They are also UP, so SunOS 4 will run on them...
As I recall, SunOS 4 would run on MP machines, though with some
restrictions. Perhaps only one CPU could be in the kernel at any
given time?
- Dan C.
On Tue, Jun 10, 2025 at 11:37 PM Henry Bent
<henry.r.bent(a)gmail.com> wrote:
>
> Yet another reason why I suggested a SPARCstation 2 or 5; of all of the machines
from that time period those are ones that will at least be reasonable with power
consumption.
>
> -Henry
>
> On Tue, 10 Jun 2025 at 23:20, Dan Cross <crossd(a)gmail.com> wrote:
>>
>> On Tue, Jun 10, 2025 at 1:44 PM Clem Cole <clemc(a)ccc.com> wrote:
>> > Can I suggest you start with OpenSIMH -
https://OpenSimH.org and try
running any a simulated system. It's a lot cheaper and while quite the same has
having the the actual hardware, a lot easier to manage and most everything you could do
from the old days can be done on you personal computer. If you want BlinkenLights, get
one on of Occar's wonderful PiDP11 kits -
https://obsolescence.wixsite.com/obsolescence/pidp-11 (which run OpenSIMH behind his
lights and switches). Again a lot small and will meet you budget constraints.
>>
>> Another side of that is power consumption. The older machines will
>> absolutely drink energy; OpenSIMH on a modern SBC is so much more
>> efficient in that regard.
>>
>> - Dan C.
>>
>> > On Mon, Jun 9, 2025 at 2:08 PM Vicente Collares via TUHS
<tuhs(a)tuhs.org> wrote:
>> >>
>> >> Hello Milo,
>> >>
>> >> On Mon, 9 Jun 2025 13:38:54 -0400
>> >> Milo Velimirović <milovelimirovic(a)gmail.com> wrote:
>> >>
>> >> > What’s your budget and what’s your level of hardware technical
skill? If budget is no concern, there are occasional complete pdp11 or vaxen on eBay. Or,
you could get CPU cards and interfaces to piece together a system. If you go that route a
Unibone or Qbone is highly recommended for both debugging and filling in hardwar gaps via
emulation. Alternatively, there are several FPGA projects to emulate -11s.
>> >>
>> >> Buying a complete PDP-11 or VAX is the dream, but it's not what
I'm
>> >> aiming for to start. I was thinking of something like a UNIX
>> >> workstation. I haven't thought about the possibility of piecing
together
>> >> a system using various cards. Thanks for pointing that out, I'll
have to
>> >> look into it.
>> >>
>> >> Budget is a concern for me. So ideally I would like to spend around
$500
>> >> USD on the actual computer. Is that realistic for the type of computer
I
>> >> mentioned above?
>> >>
>> >> I'm not hardware savvy, so I would have a limited ability to do
repairs
>> >> on the electronics. I do know someone who is though, so I might be able
>> >> to get some help on this project.
>> >>
>> >> I wish you an excellent week,
>> >>
>> >> Vicente
>> >> vicente(a)collares.ca