> On 1 Feb 2007 at 18:18, William Donzelli wrote:
>
>> The nerds would then hack these to say 99 MHz.
>>
>> The ubernerds would hack them to say 1111 MHz...
>
> ...and "who cares" dummies like yours truly would simply hack them to
> say "HI" and "LO"...
>
> Cheers,
> Chuck
I surely can't be the only one to have thought of hex...
Anyone hacked their Z-80 with a analog meter yet? Seems the easiest
(just pull off of the M1 line).
there never was the ability to perform color on the
*classic* (i.e Z80 or 68k based) Trash-80s, wuz there?
I know the 2K wasnt 1st, the award going to the coco
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--- Chuck Guzis wrote:
> On 4 Feb 2007 at 0:56, Tony Duell wrote:
>
> > And another oddiity. The whole design of the Apple
> ][ seems to have been
> > to save a chip if at all possible (provided the
> machine still works --
> > just). And yet the kayboard was encoded in
> hardware.
> Why? It meant you
> > couldn't implelement a lower case keyboard in
> software (there are the
> > well-known shift key mods where you run a wire
> from
> the shift keyswitch
> > to one of the single-bit inputs on the games
> connector, which shouldn't
> > have been necessary).
>
> Thank you for absolving me of being the first to use
> the term
> "gutless wonder". :)
LOL. That has a certain ring to it.
It gives character. :)
> In a way, I suppose the disk controller was a clever
> design. But it
> locked the CPU into 2MHz operation. The use of a
> simple arithmetic
> checksum for each sector was not perhaps the most
> reliable solution
> either. But the biggest problem is that disk
> reading
> and writing
> required 100% attention from the CPU. On most other
> computers that
> used dedicated LSI controllers, the possibility
> existed for
> overlapped computation/disk access.
Oh yes, that's a huge gotcha with the disk II. It
could make communications software or data logging
interesting.
There were other disk systems for the Apple though
none as ubiquitous.
I like the Disk II. I don't think it was the ultimate
disk system, just a clever/ cheap one (for Apple at
least).
Liam Busey
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My God! I just looked at the PDP11 console on the OSX SimH.
It's beautiful. I use the PDP8 Xwindows emulator by Doug Jones... but I've
always felt the PDP11 needed something similar. I wish I could code enough
to do the full front panel in software for SimH.
Nice work.
Just wish I had a Mac newer than the 68030 in the IIfx downstairs.
Bill
On 2/1/07, John A. Dundas III <dundas at caltech.edu> wrote:
>
> I haven't seen a real one either, but sure appreciate Phil and Doug's
> work on the simulator.
>
> At 2:42 PM -0500 1/31/07, Phil Budne wrote:
> >John (Dundas) went on to build do PDP-11 front pannel blinklights und
> >switches for SIMH, looks like it's available at:
> >
> >http://dundas-mac.caltech.edu/~dundas/retro/simh/index.html
> >
> >Which says it includes Doug's and my work (in V0.9 or later).
>
> 'Tis true. I'm not much of a computer gamer but I do enjoy playing
> the occasional game of Lunar Lander on my Mac.
>
> John
>
Warren says:
> I would
> guess that the intellectual property rights of UNIX ended up with
> Alcatel-Lucent, but, that whole related series of trades, spin-offs and
> mergers has left me a bit confused. In any case, WHOEVER now owns the
> rights to UNIX would probably be interested in the fact that some
> version of their code is being sold without license.
>
Depends on who you listen to- SCO-Caldera think they got it from
Novell, Novell thinks that they still have it from when they bought out
AT&T's share of USL and SCO-Caldera only has rights to use...
At any rate the UNIX trademarks went to The Open Group, nee UNIX
International.
>
>Subject: Re: TRS-80 Model I
> From: Jim Battle <frustum at pacbell.net>
> Date: Sat, 03 Feb 2007 22:56:07 -0600
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Let's look at contemporaries (1977 micros). The Sol-20 had 64x16 text,
>and unless you polled the hblank signal and limited yourself to poking
>one character per 50 uS, you'd get snow on the screen. There were
>others that had the snow problem as well (eg, exidy sorcerer). The
>TRS-80 didn't have the snow problem, but it too had a 64x16 text
>display. The PET (which I never used) also had character graphics of
>the most pathetic sort.
It did have the snow problem (more correctly flashing) save for the cpu
was so slow at 1.7mhz that it was less likely too.
It also didn't have lower case, Sol20 aka the VDM-1 video did!
Apple did some neat things but they went in differnt directions at different
prices.
Allison
Please do not reply to me, this is a forwarded email
>from http://oldcomputers.net
------------------------------------------------
Name: shanon barnett - dentalarts at myway.com
Where: cullman, alabama
Date: Tue, Jan 30, 2007 - 11:02:47 PST
I have a mid 70's IBM 3742 Dual Data Station with the
Manuals that came with it also 2 floppies that it
uses. Would like to sale.
------------------------------------------------
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--- Cameron Kaiser <spectre at floodgap.com> wrote:
> > > The quintessentail 'arty' machine I still say
is
> the
> >
> > Won't we be flamed if we don't acknowledge the
> Kim-1 as the most beautiful
> > of all time?
>
Kim-wahhh??!! (joking)
I don't think anyone has mentioned the C= PET.
You can't leave that out, what with the whole
2001 thing and all that.
Regards,
Andrew D. Burton
aliensrcooluk at yahoo.co.uk
PS. Does anyone know what has happened to
the Old Computer Museum? I can't connect to it?
"William Donzelli" <wdonzelli at gmail.com> wrote:
>> What exactly is it about that machine that makes you say that?
>> How does it differ from any other (similarly well-preserved)
>> PDP-11/70?
>>
>> (FWIW: I don't know either the seller or Jim Willing; I'm just curious).
>
>
> Jim Willing was one of the pioneers in this computer collecting hobby
> (I apply pioneers to those of us that were doing this seriously over
> ten years ago - before this list, and before there even was a hobby).
Cool! I'm a pioneer, having collected these things for close to 25 years.
Well, I'm not sure I would call it collecting in the normal sense of the
word. I want to keep these machines running, useable, and in use.
Guess that's why Magica exists (even though she's not powered on right
now), along with the other machines at the same site.
Johnny
