aap_

47 ms·

241.
by aap_ 6y ago
In LA you calculate the normal of a plane by taking the cross product of two vectors lying in that plane. If you transform all three with the same matrix the normal will in the general case no longer be the cross product of the transformed
242.
by aap_ 6y ago
My (not quite serious) hope is that this will kill x86. After all every other architecture it ever supported died a mysterious death.
243.
by aap_ 6y ago
Very cool. I immediately recognized this procedural city as Berlin. Guess it's working pretty well.
244.
by aap_ 7y ago
Page sizes on the PDP-11 are 8kb. Its successor the VAX had 512b pages. I don't think there's any PDP-11 heritage there. The filesystem organzation has more to do with disk sizes than the pdp-11. Also the pdp-11 wasn't a micr
245.
by aap_ 7y ago
I think the author has never read pre-structured code. Today all we know is structured...apart from an occasional goto maybe.
246.
by aap_ 7y ago
Funny. I've run a recent x86 putty on Alpha.
247.
by aap_ 7y ago
Not to forget the i860 and Pentium 4. Intel really has a great track record of total failures.
248.
by aap_ 7y ago
Written by the woman who implemented the ao (add one) instruction on the Whirlwind I!
249.
by aap_ 7y ago
I haven't tested it much but I did this a while ago: https://github.com/aap/l15 Unfortunately there is no compiler (yet?) but otherwise I implemented most of what is described in the manual.
250.
by aap_ 7y ago
Simply one of the best computer books I know. I think this (or something similar to it) is the language all those toy-lisp projects should implement instead of something super minimal. It's actually useful and you learn about how lisp
251.
by aap_ 7y ago
I got to play with one a few months ago. cool thing!
252.
by aap_ 7y ago
The Berlin ſʒ is indeed what parent was referring to....unless he meant Bonn, where a very similar font is used. Would be interesting to know if a font like this is used elsewhere too.
253.
by aap_ 7y ago
Certainly not. The first emacs was created for the TECO editor on ITS by various people. It was further developed and maintained by RMS. Gosling's emacs came a few years later.
254.
by aap_ 7y ago
There is a difference between architecture and implementation. The 68000 ISA (i.e. the architecture) is 32 bits, the actual 68000 chip is not.
255.
by aap_ 7y ago
I think I complained to you when you posted this before that there is no actual addition in the code. consck is just loaded into ac3 but the code that sets it isn't there.
256.
by aap_ 7y ago
I think the date is random. The bell labs page doesn't say that the birthday is today.
257.
by aap_ 7y ago
The characters are not actually stored as rasters though. There are up,down,left,right,intensify and end signals that control the beam and the logic and no more than 30 pulses per character. In fact, I took photos of the "ROM" ear
258.
by aap_ 7y ago
Just beautiful. I think we still have quite a bit to learn from older approaches to using computers. I love how they're writing IBM 360 assembly on virtual IBM cards.
259.
by aap_ 7y ago
I'd say .arpa
260.
by aap_ 7y ago
That makes me sad.
261.
by aap_ 7y ago
The first? Plan 9 (9front to be specific) had support for it for a few weeks now.
262.
by aap_ 7y ago
/home came much later. I don't think they ever had it at bell labs.
263.
by aap_ 7y ago
Interesting. I would like to take a look at that softcore model.
264.
by aap_ 7y ago
I have the catclock in my xinitrc.
265.
by aap_ 7y ago
The one on page 13 is not what LISP 1.5 does, that's more of an earlier purer idea. I meant the one on page 70 where FUNCTION packs a fucking together with its environment into a FUNARG closure, which when applied unpacks the environme
266.
by aap_ 7y ago
LISP 1.5 as described in the manual implements lexical scope, at least in the interpreter. I haven't studied the compiler too closely, I think there dynamic scope is more prevalent, but as far as I know it has lexical scope as well.
267.
by aap_ 7y ago
And in two months Berlin: http://vcfb.de/2019/index.html.en
268.
by aap_ 7y ago
&c. is my favourite :)
269.
by aap_ 7y ago
From having read lots of disassembled MIPS code I can tell you that they become second nature very quickly.
270.
by aap_ 7y ago
I have to say I'm not an expert on the DEC OSes, so I won't pretend to know the exact timeline, but the PDP-6 was not a very popular machine, only 23 or so sold. So I would assume it's really PDP-10 TOPS-10 that was the inspi

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