. It's 20 years since
the site went live!
Terry Stewart (Tez)
>>On Apr 1, 2019, at 7:11 PM, Kevin Parker via cctalk
wrote:
>>
>>This will mostly interest TRS-80 enthusiasts on this list.
>>
>> Check it out at theretrosearch.com
>>
>Thank you for this, Kevin!
This is awesome Kevin!
Terry
Hi,
Merry Xmas and Happy New Year (or Happy Holidays if that is your flavour),
Just to note to those interested in the Exidy Sorcerer. I've added 18 more
programs to the Sorcerer archive at
https://www.classic-computers.org.nz/blog/2017-01-23-software-for-real-sorcerers.htm
. To see what they
This won't be of interest to everyone, but if you want to hear what it was
like to open and run a microcomputer store in New Zealand back in the early
1980s, it's captured here.
https://www.classic-computers.org.nz/blog/2018-08-23-viscount-electronics.htm
Terry (Tez)
Just my experience, I once did a trial where I took two identical 5,25
inch disks of the same batch from the same manufacturer. These were clean
disks which both formatted and verified just fine, but I wanted to see if
IPA did indeed damage the disk.
One I swabbed one with 75% IPA, the other
Hi,
The PAL vrs NTSC TV standard complicated things when collecting home
computers from other countries.
In New Zealand we are on PAL. PAL Atari 800s are rarer in the world that
NTSC ones. That being the case I recently settled on an NTSC one for my
collection. Hooking it up to a couple of my
>Sure. Neither would I. But how is this relevant to the CHWiki question?
>> If I had to go to that extent of writing it as a robust, referenced,
>> refereed, definitive technical article, I probably wouldn't bother.
If I was writing an article as a contributor for a reference wiki, I
wouldn't
Given that my article started this discussion, I should add my 2 cents
worth.
I’ll continue to do what I’m doing rather than putting this stuff on CHWiki.
Grant’s motivations and explanations for posting on his site are pretty
much the same as mine. I document these things largely for myself as
>That link mentions ExittoDOS.pif, and searches for it turn up related
information about dosstart.bat.
>I'd suggest digging around for them and some web searches.
Hmm..interesting.
>From a brief search and a test it seems using these files (or at least ones
similar to those described) may have
>I recall using these drivers several years ago.
>As I recall, the problem is that they're not amenable to hot-swapping.
>That is, is you're using a USB flash drive with them, there was no code
>that allowed you to remove the drive and substitute another without
>rebooting.
>Has this situation
I needed an MS-DOS 7.1 environment to give me FAT 32 hence the
config.sys "menu" system.
Terry (Tez)
On Thu, Feb 8, 2018 at 4:20 PM, Grant Taylor via cctalk <
cctalk@classiccmp.org> wrote:
> On 02/06/2018 12:58 PM, Terry Stewart via cctalk wrote:
>
>> T
On Thu, Feb 8, 2018 at 9:28 AM, Curious Marc wrote:
> Thanks Terry, I need to get my DOS7.1/Win98 Dolch to speak USB, that will
> be helpful, particularly the DOS portion. I got my Win98 networked to Win7,
> it's not that hard *once you know* and works really well. You
The title might suggest to topic is not vintage, but the reason I did this
myself was to facilitate classic computer disk imaging.
I’ve recently given USB drive capability to the MS-DOS 7.1 environment in a
Windows 98SE computer I use for the purpose above. It was a bit of work
configuring the
>
>
> But, you have to tread very carefully. Because SOMETIMES [now rarely],
> they could mean the PRE-5150 definition where "IBM compatible" meant
> 3740/SSSD 8" with 128 byte sectors.
> 5150 really was a danger to itself and/or others; it totally destroyed the
> meaning ot "IBM compatible"
>but dbit.com offers an adapter called an
>FDADAP that
>lets you connect a 50 pin 8" disk to the PC controller. I have a couple
>and they work great.
I second that. I've got one and works just as it should.
Terry (Tez)
>
>
> DOS/Windoze will have absolutely no idea how to understand what is on the
> disk.
