>
>Subject: Re: TRS-80 without floppy drive
> From: Fred Cisin <cisin at xenosoft.com>
> Date: Wed, 27 Apr 2005 14:56:42 -0700 (PDT)
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>The original TRS-80 cassette interface was often a WORHE (Write Once, Read
>Hardly Ever). It was not acceptably reliable.
>
It was the only casette interface. There was a mod for the Level-II
that greatly improved read reliability. Level-1 machine used half
the data rate and were decent. Myself I modded one trs-80 I have
by removing most of the casette input opamp crap, it worked
notably better!
Allison
>
>Subject: Re: S100 haul
> From: "Witchy" <witchy at binarydinosaurs.co.uk>
> Date: Wed, 27 Apr 2005 19:20:57 +0100 (BST)
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>
>> On Wed, 27 Apr 2005, Jules Richardson wrote:
>>
>>> We picked up a van load at the weekend - 19 Horizons (another 3 are on
>>> the way!), 9 Minstrels, a Cromemco (I forget which!), and an imperial
>>> buttload (artistic licence :) of S100 spares.
Im impressed!
>adrian/witchy
>I've got an advert for one in my stash of unscanned mags, but I'm pretty
>sure it was a standard (if such a word could be applied) Z80 powered CP/M
>box but initially single user instead of multiuser like the Horizon.
The NS* horizon is a Z80/4mhz single user S100 system though NS* offered a
multiuser OS and basic for it.
I know I'm an owner of two. The first I built for myself in 1977!
Allison
Just read Dave D's post - seems to be the week for S100 stuff!
We picked up a van load at the weekend - 19 Horizons (another 3 are on
the way!), 9 Minstrels, a Cromemco (I forget which!), and an imperial
buttload (artistic licence :) of S100 spares.
Reasonable amount of documentation and floppies too, plus some useful
test gear (logic analyser, DRAM / SIMM tester, capacitance meter).
This was from a house where the old chap had died recently - to say he
was a bit of a hoarder was an understatement. The house was floor to
ceiling with computers, docs, software, newspapers, books, photos,
videos. Unfortunately the chap's son who was there with us was paranoid
about there being sensitive information buried in everything, so 90% of
the docs and disks had to be left behind - ditto with most of the
components and test gear as he was worried they'd still be on the books
>from the guy's old business and he'd be liable if they were released.
Shame as it means there's a lot of stuff that's going to get trashed (it
wasn't the sort of thing that'd have any resale value).
We got a lot of the hardware. I think there were a couple of Minstrels
and Televideos left, along with a BBC Micro, Sinclair QL, a pile of mono
displays, and a dull Amstrad wordprocessor machine.
We've not had time to sort through everything that we picked up yet. I
did notice some S100 vector graphics boards that caught my eye...
Some quick pics:
http://www.patooie.com/temp/northstars_sm.jpghttp://www.patooie.com/temp/minstrels_sm.jpghttp://www.patooie.com/temp/s100_spares_sm.jpg
(lots more spares in boxes out of shot!)
All weekend was spent loading and unloading stuff - will try and get an
inventory of the boards within a few days...
cheers
Jules
>From: "Marvin Johnston" <marvin at rain.org>
>
>
>Can someone recommend a freeware 6802 disassembler. The Micro General
>postal scale that I have (circa 1983) has a 6802 processor with five
>27c64 Eproms. I've copied the eprom binarys to disk, and now want to see
>what the program does. It has lost its calibration (the backup battery
>died) and upon replacing the battery, it is calling for a calibration
>and I've not been able to find any informaton on the web regarding how
>to calibrate the scale. So it looks like time to do it the hard way :).
>Thanks!
>
Hi Marvin
I think the 6802 is compatable with the 6800 code.
If so, any 6800 disassembler would work.
I may have some code to do the disassembly someplace
but it is stuff I wrote and isn't too user friendly.
If you can't get anything more standard, let me
know and I can disassemble it for you.
