15 Jul
2024
15 Jul
'24
7:50 a.m.
I'm trying to do some organizing and came across a QED 993. Anyone have an
interest in it?
Thanks, Paul
1:39 p.m.
On Mon, Jul 15, 2024, 5:43 AM Jonathan Chapman via cctalk <
cctalk(a)classiccmp.org> wrote:
Sort of an 11/93 equivalent. On board RAM and SLUs, but no floating point
support. Maybe it runs RT-11 ok, I never bothered trying. As far as I know,
no one has be able to get RSTS/E 10.1 or 2.11BSD to successfully run on it.
I'm trying
to do some organizing and came across a QED 993. Anyone have
an
interest in it?
Is this that Xilinx not-quite-a-J11 board?
Thanks,
Jonathan
2:21 p.m.
On Jul 15, 2024, at 9:39 AM, Glen Slick via cctalk
<cctalk(a)classiccmp.org> wrote:
On Mon, Jul 15, 2024, 5:43 AM Jonathan Chapman via cctalk <
cctalk(a)classiccmp.org> wrote:
Sort of an 11/93 equivalent. On board RAM and SLUs, but no floating point
support. Maybe it runs RT-11 ok, I never bothered trying. As far as I know,
no one has be able to get RSTS/E 10.1 or 2.11BSD to successfully run on it.
It would be interesting to know what RSTS didn't like about that. RSTS will use
floating point if available but does not require it. But it does require a good emulation
of whatever real PDP-11 this device is trying to emulate; RSTS is known to be more picky
than a number of other OS, including RT-11. I've helped other emulation implementers
to fix the missing details that at one time kept RSTS from running on their creations...
paul
I'm
trying to do some organizing and came across a QED 993. Anyone have
an
interest in it?
Is this that Xilinx not-quite-a-J11 board?
Thanks,
Jonathan
2:25 p.m.
Sort of an 11/93 equivalent. On board RAM and SLUs,
but no floating point
support. Maybe it runs RT-11 ok, I never bothered trying. As far as I know,
no one has be able to get RSTS/E 10.1 or 2.11BSD to successfully run on it.
I'd be interested in it for the purpose of trying out the 2.11BSD floating point
emulation, which the documentation says is untested since 2.11 requires split I+D and
usually that implies floating point hardware.
Thanks,
Jonathan
2:31 p.m.
On Jul 15, 2024, at 10:25 AM, Jonathan Chapman via
cctalk <cctalk(a)classiccmp.org> wrote:
While it may be true that a lot of I/D capable systems were sold with FP, the two features
are separate and one does not imply the other.
paul
Sort of an 11/93 equivalent. On board RAM and
SLUs, but no floating point
support. Maybe it runs RT-11 ok, I never bothered trying. As far as I know,
no one has be able to get RSTS/E 10.1 or 2.11BSD to successfully run on it.
I'd be interested in it for the purpose of trying out the 2.11BSD floating point
emulation, which the documentation says is untested since 2.11 requires split I+D and
usually that implies floating point hardware.
2:35 p.m.
On Jul 15, 2024, at 10:25 AM, Jonathan Chapman via
cctalk <cctalk(a)classiccmp.org> wrote:
BTW, if you want to test that, SIMH would be an obvious way: just configure it as an 11/45
with no FPP, or some other similar setup that combines the configuration settings you
want. For example, "set cpu 11/45" or "set cpu 11/70" followed by
"set cpu nofpp" will do that.
paul
Sort of an 11/93 equivalent. On board RAM and
SLUs, but no floating point
support. Maybe it runs RT-11 ok, I never bothered trying. As far as I know,
no one has be able to get RSTS/E 10.1 or 2.11BSD to successfully run on it.
I'd be interested in it for the purpose of trying out the 2.11BSD floating point
emulation, which the documentation says is untested since 2.11 requires split I+D and
usually that implies floating point hardware.
Thanks,
Jonathan 
17 Jul
17 Jul
2:48 p.m.
On 2024-07-15 08:04, Jonathan Chapman via cctalk wrote:
Lots of Xilinx FPGAs :)
http://bitsavers.org/pdf/quickwareEngineering/QED-993/QED-993-top.jpg
I'm trying
to do some organizing and came across a QED 993. Anyone have an
interest in it?
Is this that Xilinx not-quite-a-J11 board? 
3:14 p.m.
On Wed, Jul 17, 2024, 7:58 AM emanuel stiebler via cctalk <
cctalk(a)classiccmp.org> wrote:
On 2024-07-15 08:04, Jonathan Chapman via cctalk
wrote:
Lots of Xilinx FPGAs :)
http://bitsavers.org/pdf/quickwareEngineering/QED-993/QED-993-top.jpg
The MC68360 provides the SLU ports, only 4 instead of the 8 of a real
11/93, and runs the console boot and configuration firmware. (I have some
source code for the MC68360 firmware I got from an QED engineer).
There are settings to change some aspects of the host software visible CPU
type. I tried a few different settings but could never get RSTS/E to
install. I probably have some notes saved away somewhere with details,
although it might be quicker to set up the system again for experiments
than it would be to find my notes.
> I'm trying to do some organizing and came
across a QED 993. Anyone have
an
interest
in it?
Is this that Xilinx not-quite-a-J11 board?
3:26 p.m.
On Jul 17, 2024, at 11:14 AM, Glen Slick via cctalk
<cctalk(a)classiccmp.org> wrote:
...
There are settings to change some aspects of the host software visible CPU
type. I tried a few different settings but could never get RSTS/E to
install. I probably have some notes saved away somewhere with details,
although it might be quicker to set up the system again for experiments
than it would be to find my notes.
That would definitely be interesting. RSTS is pretty good about issuing error messages
when it sees something it doesn't like. That assumes it doesn't simply crash in
the OS due to an assumption that's violated by the QED. But even then, a crash dump
would give clues. Worst case it will require some code reading to see what the code is
expecting vs. what it actually gets.
paul
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days inactive
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days old
9 comments
5 participants
participants (5)
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emanuel stiebler -
Glen Slick -
Jonathan Chapman -
Paul Anderson -
Paul Koning