As a random guy who thinks that VAX-11 machines are neat, I also salute you!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
On 2015-07-04 4:35 PM, Mattis Lind wrote:
Well. Despite all recent VAX-11/750 bashing it actually booted both VMS 6.1
and Ultrix-32 4.0 today. ...
BTW. The CPU of the 11/750 is contained on five extended HEX boards,
(L0002, L0003, L0004, L0008, L0011/L0016/L0022). Then there is the optional
RMD
Well. Despite all recent VAX-11/750 bashing it actually booted both VMS 6.1
and Ultrix-32 4.0 today. Yes, the gate arrays can be a problem. But until
now I haven't found one that is faulty. The problem is usually bad contact
in the sockets which can be solved easily by removing them and clean the
c
In my efforts to understand the problem with the Cache/TB Diagnostics I
tried to run it under 11/750 simulator in SimH. It fails too!
ECKAL -- VAX 11/750 Cache/TB Diagnostic
HALT instruction, PC: 2608 (MTPR #F,#26)
Although not the same location.
On the real machine:
@?ECKAL -- VAX 11/750 C
> On Jun 15, 2015, at 11:59 , tony duell wrote:
>
>
>> I also may dump the console firmware PROMs at some point. I've already done
>> some preliminary
>> disassembly of the TU58 firmware.
>
> I am pretty sure I dumped all the PROMs and PALs in the CPU of my 11/730 (but
> not the ones in the
> I also may dump the console firmware PROMs at some point. I've already done
> some preliminary
> disassembly of the TU58 firmware.
I am pretty sure I dumped all the PROMs and PALs in the CPU of my 11/730 (but
not the ones in the
R80) long before there was a bitsavers. I can see if I can fin
On my phone right now. Might type more after lunch.
I think I have some 730 manuals that are not yet on Bitsavers. Some original
and some photocopies. I plan to scan all of them.
I also may dump the console firmware PROMs at some point. I've already done
some preliminary disassembly of the TU
> > The bad thing with the 11/750 is that is has so many socketed TTL gate
> > array chips. Sockets are bad. And gate arrays are bad. In that sense I
Years ago I was offered an 11/750 and turned it down as soon as I saw
inside the cardcage. No way would I want to maintain that mass of
custom gate
> On Jun 15, 2015, at 11:06 , Mattis Lind wrote:
>
> Well. I am probably working on to much simultaneously.
I am very guilty of that, too! :)
> Then I compiled your fork of tu58em on github. And it worked perfect. I
> didn't need to use the special vax mode that you have implemented though.
>
2015-06-15 17:32 GMT+02:00 Mark J. Blair :
> I wasn't aware that you are working on a 750 repair. Congratulations on
> the progress you have already made! Are you using real console tapes,
> tu58em, or something else?
>
Well. I am probably working on to much simultaneously. But this machine is
10
I wasn't aware that you are working on a 750 repair. Congratulations on the
progress you have already made! Are you using real console tapes, tu58em, or
something else?
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