>A while ago I promised two people that I would fetch them some IBM PCjr
>power supplies if I ever found them. Well, I found some today. I've got
Incidentally, I built a PSU for my PC-jr last week.
I used a simple 15V AC transformer, no centre tap or anything like that. The
only one I could find was 50VA, which is marginal, but not too bad.
The ends of the secondary go to the outside 2 pins of the PC-jr power
connector. The central pin goes to mains earth and to nothing on the secondary
side at all.
Oh, I put a 3.15A fuse in series with the secondary to protect the transformer.
It works fine. My PC-jr boots, and all PSU outputs (including the -ve one) are
present and correct.
>
>Sam
-tony
You pay UPS for 7 lbs from 93405. Printer only, no interface cable. Was
used with C-64. Untested but looks good.
Check the <a href=http://www.ups.com/using/services/rave/rate.html> UPS
Rate Calculator </a> to figure shipping. And be sure to add about $1
because those quotes are commercial pick-up rates.
Was there some bloke on this discussion who was asking for the Hayes
micro-coupler the other day? I have an extra one if you still need it.
E-mail me.
Sam
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
I have the following Commodore stuff for sale. Discount for more than
one item (you save on shipping too)
VIC-1541 Drive (2 ea) $5 ea
1541 Drive (2 ea) $5 ea
C-64 in orig box w/ps(1 ea) $5
Commodore joysticks (1 pr) $5
Untested C-64 Power Supplies (6 ea) $3 ea
Remember to add shipping to what its worth to you. Use the UPS site:
<a href=http://www.ups.com/using/services/rave/rate.html> UPS Rate
Calculator </a> to figure shipping. And be sure to add $1 because those
quotes are commercial pick-up rates. Drives and C-64s are about 11 lbs
ea. My ZIP is 93405.
I also have a pile of cables and stuff that I haven't look through yet.
Will throw in whatever cables and manuals I can find that go with each
item, no guarantees though. Also, Im pretty sure I ran all these but not
positive. I don't have time to test all this stuff. Sold AS-IS.
Make me an offer on all or some of it! It's going to go one way or
another so if it doesn't sell, I'll give it away for shipping cost. If
that doesn't work it shall return to the thrift store from whence it
came!
A while ago I promised two people that I would fetch them some IBM PCjr
power supplies if I ever found them. Well, I found some today. I've got
two up for grabs. Please e-mail me if you were one of the two people who
inquired about one. If you weren't, e-mail me anyway and I will send
them to you if the other two guys don't respond. To the two guys whose
names I forgot: sorry for forgetting your names!
Sam
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
A-B C-D
< ---+----------+---------+
< 1 | M7606 =============|
< 2 | M7608 =============|
< 3 | M3106 === |
< 4 | M7516YM== |
< ---+----------+---------+
< 5 | M7546====|M7555====|
< 6 |
< 7 |
< 8 |
< 9 |
< 10 |
< 11 |
< 12 |
< ---+----------+---------+
< 13 | | HDCNCTRS
<
Slot 13 bottom is not the HD controller, it's the distribution card. There
should be a 50pin cable bettween the m9058 and the m7555(rqdx3) card.
Pull the m3106 and bump the rest up one with the last one being the m7555.
It shouldn't make a difference but at this point you don't need it to boot.
This will give you a minimal config for the bus. Also make sure the overt
the top cable for the memory is good!
A-B C-D
---+----------+---------+
1 | M7606 =============|
2 | M7608 =============|
3 | M7546 === |
4 | M7555 === |
---+----------+---------+
5 |===Q->====|==Q->====|
6 |====<-Q===|===<-Q===|
7 |===Q->====|===Q->===|
The arrows are added to indicate the qbus grant flow for the bus starting
at row 5.
Allison
Here's an Apple /// for sale. I've seen them go for much cheaper.
Sam
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
---------- Forwarded message ----------
From: sundeck(a)ix.netcom.com(N.J.C.)
