At 07:50 PM 11/30/2010, Ethan Dicks wrote:
>In 7.3, I'm sure that's now true. I'm pretty sure I remember some
>COBOL and BASIC back in the 4.x and 5.x days, but I can't promise that
>my memory is 100% correct.
I think that's highly unlikely, particularly with COBOL since emulated
code wasn't something DEC wanted in the distribution. (and COBOL in the
4.x days used a number of instructions that weren't implemented in
MicroVaxen.) DEC didn't want clearly poorly performing software to be
in the kit.
That's the argument that allowed TECO32 to become part of the VMS
distribution.
-Rick
I canse anyone has not heard this...
I have been informed that Professor Sir Maurice Wilkes (designer of
EDSAC, etc) passed away yesterday (29th November 2010).
:-(
-tony
Anyone want a 17" SGI monitor? It's a Sony GDM-17E21 in "granite", as
used on an Indy or O2. Has HD15 and 5xBNC connectors. It's off the O2
on my desk, but I now have a set of flat screens and no room to keep
this CRT monitor. Collection is free from York UK -- sorry, but it's
impractical to ship.
--
Pete Peter Turnbull
Network Manager
University of York
I am looking for any of the following SCSI hard drives please:
Micropolis 1578-15 50-pin SCSI 5-inch full-height 332MB
Micropolis 1684-07M 50-pin SCSI 5-inch half-height 340MB
or any Unisys branded SCSI drives.
Some appear on eBay but the seller prices exceed my budget, especially
once shipping costs to Australia are included, so looking for someone
who might have some of these drives that they would like to part with
for a modest price+postage costs.
thanks.
I know I posted this a few days ago, but I find it hard to believe that
there are no Alpha Micro collectors on the list. Here is an opportunity
to make some money by parting with your working Alpha Micro for
no more than 60 days. Then you can have it back with ours (whatever
you can salvage for parts, I think the MB is bad, but the rest works).
Still no takers. I am told that AM6000, AM7000, AM8000 or Eagle 450
or Eagle 500 will work fine. Email me at fire at dls dot net.
Bradley Slavik
Oops, this was supposed to go to the whole list -- Ian
>
> > -----Original Message-----
> > From: tuhs-bounces at minnie.tuhs.org [mailto:tuhs-
> > bounces at minnie.tuhs.org] On Behalf Of Norman Wilson
> > Sent: Thursday, November 18, 2010 10:58 AM
> > To: tuhs at tuhs.org
> > Subject: Re: [TUHS] pdp11 question
> >
> > Just to loop things around a bit:
> >
> > Some of the larger VAXes used small PDP-11s (and their
> > bastard offspring) as console processors.
> >
> > This started with the very first VAX, the 11/780, which
> > used an 11/23 as a console. The console ran a stripped-down
> > system, possibly based on RT-11 or RSX-11, I forget (and
> > am typing this on a train in the Outer Mongolia part of
> > Texas where it's hard to look up references).
> >
>
> It is an 11/03, according to the Console Interface Technical
> Description manual and the part number of the processor board. The
> system looks to me to be RT-11 based. I know that I could read/write
> the floppies on an 11/03 running RT-11, which was how I recreated live
> media from disk images.
>
> > I don't know the whole list of what was used as a console
> > for different VAXes, but I do remember that the Nautilus
> > series (8500-8550-8700-8800) used either a Pro/350 or a
> > Pro/380, running P/OS, which was slightly more satisfactory
> > than the rude English non-computer expansion of PoS might
> > imply, but only slightly. Especially for those of us who
> > wrote code to fit into UNIX on the VAX and talk to the
> > console processor.
> >
> [snip]
>
> Another DEC machine to use an embedded computer as a console is the KL-
> 10 processor. It uses an 11/40 running a modified version of RSX-11
> called RSX-20F. Given that the KL was introduced in 1975, it predates
> the 11/780 in using this approach. -- Ian
Hi,
Does anyone happen to have the schematic of one of the SCSI->MFM/RLL
boards ? I have the Adaptec ACB-4000 and Xebec S1410A board documents
>from bitsavers but thy only have the schematics for the computer end.
All the talk of interfacing to SCSI has got me wanting to have a go :)
I'm just want to look and see how it was done in the olden
days....failing that I guess I'm gonna have to start tracing tracks.....
Cheers.
Phill.
--
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !
"You can twist perceptions, but reality won't budge" -- Rush.
Hi guys,
As you might have gathered from my other thread, I'm toying with the
idea of building a replacement controller card for my two dead
double-sided Amstrad disc drives. Ideally I'd like to use as many
"standard" parts as possible to ease debugging and future repair. I'll
probably use a GAL to handle head-stepping and the write protect
lockout, and LSTTL for the bus interface.
I'm also planning on adding an overvoltage crowbar (or maybe some form
of a MOSFET OVP switch) on the 5V rail to protect against the common
killer of these drives: plugging them into a PC PSU (the power plug is a
Berg floppy power connector, but with a mirrored pinout).
I've got my hands on a couple of Texas Instruments MC3470A floppy disc
read amplifier ICs, and the Apple Disk II schematics suggest how this
can be tied to a drive mechanism. What I'd like to do is look at a few
other drives which use this chip to make sure I understand everything
correctly (a double-sided drive with a single 3470A would be handy). If
I'm being honest, the TI datasheet for the chip is utter crap...
So does anyone know of any other FDDs -- besides the Disk II -- which
used the MC3470A as the head amplifier, or maybe a few applicable
application notes?
Thanks,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/