All:
Does anyone know the specs on the resistor terminator used on
the Tandon TM100 floppy drives? It's a 16-pin device but the Tandon manual
doesn't specify as far as I can see the value and configuration of the
terminator pack. I think it's 150 ohms but I don't know for sure.
Thanks!
Rich
Rich Cini
Collector of classic computers
Lead engineer, Altair32 Emulator
Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/>
http://highgate.comm.sfu.ca/~rcini/classiccmp/http://www.altair32.com/
/***************************************************/
Folks,
After many years waiting it seems a Sorceror is about to drop into my car
in a couple of days time. It's coming with the S100 bus expansion, twin
floppies, monitor (not the standard and heavy Exidy monitor) and 2 boxes
of cassettes and disks. Bonus: it works.
Now, aside from what I've read in the Exidy adverts I've got and stuff
gleaned from the 2 Sorcerors I've had my paws on I don't really know that
much about the machine itself other than it's a 2-3mhz Z80 job from about
1978. I know Exidy as an arcade machine manufacturer in the 70s and I know
they went bust in the early 80s but that's about it. Used to love playing
Bandido and Crash! in a seaside arcade in 1980 or so :)
Anyone care to contribute things to the Exidy page I'm about to add to my
museum?
TIA!
--
adrian/witchy
Binary Dinosaurs creator/curator
www.binarydinosaurs.co.uk - the UKs biggest home computer collection?
Well, I was expecting to get a Heathkit H11 today, but instead got handed
something else.
1) A mint condition Heathkit H27 (dual 8" floppy drive for H11). Wonder if
it's usable on anything else?
2) An odd Xerox box with two pieces:
A) There's a keyboard labled G25-028409. It has these tilt-up legs of a
style I've never seen before (they turn and come down from the side like
landing gear). The cable coming off the keyboard (keyboard end is hardwired)
has a DB25 on it. There is also a DB15 port on the back of the keyboard with
little lock posts like you see on an AUI port. The keyboard is missing what
I assume to be the ESC key.
B) There's the main "unit" labled product Code U07, and U07-015414. This
white cube has a black 8" floppy drive in the front. On the back is a
hardwired cable that ends in a DB37, and also a DB37 port on the back. I get
the feeling this box is JUST a floppy drive, not a system. There is a floppy
disk in the drive labled "Xerox 8000, applications #5, Master Disk, part
130S01031, Rev OS4.2, code 2Q84, CS#0714". Whatever the heck that means!
Any one in the know about Xerox stuff like this care to expand on what I
have?
Thanks!
Jay West
The titles thus far unclaimed -- along with a few additions.
I'd like to get the "spoken for" books weighed and out of
here RSN so anything not claimed from *this* batch goes
in the recycling bin in a couple of days...
Texas Instruments ("Data Books")
=================
Data Transmission Circuits (Line Circuits) '98
TMS380 Second Generation Token Ring UG '90
High Performance Networking Components (ATM, enet, TR, SONET...) '95
TVP5020 NTSC/PAL Video Decoder '99
Sprague
=======
Hall Effect & Optoelectronic Sensors '87
Integrated Circuits '87
Dallas Semiconductor
====================
Data Book Fall '97
Product Data Book '90/91
Analog Devices
==============
Amplifier Reference Manual (RM) '92
Data Converter RM Vol I '92
Data Converter RM Vol II '92
Special Linear RM '92
Design-In RM '94
Linear Products '90/92
Data Conversion Products '89/90
Micron
======
Flash Memory '97
DRAM '96
SRAM '96
Xicor Data Book '88
Micro Linear Data Book '91
Micro Networks Data Conversion Products '88/89
Micro Power Systems Full Line Catalog June '86
Philips Semiconductors for Radio, Audio and CD/DVD Systems '98
AMD Network Products: ethernet controllers Book 2 '98
(volume 1 hasn't turned up, yet)
A set (complete?) of QIC-related specifications
About 2" of unbound 8-1/2x11 sheets
(these *may* be available someplace for download
but the ones I have arrived in printed form...)
TI-99/4A UM1381-1 Modulators NEW
$7 each (3 for $18) plus shipping
This price is for members of the following lists only:
CC, TI & Mid Atlantic Retro Yahoo Groups only
you must mention that you saw the price on this list
TI-99/4A Modulator UM1381-1 NEW
Paypal, cash, check or money order
Please reply directly to ygehrich at yahoo.com
For "priority mail" postage from 85751, three
paper feed rollers for a laserjet 3 (I think they
also work on some of the other models of that
vintage -- but nothing newer!).
If you've never changed one, they can be a b*tch
(there are some tricks that can let you change it
easily WITHOUT dismantling the printer but far
too hard for me to put in writing :< ).
Prefer them to go to one person (so I don't have
to bother with boxing them up three times!) but I'll
consider splitting them up...
Thanks,
--don
>
>Subject: Re: Designing a Classic Computing Library
> From: "Zane H. Healy" <healyzh at aracnet.com>
> Date: Sat, 27 May 2006 08:34:27 -0700
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>>At 03:04 PM 5/26/06 -0700, you wrote:
>>>
>>>A good chunk of my collection of documentation will be going to a
>> >"Historical Resource Center" (aka Library) that is being built in the area.