>
> Makes me thinks of the time a few months ago when a lab on our campus
wanted me to read some 8 inch disks in the archives for them. The IT
manager said "I think they are IBM-compatible" (and by that he
Hi folks,
On the weekend I rescued some old software. It gave me an excuse to get my
first micro out of its box and stretch its legs.
Accounting packages hardly set the world alight but being a Dick Smith
release for the System 80, it does have its place in Australasian computer
history.
Hi,
My apologies for cross-posting. I’m putting this on a few of the forums
I have a third party TRS-80 Model 1 expansion unit that I used with my
System 80 when I first got disk drives. I’ve decided I should add some
pics and info to the System 80 website as I know they were used here in
It looks very much like the Vic-20 one I have.
Terry (Tez)
>
> >IBM service manuals (certainly for PCs, PS/2s etc) did not normally
> contain
> >schematics. They were for repairs at the FRU (Field Replaceable Unit)
> level,
> >which is probably the complete monitor!.
>
I think you are right. Thanks Tony. It might have to remain an ornament.
Terry
(Note: Also posted to VCF)
Hi Guys,
It's a long shot but I’m searching for a manual, which hopefully someone
has scanned somewhere.
In my latest “check-my-gear-works” audit, an IBM PS/2 monitor failed. It
worked initially although brightness and contrast needed to be almost fully
up to see
?Anadisk tells me the disks are Single Sided, Single Density.
> It can see ID marks as it tracks a disk but that is all. It can't see
any data.
>Could be an RX02 disk as people say
Oh, and sector size is 128 bytes.
On Sat, May 6, 2017 at 9:58 AM, Terry Stewart <te...@webweav
>In case not everyone noticed, but Terry's already given up on this
Lol, true. The disks will be given back on Monday. It's no big deal. The
owners can decided what they want to do. Even if I can't read it the
disks, however, pondering just what the format might be is fun. I'm
certainly
>First if they are DEC its one of two formats either FM aka RX01 or FM2
>aka RX02.
>(..an in-depth explanation)
>How do I know. I have PDP-8, PDP11 (with RX02) and VAX (qbus uVAX,
>uVAX2000, and 3100 family).
>I used to and still do exchange between RT-11 and CP/M using RX01 mode
>and a CP/M
>The 'RX02' format used by PUTR is actually IBM System 34 format,
>since DEC's 8" DD disks use a strange combination of SD headers
>with non-standard ID marks, and DD data fields, that can't be
>accessed with a standard PC FDC regardless of the software used."
Right. It's definitely a
cctalk wrote:
>
> > On 5/4/2017 6:16 PM, Terry Stewart via cctalk wrote:
> >>> If these are from a VAX, could they be microcode disks for a
> >>> 11/780?
> >> There was a RX01 attached via a LSI-11 as console.
> >
> > And yet, if there were an RX0
>And yet, if there were an RX02 somewhere on this VAX, I don't believe
you'd be able to read them at all... RX02 seeming more likely with a VAX.
Interestingly PUTR, does seem to accommodate this, and the kind of system I
have set up (i.e. 1.2 MB 5.25 inch in CMOS even though it's an 8 inch
n ODS2.
>
> Jerry Weiss
> j...@ieee.org
>
>
> > On May 4, 2017, at 4:41 PM, Terry Stewart via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > Hi guys,
> >
> > Just tying up some unfinished business. Right at the beginning of this
> > th
>Is your 8 inch setup capable of FM/single density?
>I think that Dave has a utility to test that.
Yes, quite capable. It passes Dave's test and I have read/written in
single density when archiving other stuff. Archiving my FM/single density
POLY and Panasonic stuff was no problem.
>Does your system handle single density? (some FDCs do; some don't)
Oh, yes it does.
>Using IMD, or other tools, can you determine the density, bytes per
sector, and sectors per track of the disks (try at least 2)
>Also, is the data recorded single sided, or both sides?
>If you can read it with IMD, then you can start wading through content
within sectors to get more clues about
Hi guys,
Just tying up some unfinished business. Right at the beginning of this
thread I said...
>Guys in the building next door to me (a Science lab) have found some 8
inch floppy disks.
>They want to see what’s on them, or at least to archive them.
