Sure. And then Apple would show our mascot, Barney, in flames.
I like this already!
>
>What would happen if we made a PC-sized PDP-11 processor using the
Alpha
>technology? (On a single chip, clock it at ~300-400 MHz)
>As the PDP-11 instruction set is MUCH better than 80x86, would it
outrun
>a PC? Could this be a Pentium Killer?
>-------
>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
<are there any good sites out there containing collections of schematics
<for old machines? I occasionally come across sites with a few schematics
No.
<interest in this? I was thinking more along the lines of some of the
<more obscure hardware out there though, as there's probably plenty of
<places to get details on common machines such as the popular 8-bit
<micros of the early 80's. Would be nice to have copies of ROM/Disk
<images where possible too...)
There is the problem of copyrights and permission. Not as easy as you'd
think as the copyright live past the companies demise so you have to
track where or who still holds it.
Allison
As the PDP-11 instruction set is MUCH better than 80x86, would it outrun
a PC?
-------
Hmm, refresh my memory, now what were the PDP-11 instructions to
directly address 4GB of memory? I can't seem to recall any 32 bit
address registers.
Darn. I've really lost it...how did the virtual memory hardware work in
a PDP-11?
Seriously, if you mean the sorta RISC like instruction set in the 11 is
better than the x86 set, then DEC probably would have come up with
something like that. Course, with extra silicon, they could have gone
to 64 bits, and put more cache onboard, then clock it really fast. Then
come up with some catchy marketing name, like Gamma, or Beta, or ....
Jack Peacock
I have C-64 ones. You could attach a gender changer to the koala
pad if it has an Apple plug, and use it on a Commodore.
>Does anyone have the disks for the paint program that came with the
Apple
>Koala pad?
>
>Thanks
>
>manney(a)lrbcg.com
>
>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
<PROM, or maybe one of those TI PALs with the 74-series numbers'. I said
<'No, I can do it with a normal 16 pin TTL chip that doesn't have to go
<in
<a programmer first'. So, what was the chip ?
<
<74LS138, 1 of 8 decoder, the three inputs go to A, B, C, all 8
<possibilities decoded on the outputs.
< Jack Peacock
How about 74153 or 74155 real handy for creating complex miniterms that
a small prom or pal might be used for.
Allison
<> =============================================================guide rai
<> +
<> +
<> +
<> +
<> +++++++++++++++++++++++++++ <<<<<<<direction of motion (96 needed)
<> ^ +
<> | +
<> / +
<> | +
<> |=============================================================guide rai
<> ^optos to read the leading edge of the card for column clock, spacing
<> is such that each one is obscured as the column is over the column
<> leds making it self indexing. It's possible to go very fast.
<
<Now that I like!. I wonder where I can find some cheap photodiodes.
<
<What about one of the CCD (or similar) linear image sensor chips? They're
<quite cheap in surplus shops now, I think... A bit of optics to focus the
<image onto the sensor, and a bit of electronics to drive it (which is not
<that hard to design).
CCD needs a fair amount of electronics, photo transistors are cheaper and
simpler. Jade, JAMCO, JDR and BG micro list phototransistors pretty
cheap.
Allison
>(Cautiously, looking around). Is all the nastiness over, now?
Been over for weeks. It seemed to merely be 'growing pains.'
>Does anyone have the disks for the paint program that came with the Apple
>Koala pad?
I remember hearing that it should work with any app that supports mice.
Glad to have you back. (I was wondering where the heck you were.)
Tim D. Hotze
(Cautiously, looking around). Is all the nastiness over, now?
Does anyone have the disks for the paint program that came with the Apple
Koala pad?
Thanks
manney(a)lrbcg.com
> > panel monitor used an octal keypad & display, and the octal thinking
carried
> > over to the assembler package. Heath also used "split octal" in the
fashion
> >
> Actually I think Octal is a dumb idea for 8 or 16 bit processors :-) -
A side note...on the IMSAI front panel the address/data switches came in
two colors, red and blue, so you could group them for hex or octal
inputs. (Obscure trivia, the prototype IMSAI used black switches.) You
could tell just by looking at someone's front panel if they preferred
hex or octal. Mine is in hex, S/360 Assembler was the first assembly
language I learned, and it was in hex.
If I recall correctly, Microsoft was an early user of split octal. Soon
after the 4K/8K BASIC, MS came up with an editor/debugger package for
Assembler that used the split octal notation (fuzzy here, does anyone
else remember that package, it was short-lived).
Octal proved useful in suprising ways. On Seymour Cray's CDC 6000
series, with a 60 bit word, you might think that a dump using 15 hex
digits per word would be the most useful, but in fact that was never
done, because the 60 bit word was broken down into 15 and 30 bit
instructions (multiple instructions per word, a Cray innovation I
believe), easy to see in octal but not a good fit in hex. Plus, the
character set normally used was 6 bit, not 7 or 8 bit ANSI.
Jack Peacock
-Matt Pritchard
Graphics Engine and Optimization Specialist
MS Age of Empires & Age of Empires ][
> -----Original Message-----
> From: Jeff Kaneko [SMTP:Jeff.Kaneko@ifrsys.com]
> Sent: Wednesday, April 22, 1998 9:37 AM
> To: Discussion re-collecting of classic computers
> Subject: RE: The PC's Soviet?
>
>
> >
> > There were all kinds of small Apple cloners around, with various
> Apple
> > variety and fruit names ("Granny Smith", "McIntosh", "Pear", etc.).
> The
> > only obvious differences between most of these machines and an
> actual
> > Apple ][+ was the lack of the Apple logo, and usually the presence
> of
> > lower case display (though not necessarily the shift-key mod, which
> my
> > machine lacks). Some had additional stuff, though, like function
> keys and
> > slightly differently shaped cases. Or maybe a different colour of
> > plastic.
>
> I fondly remember an issue of BYTE from long ago, that was the April
> 1st edition, that had a phoney advertisement in it for a 'Lemon
> Computer' that looked suspiciously like an Apple ][ (with a rather
> distressed and dissheveled user scratching his head . .).
>
> Wasn't that Creative Computing?. Back in the late 70's they would do
> an "April fools" section of their magazine. One year they printed it
> upside down at the back of the magazine so if you flipped it over, it
> looked like a different magazine.
