I just picked up an AppleII and 2 FDDs with a bunch of add-ons
at a local thrift store. The only Apple I have explored is my Mac+.
Anyone able to identify the cards ?
A Disk II interface card...... obvious.
Ram Module by Multiflex Tech Inc.....I imagine additional ram
Grapple+ Printer Interface......... Serial, Parallel ??
Multiflex Tech ...Long card with kludged cable to an RCA male
connector and another to a clothes-pin chip staddler labelled
AP TC/14. Two labelled chips "Firmware" and "Char. Gen." (imagine
this is a video card of some sort.)
Modem 80 card with 2 tel. jacks........... Baud-rate ?
CableTV kludge to a "SUP 'R' MOD CH.33 TV Interface Unit ??
External added-on connector 2x3 blade (like an AC outlet but with 3
pairs of smaller female recepticles in one unit) ??
It also has what I imagine is stock Ext. video (single RCA) and
cassette (2 mini-pin i/o )
Any help appreciated.
ciao larry
lwalkerN0spaM(a)interlog.com
Last fall, I bought a Model 100 which was fine, except the LCD
doesn't work. I thought I could fix it, but find I really have
no time to troubleshoot it . ..
I'm willing to resell it to anyone on this list for $10 + shipping,
send me e-mail if you're interested.
-------------------------------------------------------------------------------
Charles P. Hobbs __ __ ____ ___ ___ ____
transit(a)primenet.com /__)/__) / / / / /_ /\ / /_ /
/ / \ / / / / /__ / \/ /___ /
-------------------------------------------------------------------------------
> > 1) Check the PSU in the 11/34 CPU. It's probably fine,
> > but you don't want to ruin all your boards
>
> How should I check the power supply? I know that many people here
> say you should always do this but with the small cheap micros I've
> picked up so far I haven't bothered.
Disconnect the PSU from the backplanes. Inspect it visually to make
sure there are no obvious uprooted components, cooked tracks, etc.
Connect dummy loads between the important supply rails and ground (I
think they are +5V +15V and -15V in a PDP - Can someone confirm this?
Do you need a load on the 20V rail as well?) and switch on. Measure the
voltages across the dummy loads.
Generally the 15V rails don't need to be loaded very heavily - a
resistor of 100 ohms rated at a few watts ought to do it. You ought to
try and draw several amps from the 5V rail - a 6V car headlamp bulb is
ideal. Light bulbs make good dummy loads in any case because you can
see if there is any current there...
Beyond that, there are plenty of PDP hackers on this list who can take
up the story at this point...
Philip.
PS I too will admit to not doing this nearly often enough...
Sam Ismail <dastar(a)wco.com> wrote:
> The Lawrence Livermore National Laboratories (across the street from my
> neighborhood) auctioned off their Cray in 1993 and it was sold for $10,000
> to some oaf who said he could get lots of gold out of it and was thus very
> excited (there was a newspaper article about it). I was incensed, but oh
> well. I expect there will be similarly high bidding by the scrappers on
> this poor guy as well.
Hmm, Tony Cole? Seems he has put one on display at The Computer
Museum's History Center and is selling bits and pieces of others,
encased in Lucite as geek memorabilia. There was a story about this in
the San Jose Mercury a while back, which probably means that it's up
on their web site, hmm....
http://www.sjmercury.com/columnists/cassidy/docs/mc011898.htm
-Frank McConnell
I have a slightly wierd problem. Not sure if it is hardware or software.
Ok, I turn the 4p on with no floppy in the drive. It says:
The Floppy Disk Drive is not Ready. (in 3 languages, no less)
I put in the TRSDOS 6 system disk, the system appears to boot,
but the monitor looks like there is no sync. It is very fuzzy. I can type
in the date, and enter a command (dir :1), and the system appears to
do it.
Why does actually getting booted up cause the monitor to be unusable?
Trying other disks in the drive, if they are not system disks, causes other
messages to appear, perfectly readable.
Any ideas?
Kelly
Greets:
This weekend I had a great run of the swap meets, etc., in Wichita,
Kansas and came home with about 50 different machines, tons of software,
etc., etc. Anyway, there are two specific machines I would like to ask
about now, I will post further questions on several others in the
future.