>They have no idea what machine these disks
>If you can find an old registered copy of FORMATQM, it allowed very
>flexible formatting. So, you could format a DMF floppy by defining a
>format in the FORMATS.CFG file thus:
Reminds me of NEWDOS/80 V2 on the TRS-80 Mod 1/III. The PDRIVE command let
you define your very own disk format!
No
>>It may also be that is just doesn't support 77 and can only do 80 tracks.
>I don't think it is this. I can format it fine with 77 tracks using 22DSK
and IMD. It has no problem reading or >writing to 77 track formatted disks.
Oh sorry Dwight, I thought you meant the drive here. You mean
>It may also be that is just doesn't support 77 and can only do 80 tracks.
I don't think it is this. I can format it fine with 77 tracks using 22DSK
and IMD. It has no problem reading or writing to 77 track formatted disks.
Terry
>Here's a writeup for those interested:
>http://www.classic-computers.org.nz/blog/2017-04-15-
adventures-with-an-8-inch-disk-drive-part1.htm
One thing in this project puzzled me. Initially when I was testing the
drive I tried to format it for 77-tracks. I used the command FORMAT B: /u
/T:77
Hi,
Just an update on this. I still haven't got those 8' floppies of unknown
origin to play with but I HAVE made a lot of progress with my own disks.
Thanks to everyone who gave me help with this.
Here's a writeup for those interested:
Re NEC 8201a...
This is a machine I have a lot if fondness for. Wrote many article
drafts and crunched a lot of numbers on that little unit.
Terry (Tez)
>I'll add one more note that an 8" drive supports 77 tracks/cylinders,
>where a 5.25" high-density drive supports 80. So be careful.
Noted. Everything is now ready waiting for those bits and pieces to arrive
from the U.S.
Last night I spent some time going deeper into IMD118, 22DISK and
>For what it's worth, unless you're intent on *writing* 8" single-density
>floppies on the PC, the interconnect between the 8" drive 50-conductor
>cable and the PC 34-conductor one is pretty straightforward. You don't
>need a FDADAP board for that, although it's very convenient.
Yes, and I'm all
>Let's start with determining the hardware aspects to see whether Terry's
machines are capable of reading the disks.
Yes, this is the first step for me. Last night I pulled out an MS-DOS 486
that seems capable. It can read/write single density according to TESTFDC.
This is the machine I'll use.
gt; >
> >> On 03/22/2017 08:39 PM, Terry Stewart via cctalk wrote:
> >>
> >> Chuck, in the highly likely event of the formats NOT being common
> >> CP/M or DOS ones (i.e. ones I could probably manage), I'll give these
> >> guys your email (-:
> >
&
Thanks Guys,
Now I'm intimidated (-:
Just kiddingthat's useful stuff Fred. Thanks for taking the time to
type all that out.
I'll give it a go...and see what I can see. If anything it's a good excuse
for me to wire the drive up. I'd like to image those Panasonic disks one
day for
Hi,
I’ve posted this to the VCF too…apologies for cross-posting.
I’d be grateful for any guidance or comments anyone could give me on this
problem.
Guys in the building next door to me (a Science lab) have found some 8 inch
floppy disks. They want to see what’s on them, or at least to
I've been scanning some user group newsletters. Reading them today reveals
just how important they were for orphan machines home computers like the
EACA Colour Genie. Even if you're not interested in that model, they are
worth a look as they do reflect the "user club" scene of the day. I'm
I've never seen one in a film but one did appear in the New Zealand comedy
"Flight of the Conchords" running New Zealand Government Internet 1.1 (:
https://youtu.be/M-vNLCiJlng
Terry (Tez)
On Sat, Feb 25, 2017 at 8:46 PM, Eric Smith wrote:
> Anyone else notice it in _John
For anyone who has a newly acquired an Exidy Sorcerer, this page might be
helpful.
http://www.classic-computers.org.nz/blog/2017-01-23-software-for-real-sorcerers.htm
Terry (Tez)
I find generally I haven't paid too much for the gear I've got.
However, it's not the initial payment, it's the shipping (huge when your
talking about New Zealand from anywhere), and then the bits and pieces you
might have to buy to repair/restore the said item. These two incidentals
often cost
A few months ago I picked up some Polycorp Polys, a computer designed
specifically for the educational market in New Zealand. One worked and one
didn't. The latter is now fixed. As usual I've written it up with lots of
pictures. If anyone is interested you can read about it here.
