> On 21 Jul 97 at 10:15, Greg Mast wrote:
> > Apple III External Floppy Drive **PHOTO**
> I noticed the current bid for this was $103.50. I'd love to hear if
> you actually collect that much for it. I can't believe someone
> actually wants it THAT bad.
Me too. I figured $20-$30. But who am I to complain? But like they say,
talk is cheap. We'll see if they pull through. I had a Radio Shack hard
drive that was bid up to $150 a while back. Both high bidders flaked and
I relisted it and sold it for $30. Go figure.
On the other hand, I had a garage sale last weekend. Not one person
interested in the piles of Apple, Commodore, Atari stuff. I mean, if you
guys aren't going to garage sales to buy stuff, you're missing a lot of
deals. Most of the stuff at the Goodwill has an old garage sale sticker
on it.
> I.E Making a new ROM. Well, I do have the IBM PC manual that has the ROM
> unassembled in it... I thought those panels worked by playing with the
> lines on the CPU. Sounds like more work than I have time to do now. I do
> know that E11 lets you pull this off via the paralell port. It would be a
> neat trick, if I had time to work at it.
They do work by playing with the lines on the CPU. However, the 8088 (and
most microprocessors) do not allow you to get to the internal registers
>from the bus. It works on the PDP-11 because the registers have a bus
address; i.e., you can DMA into registers.
This stopped being possible on the microprocessor implementations of the
the PDP-11, which is where MicroODT fills in.
Roger ivie
ivie(a)cc.usu.edu
Quick question:
10base2 (cheapernet) thin coax eithernet: What is the minimum cable length?
Everything I have has the maximum and I remember there is a minimim.
Allison
Minimum is 1 meter, max is 185m 25ohm terminator at each in, 48 drops per
segment.
----------
> From: Allison J Parent <allisonp(a)world.std.com>
> To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
> Subject: 10base2
> Date: Monday, July 28, 1997 1:00 PM
>
> Quick question:
>
> 10base2 (cheapernet) thin coax eithernet: What is the minimum cable
length?
> Everything I have has the maximum and I remember there is a minimim.
>
> Allison
<but then again, I do have a PC-XT motherboard to waste... It would be
<interesting... Is it possible? It would score high on the nerdity
<scale...
The 8088 would be difficult to make a hardware style front pannel like the
PDP-8e or 11/70s had but a software front pannel is doable with a spare
parallel port or homebrew IO card. It would have to ahve some software to
dump registers to lights based on switchs, load registers from switches
(at least 16 of them for data/addresses) also other things like single
stepping and single instruction would have to be handled. The other
possibility is an embedded ODT like the 11/03, 11/23 or later q-bus PDP-11s
have. IT allows memory display, changing locations, halting, running from
an address and display/load registers from a terminal(console).
Allison
On Sun, 27 Jul 1997 14:13:00 -0500 (CDT), Brett <danjo(a)xnet.com> wrote:
>>Unless someone can verify the legal status of the copyrights on the ROMs.
>>I am a little busy setting up Rescue trips to dig much further into THAT
>>moras of mumbo-jumbo.
I got my copies of the ROM images off of ftp.funet.fi. It seems that this
Finland ftp site has boat loads of Commodore software, including the ROM
images to be used for emulators (I used mine for the PC-VIC emulator and as a
known-good ROM image to compare my Kernel assemblies with).
If my wife really understood what I was doing with the VIC Kernel project,
she'd probably say "Why??" too. But, it's really more of saying to myself that
I reverse-engineered object-code into a recompilable file and that I learned
something than anything else. Since I can't yet really own the source code, I
made my own <g>.
-------------------------------------------------
Rich Cini/WUGNET
e-mail: rcini(a)msn.com
- ClubWin Charter Member (6)
- MCPS Windows 95/Netowrking
Message text written by INTERNET:classiccmp@u.washington.edu
>>The 8-pin cable for the Plus/4 is exactly the same as the 8-pin cable for
the (more common) Commodore 64 or 128. <<
>> Finally, if you want to hack one together, I can provide the pinout.<<
>I'd like the Pinout!!<
First, the Commodore 8-pin DIN connector is the unusual one; the "Hershman"
or something. This means that pins 7 and 8 are not in the same positions
as on the common 8-pin DIN connector. (Look at the port to confirm pin
placement; I'm not sure the chart below is correct.) One easy solution
here is to cut pins 7 and 8 off a common 8-pin connector; they aren't
needed for anything. Or as explained below, you can use a common 5-pin DIN
connector; but, if you're hooking to a separated color composite monitor,
your picture won't be QUITE as sharp.
