Hi Doug,
At 01:49 AM 12/30/98 -0600, you wrote:
>In any case, here's a picture of Simon, the first personal computer from
>~1950:
> http://www.yowza.com/classiccmp/berkeley/simon.gif
>
Very interesting. Are the approx. 6 rows X 20 "modules" relays? Looks like
something that could be built without too much difficulty.
I assume you have it to have made the scanned image. Have you powered it?
-Dave
On Tue, 29 Dec 1998 ard(a)p850ug1.demon.co.uk wrote:
> What's particularly dangerous about the Mac Plus? I don't recall it being
> that bad when I was inside one.
You mentioned live parts in the power supply that shouldn't be live, IIRC
----------------------------------------------------
Max Eskin | kurtkilgor(a)bigfoot.com | AOL: kurtkilgor
In a message dated 30/12/98 00:30:15 GMT Standard Time,
ard(a)p850ug1.demon.co.uk writes:
> But I don't see how a CD-ROM could be infected.
In the case of file viruses it only needs the CD to contain an affected file.
In the case of bootable CDs all it needs is for them to be mastered on an
infected PC. In theory they can act just as well as vectors viruses but, of
course, it is less likely that you will get a boot sector infection from one
as I would hazard a guess that most people do not have their PC set to boot
>from CD first whereas a lot of PCs are left with the floppy as the default
boot device.
Regards
Pete
In a message dated 30/12/98 03:06:06 GMT Standard Time, kurtkilg(a)geocities.com
writes:
> For one thing, I've never gotten any virus. FOr the other, can't you get
> rid of boot sector virii w/FDISK /MBR? If not, what is a good way of
> getting rid of them?
fdisk /MBR is very dangerous unless you are absolutely sure what you are
doing. If the machine is affected by any virus which moves or encrypts the
partition table then this method will lose you all of your data. The same
will happen if you are using any disk remapping software such as DM to get
around size limits.
Regards
Pete
On Tue, 29 Dec 1998 ard(a)p850ug1.demon.co.uk wrote:
> The PC? Well it has active high edge triggered signals. I believe
> (although I would have to check all the details) this saves one TTL chip
> on the PC motherboard. A chip costing <$0.50 in _1 off_. And we've had
> the IRQ sharing problem ever since....
If I understood, this could be summed up as:
When an interrupt happens, the interrupt line is pulled low by the
interrupting device. If it's edge triggered, the CPU can't tell how many
devices are causing the interrupt and only services the first one.
And are you saying that if they were level-triggered, I could have two
devices on IRQ 7? And is it easy to design a level-triggered equivalent
to the PC on paper? Are all PS/2 s level-triggered or only the MCA ones?
----------------------------------------------------
Max Eskin | kurtkilgor(a)bigfoot.com | AOL: kurtkilgor
On Wed, 30 Dec 1998 tim(a)thereviewguide.com wrote:
> to any OS they've seen. (Seems that most popular OS's work in a similiar
> way, such as how you can change between DIR and ls fairly easily, etc.
> Sometimes not that related, but nothing's really far-out there.)
Yes, I've noticed that too. All variations on a theme. Except the GUIs
which are somewhat more variable, and the BASICs which often come up with
different ways of accessing drives.
----------------------------------------------------
Max Eskin | kurtkilgor(a)bigfoot.com | AOL: kurtkilgor
At 01:15 AM 12/30/98 -0800, The Sam Ismail wrote:
>
>The OCR is OK when the text is just normal, and does remarkably well. But
>I need an OCR suite smarter than Xerox's TextBridge Classic. I also need
>some good post-processing software, or at least need to know how to scan a
>simple black & white document without the scanner introducing blotches and
>crap. Any suggestions?
I've used Caere OmniPage in the past, and it seemed pretty good, but
I wasn't trying to scan old computer docs, just nice typewriter pages.
I'm very interested in the collective wisdom about this, so of course
it seems quite on-topic to me. I'd like to scan the ASR-33 Teletype
manuals, which contain plenty of odd hand-set type, drawings, off-size
pages, schematics, etc. I'd also like to restore the UCSD Pascal
manuals, of which I've heard the only electronic copies at UCSD were
lost a long time ago.
Given these problems of line art and odd character sets, I suspect
the most useful first step would be to scan all docs at a given
resolution, then store them as bitmaps in a format most easily
loaded into any present or future OCR / PDF-ish program. Someone
mentioned the multi-page TIFF format. As for which resolution,
I think 300 DPI might be too coarse.
I like Doug's idea of shooting for HTML. I recall the multi-res
buttons on IBM's patent server, which allows you an easy way
to browse thumbnails, then zoom in on the desired page at various
resolutions. Is there an off-the-shelf tool for doing this?
- John
Actually, Netscape still goes wacky with 32 MB RAM, and a 4.3gig HD on a
P200. I think that some of the free browsers (IE, Opera, Mosaic, even
NETTAMER) outperform the overpriced netscrape.
--
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
>>Either buggy VGA driver or not enough ram. I found NS would do that with
>>8mb and with 12mb it wouldn't!
>
In a message dated 12/29/98 10:05:15 PM EST, kurtkilg(a)geocities.com writes:
<< For one thing, I've never gotten any virus. FOr the other, can't you get
rid of boot sector virii w/FDISK /MBR? If not, what is a good way of
getting rid of them? >>
two notes here:
you can use the /mbr switch, but if you are doing it off the hard drive, its
useless. of course you'd have to boot off a clean floppy. i know in the case
of pcdos7, sometimes you can run ibmavsh.exe which will immobolize some
viruses like the D3 one. in that case you can run ibmavsh, run /mbr and then
cycle the power and it's clean. in the case of monkey virus 2, if you run /mbr
you'll lose everything on the hard drive!
david