Yes, happy New Year's everyone.
2017 is the year where I'll give my 60+ computers a health check. For most
the last time this happened was 2015. Not a comprehensive test, but a
switch on, check the video looks ok and is stable, PEEK/POKE the RAM, make
sure all the keys work and storage media is
Over this Xmas break I've grabbed some time to add a few bits and pieces to
my Dick Smith System 80 website. Some on the list might find this stuff
interesting, hence the post.
For those who might not know, Dick Smith was a colourful Australian
entrepreneur (and helicopter pilot), who pioneered a
Hi,
Please forgive me if this OSI document is already on the web somewhere. I
looked but couldn't find it. I have a copy so I scanned it. It can be
downloaded at:
http://www.classic-computers.org.nz/blog/2016-12-25-OSI-CP1-technical-report.htm
Feel free to link to it, or place it in other OSI
On 24/12/2016 8:32 AM, "Fred Cisin" wrote:
NO source is completely reliable.
>>
> On Fri, 23 Dec 2016, allison wrote:
Most number and data I see to day in the popular media is just plain wrong.
>
particularly on anything like this.
Surely, there must have been some
>
> >Oh yes, the styling is clearly very similar. I like the built-in tape
> drive. Do you think that was likely inspired by the Commodore Pet?
>
It could have been. I think EACA were looking at something people could
just pick up, take home and use without extra cables and "other bits".
This is
>I bought the lovely SOL-20 system yesterday. Picture:
>https://twitter.com/nf6x/status/790631315695513600
Lovely. I'm sure the sloping wood-(veener) sided case design of the Dick
Smith System 80 was inspired by the SOL.
Here is some I wrote some time ago on my experiences with vintage viruses.
Bear in mind it's a narrative (and hence somewhat long-winded and rambling)
but anyway..here it is for anyone interested...
http://www.classic-computers.org.nz/blog/2009-08-30-vintage-viruses.htm
Terry (Tez)
> I used to work for AVG; I can ask if you like.
My copy of AVG detected the stoned virus on an old floppy on my WinXP
machine a couple of years ago.
Terry (Tez)
Yes, some things I've enjoy about the hobby is..
1. Admiring the "design" aspect of machines back in those days (all unique
and all different) and experiencing them hands-on
2. Learning about the machines, their origins and purpose (from reading,
watching videos and hands on) and thereby
> wrote:
>
> > Cool system.
> >
> > Bill Degnan
> > twitter: billdeg
> > vintagecomputer.net
> > On Oct 8, 2016 5:33 AM, "Terry Stewart" <te...@webweavers.co.nz> wrote:
> >
> > > Hi guys,
> > >
> >
Hi guys,
In case anyone is interested...
http://www.classic-computers.org.nz/blog/2016-10-9-poly-acquisition.htm
This could have been the BBC of New Zealand schools... (-:
Terry (Tez)
BTW, while we discussing the QX-10 I'd love to hear from anyone that has
any games which show off its nice green-screen graphics.
Terry (Tez)
ter the CMOS parameters each time I drag it out. (:
Cheers
Terry (Tez)
On Mon, Jul 18, 2016 at 9:52 AM, Hagstrom, Paul <hagst...@bu.edu> wrote:
>
> > On Jul 17, 2016, at 4:57 PM, Terry Stewart <te...@webweavers.co.nz>
> wrote:
> >
> >> Anyone here successf
>Anyone here successfully replaced the battery?
Hi Paul,
As I mentioned, I did try a standard Lithium battery after disabling the
recharging circuit. The machine just would not fire up boot. I haven't
tried a NiMH or Lithium ion rechargeable though. I'd be interested to know
if these work.
Hi Jules
I found removing my QX-10's battery stopped the machines working. I tried
replacing it with a lithium battery after disabling the recharging circuit
but that didn't work either.
The old battery doesn't show any signs of leaking so I just left it in
there. I check all my machines with
In case anyone is interested:
https://youtu.be/JrBqqL6VS6M
Terry (Tez)
>To this day, I still use "joe" as my all-around text editor under Linux
>and BSD. It uses mostly WS key conventions.
