I have an old (over 11yrs old) Hitachi 21"
CRT model CM2111MU (sub model 512), also known as a SuperScan Mc21HR RasterOps,
that seems to have a little overlap/failure to line-up on the colors (also
known as a convergence issue as I've been told). I can't seem to find anyone
in the area who still works on these damned things. Anyone have any pointers
to fixing convergence issues or know of anyone in the Hudson Valley area
(NY) that could fix this big bastard? Any assistance would be greatly
appeciated.
PS: I'm currently also working on acquiring a semi-working old MAC Classic
II (I believe), are there any resource sites that have technical sheets,
etc. to fixing it?
John Boffemmyer IV
Don said
> Amusing to think someone will spend $125+/node
>just to live WITHOUT a keyboard! :-(
Somewhat disappointing, too. The way you run servers without keyboards is using a serial terminal plugged into a multiplexer.
Clean, and substantially less pricy. No Wizards or other excuses, though - you have to know your stuff for that.
--- Jules Richardson <julesrichardsonuk at yahoo.co.uk
> wrote:
> Don wrote:
> > Stan Barr wrote:
> >> Hi,
> >>
> >> Jules Richardson said:
> >>
> >>> Given that the licence is only for the BBC
> channels, and I'll perhaps
> >>> watch 2-3 hours of them per week, it works out
> as quite an expense
> >>> per programme!
> >>
> >> Not quite - the licence is for having _any_
> equipment installed in your
> >> home capable of receiving broadcast tv - _any_
> broadcast tv. The money
> >> goes (mostly) to the bbc, but a licence is
> required for any broadcast
> >> tv equipment including, but not limited to, a t
v
> set, video or dvd
> >> recorder with a tuner or a computer with a tune
r.
> You still have to
> >> pay even if you never watch the bbc :-(
> >
> > So, the *tuner* is the gotcha? I.e. if you used
a
> component
> > DVD player/recorder, a video *monitor*, etc.
> *they* would be
> > exempt?
>
> Actually, the way I always understood it is that t
he
> licence fee funds the BBC
> and isn't used for anything else (such and funding
> general transmitter
> install/upkeep). But the Government call it a "TV
> licence" even though all the
> cash goes to the BBC, and therefore you need to pa
y
> for the licence if you
> want to watch any channels, not just the BBC.
>
> I don't know how well it's been challenged in cour
t
> - but as the BBC transmits
> on slightly different frequencies across the count
ry
> it'd be hard to market a
> device that was guaranteed not to be able to recei
ve
> the BBC now or in the
> future, whilst being able to receive anything else
.
>
Thats the way I think it works too. I believe
the BBC had to renew the patent (or whatever)
a few years ago, so we'll be paying them for
another 50 years or so.
For those outside the US, the BBC also runs
atleast 5 main radio stations , plus local ones,
here in the UK.
Also, some handheld games devices such as
my Sega Gamegear (and I believe Nintendo's
Game Boy Advance) have TV Tuners which allow
them to receive terrestrial TV.
Not quite sure how good the picture quality is
as I don't have a PSU for my Gamegear yet! :(
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
>
>Subject: Re: PDP-8 /e/f/m memory
> From: "Jay West" <jwest at classiccmp.org>
> Date: Mon, 14 Aug 2006 12:41:55 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>Chuck wrote...
>> I did a semiconductor memory design for the OMNIBUS several years ago. It
>> was for an -8/e and 32kW using two SRAMs. I never got to documenting it
>> outside of my notebook, but if there is enough interest, I could do some
>> schematics. It is battery backed, so its pretty much equivalent to the
>> core I was replacing.
>
>Maybe it was your diagram I got years ago. Someone did a nice 32kw board for
>the 8e using two 2114's I think it was. I have the schematics somewhere
Must have been two 61256. the 2114 is a 1kx4 memory and three would be
needed to create a word wide memory. I know this as I made a 3k ram for a
6100 system.
The 61256 is 32kx8, two would be 32kx16, throw away 4 bits and you have
a 32k word memory cheap.
>still. The only reason I didn't build it right away was because at the time
>I got them, the person said "these schematics aren't quite final, there may
>have been some tweaking afterwards that didn't make it to the schematic" so
>I just sat on them.
>
>A known working design - I'd want to build that in a heartbeat :)
>
>Jay West
I figured before I embark as it will be winter before I WWrap it
(too warm now) I'd check and see if someone else attacked the problem.
