 emulator in software for those machines lacking the 
compatibility mode.

http://h30266.www3.hp.com/masterindex/spd/spd_0000f67f.txt

	Johnny