I remember using "Runoff" (for formatting text) and "Junior" (full screen
editor) on a PRIME. Then there was "Mince" which I think was a "Junior"
port to the IBM-PC?
Terry
My classic/vintage computer activity has taken a back seat lately but I did
find a machine I had on the "classic" list for some time. It's now part of
the collection.
http://www.classic-computers.org.nz/collection/imac.htm
Some would say this is not vintage, classic or collectible (and so
Yes, sometimes these things are thrown away in ignorance. Before I got
into the hobby I junked a 40 track, SS Tandon drive because I figured
something had broken. Now I know more, I'm sure it was just dirty heads
from using degraded disks. Something a minute or two with a wet q-tip
would have
>Over here you have rows and rows of beautiful old cars shining in the sun
(of course at VCF the equipment is running, not just sitting there!),
>and over on the other side you've got people selling stuff. These shows
appeal to a much wider audience than just the people who actually buy
antique
>It does for me.
>www.vintage-computer.com/vcforum/ >>
http://www.vcfed.org/forum/activity.php
Yes, me too. My experience of the whole thing was a seamless one. I'm
redirected from my old bookmarked link and everything works just as it did.
Terry (Tez)
Sometimes capability is already built in but not widely known or
publicized. Sometimes all it needs is a jumper!
http://www.classic-computers.org.nz/blog/2016-01-12-composite-video-for-bbc.htm
Terry (Tez)
>I wonder how it could take them three months to figure something out.
Maybe Chuck can comment.
Yes, I would have thought an old MSDOS machine with a 360k 5.25 inch floppy
drive plus Chuck's 22DISK program and the job could have been done in a
day? Might be more too it than it seems maybe...
at 10:03 AM, peter <pe...@rittwage.com> wrote:
> On 2016-01-05 15:56, Terry Stewart wrote:
>
>> I wonder how it could take them three months to figure something out.
>>>
>> Maybe Chuck can comment.
>>
>> Yes, I would have thought an old MSDOS machine
On 3/01/2016 2:50 pm, "drlegendre ." wrote:
>
> Thanks Terry, fair enough. =)
>
> Has it been done with the ubiquitous 2NA? That one is probably in
> everybody's kit.. it might be even more common than the 3904
>
> Wondering.. is there a way to re-purpose that Chan. 3/4
Going through and testing the collection over this Xmas period also prods
me into doing mods I've procrastinated about. A very simple mod but here
is a write up for anyone who is interested...
http://www.classic-computers.org.nz/blog/2016-01-03-composite-video-for-zx81.htm
Terry (Tez)
On 3/01/2016 12:48 pm, "drlegendre ." wrote:
>
> Which type of transistor did you use for the mod? I don't see that in the
> writeup.. though I could well be missing it.
>
> Linked article says only "simple NPN"
Good point. I'll have to mention it. It was just a common
Making my junk look less like junk. Nothing groundbreaking for the
engineers in this group but may be of interest to those
voyeurs/nostalgerists that like looking at close-ups of the keycaps...or
not...
http://www.classic-computers.org.nz/blog/2015-12-27-appleiIIe-plantinum-keycap-replacement.htm
Yes Merry Christmas from down under!
Terry (tez)
On 27/12/2015 5:37 am, "Jon Elson" wrote:
> Yes, I also want to wish everybody, and Jay, especially, a merry Christmas
> and a happy new year!
>
> Jon
>
Bos" <hp-...@xs4all.nl> escreveu:
>
> >
> >
> > > -Oorspronkelijk bericht-----
> > > Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Terry
> Stewart
> > > Verzonden: dinsdag 22 december 2015 21:50
> > > Aan: General Discussion: On-Topi
Hi,
I've written up my recent third Apple II repair, this time an Apple IIe.