Allison
--- Jim Leonard <trixter at oldskool.org> wrote:
> On Mon, Aug 14, 2006 at 09:49:16AM -0700, Chuck
> Guzis wrote:
> > In any case, the LZW patent is now firmly
> ensconced in history and should
> > not be a reason to avoid a particular compressed
> format.
>
> ...with the exception that LZW was never very
> efficient to begin
> with. :-) LZ77 variants (specifically LZSS and i
ts
> variants) have always
> outperformed LZ78 variants like LZW.
> --
> Jim Leonard
LZW was the first compression method I am
able to understand and use... although the
compression/decompression does get very
slow.
I understand the (fixed) Huffman method in theory,
but am currently unable to implement it. I
certainly wouldn't even know where to start
for the variable Huffman method :(
Has anyone created their own compression
method or have any pointers for someone
wanting to create their own?
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
On 8/8/06, Zane H. Healy <healyzh at aracnet.com> wrote:
> Does anyone have any idea on how to remove oil from Microfiche? The
> History Resource Center has a stack of fiche with oil all over it
> that needs to be cleaned up.
A great deal will depend on the type of fiche. If they're
originals, you can use a soft cloth (such as diaper flannel or jersey
t-shirt material) and isopranol, "tape head cleaner" (used to get it
at radio shack), or high-proof isopropyl alcohol.
If it's a colored fiche (ie: diazo duplicate), this is NOT what you
want to do. Alcohol tends to kill diazo rather handily. Good old
water and a very mild soap works great.
No scrubbing for either, as you'll tear the emulsion. Just gently
work it with the soft cloth.
One you've got it cleaned up, you can rinse it with clean water
(distilled), blot the excess, and let it air-dry, or use a hair dryer
set on "cool/no heat."
I deal with this type of damage on occassion. One of the perks of
working for a microfilm shop.
--Shaun
--
"If you live to be a hundred, I want to live to be a hundred minus
one day, so I never have to live without you." -- Winnie The Pooh
http://www.lungs4amber.org
Problem with my 1101 -- it turns on but I only get a bunch of vertical lines
instead of the splash screen.
It worked fine until a couple of months ago. I haven't got any clue about
how to fix this. Can anyone help?
>
>Subject: Re: PDP-8 /e/f/m memory
> From: Gerold Pauler <gerold.pauler at gmx.net>
> Date: Mon, 14 Aug 2006 19:11:48 +0200
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>If you are able to read german text, then the documentation of a 32KW
>dynamic memory modul
>from mico for the pdp8/e/f/m and /a may give some hints.
>I've made a scan available under
>http://pdp8.de/download/mico-mem.pdf
Thanks, While I do not speak German it is still and engineering document
so it's form and content are known. Makes working with foreign languages
easier.
It will be of some help along with the DEC docs I have.
Allison
>
>- Gerold
>
>C H Dickman wrote:
>
>> vrs wrote:
>>
>>> I looked at doing one of these, but got kind of lost about how the
>>> timing signals are used. I looked at the MOS RAM for the 8/A, but
>>> there's all this cruft for refresh in there, some stuff about
>>> suppressing access during ROM access, etc. And then it looks like
>>> the memory timing signals are derived somehow from the memory refresh
>>> stuff??
>>>
>>> Is there a nice place where the Omnibus memory interface control
>>> signals are explained somewhere?
>>>
>>
>> I did a semiconductor memory design for the OMNIBUS several years ago.
>> It was for an -8/e and 32kW using two SRAMs. I never got to
>> documenting it outside of my notebook, but if there is enough
>> interest, I could do some schematics. It is battery backed, so its
>> pretty much equivalent to the core I was replacing.
>>
>> The Small Computer Handbook, the maintenance manuals and timing
>> diagrams from the processor print sets had enough information for me.
>>
>> -chuck
>
Hi,
I ran across an interesting gadget at a university surplus sale, maybe someone
can tell me how useful it is. It's an EX 2000 Disk Drive Tester. It came
with a couple manuals and some 5.25" alignment floppies. The manual says it's
"used to align and repair floppy disk drives with industry standard SA400 and
SA800 interfaces", and says the connections on the end are for 5.25" and 8"
drives. Here's a photo:
http://www.soupwizard.com/temp/ex2000.jpg
I'm extremely unlikely to be doing any floppy repairs myself, so would this be
useful to anyone else?
Jeff
Does anyone have copies of "Computing" magazine from 1981? I think this was
a British publication but I'm not certain. Specifically I'm looking for an
article in the April 9 titled "NewBrain order freeze as project is reviewed"
or something similar. That information is from http://tinyurl.com/z9e5l.
- Evan
