How fast did it run?
In a message dated 98-01-07 17:05:26 EST, you write:
<< [Overclocking]
I once had a PC/XT overclocked to 25 or so MHz. It caught fire...
Basically, I just pulled the chip marked 25 MHz from a dead 386
and put it where the XT's ship was. It took about 10 minutes to start
emitting black smoke.
This was before I knew they were useful...
------- >>
At 17:15 6/01/98 -0500, PG Manney wrote:
>> > MFM (early 80's?)
>>
>> Very early 80's, I think, for the ST-506.
>>
>> > RLL (late 80's?)
>>
>> I tend to think of this as a minor variation of MFM, myself :-)
>
>Not quite. The interface is the same (ST-506/412), but the encoding is
>different.
>
>RLL-encoded ST-506/412 drives were finicky, especially as regards
>temperature -- you shouldn't LLF them cold, for example.
The problem, however, as I understand it, wasn't the ST-506/412 interface
itself, it was the fact that most of the drives that used this interface
used stepper motors to move the R/W heads. The high-end voice-coil drives
that used the
ST-506/412 interface were *far* more reliable, and usually didn't have any
problems using RLL encoding.
Regards,
| Scott McLauchlan |"Sometimes the need to mess with their heads|
|Information Services Division| outweighs the millstone of humiliation." |
| University of Canberra |__________Fox_Mulder_"The_X-Files:_Squeeze"_|
| scott(a)isd.canberra.edu.au |http://www.canberra.edu.au/~scott/home.html |
In a message dated 98-01-07 17:05:26 EST, you write:
<< I once had a PC/XT overclocked to 25 or so MHz. It caught fire...
Basically, I just pulled the chip marked 25 MHz from a dead 386
and put it where the XT's ship was. It took about 10 minutes to start
emitting black smoke.
This was before I knew they were useful... >>
A friend of mine once told me that they used to replace the 1mhz? crystal
on Kim-1 boards with an 8mhz crystal. Man, that 6502 was real fast for a
while. :-)
Well, we have 10 IIcis, 10 Powermac 5400/180s (slow as molasses) 1 clone, 2
quadras. They are all used, the IIcis are limited in usefullness, because of
the lack of FDD functionality
In a message dated 98-01-07 20:18:49 EST, you write:
<< This will help lot. Otherwise, replace them with newer Mac clones.
Cheaper in long run and less headache especially if they're at
school lab still used? Also these clones uses regular 15pin monitors
that was used for PC's.
>>
Can someone please help this man? Please send your replies to:
COCarlson(a)aol.com
---------- Forwarded message ----------
Date: Sat, 3 Jan 1998 17:13:00 EST
From: COCarlson <COCarlson(a)aol.com>
To: vcf(a)siconic.com
Subject: help
I need a command interpreter (command.com?) for a Kaypro XT. I had backed up
the files and was then removing files in preparation for giving this computer
to a grandchild. I accidentally deleted the system files. I have them backed
up, but I can't get to the "restore" option until I can boot the computer.
Actually, a Low density "system" diskette would be great.
COCarlson(a)aol.com
In a message dated 98-01-07 15:26:19 EST, you write:
<< One Mac IIcx - what good about this
one? I used to work on similar configuration of that model
when I was at college doing homework. Comments please. >>
I have this model in my collection. i managed to get it for $25 but have not
been able to test it since mine came with a radius two page display card which
is useless without the monitor. i finally did get a 1bit video card for it,
but now need to find a mono display for it which i still havent found! the cx
is a 68030 running at 16mhz. a better deal would be the IIci model which is
25mhz and built in video which can be used with a vga monitor if you use a
special dongle.
RE: ps2 models; I have 3 of them: two 8530 and a 9577. the model 77 i bought
>from work when they upgraded to pc300 desktops. two scsi adaptors, 16 meg, 200
400meg scsi drives running hpfs and os2 3.0. its an industrial strength
machine, and will probably outlive any other computer i own.
david.
I like the IIcis. They're cute little things. Pretty fast, too. The only
problem, and I'm wondering if anyone could help me, is this. My experience
with them was in a Macintosh Lab at a school. They have been used there for ~7
years. They have two problems. One is that the monitors power up
intermittently, probably due to the transformer. Ideas? The other is the disk
drives. They were all blown out with compressed air, but still didn't start
working correctly. Ideas?
> a better deal would be the IIci model which is
> 25mhz and built in video which can be used with a vga monitor if you use a
> special dongle.
<I've got a line on a Tektronix 6132 workstations, and I'm wondering what
<exactly it is. According to the current owner it runs Berkeley UNIX ver
<4.2 with some 4.3 extensions. Apparently it's been sitting in a closet
<unused for the last 8 years, so who knows if it's working. He also
<referred to it as a UTek workstation.
<
<I didn't even know Tek made any computers, and web searches bring up zilc
Look inside it may be a DEC PDP-11 series machine in differnt garb.
Allison
At 08:39 PM 1/6/98 -0800, you wrote:
>The absolute
>standout First Prize response was from Uncle Roger, with such
>a bizzare comment that I am left speechless -- thanx Unc -- I
Woohoo! I won! Yippee!
What do I get?
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
There is an awesome B205 page at the University of Virginia, plus
a pretty cool B5000 page nearby. Here's the URL:
http://www.cs.virginia.edu/brochure/images/manuals
It looks like they scanned in the original manuals for these beasties,
instead of just retyping them. Seeing the originals really adds to
the presentation, IMHO. And the B205 was _so_ cool - magnetic drum
as main memory! Those were the days.
Cheers,
Bill.
