On March 28, Jeffrey Sharp wrote:
> This hex-width board was found sitting in a UNIBUS backplane. It looks like
> it may have more than two PCB layers. The metal handle, where the board
> number is usually stamped, is unmarked; no board number is stamped there. On
> the front side, top left, is "AD413A MADE IN USA". The top middle had the
> "200415-03" handwritten on it, but that has been crossed out by a marker,
> and "200850-02" appears beneath it. The top right has "S/N 5781"
> handwritten. There are two 50-pin BERG (maybe formatted Pertec) connectors
> at the front top. On the back of the board, at the top right, is "MRX42
> 200255-02", machine printed. A little to the left of that is "3183",
> handwritten.
>
> Google has returned nothing. What have I here?
Hmm...got pics?
-Dave
--
Dave McGuire "...it's leaving me this unpleasant,
St. Petersburg, FL damp feeling on my shorts..." -Sridhar
My $0.02:
Grab any known good TEAC FD55 (any model).
FD55B 40 track two sided (does most all 40track formats)
FD55F 80track two sided (not 1.2m capable)
FD55G 80track two sided (does all 80 track formats plus 1.2m)
They are common and decently reliable. With one of the FD55B, FD55G
and an older 3.5" (720/1.44) that gets me most all drive related formats
save for the oddball 5.25" drives (like the 100tpi stuff).
Allison
-----Original Message-----
From: Doc Shipley <doc(a)mdrconsult.com>
To: Classic Computers <classiccmp(a)classiccmp.org>
Date: Thursday, March 28, 2002 11:10 AM
Subject: 5.25" floppy model numbers
> Somebody recently posted a fairly comprehensive list of floppy drive
>model #s with their capacities & base specs. I'd like to grab a few
>not-1.2M drives before we scrap them, but I've misplaced the list.
>Would whoever it was be willing to repost?
>
> Thanks
> Doc
>
Just got one of these bad boys from Pudue for $20 with a RZ26L,
framebuffer card with a 3W3 on it, CDROM, 128M of RAM, KN17 CPU. Is the
RZ26 a 1G drive? And how clock speed is the proc?
I know I made out with a steal - he had no idea what it was :)
What kind of OS's are available besides NetBSD or Linux... Is there a
version of VMS or Ultrix that'll work? Also, I didn't get a keyboard with
it and didn't see one there. What kind of keyboard does it use, and can I
use a serial terminal instead?
Thanks for the help!
-- Pat
Rumor has it that Paul Thompson may have mentioned these words:
>There is a utility called persona that will work on recent versions of
>VMS which effectively works like su. You would need to install it with
>priv's in order not to be running those priv's needed to run it in your
>usual account.
>
>PERSONA.MAR, you would need to
>MACRO PERSONA.MAR
>LINK PERSONA.MAR (LINK/SYSEXE on alpha, as I recall)
[snip]
>10$:
> ; MOVAB ROUT1,M_DESC ; Done at initialization
> PUSHAL PROMP
> PUSHAL P_DESC
> CALLS #2,G^LIB$GET_FOREIGN ; Get required username
> BLBS R0,20$ ; of not OK, then
> BRW 100$ ; jump to error - message
[snip]
Is this an example of VAX/VMS assembly language?
And if so, what would a good reference be to learn it?
Thankz,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger --- sysadmin, Iceberg Computers
Recycling is good, right??? Ok, so I'll recycle an old .sig.
If at first you don't succeed, nuclear warhead
disarmament should *not* be your first career choice.
On March 28, John Allain wrote:
> Put simply:
> Anybody have any horror stories about using digital
> data 8mm tapes in a Camcorder?
> My personal belief is that they are overbuilt, if anything.
No horror stories specifically, but I do recall from when the
Exabyte 8500 came out that the tapes that were sold for data use were
the only ones that worked reliably in the 5GB drives...I read at the
time that the magnetic characteristics of the media were
different...higher coercivity I think, but I don't have specific
information.
For video use, I'd think there'd be nonlinear amplitude response at
best, but it's probably worth a try.
-Dave
--
Dave McGuire "...it's leaving me this unpleasant,
St. Petersburg, FL damp feeling on my shorts..." -Sridhar
From: Richard Erlacher <edick(a)idcomm.com>
>There's plenty of CP/M software out there. All you need to do is find one
of
>the mirrors of the late Tim Olmstead's unofficial CP/M site.
There are several still up, The last location of Tim's site is back up.
>original MSDOS' EDLIN. The editor of choice for CP/M would probably be
>WordStar, of which there are several versions for CP/M. It does come with
an
If you can find VEDIT, that is a very powerful screen editor with TECO macro
>from the command mode.
>Select the editor you want, keeping in mind that little of this stuff is
much
>use without a hard disk, which is not "rocket science" to add, provided you
>can snag a drive of the CP/M era. IDE drives are a mite more trouble, as
are
>SCSI types, but it's all been done. The maximum size for a CP/M 2.2 (plain
IDE offers the easiest of the lot to get and interface if the board was hard
disk
impared.
