Morris Dovey wrote in news:hq37e4$kpb$ snipped-for-privacy@speranza.aioe.org:
*snip**snip*
That's apparently how the Apple II drive worked. The stepper motor would seek inwards 40 times, ensuring the head was at track 0. That way, the drive didn't need any fancy track seeking electronics.
Puckdropper
I agree Warhol took chances and broke new ground. I quite like his stuff.
I like his stuff too...but it is as recognizable as a Van Gogh.
What colour was it? Makes a difference in price.
Meh... you seen one pile of shit, you've seen them all.
FIVE bucks only? What a cheap-ass.
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Where and When?
Not all risk takers are artists. Some just produce, well, shit.
As Willy Sutton famously said when asked why he robbed banks: "Because that's where the money is."
Thatsa forshure. Most produce product that, well, in their minds is art, but really? Then there is that faction that is highly skilled in certain disciplines, like bronze casting, throwing pots, building medicine cabinets, but do they have the creativity to have it become art? I realize that some of that becomes extremely difficult to see. A local guy makes these doorknobs on his lathe. Basically balls on a bolt. Art? Then we have this thing every year called Art In The Park. I assure you that shit comes in many shapes, materials and colours. I have yet to see any of that kind of 'art' in the National in London (UK), Rijksmuseum or the Taft. That is not to say that I like all I have travelled to see, just no shit. At least no shit by my definition of shit.....and shit is in the eye of the beholder, n'est pas?
Really. Really? You haven't looked very hard.
=A0result, zero carry
esult, one =A0carry
result, zero borrow
=A0result, zero borrow
=A0result, one =A0borrow
...which are the same operations.
So what? Are you trying to prove your prowess with useless information?
:
=A0result, zero carry
result, one =A0carry
o result, zero borrow
=A0result, zero borrow
=A0result, one =A0borrow
Are you showing off that the information is useless to YOU because your prowess is so elevated?
:
te:
ult, zero carry
e =A0result, zero carry
ro result, one =A0carry
ero result, zero borrow
ne =A0result, zero borrow
ne =A0result, one =A0borrow
Idiot. A particular method of encoding negative numbers isn't relevant when discussing the difference/similarity between subtraction and addition. I wouldn't expect you to know anything about it. OTOH, you are up to your usual standards in cashing checks with your mouth that you ass can't cover.
FWIW, and I won't wish to get dragged into any muck, the algorithm for performing of translating to negative numbers (assuming 2s complement representation) IS relevant if one will evaluate expressions of the form A-B as A+(-B).
Since bitwise negation can be performed by a single transistor, I would expect that that a value in a register could be negated VERY fast. I think just a few clock cycles.
Bill
On Tue, 13 Apr 2010 20:08:30 -0700 (PDT), the infamous Robatoy scrawled the following:
Black rubber with steel wire, $4,000 "art"
"Art" has a 2354.326% markup? Gimme a break.
Proving a point about "artists" is all you need to know.
On Tue, 13 Apr 2010 19:44:56 -0700, the infamous "LDosser" scrawled the following:
Andy Warhol's work SUCKED. He and Picasso can go piss up a rope.
Gosh, I'm not even going to mention Cindi Lauper, then! ; )
Go listen to "True Colors" over at Amazon, and see if it doesn't move you in some way! ; )
On Wed, 14 Apr 2010 13:27:15 -0400, the infamous "Bill" scrawled the following:
Loved her in "Vibes".
Only if you're doing invert-add to perform subtraction. The topic was specifically about hardware subtraction (or addition =3D complement- subtract), *not* invert-add.
Above you use 2's complement representations in your example. Now you switch tracks to 1's complement representation of negative numbers (the only format where negation =3D inversion). Yes, bitwise *INVERSION* can be done by a single transistor (indeed it takes zero clock cycles to invert a signal), but this is a negation only if you're doing 1's complement arithmetic. You still have to do the end-around carry for the addition (two carry propagations). OTOH, if you're doing 2's complement arithmetic negation is invert AND ADD ONE, which also takes two carry propagation periods (complement, add). TANSTAAFL.
Larry, that was sheer poetry. I'm getting a little misty here.
On Wed, 14 Apr 2010 13:41:15 -0500, the infamous Steve Turner scrawled the following:
Better'n Keats, wot?
te:
rote:
ly. =A0'Adder'
esult, zero carry
one =A0result, zero carry
zero result, one =A0carry
zero result, zero borrow
one =A0result, zero borrow
one =A0result, one =A0borrow
Yup, you're one of 'them' alright. You ain't much.
rote:
ctly. =A0'Adder'
result, zero carry
? zero result, one =A0carry
=3D> zero result, zero borrow
=3D> one =A0result, zero borrow
=3D> one =A0result, one =A0borrow
What a moron, RoboTwat, but I already knew that.
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