First, I picked up an Epson HX-40 laptop-sized computer. On the front it
says MagicBox above the LCD screen. On the back there is a battery bay
as well as a rom chip bay, and it says Epson HX-40 Model # H401A. I
understand this machines runs off of program-specific rom chips. It has
a chip in the slot under the trap-door, and when I boot it, it comes up
to a pharmacetical company inventory, order, etc., menu. The machines
runs off of 4 AA batteries or a AC adapter. It really is a cute machine,
but I want to know more. In searching the web, I find 1 measly reference
to this machine... yes, 1 (or two), neither of which give any info. on
this machine. It is listed on a guys resume as having experience in
working with it. I do find a lot of information on the well-known Epson
HX-20 --- known as the 1st laptop computer. In finding pictures of that,
this one looks really similar. This one has ports labeled BCP and one
labeled SP on one side, and on the back is the cassette, seriel, and
RS-232C, printer, and power adaptor ports. There is also a 50-pin port
on the opposite side with no label. I guess what I am wondering is if
any of you have some more information on this little guy? No year can be
found on it, but I suspect early 1980s. Does anyone have any other
'chips' for it to insert other software into memory. Are these units
rare? Please let me know any information. If you're interested in it let
me know that to.
Next, I am curious about a Data General One laptop computer I picked up.
Specifically, I need to know what type of power supply it takes, as I
can't find that information anywhere. It says it is ms-dos based, but I
am wondering what dos would run on it. It has 2 3.5" disk drives (Epson
drives), and I am curious as to if it had a hard drive? It has a
full-screen, I would suppose monochrome? Could it display graphics,
etc.? Also, when was it made?
*any* information on the above two items most certainly are welcome, and
would be quite appreciated. Please let me know if you are interested in
getting either one of these as well.
I will post some more very unique items in the next couple of days that
I was lucky enough to get my grubby little hands on....
Thanks in advance,
CORD COSLOR
--
___________________________________________________
| Cord G. Coslor : archive(a)navix.net |\
| Deanna S. Wynn : deannasue(a)navix.net | |
|---------------------------------------------------| |
| http://www.geocities.com/SiliconValley/Vista/4395 | |
|---------------------------------------------------| |
| PO Box 308 - Peru, NE - 68421 - (402) 872- 3272 | |
|___________________________________________________| |
\____________________________________________________\|
How much sense does that make? Isn't it a bit like saying "You can
pay 100,000 for it, or you can pay 10, either is fine with us"? If it
doesn't weigh too much, ship it to the US, I'm sure there are more
customers here (I doubt I'll get much use from it, unless it runs
term and MS Word ;)
>How often do these come up for sale? A Cray, about 6 or 7 years old,
>apparntly, is being sold in Australia. They're asking $100,000, which
>puts it a tad out of my range. :) However, if it isn't sold it will be
>scrapped - I wonder if they will accept a couple of cartons of beer
over
>whatever the scrap offer is?
>
>Anyone want it? :)
>
>Adam.
>
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I pretty much knew it wouldn't work, but hoped that maybe it would
work just like a normal BIOS... anyway, does anyone have that circuit
cellar article? What is "inexpensive"?
>
>> I just downloaded the assembly source to a generic XT bios. It
compiles,
>> but I can't apparently run it from a command line, or boot off a
floppy
>> disk that has the thing rawritten on it.
>
>Um - what are you *expecting* it to do when you run it from the command
>line or from floppy disk?
>
>> Is there a way I COULD do it
>> without getting a ROM burner?
>
>Sure - there are adapters that let you put code into a small CMOS
static
>RAM with an adapter that fits on the ROM socket. One of Steve
Ciarcia's
>early Circuit Cellar articles in _BYTE_ shows how to do this. But if I
>were you I'd just build or buy an EPROM programmer - they're by no
means
>expensive.
>
>Tim.
>
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> I just downloaded the assembly source to a generic XT bios. It compiles,
> but I can't apparently run it from a command line, or boot off a floppy
> disk that has the thing rawritten on it.
A BIOS is linked to run at a preset address, usually F000 (64K Z80) or
F000:0000 (last 64KB segment on an 8086 in real mode). What I have done
when debugging a BIOS is to link it at a lower address (say, 8000:0000),
then load it into memory at that address with a debugger, set the CS segment
register to 8FFF (a true reset puts it at FFFF), then jump to 8FFF:0000
(simulating a reset to FFFF:0000). Since this is an XT I assume you will be
running in real mode, so address translation isn't a problem unless your
machine has some kind of additional address mapping logic.
Of course you can't run the debugger after that as the BIOS will trash all
your vectors. Be sure to modify the BIOS code to stop the memory sizing
test below segment 8000 or you will memory test right over your BIOS image.
Hope this helps, Jack Peacock
I just got an Apple ProFile hard drive. It seems to work, although I don't
have an interface card for it yet.
But, it squeaks. You know, like a water pump on a car before it blows
(that's the pump bearings, BTW). Does anyone have any check-out/maintenance
tips for this drive? The hard drive is labeled "Seagate model ST-506".
Thanks!
Rich Cini/WUGNET
<nospam_rcini(a)msn.com> (remove nospam_ to use)
ClubWin! Charter Member (6)
MCP Windows 95/Windows Networking
============================================
Just curious if I should really keep this rather well designed computer
Its an "Olivetti M24 Personal Computer". I'd never seen an Olivetti
before, which is why I saved it from the scap heap. Now is it scarce or
nice enough to attempt to get running? If not, it becomes my new post box -
rip out the drives and contents, sit it on top of a pole outside the house,
paint the house number on the monitor screen :) Should look good!
Also found, and free for a good home (cover my costs) a great condition box
set of Texas Instruments Professional Computer MS-DOS manuals. I don't but
thought somebody else might want them.
Andrew.
I just downloaded the assembly source to a generic XT bios. It compiles,
but I can't apparently run it from a command line, or boot off a floppy
disk that has the thing rawritten on it. Is there a way I COULD do it
without getting a ROM burner?
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>I have a C-64c and a Commodore brand 1200 modem. Since I still haven't had
>a chance to resolve the problem with my 1541 disk drive, I'd like to
>explore using the modem a bit. Can it be done in BASIC? Meaning, can I
>issue certain BASIC commands to init the modem and dial out? It's been a
>while since I've messed with any Commie machine, and when I did, I couldn't
>afford the "luxury" of a 1200 baud modem. This may be something simple, and
>I'd appreciate any help, even a pointer to info on the internet.
>
I just got my hands on a Kaypro 4 in excellent condition, complete with
software and manuals. However, I cannot seem to get the internal 300 baud
modem working. I have two programs here with it, one is KERMIT for the
Kaypro II CP/M 2.2, and the other is Superterm Version 5. According to the
addendum with the machine, the version of Superterm that I have was
modified for use with the internal modem on the Kaypro 4, however I cannot
seem to get the modem to do anything. Would this modem accept AT commands?
and if not, what commands do I have to send to it in command mode? Any help
would be appreciated.
On a side note, anybody remember the Star Trek basic game? They just don't
make games like that anymore. I'm sitting here with Quake, QuakeII, and a
whole slew of other advanced 3D games on my pentium, but I cannot tear
myself away from playng Star Trek on the Kaypro! (getting my ass kicked,
can't aim the torpedo's worth a damn :)
UHOH! That means that I will have to move the thing! It's against the
wall! With three 74-pound terminals on it, no less! This machine ran
in 1980, when it was last used. Possibly, it has been eaten by the two-
foot long rats that live in our building. To restate what I previously
said, it needs a 220-v power source and I am trying to run it in an
area that only has 110-v plugs.
>[Previously, a load of questions...]
>The CE panel is the Customer Engineer panel. WHile facing the front of
the machine, take a step to your right. Turn left 90 degrees. Take
another step
>right. You should (Depending on your stride) be looking at a small
hinged cover
>about 12" high, on the left side of the machine. Open it. Inside is a
mess of
>switches and lights. This is the CE panel, similar to the frontpanel
of a PDP-11
>or similar mini. WHen the machine is running you can watch the LEDs
flash at
>you.
>
>I'm not sure on the voltage stuff...
>Is this machine running? Are you tyring to get it that way?
>-------
>
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For one thing, what is the CE Panel? The thing is in a corner, with
the end that has the floppy drive on it visible, as well as the side
that has a small power switch on it. I went down to Radio Shack, they
only had 220-110 transformers that could handle up to 40 Watts. I have
a hint this might not be enoug ;) Also, they had 110-220 transformers.