Looking at the port on the back of the computer, OR at the BACK of the DIN
plug (the side you'll attach the wires to), the pinout is:
8 7
3 6 1
5 4
2
Connections are:
1 Luminance
2 GRND
3 Audio
4 Color Composite
5 Audio In (not used)
6 Chroma
7 NC
8 NC
Hook up pin 3 for audio in all cases. As to video, if you're using a
separated color composite monitor, do separate RCA plugs for 1 and 6. If
you're using a color composite monitor with the single input, use 4. If
you have monochrome, use 1. If you want to use a 5-pin DIN connector with
a separated color composite monitor, do separate RCA plugs for pins 1 and
4.
Message text written by INTERNET:classiccmp@u.washington.edu
>> >Does anyone have a Commodore Plus/4 video cable for sale or trade?<<<
>> (the early models had a 5-pin port) will also work on a Plus/4. In
fact, I think most home computer manufacturers (Atari, TI) used 5-pin
cables with
the composite, sound and ground on the same pins, so you could try one of<<
>I have a TI/994a converter box...will this work?<
The TI 99/4a doesn't have an internal RF modulator; that's what the box
does. So even on a TI, you only need the box (and can only use the box) if
you're hooking to a TV. The Plus/4 has an internal RF modulator, so if you
want to hook to a TV all you need is an RCA-RCA cable and an ordinary
game/TV switch. I *assumed* (and we all know what happens when we "ass u
me") that when you said "video cable", you meant a monitor cable. As I
said, it's the same as the C64 and some other computers use, so it
shouldn't be all that rare. I'm sure anybody could sell you one (including
me) for $5 and postage.
Gil Parrish
107765.1161(a)compuserve.com
On Fri, 25 Jul 1997 15:51:33 -0400, Gil Parrish wrote:
> For the last two years, I have been working on making a
recompilable version of the VIC-20 Kernel ROM.<
>>OK, I'm not afraid to ask the amateur question: Why?
>>I'd love to see someone with good programming skills write some
>>sophisticated software for the VIC-20, likely requiring at least a 16K
>>expander or something. If your project will help lead to that, I'm all
>>for it.
Well, Gil, I used it as a learning project. When I first got my VIC-20 in
1981/2, I was in junior high school. I programmed mostly in BASIC, and did a
little ML. After I graduated, I got involved in too many other things: my
fraternity, my wife, a job, the Mac, and then Windows hacking. When I bought
my house two years ago, I moved all of my old machines and started playing
with them again.
So...I wanted to re-learn 6502 ML and the VIC/CBM architecture. I thought
that documenting the VIC Kernel (some thing that I had never seen in print)
would be a nice project. Also, I thought that it sould be good to have
recompilable Kernel code, if I ever needed to recompile it. Documenting the
Kernel enables the programmer to understand what's in the "black box." This is
why AndrewShulman and Matt Pietrek have made a fortune in books detailing the
internals of Windows.
------------------------
Rich Cini/WUGNET
rcini(a)msn.com
- ClubWin Charter Member (6)
- MCPS Windows 95/Networking
I found I sent this email to Sam instead of mailing to the listserver so
I am just reposting in case anyone is interested.
> Now you did it, I had to go back and look at all the stuff again, darn
>
> :). Everything below has the Aquarius name and logo on it. The
> 4-color
> printer turned out to be Radofin Electronics. This is actually what
> came in the lot: Prices are from the Crimac, Inc. Aquarius Order form
>
> before the discount. The only date is on the order form and states
> that
> 10% can be deducted if mailed by January 31, 1985. The prices are
> from
> that flyer as obtained from a copy of the original order. The next
> flyer from Crimac showed a price increase of about 20%. Pricing is
> qualified when the model number on the box did not match the order.
>
> Mattel Electronics Aquarius
> Ser # RH0115319
> Model # 5931
> Missing original box and packaging, but has docs
> No Price listed
>
> Mattel Electronics Data Recorder Ser # RH000151
> Added label - Mattel Electronics, Mfg by Radofin
> Model # 4394
> Price - $31.95 for Model # 4394R
>
> Mattel Electronics Mini Expander Ser # RH0109348
> Model # 4063
> Price - $43.95 for Model # 4063R
>
> Radofin Electronics 4-Color Printer Ser # RH0500203
> No indication of mfg on printer, only Radofin on box
> Missing printer cable
> Model # 4615R
> Price - $109.00
>
> Mattel Electronics Space Speller Cartridge
> Only Mattel label on box is "(c) Mattel Electronics, Inc. 1983"
> Model # GMN0014
> Price - $19.95 for Model 4682R
>
> Mattel Electonics FileForm Cartridge
> Model # 4177
> Price - $29.95 for Model 4177R
>
> Radofin Electronics 32K Memory Module
> Model # 4217R
> Price - $74.95