Dwight
>From: "Jules Richardson" <julesrichardsonuk at yahoo.co.uk>
---snip---
> http://www.patooie.com/temp/s100_spares_sm.jpg
Hi
I wonder if the disk are all hard sectored or if they
are soft sectored. Dave Dunfield has been working on
methods to transfer disk images over serial lines
>from the N*. It would be a massive job to filter through
all those disk. Who knows, one might find a jewel for Jules
in the lot :)
Dwight
Well I picked up the cray today, I'm not an expert but it looks like
it's either got 4 or 5 processors. It also seems to have around 30 4gb
hard drives. But there was one main problem it wouldn;t fit through
the door in my flat. So I am now slightly poorer and it has a months
storage. They guy I spoke to when I picked said it was just switched
off, put on a fork lift and moved in to the warehouse. But it seems to
have had quite a bit of cosmetic damage, I think it has been dropped
or at least knocked over. I will have to wait and see if and permenant
damage has been done, It seems to be nuclear proof. The outisde skins
are nearly a 2 man lift. We spent 4 hours stripping it down to get on
the truck. In the end we might as well of left it and put it on with a
fork lift and then took it off the other end. ho hum
Dan
At this point I'm *seriously* disgusted with DSK2FILE. I transferred
"Asimov 2.0" over to my //gs, and I'm able to successfully create the
floppies!
On a related note, will Wizardry I run on a Apple //gs?
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
Hi guys,
I just returned from the East coast (New Brunswick Canada) where I met
with a gentleman who had a large collection of vintage equipment for
me - Brought back one pickup truck worth, and will be returning next
month for the rest - 1200km each way - by the time I am finished, I
will have travelled nearly 5,000km!
Here's what I received in total:
S-100 systems:
IMSAI 8080
NorthStar Horizon
Cromemco Z-2D
Cromemco System-3 (Older model with the dual/quad persci drives).
Compupro 8086 S-100 system
Wynchester
Compuduct "Rainbow" (near S-100, has non-standard/tall cards).
Multiflex mainboard with 4 S-100 slots & CPU card.
Protec PRO-80 - Canadian SBC with one S-100 slot
Box with 40-50 S-100 cards - in addition to the systems which are well
populated - Found a number of Mits and IMS cards, also a Hayes Micromodem
100 - CPUs, disk controllers, memory etc. - haven't inventoried it all
yet
non S-100:
Altos 586
Dec Rainbow
Xerox 820-2 (with spare mainboard).
2x Dy4 Orion-V (STD bus Z80-CP/M system)
Ohio Scientific SuperBoard-2 (in enclosure)
Acorn Atom
Nelma Persona (Canadian CP/M system)
BMC IF800
Visual 1050
MAI Basic Four
NEC APC
NEC N5200/05
Megatel Quark (ultra small Canadian SBC)
HAL (early Canadian IBM clone)
Osborne-1 (1st edition "tan")
Epson PX-8
Also, an ADM-3A terminal (good screen), as well as several boxes of
odd's and ends, and boxes and boxes of documentation and software.
Even got a nice little addition to my calculator section: A "Sinclair
Scientific" complete with hard carry case and manual.
Not quite sure where it's all going to go ...
I also received a disassembled Grid Compas 1101 which had a battery
leak causing irreparable damage to the mainboard - however there are
lots of parts, bubble memory modules, complete documentation and
original disks - if anyone needs any of these parts, please contact
me.
Coupled with the material I acquired in January, I figure this should
keep me busy scanning and archiving for a good long time - Some of the
material I am not very familier with, so I will no doubt be turning to
the list for information from time to time...
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Hi all,
got this disk drive recently and figured out that its interface is HSMD,
which seems to be a modification of the SMD-Interface.
Ok, I know E-SMD, which is faster than SMD, so another modification, but H-SMD ??
I've never seen a controller doing H-SMD. What about the Emulex QD33? It does SMD as well
as E-SMD. Can I use that one for this drive?
Any hints?
Regards,
Pierre
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>Can you clear out the Living Room entirely?
>Move all hobby stuff to one room, either the basement
>or Garage, or the spare room, if you are so lucky to have
>one.
You assume I haven't already taken over the basement and the garage ;-)
-chris
<http://www.mythtech.net>