>vanilla version) system is 8 MB, and you can only have as many as 16
drives,
>including the floppies.
Thats per logical drive. A larger hard disk can be partitioned.
Or run one of the CP/M clones like P2DOS, ZRDOS, SUPRBDOS
as these have 32mb or higher logical disk limits.
>My understanding is that if you have a 60 MB drive,
>you can stick all the software that was ever published for CP/M, including
>sources, on it and still have room left. Some folks disagree, but I almost
I'd agree, actually most of the good must have stuff will fit easily on a 10
to 20mb drive with room to spare. The WC CP/M CDrom was I think under
100mb and that had whole libraries of several SIGs.
>believe that. Somebody sent me a CD of CP/M stuff that purportedly
contained
>pretty much "everything" there was, and it was barely 10% utilized.
Several
>CD's have been published, but most have what amounts to multiple copies of
the
>same stuff on them, so their capacity is not representative of what you
might
>need storage-wise.
The Walnut Creek cdrom is by far the most complete and maybe 10% utilized.
It's out of print but copies can be had. For serious CP/M users and
collectors
it's a must have along with the archivers used (ark, ARC, LHA, LBR...etal).
>Another thing to keep in mind is that the BigBoard runs at just over 2 MHz
>(2.5?). I've got several but really haven't considered how fast they run
in
>the original version, because I'm into hot-rodding. The software versions
I
>have don't use mode-2 interrupts, so one wonders why the designer used
those
>awkward Z80 peripherals that do little more than ensure that you can't run
the
>CPU faster than the peripherals, even though the CPU is quite capable of
it.
>Of course, the fact that the entire board is out of the Mostek and Zilog
>app-notes might explain that.
4mhz should be doable with minor effort. faster is as Dick said hampered
by the lack of suitably fast Z80 peripherals.
Allison
Thanks for the tip, Jeff; just browsed eBay and now that I have
a better idea what KIMs & AIMs are worth, I'll have to substantially
jack up the price of the AIM stuff I'm about to send ya :-)
Sounds reasonable, doesn't it Hans? Just to balance things out...
mike <grinning>
----------------Original Message----------------
Date: Wed, 27 Mar 2002 15:30:49 +0100
From: "Hans Franke" <Hans.Franke(a)mch20.sbs.de>
Subject: Re: SWTPc 6800 update
> > OK don't rub it in! :-/
> Rubbing it in would've been mentioning that the exact same
> KIM-1 setup I just picked up for near nothing had an identical twin
> on eBay go for $400..<g>
Somehow I get the impression that you are not a very sensitive friend :))
Trotzdem viel Spass
H.
I've got a couple of original sets as well, Version 1.1,
just in case. The 2nd disk had demo progs IIRC.
mike
-------------Original Message------------------
Date: Tue, 26 Mar 2002 23:24:59 -0700
From: "Richard Erlacher" <edick(a)idcomm.com>
Subject: Re: Turbo BASIC (was Re: QL (was: ZX-81 Question))
I'm quite comfortable that I have the file sets, but as far as the original
diskettes ... I don't know. I recall that I've got v1.0. That was on only
one diskette, IIRC.
That will easily fit in a zip file and fly via the 'net, I'd imagine.
That will leave me some time to hunt for the originals.
Dick
> From: Tony Duell <ard(a)p850ug1.demon.co.uk>
> Why is size/weight important for a machine that's not designed as a
portable?
Because heavier items cost more to ship and therefore cost more to
purchase??
> And as regards price, I (and virtually everone else I know) would rather
> pay enough and get something that's useable and reliable rather than pay
> too little and get something that's useless. I know this is an
> unconventional idea these days, though :-(
You are right on here. People nowadays could care less about quality if
they can save five percent of an item's cost.
> > Granted, the QL would possibly have enjoyed more success that way, but
> > Sinclair is Sinclair.
>
> Unfortunately, he's ruined just about all of his products in this way :-(
It's true. I'm a ZX81 fan because (as another listmember quipped) it's the
most minimalistic *full system* ever. But Sinclair's products were all
plagued with cheap parts. There are plenty of stories of how Sinclair
would change designs in the middle of a production run because they had
found a part that was ten cents cheaper, or they'd found a way to keep the
circuit intact while eliminating a couple of five-cent caps.
Glen
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> From: Stan Barr <stanb(a)dial.pipex.com>
> Just to confuse things further the schematic I have shows L1 pulling pin
> 19 of the 4118 up to 5V when that's installed, and no L2 at all!
> The text refers to 2x2114 or a 4118 installed in the UK version and a
> 2K option for export - possibly there are 2 versions of the board?
Damn near every one of these things I've seen has been different in *some*
way!
I'm sorting through and testing a couple of dozen right now -- more later.
Glen
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