Could I just wire one of those backwards and get the same result?
Wouldn't it be easier to just wire two 110 volt plugs together like
I was told I could try if I like "but I would far better notter"?
IS this indeed like trying to move heat from a cold to a hot object?
How many question marks can the listsevrer handle before crashing?
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> > Possibly. But I'm not convinced. I seem to remember the biggest IBM
> > 3090 system drew about 250kW (I'll have to look that up too!). I
> > imagine a typical system might draw perhaps 50kW.
>
> That is probably for a typical installation. The actual processor is
> nowhere near that value (still enough to make the utility very happy,
> however). A big string of DASDs adds up very fast, especially the power
> sucking IBM disks (why is that? Really big motors)?
I don't know where the figure of 250kW came from. I cannot find it
anywhere.
I have found some figures, though, for indifidual 3090 processor units
_only_, dated 1986 and 1987. While I agree with you in principle,
William, you'll be surprised at some of these.
Figures are electricity consumption in kVA - an upper bound on kW, but
not a useful indicator - and heat output in Btu/h which I have converted
to kW, which should give a lower bound on electrical power requirements.
3090 Model kVA kW Heat
150 (1986) 32 23.2 kW
400 (top of range in 1986) 83.6 61.8 kW
400 with vector coprocessor 97.8 70.6 kW
120E (1987) 29.7 21.4 kW
150E (1987, replaces 150) 30.4 22.1 kW
400E (1987, replaces 400) 79.9 59.6 kW
600E (top of range in 1987) 95.6 71.5 kW
600E with all expansion 134.6 103.6 kW
Note 1986 figures were given with and without vector facility; 1987
figures were given as minimum and maximum values.
These figures are not even for a minimum system - you have to add disk
drives and that awful 400Hz motor generator set - which can consume up
to 7kW in itself.
So, as I said, a typical system based around, say, a model 200 might
consume 50kW, but even that needn't cripple you financially.
Philip.
From: Yowza! <yowza(a)yowza.com>
Subject: GP-IB (was Re: Atari 8-bit Find)
>On Sat, 14 Feb 1998, Larry Anderson & Diane Hare wrote:
>> Remember if you find a hint of something you are collecting at a thrift,
>> look around for other components (i.e. if you find a Commodore IEEE-488
>> cable start looking for PET/B-128 drives, printers, computers, tapes,
>> disks, manuals, etc.)
>Which reminds me: why didn't IEEE-488 ever become a big hit in the
>computer biz? It's been around since the 60's, is standard, has good
>performance, has IC support, can handle a bunch of devices, etc., but it
>became relagated to a niche of scientific instrument control for some
>reason.
Here is an interesting tidbit I found a year or so ago which partially
answers at least Commodore's part of the question:
**QUOTE**
From: brain(a)garnet.msen.com (Jim Brain)
Newsgroups: comp.sys.cbm
Subject: PC's as 64 HD's and the 6522 chip!
Date: 7 Apr 1994 13:48:35 GMT
Right after I posted about hooking a 6522 VIA up to a PC parallel port
to turn the PC into a "char-banger" instead of a "bit-banger", someone
posted that they had thought the 6522 had a problem with the shift
register. The poster also said that Jim Butterfield had alerted him and
others to it.
Well, I have been in correspondence with "The Commodore Man", so I
asked him
to elaborate on the topic. Here is the two responses:
> Yes, it's true. Although I didn't get official confirmation of this
>long after, when a Spectrum article quoted the designers.
> As you know, the first Commodore computers used the IEEE bus to connect to
>peripherals such as disk and printer. I understand that these were available
>only from one source: Belden cables. A couple of years into Commodore's
>computer career, Belden went out of stock on such cables (military contract?
>who knows?). In any case, Commodore were in quite a fix: they made
>computers and disk drives, but couldn't hook 'em together!
> So Tramiel issued the order: "On our next computer, get off that bus.
>Make it a cable anyone can manufacture". And so, starting with the VIC-20
>the serial bus was born. It was intended to be just as fast as the
>IEEE-488 it replaced.
> Technically, the idea was sound: the 6522 VIA chip has a "shift
>register" circuit that, if tickled with the right signals (data and clock)
>will cheerfully collect 8 bits of data without any help from the CPU.
>At that time, it would signal that it had a byte to be collected, and
>the processor would do so, using an automatic handshake built into the
>6522 to trigger the next incoming byte. Things worked in a similar way
>outgoing from the computer, too.
> We early PET/CBM freaks knew, from playing music, that there was something
>wrong with the 6522's shift register: it interfered with other functions.
>The rule was: turn off the music before you start the tape! (The shift
>register was a popular sound generator). But the Commodore engineers,
>who only made the chip, didn't know this. Until they got into final
>checkout of the VIC-20.
> By this time, the VIC-20 board was in manufacture. A new chip could
>be designed in a few months (yes, the silicon guys had application notes
>about the problem, long since), but it was TOO LATE!
> A major software rewrite had to take place that changed the VIC-20
>into a "bit-catcher" rather than a "character-catcher". It called for
>eight times as much work on the part of the CPU; and unlike the shift
>register plan, there was no timing/handshake slack time. The whole
>thing slowed down by a factor of approximately 5 to 6.
> There's more (the follow-on C64 catastrophe), but that's where it
>happened.
--Jim
And the saga continues ...
> When the 64 came out, the problem VIA 6522 chip had been
>replaced by the CIA 6526. This did not have the shift register problem
>which had caused trouble on the VIC-20, and at that time it would have
>been possible to restore plan 1, a fast serial bus. Note that this would
>have called for a redesign of the 1540 disk drive, which also used a VIA.
> As best I can estimate - and an article in the IEEE Spectrum magazine
>supports this - the matter was discussed within Commodore, and it was
>decided that VIC-20 compatibility was more important than disk speed.
>Perhaps the prospect of a 1541 redesign was an important part of the
>decision, since current inventories needed to be taken into account.
> But to keep the Commodore 64 as a "bit-banger", a new problem arose.
>The higher-resolution screen of the 64 (as compared to the VIC-20)
>could not be supported without stopping the CPU every once in a while.
>To be exact: Every 8 screen raster lines (each line of text), the CPU
>had to be put into a WAIT condition for 42 microseconds, so as to allow
>the next line of screen text and color nybbles to be swept into the chip.
>(More time would be needed if sprites were being used).
> But the bits were coming in on the serial bus faster than that: aD
>a bit would come in about every 20 microseconds! So the poor CPU, frozen
>for longer than that, would miss some serial bits completely!
> Commodore's solution was to slow down the serial bus even more.
>That's why the VIC-20 has a faster serial bus than the 64, even though
>the 64 was capable, technically, of running many times faster.
> Fast disk finally came into its own with the Commodore 128.
--Jim
Now someone also told me at one time that they had seen a fastloader
that
same someone said he thought it was odd that the author of the loader
had
credited Commodore with the routines. Well, I can hazard a guess that
the
routines were the ones they had wanted to put in the 6522, but had to
scrap
due to the 6522 problem. Now I have no idea what the problem is/was,
but
I am eager to find out. However, I rescind my plans to build something
around the 6522 until we find out what the problem is.
Jim "Just the Facts" Brain
**END QUOTE**
The 64 and VIC would have had a faster drive if it wern't for the
cables and the chip problems... Probably HP was doing major IEEE-488
sales and it was a strain on the cable manufactuer. IEEE-488 cables
nowadays run from $40-$90 new, of course it is a standard 'get' item on
my mental thrift store shopping list.
--
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Visit our web page at: http://www.goldrush.com/~foxnhare/
Call our Commodore 64 BBS (Silicon Realms 300-2400 baud) at: (209)
754-1363
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On Mon, 16 Feb 1998 15:06:55 -0800 (PST), Tim Shoppa
<shoppa(a)alph02.triumf.ca> wrote:
>>What sort of packs? What commands were you issuing to read them? >>What
OS did you try to read them from? What error message did you get >>when it
failed?
They're RK05 packs, inserted in the DK2: device. I booted from DK0: with
RT-11 v.4 and used "dir dk2:" to read the disk directory. Although I don't
remember the specific error, it's something like "invalid directory."
> Can RSTS/E be used on an 11/34?
>>Most later versions support the 11/34, though some early versions (pre-
>>1977 or so) don't. RSTS/E tends to be quite picky about peripheral
>>configurations that it'll run on.