Newsgroups: comp.sys.apple2.marketplace
Subject: Apple /// FS
Date: 24 Jul 1997 12:31:32 GMT
one Apple /// with Apple /// monitor and
2 nd drive , some software
$150 plus shipping
sundeck(a)ix.netcom.com or
eflea(a)atlantic.net
--
Sam
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
>Or otherwise stated: What to do when the cost of reviving a rescued
>computer is as much as buying one of the same model?
>
>To explain, I recently rescued a Mac+ (2.5/40) which was being thrown
>out by my employer. When I got it, it would give intermittant Sad Mac
>errors. No problem, I figure I can replace the RAM with some surplus
>PC SIMMs. This fixes the Sad Macs, but after it heats up it dies with
>an "Address Error" bomb. Some board switching points to the motherboard
>(more specifically, the ROMs) as being the fault.
Hmmm... My first thought is to fix the old board :
Since the ROMs work OK when cold, you should be able to make a good copy of
them onto disk. Then blow them into EPROMs, and modify the Mac+ to use said
EPROMs (I believe a very small mod is needed, alas, but I don't know that much
about the Mac+ hardware).
IMHO that's not piracy - it's simply using a backup copy on new media since the
original media failed.
However, a pair of EPROMs would probably cost about $15, so that's no solution
either.
In the past I _have_ spent more on repairing/restoring a machine than buying a
new one would cost. The reason is simple - I enjoy doing said repairs. A hobby
doesn't have to make financial sense.
[...]
>Thanks in advance... <<<John>>>
>
>P.S. Anybody also know of a source for a LaserWriter Plus logic board, too?
What's wrong with the old one. From the pictures I've seen of said board
(Sorry, I don't have one, only a CX-VDO (same engine, but with no logic board)
and a Laserwriter 2NT), it looks to be mostly standard components, and should
be repairable.
-tony
Hey Marvin:
I was wondering if any of your recent Atari acquisitions are for sale. I
am especially interested on a good deal on a drive and some software...
PLEASE let me know..
CORD
//*=====================================================================++
|| Cord G. Coslor P.O. Box 308 - 1300 3rd St. Apt "M1" -- Peru, NE ||
|| (402) 872- 3272 coslor(a)bobcat.peru.edu 68421-0308 ||
|| Classic computer software and hardware collector ||
|| Autograph collector ||
++=====================================================================*//
On Wed, 31 Dec 1969, Marvin wrote:
> I went to the TRW Swap Meet today down in Los Angeles and managed to get
> a few things. A guy was selling a fairly complete Aquarius that
> included the cassette recorder, printer/plotter, expansion chassis, a
> 32K expansion unit, some games, and documentation. He was asking $25
> but took $20 for the lot. Also picked up an Epson PX-8 portable and an
> NEC 8201 portable (sure hope those numbers are correct as I am going
> from memory) for $25 lot. The "best" deal was a guy walking around with
> a sign that said "Free Atari". Of course, that got my attention and I
> picked the 5 boxes of stuff up. Haven't checked it all out yet, but
> there were supposed to be three Atari 400 computers, Three disk drive
> units, an 850 interface, a modem, docs, and some other stuff. Saw a guy
> offering S-100 cards (mostly memory and HD cards) at $5 each. When I
> asked why he was asking so much, he replied they weren't for sale. I
> hadn't heard of the manufacturer of those particular cards, and figured
> if schematics were available, they might be worth what he was asking.
>
> I met a friend of mine whom I hadn't seen for about a year. Turns out
> he built one of the Altair computers I have and was one of the first
> factory reps for Vector Graphic. Apparently among the many people he
> called on was a place up around Berkeley with a name like Kentucky Fried
> Computers (or something similar) and that was where Northstar Computers
> got started. Apparently, he has some of the early SCCS stuff along with
> most of the Vector Graphic docs, etc. so with any luck, I'll end up with
> that stuff too.
>
>