http://www.classic-computers.org.nz/blog/2015-12-22-appleiIIe-no-video.htm
One interesting aspect of this repair is that piggy-backing a logic chip
helped confirm a faulty one. I'd only ever used this technique with
For anyone interested, here's another repair writeup. I didn't keep as good
a notes as I should have on this one and the memory (my memory!) is of
little help. If I'm going write these things up I really should do it
straight afterwards! Anyway, the board lives now. It's something I could
never
Speaking of Schrodinger's feline, here are details of my recent Apple II+
repair for those who might be interested:
http://www.classic-computers.org.nz/blog/2015-11-29-more-repairs-to-my-appleII+.htm
Terry (Tez)
:20 AM, jwsmobile <j...@jwsss.com> wrote:
>
> On 11/30/2015 12:18 PM, Terry Stewart wrote:
>
>> Speaking of Schrodinger's feline, here are details of my recent Apple II+
>> repair for those who might be interested:
>>
>> http://www.classic-computers.org.nz/blo
asurement. It might have been
enough to force a connection in the socket.
Terry (Tez)
On Tue, Dec 1, 2015 at 12:22 PM, Terry Stewart <te...@webweavers.co.nz>
wrote:
> Thanks for those comments Jim, Yes, something to think about.
>
> Peter Coghlan dropped me a note privately, say
This self-satirizing flow diagram reflecting my experiences testing
computers in my collection may (or may not) amuse some on this forum. I'm
sure at least some can relate to the scenarios though...
http://www.classic-computers.org.nz/blog/2015-11-28-computer-collectors-testing-flowchart.htm
>As time goes on more computers become vintage.
...as do their owners... (:
Terry (Tez)
On Thu, Oct 15, 2015 at 8:49 AM, Andrew Burton
wrote:
>
>
> - Original Message -
> From: "ben"
> To:
> Sent: Wednesday,
More Amstrad restoration, for those who might be interested.
http://www.classic-computers.org.nz/blog/2015-10-08-amstrad-fd1-adventure.htm
Terry (Tez)
It's a busy life nowadays but never too busy to kit out a newly-acquired
Amstrad CPC6128.
http://www.classic-computers.org.nz/blog/2015-09-24-amstrad6128-acquire-fix-and-stockup.htm
for those who might be interested.
It's the first time I've played with those 3 inch disks.
Tez
Has anyone tried ditching the peroxide and simply gone to using a solution
of sodium percarbonate (e.g. Oxyclean)?
Cheap and pretty shelf-stable in the powder form
Yes, I have Chuck.
http://www.classic-computers.org.nz/blog/2011-01-21-deyellowing-with-oxy-only.htm
Sometimes it doesn't turn out
I've got this hazy memory saying that the boot area (or possibly just the
first track?) of the 'DD' CP/M disk might still be FM, though, even
though the rest of the disk isn't, and so it needs a FM-capable controller
to write out an image. Maybe I'm mixing that up with a different system,
though..
On Fri, Jul 3, 2015 at 10:26 AM, Terry Stewart te...@webweavers.co.nz
wrote:
Hi,
I'm engaged in a Retrochallenge project where I'm recoding my
classic-computers.org.nz site to make it suitable for mobile platforms.
I want to modernise the code as well, making it as close to HTML5 standard
It loads up fine using Mozilla/5.0 or SWB V1.1-12 based on Seamonkey
1.1.12 (or
...snip...
Looks grand in Lynx too. Highlighting IBM XT and pressing enter
downloads
the picture and displays it using XV as expected.
Great, thanks Peter.
--
Well,
Thanks for all those replies, and feedback on what the test page looked
like on various devices. Much appreciated.
I see there are various views as expected. I guess it depends on what I
want the website to do in the end. One of the reasons I'm doing this is
more to make sure the pages are ok
Hi,
I'm engaged in a Retrochallenge project where I'm recoding my
classic-computers.org.nz site to make it suitable for mobile platforms. I
want to modernise the code as well, making it as close to HTML5 standard as
I can
The RetroChallenge blog site is here.
That is neat where can we get one!?
You can order there here:
http://lotharek.pl/product.php?pid=63
Terry (Tez)
On Sun, Jun 14, 2015 at 2:54 PM, couryho...@aol.com wrote:
that is neat where can we get one!?
In a message dated 6/13/2015 4:28:28 P.M. US Mountain Standard Time,
For any on the list that might be interested...
The colourful Amstrad CPC 464. The latest in my stash/hoard/collection to
get the YouTube treatment.
http://youtu.be/rOuPuE194fo
Terry (Tez)
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