I have v.6 and v.7.
-------------------------------------------------
Rich Cini/WUGNET
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- ClubWin Charter Member (6)
- MCP Windows 95/Windows Networking
On Mon, 16 Feb 1998 21:50:15 +0000, jpero(a)cgo.wave.ca wrote:
>> does that mean I could just plug one of my old ST-225's or other ST-506
>>type drives intoa ProFile card?
>>>Oh, you can. Still 5mb or 10mb. :)
>>>Remember, all older MFM, ESDI and some early SCSI drives always >>>need
annual or bi yearly LLF job.
Thanks for the info. Now all that I need is an interface card for my
///.
-------------------------------------------------
Rich Cini/WUGNET
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- ClubWin Charter Member (6)
- MCP Windows 95/Windows Networking
On Sun, 15 Feb 1998 17:39:22 -0800, John Rollins <rexstout(a)ptld.uswest.net>
wrote:
>>Sounds like the ProFile card is just an ST-506 hard drive interface. A
>>ST-506 drive is REALLY old. I'm not an expert on the old hard
>>drives/interfaces, so I'll let someone else figure all that out, but I
>>can tell you that it is very old. Does the ProFile need a seperate power
>>cord (does it have it's own ps), or does it get power from the Apple II?
>>And if the ProFile is just an ST-506 interface, does that mean I could
>>just plug one of my old ST-225's or other ST-506 type drives intoa
>>ProFile card?
It's a self-contained drive unit that connects to an interface card on
the Apple // or /// with a 25-pin DB straight-pinned cable. It does have an
Astec power supply built-in. The interface cable to the drive itself reminds
me of a floppy cable (IDC edge connector to IDC header), but I didn't count
the conductors.
I'm assuming that it is a true ST-506 interface, but I don't know for
sure. I also haven't had the time to look the drive up in my ref. materials
to determine its capacity, etc., but I think that it's a 5mb drive.
-------------------------------------------------
Rich Cini/WUGNET
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- ClubWin Charter Member (6)
- MCP Windows 95/Windows Networking
>>Several Cray beasts have found their way into museums, but I am
>>unaware of any TMC machines that have been preserved - and I know of
>>several that have been scrapped...
>
>Several.
>TCM has a CM-1, a CM-2, and a CM-5 by recollection.
In trying to find a home for the Convex I found a collector of
Supercomputers in Adelaide (where I live). He has the CM-2 and CM-5, as
well as something called an Encore Multimax, and is after the Cray but
isn't going to pay the $100,000 (Australian) that is being asked. :) It
looks like I have found a home for the Convex, if only I can work out how
to transport it here.
Adam.
John Higginbotham <higginbo(a)netpath.net> wrote:
>It would be Red Hat linux, and if there's a termcap for the m100, there's
>gotta be one for the c64.
Yes, I know circa 1985 I used the standard Unix termcaps for the M100
and the C-64 over 300 baud links.
>Do you know if anyone makes these cables and sells them? Or, barring that,
>any specific links to the assembly instructions?
Sure, some people on the net try to sell them, but they're easy to
wire if you can find the DIN connector. I did one in a few minutes
after digging for the DIN in the junk box. Worked the first time.
See <http://ftp.funet.fi/pub/cbm/transfer/1541-to-PC/> for more info.
I can't begin to tell you how easy and rewarding it can be to dig
around on the web, following one clue to another. If you entered
"x1541" or "1541 pc" in <http://www.hotbot.com> or any other
search engine, or <http://www.dejanews.com>, I'm sure you'd
quickly find dozens of references.
- John
Jefferson Computer Museum <http://www.threedee.com/jcm>
In a message dated 98-02-16 21:27:14 EST, you write:
<< At 05:39 PM 2/15/98 -0800, you wrote:
>>But, it squeaks. You know, like a water pump on a car before it blows
If that's all that's wrong, try lubing the ground strap/ spindle juncture.
> does that mean I could just
>plug one of my old ST-225's or other ST-506 type drives intoa ProFile card?
Yes, As long as it has more cylinder and heads. You'll have to low level
format after you install it.
>>
hmmm, i have heard only a lisa (or is it an apple ///) that can only LLF a
profile?