> From: Bill Gunshannon
> when I get it done I will be glad to provide you with a dump of the
> root and usr partitions. I may be able to do SIMH disk images as well,
> but I have been working mostly with E11.
E11 disk images in files aren't anything odd, just a straight bit-bit copy of
what would be in the parititon. (When I transfer RK05 partitions on E11 to SD
cards for use in the QSIC, I just 'dd' the file holding the partition to the
appropriate blocks on the SD card, and it comes out fine.)
Dunno about SIMH disk imaages (I know the tapes images are tweaked).
Noel
Anybody had any luck with this configuration?
I used VTServer to install it and everything works fine
except for the very last step. It installs completely
and boots from within VTServer with ra(0,0,0)unix. I
issue the "dd if=/mdec/rauboot of=/def/rra0a count=1" and
it completes successfully. But the disk still won't boot.
I have tried it three times now with the same results.
Suggestions?
bill
Hi all,
I just bought this Burroughs BU4400 tape drive:
https://www.trademe.co.nz/Browse/Listing.aspx?id=1999913439
As the seller says, Google comes up empty. Seems strange, I would have
expected some reference somewhere. Does anyone know anything about it?
I'm going to pick it up this evening. It'd be superb as a display piece,
but I'd be really keen to drive it with something and get it reading and
writing.
On that topic, are there any suggestions on how I could get my hands on
a few tapes, preferably with a format this drive can read? The actual
contents aren't important; even blanks would be OK, though not being
able to get it reading before moving on to writing would make the
project more difficult.
Cheers,
Mike
This will mostly interest TRS-80 enthusiasts on this list.
Being a TRS-80 enthusiast myself it has been a long-time dream of mine to
create a specialised TRS-80 search engine but creating a web facing search
engine to crawl numerous sites, index and categorise was quite difficult on
a low budget. For some time I used Google's Custom Search, the ad free paid
version, but Google withdrew that product so it took be back to my starting
point. I could have continued with the ad version but somehow I didn't want
a page full of ads for users of this site. In any case doing it in my own
right gave me a lot more granularity and control.
So after much experimenting and trialling I finally produced the site in its
own right and have just relaunched it. It is, in fact will always be, work
in progress and I'm always on the lookout for more TRS-80 resources to add
to the site and for any advice on omissions, corrections, additions etc. If
you know any sites that I haven't included please use the contact form on
the site to let me know.
Check it out at theretrosearch.com
Thank you!!
Kevin Parker
can anyone help this guy out?
From: Benjamin Carlson <bcarlson at northpointdefense.com>
Sent: Tuesday, April 02, 2019 9:12 AM
Subject: Fwd: Re: MicroVAX
Greta, my name is Ben Carlson and I am attempting to restore an old DEC MicroVAX II for the University of Oklahoma's
collections department (see email below, Kerry is their curator). At this point, I believe I can get the hardware
operating but I have no operating system for itas the Air Force insisted on destroying the hard drive. I have been able
to replace the hard drive and the system has a tape drive and CD-ROM.
Do you have any idea where I might find the OS? Also, any documentation would be great as well.
Thanks for your help!
Benjamin Carlson, PhD, CISSP
Senior Research Engineer
North Point Defense
Rome, NY
(315)571-0221 x 1010
I'm writing a S/360 Model 50 emulator that runs at the microcode level, in
order to drive a Model 50 front panel accurately. I'm about 80% of the way
there, but there are some microcode operations that I haven't figured out.
So I figured I'd ask if anyone has obscure Model 50 manuals that aren't on
bitsavers, or perhaps even the ALDs.
I was surprised at how extremely different the microcode is from the 360
instruction set. I've figured out a bunch of the strange
micro-instructions, such as S47?E, which ORs the emit field into flags 4
through 7. But there are many micro-instructions that still puzzle me,
like F?FPSL4 which maybe a floating point shift left 4 and 1?BS*MB which
does something with byte stats. So if anyone happens to have a Model 50
microcode programming manual sitting around, please let me know :-)
Thanks,
Ken
Hey all --
Trying to track down technical info for a Dilog DQ100 controller. This is
a QBus controller compatible with the RK11 (or RKV11, in this case) that
works with various RK05-compatible drives. (See the brochure here:
http://www.bitsavers.org/pdf/dilog/brochures/DQ100_Brochure_Aug1980.pdf)
At minimum, I'd like to know the connector pinout so that I might wire up a
Diablo 31 to it.
Thanks as always,
Josh
> From: William Donzelli
> It is very likely IBM does not have the information anymore - at least
> not in the archives. ... they simply did not keep much from that era.
> It was probably disposed of back when IBM was in trouble 30 years ago.
Which emphasizes that it's important to make the point to IBM that we
wouldn't be asking for IBM to supply the information; rather, this is about
being able to reproduce info that IBM itself may no longer have.
Is anyone up for tackling IBM? If so, and we need support, I can ask my
Master, Jerry Saltzer, if anyone he knew at IBM is still there - he used to
have a lot of influence inside IBM (he's the person who got FS killed, I was
informed). But that was a long time ago...
> From: Jay Jaeger
> I suspect, but do not know of course, that the reasons that the owners
> would not part with their copies was ... concern over their value
> becoming diminished by having scanned copies around.
One easy way to test that is to have Al ask the person with the ALD's if
they'd be OK with having that stuff scanned if we got an OK from IBM.
Noel
