>From: dave04a at dunfield.com
>
>> Dave Dunfield wrote:
>>
>> >
>> > IMD needs:
>> > - unrestricted access to the floppy disk controller hardware.
>> > - Nobody else messing with the FDC hardware/interrupts while it is
>> > active.
>> > - to not be held-up while some other task decides to hog the CPU for
>> > a little while (there are real-time critical aspects to the analysis
phase)
>> >
>> > Winders 2K fails on pretty much all of the above. I haven't tried VPC, but
>>
>> Matter of interest, and I haven't got time to try it, but will it work
>> in FreeDOS?
>
>I have not tried it (don't have FD installed anywhere), however I don't see why
>it would not - as long as FD leaves the FDC alone when it's not accessing it it
>should be OK (I access the FDC by direct manipulation - the only DOS
>functions I use specifically relating to the FDC are get/set the interrupt
vector,
>and the only BIOS function I use is "reset disk system" which I do just before
>I exit).
Hi Dave
How do you deal with DMA? On my code I needed to setup the
DMA controller as well.
Dwight
>
>Regards,
>Dave
>--
>dave04a (at) Dave Dunfield
>dunfield (dot) Firmware development services & tools: www.dunfield.com
>com Vintage computing equipment collector.
Richard - I found your name in an old post referencing the 1002-HDO
controller, and I was wondering if you have any information on how to do a
low level format with it. I have been looking for a while to get my Kaypro
16 up and running, but I have not had any luck. Is it hiding from me in the
controller rom? Do I need an external program? If you have any info, I'd
most appreciate any pointers. If you still have the scans of the
datasheet/manual, I'd love to get ahold of them as well.
Thanks!
--
James
Here are the LOGICAL names for the various
public directories on the WITCH:
GAME: = DK2:& = GAMES
SOC: = DK2:$ = SOCIOLOGY
MISC: = DK2:! = MISCELLANEOUS
CS: = DK2:% = COMPUTER SCIENCE
STAT: = DK3:$ = STATISTICS
ECO: = DK3:! = ECONOMICS
MATH: = DK3:% = MATH
SCI: = DK3:& = SCIENCE
I also thought that I had a logical LU: for
Local Utilities, but I must have missed that.
LU: should be mapped to DK2:(1,13). I have
just added LU: as a LOGICAL and it will be
available until the system goes down or until
I make it permanent.
Ashley Carder
wacarder at usit.nethttp://www.woffordwitch.com
I notice quite a bit of activity lately on my
online Wofford Witch system. If anyone
has any questions about how to get around
on the system, feel free to email me or to
leave a message on the Wofford Witch web
site.
I have quite a few 1970s vintage games
loaded on the system. If you log in and
would like to see what games are available,
you can type:
DIR GAME:
to get a directory listing.
If any of you are serious about learning how
to use the system and would like your own
account instead of my guest (40,1) account,
send me an email or post a message on my
message board.
Basic information on how to use the system
can be found on the web site under Witch
Documents in the Witch User Guide. This
guide actually was for the original Witch back
in the 1970s, but much of it applies to the
Witch that I operate online via my web site.
Thanks and enjoy!
Ashley Carder
wacarder at usit.nethttp://www.woffordwitch.com
Hey, long time no C... about 6 months. So unbelievably swamped with
work I just had to drop time-sucking side shows I mean side
projects... :-)
Part of recovery from 2005 is making room in my smaller lab for the
future, so cherished but in-the-way items must go.
* I'm reducing my Data General Nova/4 to one rack. 'Must go' are a
D.G. 6xxx vacuum column tape drive (or two) in good working order;
the 4300 I/O subsystem with SAM and software; and depending on Bruce
Ray's choice on first refusal, my Dasher LP2 in perfect working
order, with a case and a half of sealed new factory ribbons and one
case of greenbar. Centronics interface (plug onto a peecee!). Not
easy to ship the latter. All in excellent shape with complete paper
documentation and software. Would trade it all for one compatible
reel and arm type tape drive that'd do 1600 bpi (would then free up
the 2nd vaccuum column drive too).
The items below are on eBay now:
* bunch of S100 cards, all cheap and with manuals.
* DSI paper & mylar punch and reader (broken hinge on reader but
otherwise 100% fine).
* HP 1650b logic analyzer with 5 complete probe sets. Works
perfectly, tube somewhat dim. No operating manual, have maint. manual.
ian
* Old Shugart 801, w/front panel UNIT and WRITE PROTECT switches.
* Kaypro II, very clean, in factory nylon carrying case.
* Cardmatic 123a, with bunch of cards, non-working (bad tube and
linecord for starters) but very clean
* Micromation 10-slot S100 buss & card cage.
On Jan 9 2006, 12:33, C Fernandez wrote:
> Pete Turnbull wrote:
> > Do you think manufacturers would put sand, one of the few common
> > substances that will scour glass, into a substance used for
cleaning
> > glassware?
>
> What is it that etches glass in a dishwasher?
The repeated action of hot and mildly alkaline water containing
detergent, particularly if it's hard water.
> I don't have any problems with corrosion when cleaning metal with
> dishsoap. However, if I use dishwasher soap in a dishwasher on
metal,
> I'll get corrosion every time. I'm stripping oil off both ways.
Most likely that's down to electrolytic action between slightly
different metals, particularly where utensils are touching each other.
It's commonly seen with mixtures of "stainless" steel. It's not
because of the type of detergent.
--
Pete Peter Turnbull
Network Manager
University of York
On Jan 9 2006, 12:32, der Mouse wrote:
> Sand, no, but silicon dioxide, quite possibly. (Not all silicon
> dioxide is sand.) In sufficiently fine particles, it won't hurt
> anything - consider that polishing agents are basically just
abrasives
> on a very fine scale.
Different sort of polishing, though. You're thinking of things like
jeweller's rouge, metal polish, etc. The small amount of SiO2 that
could be included in a normal dose of dishwasher powder would be pretty
pointless, I'm sure.
> > Detergent, on the other hand, does not react with oils, it works
like
> > soap to mix with free oily substances and water.
>
> I've heard that that's not actually true, that detergents actually
> cleave fats and oils, digesting them, if you will - that that's the
> difference between detergents and soaps, in fact. But that was afrom
a
> relatively non-authoritative source; anyone here actually know the
> chemistry of detergents and how they differ from soaps?
I was oversimplifiying, I admit; there is a difference, yes. It's not
an area I could claim to be a real expert on, though.
--
Pete Peter Turnbull
Network Manager
University of York
> Should I refer to my system (shorthand) as an "LSI-11", an
> "11-03", or something else (besides "that pile of junk parts :) ?
George.
"I will love him and pet him and call him George" - from some Warner
Bros. cartoon.
OK, I have had terminals shipped to me in the past and they were fine,
but I experienced a bit of damage when having a Heath Z-19 terminal
shipped to me recently. Fortunately it can be repaired, but I think
its just that I came out somewhat lucky (even more lucky would for it
to not have been damaged at all).
If you were to ship a terminal/monitor, what would be your approach?
In the case of the Z-19, I think the root cause is that only 1 of the
4 mounting screws for the tube in the case had a support bracket.
This is the only mounting post that didn't shear from the rest of the
enclosure. The other 3 posts sheared off at their base to the
enclosure. Some superglue should be able to reattach the posts to the
enclosure so that the whole thing will be "like new". So this might
be something specific to this enclosure design.
However, I'm currently looking at a Tektronix 4115 that's in Illinois
and I'm in Utah. This is an item that would be "key" for my graphics
collection (and I've not seen one offered with any great frequency; a
local supplier has them but he charges $1200 minimum for these units
as costly replacements for mission critical systems). However, I'm
really leary of shipping it that far after my experience with the
Z-19.
Comments?
--
"The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
<http://www.xmission.com/~legalize/book/>
Pilgrimage: Utah's annual demoparty
<http://pilgrimage.scene.org>