>>
>> What kind of library is this? Does they specialize in old computers? My
>>experience with libararies is that they throw out ALL old computer stuff
>>(anything but MS Windows XP). One of my major sources is the outlet store
>>for the local county library system. You can't believe the stuff that gets
>>donated to them and that they turn right around and either throw out or put
>>in the outlet store. MY advice is to visit their library and see what they
>>have. If they don't have the kind of stuff that you're donating then it's
>>probably for a reason!
>
>It's not a public library, though once it is built, it will be open
>to the public. I actually have a major say as to what kinds of
>things go into the computer section of the Library, which is why I'm
>asking for input.
>
>This isn't going to be the sort of place you go to find kids books,
>or novels, like I said, this is a "Historical Resource Center". It
>is dedicated to history, and the main person behind this sees the
>value of a computer section, and I know pretty much the entire Board
>of Directors. They are also interested in at least some of my
>hardware, either as exhibits, or a way of enabling people to recover
>genealogical data they might have on classic Media (I've already
>helped recover a bunch of data off of 5 1/4" floppies). It's
>intended to become one of the major Historical libraries in the
>country.
>
>And yes, I do know what they currently have in the way of books and
>periodicals. Right now the computer section is primarily various old
>consumer oriented computer magazines.
>
> Zane
>
>
>--
>| Zane H. Healy | UNIX Systems Administrator |
>| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
>| MONK::HEALYZH (DECnet) | 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/ |
Re: Semi-OT: IDE & SATA to USB "dongles"
A similar device that I like much better is this one:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8818529060
It is a USB adapter that supports desktop IDE, laptop IDE and SATA drives.
It powers laptop IDE drives from the USB port, all other types (both IDE and
SATA) are powered from a switching power supply (included). All for less
than $20 including shipping.
I have several and they work quite well.
On 5/23/06, Chris M <chrism3667 at yahoo.com> wrote:
> --- Tony Duell <ard at p850ug1.demon.co.uk> wrote:
> > Sure a machine code monitor would have been even
> > nicer, but...
>
> Agreed. One of the dandiest features of puters like
> the C64. But come to think of it maybe that was on a
> separate cartridge. It's been a while...
You must have had it on a cartridge. The TIM monitor _did_ come in
ROM on the BASIC 2 and BASIC 4 PETs - I was so happy when I discovered
it on my 2001-32K (sold as a 3032 in Europe) - the instructions I had
included loading TIM off of tape, but they were the instructions for
BASIC 1 (8K static) PETs.
I wrote a Scott Adams game engine using TIM - I did all the work on
paper and typed it all
in, one subroutine at a time, in hex. Eventually, I got a nicer ML
monitor with a line-at-a-time assembler/disassembler. My productivity
soared!
I _wish_ the C-64 had come with a monitor, with or without an
assembler/disassembler. It was annoying to have stuff crash to the
blue screen when I forgot to load the monitor (or there wasn't room).
-ethan
>
>Subject: Re: Looking for specs for a Misubishi 82C55AP-2
> From: "Ethan Dicks" <ethan.dicks at gmail.com>
> Date: Sat, 27 May 2006 13:53:32 +1200
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>On 5/27/06, Chuck Guzis <cclist at sydex.com> wrote:
>> On 5/26/2006 at 12:18 PM Holger Veit wrote:
>> >typically, the -2 means 2MHz for other manufacturers...
>> I suspect that the -2 also means 2MHz for Mitsubishi. So you likely got a 2MHz part.
>>
>> Since I was in the same position a couple of months ago, there is a glaring
>> exception to this: NEC.
>>
>> The uPD 8255AC-2 is rated at 5 MHz and the 8255AC-5 is rated at (ready for
>> this?) 4 Mhz!
>
>Thanks, Chuck. That was almost certainly the particular vendor I was
>dimly remembering.
>
>So it seems that the Mitsubishi "-2" parts are most likely 2MHz, but
>I'll keep an eye out for NEC "-2" parts.
There more to it than that.
The -5 is really started by Intel and was really meant to indicate
8085 bus timing compatability which is slightly different than 8080.
It shows up in the MCS-85 Users manual 1978. So the -5 was 8085
compatable and that part was nominally available in 3mhz speeds.
So if you did anything else for 8085 at 5mhz you had to
use another number other than 5 was used. The base 8255A was
slower as the 8080 never got over 3mhz. A side effect of this
was the -5 was usually faster and the 8255A-5 was reverse compatable
to 8255A. The difference are subtle but do exist.
OBTW: the -n for peripherals didn't always relate to CPU clock
speed as it was bus timing related. One could argue bus speed and
timing are the same but the timing overlaps for things like CE/ to
READ/ or WRITE/ can be different and in the case of 82xx peripherals
the -5 was aimed at the 8085 and others were maybe not 8085 but
faster time wide for WR/ or RD/ active time. Typically Mistusbishi
and NEC were either excatly the same or radically different for
numbering. It really shows when 8085s or 8088s faster than 5mhz.
the 8255 existed to 12mhz(CMOS) as uPD71055 (memory test on number).
It was very common in the market that specific -n didn't mean speed
and even when it did -1 or -5 could mean the fastest or slowest.
especially for non memory parts.
Generally this is most important if your doing fast 8085 (5-6mhz)
8086/88 at 5mhz or more or Z80s at 4mhz or faster.
Allison
