I picked up a bunch of CPM archives from CPMUG. The files end with the
ARK file extension. I've tried the unark16.exe I picked up from the
oak.oakland.edu site but I can't seem to get them to unpack.
What MS-DOS command works on these archives or do I need to fetch a CP/M
version and run under a CP/M emulator?
>It's a tossup which was the less reliable
>product: the 1710AV, or the PowerBook 5300. Check out some of the
>you-had-to-be-there rants about this monitor in Google Groups
UGH... well, I had the PB 5300, and if the 1710AV was anywhere near that
>When I adjust the brightness upward, it goes up for a moment, then
>suddenly there's considerable pincushioning and the vertical dimension goes
>down a mite, say 10%. When I adjust the pincushion, the pincushion goes away
>immediately, though I've not adjusted anything, and the image size goes back
>to what it was, but it's dim again.
Doesn't really match any of the repair notes in the tech manual. Although
there is a comment about CRT Arcing, and to turn off the unit, unplug the
power cord and ADB cable from the monitor, wait 10 seconds, hook it all
back up, and power it up. Problem should be gone.... but like I said, it
isn't exactly the same thing as you are describing, so that might not do
squat for you.
Rather it sounds more like the brightness control might be dying. Maybe a
bad cap or something (I'm not an EE, so I defer to someone with more
knowledge in these things than me).
> From: Tony Duell <ard(a)p850ug1.demon.co.uk>
> Do I have to be consistent all the time? :-)
Only if you want to maintain your reputation ;>)
> More seriously, for testing an interface, particularly if you're just
> starting out, it does make sense to start from a simple working computer
> (ZX81, CoCo, Apple ][, PC-with-ISA-slots-running MS-DOS, etc). It
> eliminates a lot of variables.
Thanks for the confirmation. At this point in my life I realize I will
never have the time to learn enough about electronics to design and build a
computer from scratch.
> But if you want to make a complete new computer system (which is really
> these ZX81 projects sound like), you are possibly better off starting
> with just the CPU chip.
The ZX81 projects which I am aware of all have one thing in common: they
maintain the "flavor" of the original machine. This includes Sinclair
BASIC, the screen font, and the rest of the ROM. Beyond that, it's wide
If you come to our meeting next March (Germany), you'll see what I mean.
How about it? The entire weekend, with meals and room, is only US$50.
On April 21, R. D. Davis wrote:
> > Hmm...I sense some Microsoftism on the list...
> Yes, all of the danger signs are there, as well as the problem of
> otherwise intelligent hackers who've become subservient to the greedy
> and nonsensical biz'droid lusers in large corporations --- who are far
> worse, and far more dangerous to society, than they're portrayed in
> the Dilbert comic strip. We must liberate these hackers who've been
> brainwashed into subservience by the biz'droids, so that they can get
> back to useful hacking on useful systems.
I just try not to associate with them. :)
(The guy sitting across the room from me is writing some firmware for
the project we're working on. A $2000 commercial 8051 C compiler (for
Windows of course, the land of commercial software) just crashed
because a function in the code it was compiling wasn't prototyped. If
this weren't commercial bullshit, I'd have the source code, and I'd
have fixed the bug in ten or fifteen minutes. But noooooo, that bug
will be there for at least the next year. Some people just like
commercial crap...I will never figure out why.)
But there's a pattern with the Windows folks...they're often people
who tend to do what they're "supposed" to do, and you're "supposed" to
use a PC and run Windows on it, so that's what they do. The decision
was made for them and they won't question it.
The whole "blind rule-following without thought" is a lifestyle that
people assume by choice or upbringing...there's nothing wrong with it
per se; we can't really fault 'em for it.
Dave McGuire "Mmmm. Big."
St. Petersburg, FL -Den
On Apr 30, 6:35, Richard Erlacher wrote:
> I got a 'couldn't find it" sort of error trying to visit that site. I
> both spellings of AIM-65, BTW, so something must be broken/bottlenecked.
(transpose AMI to AIM, remove the hyphen, and add a trailing '/' because
it's a directory)
Pete Peter Turnbull
University of York
> I have visited the site, but my question is apparently not
> frequent enough... from those who know, will "Hercules"
> talk BISYNC or SNA down a sync serial pipe? I have some
> toys here that emulate PU Type 2s (i.e., include a 3274
> cluster controller emulator) and older HASP and 3780 workstations,
> but they all expect a sync serial feed. I have the modem
> eliminators, etc., so that's not a problem. The problem is
> what to stick in a PeeCee that can be the Host end of the
> conversation (i.e., the 37x5 end, from the viewpoint of my
> peripherals). The Zilog 8530 SIO is smart enough to handle
> the link-level protocol (we used it and the COM5025), but
> outside of the classic Mac/Sun product line, you don't see
> a ZSIO in every box.
I'd think you'd either need a PC serial card that uses a
USART instead of a UART, or a convert of some kind... but
I don't know how the converter would supply synch...
The Data General One notebook used the Intel 8251a USART
for serial I/O; it through me for a loop because writing
an interrupt handler for it is quite different from its
But it wouldn't be too hard to kludge up a design for a
single-port 8251a-based serial card...
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits