Is anyone on the list going to this hamfest?
Has anyone gone before? Is it worth a 90
minute (each way) drive?
The web page for it fails to mention what time
it starts or what it costs to get in.
Thanks.
> From: Chris
>
> >- Which makes me think, and yes my question here it OT, so reply
> >directly... My OS X G4 has a modem port, but no other external serial
> >ports... (those bastards at Apple! :) Is there a way to hook up my VT420
> to
> >it, so I can log into Darwin? Maybe using an external modem hanging off
> of
> >the VT420?
>
> Get that Griffin G-Port if you aren't using the modem. It replaces the
> modem card and gives you a standard Mac RS-422 serial/localtalk port. I
> think they are about $40.
>
> Otherwise, what about a USB to Serial adaptor?
>
> -chris
>
The G-Port is a neat idea, but since I'm poor at the moment, and
have an external modem already, that's why I was thinking along that
route...
--
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- mailto:david.woyciesjes@yale.edu
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1 - Darwin Kernel Version 5
Running since 01/22/2002 without a crash
>> >I have tried to hit command-pretzel-o-f at bootup
>>
>> Control-Command-O-F (the pretzel/cloverleaf/open apple is the command
>> key).
I'm glancing at that link for info of 7200 to Linux... and it mentions
the keys to hold are
Command-Option-O-F... not Control-Command-O-F.
I do however assume that you were already holding the correct keys, since
you said the screen blanked when you did it... but I figured it bears
pointing out just in case.
-chris
<http://www.mythtech.net>
>> didn't think they started that until PPC's... but I'm not really sure
>
>PPCs? If you mean PowerPC, I'm sure it's got a PowerPC core ;) But I
>assume you mean something else.
Yeah, I dropped the word "later" ("until later PPC's")... caused by over
editing what I wrote first, which was something along the lines of "I
didn't think they started doing OF until the later model 603e/604's that
came out around the time of the first G3s, in the era of motorola
clones".
And when I diced that down to simplify my statement, I diced a little too
much.
Sorry about that.
-chris
<http://www.mythtech.net>
> > And EOF is represented by two consecutive zero-length records.
>
> Thanks, I've been curious about this spec for a while and had little
> luck turning up a concise description of the format.
>
> One question, if I want to write multiple consecutive EOFs (I'm
> thinking of classic HP3000 MPE :STORE format tapes here) do I write
> two zero-length records for each, or do I "compress out" the
> zero-length records in the middle? Say I want to write two EOFs,
> do I write {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0} or
> {0,0,0,0}, {0,0,0,0}, {0,0,0,0}? I'm hoping it's the former.
My first attempt at understanding the format was wrong (see my
comment re intuition).
I would side with you on it being the former, but that's
my intuition speaking to me...
;)
> According to this link, it states that OF on the 7200 doesn't
>drive the display and that a serial cable must be constructed to
>access it by terminal. It doesn't give specifics on the connection
>though.
>
> http://homepages.ihug.com.au/~aturner/7200boot.html
>
> There are also other links there that may be useful. It
>looks like OF on the 7200 has quite a few bugs.
Hum... I happen to have a 7200 logic board sitting here on my desk. I
think the power supply is under my desk... maybe I'll hook them up and
see what I can get into.
-chris
<http://www.mythtech.net>
>- Which makes me think, and yes my question here it OT, so reply
>directly... My OS X G4 has a modem port, but no other external serial
>ports... (those bastards at Apple! :) Is there a way to hook up my VT420 to
>it, so I can log into Darwin? Maybe using an external modem hanging off of
>the VT420?
Get that Griffin G-Port if you aren't using the modem. It replaces the
modem card and gives you a standard Mac RS-422 serial/localtalk port. I
think they are about $40.
Otherwise, what about a USB to Serial adaptor?
-chris
<http://www.mythtech.net>
> -----Original Message-----
> From: Jeff Hellige [mailto:jhellige@earthlink.net]
> According to this link, it states that OF on the 7200 doesn't
> drive the display and that a serial cable must be constructed to
> access it by terminal. It doesn't give specifics on the connection
> though.
I have such a cable. As I said, it hooks a terminal into a SPARC,
with the same kind of port, perfectly well. For some reason I still
can't get OF to talk to me on the terminal (either with or without a
null-modem).
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
> -----Original Message-----
> From: Chris [mailto:mythtech@mac.com]
> I assume you researched it already, so I won't get into
> asking if you are
> sure the 7200 will go into open-firmware. I thought it predated OF. I
I'm not sure, but most of the places I've checked seem to think it
has it.
> didn't think they started that until PPC's... but I'm not really sure
PPCs? If you mean PowerPC, I'm sure it's got a PowerPC core ;) But I
assume you mean something else.
> (and seeing as the 7200 is PCI, it is a good candiate to be
> an early unit
> with OF).
I've read that it was the first. With a version of 1.0.5 or something
like that. I also have a PDF from apple (specifically regarding the
7200 series) which says this:
The system software for the Power Macintosh 7200 computer includes the
following new features:
large partition support
Drive Setup
transport-independent networking (Open Transport)
Open Firmware startup
enhanced power management software
> >I have tried to hit command-pretzel-o-f at bootup
>
> Control-Command-O-F (the pretzel/cloverleaf/open apple is the command
> key).
.../splat.
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
> -----Original Message-----
> From: David Woyciesjes [mailto:DAW@yalepress3.unipress.yale.edu]
> - Have you tried setting the terminal at 9600/8/n/1? That seems to
> work for about everything, assuming someone hasn't changed the default
> settings...
Yes.
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
