< ::How did that work? Made the S/N ratio horrible on copies? AFAIK no
< ::cassette recorder, at least not of the cheap consumer type, ever had
< ::automatic level control on _playback_.
<
< That was the idea, yes.
All that would do is make a high precentage of poorly readable tapes.
Likely they load their own loader that used a modified format that was
not the same. Lowering the level on audio casette where you only have
at best 34db (non dolby) of headroom on a portable would make a very
crummy recording. Dubbing through a level controlled amp would beat
that in a heart beat. The trick is imposing low freq noise like hum
or other tones below 40hz that are unheard at normal play speeds as they
are under the ability of the head to resolve. When you dupe tape at high
speed 5x-10x the then say 20hz tone is now a resolvable 100-200hz and
gets embedded (summed with data) as interfering noise (like a bad AC hum).
< ::> days before automatic level control), or required odd azimuth settin
< ::> would be toasted by dubbing. This probably shouldn't interfere with
< ::
< ::All that having the wrong azimuth would do is reduce the HF response.
< ::There's no way to tell an original played back on a machine with the
< ::heads at a different azimuth setting to the recording machine and a co
< ::of that recorded and played back on the same tape deck AFAIK. No casse
< ::recorder had software-controllable azimuth.
This is all bogus. Recording with the azimuth off kills the HF response
and no amount of tweeking with recover that on playback. It's not on the
tape so there is nothing you can recover. The wider the head gap or track
width the worse it will be. Casette recorders were full track mono (half
the width of the tape) so they were wide! If it's wrong on playback same
thing save for it's correctable.
Back in the audio cassette days I've seen more attributed and fixes
created based on presumed behavour. Every thing from amps to filters
and other funky curcuits that often weren't fixing the tape or recorders
problems but some illness in the system cassette interface. The best
example of that was they TRS80. For example my fix for there interface
believe it or not was remove ALL the analog on the input side and drive
the gate z24 pin9 through a 10uf cap with a 270ohm pull down on the pin.
There were at least two articles with filter/amps and other circuits
all unneeded for that! Most all didn't usnderstand the interface or
the behavour of audio tape.
Allison
For Thanksgiving, I acquired a Silicon Graphics IRIS 3130, which is a 680x0
based application specific system. Don't know a whole lot about it, yet,
but
I will post as I learn. What I do know is that it runs Unix and is intended
as
a tool for the production of animation. It has a GenLock feature, so if
some
of you have such experience, I would like to know what you know.
William R. Buckley
Did anyone else see this? I thought it was much worse than 2.0, but can
someone comment on its accuracy, whatever? I thought he left out a lot
of stuff, about bulletin board systems, and such.
I got my hands on a Aviv DZ-11 clone. 16-line MUX. So, I go about
shoving it in the 83. It boots 2.9BSD off a RL02. Shove device in,
set CSR and interrupt vector, and fire up BSD.
I screwed with the dtab line - With it using dzdma in place of dzou, I can't
make the MUX go. The kernel attaches it, but I can't seem to be able to talk
to it. So, I switched to dzou. Now, upon boot, I get the message:
dz 0 csr 160100 vector 320 no address found for dzou
SERIOUS CONFIGURATION ERROR^G^G^G
I've tried other vectors and other bus slots, and get no improvements
with either method (dzdma or dzou). Any ideas?
(Oh, and if you've got another SDZV11, the DIP switches are BACKWARDS of their
labels! 1=0 and 0=1. Cute, eh?)
I also have a DHV11, but no idea how to tell BSD it's there.
All I ever get from it is
dh ? csr 160020 vector 370 didn't interrupt
I think I need to set the DM address, but have no idea what to set it to.
-------
> On Fri, 27 Nov 1998, Peter Wilton-Jones wrote:
> > I have just come into ownership of an HP 71B with bar code
> > reader but am unable to scan with the reader or get a
> > program saved on it. Could you possibly put me in touch
> > with somone who may know. Cheers.
Please contact him directly....
p.g.g.wilton-jones(a)braford.ac.uk
BC
I downloaded Mosaic for the Mac, but I can't use it. I need a newer version
a Stuffit. The version I have is 1.5, and it just doesn't cut it anymore
(it was on the computer when I got it). I tried to download it, but you
need the new version to open the archive to install the new version
(basically useless).
Does anyone have a copy that they could email to me or something
(TeleDisk?)?
ThAnX,
--
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
PS>> If you have a copy, but don't have TeleDisk, let me know, and I'll send
you a copy.
In a message dated 11/27/98 1:04:56 AM US Eastern Standard Time,
jpero(a)pop.cgocable.net writes:
> Back to topic about oldie machine (8573 P75 will be 10 years real
> soon!)
cannot answer networking question, but ps2 models are now coming under the 10
year rule. my favourite machine!
