aap_

16 ms·

181.
by aap_ 4y ago
The pdp-1 has two architectural registers: AC and IO and they're not addressable as memory. The PDP-10 has a similar internal structure but fetches and stores the accumulator from/to memory* for instructions that use it. * in the
182.
by aap_ 4y ago
If you have a program 'finddir' that just prints out the directory, you could simply to 'cd `finddir`' or make that a shell alias 'ncd'.
183.
by aap_ 4y ago
The chronology is wrong. dash-options came before pipes. The first edition already has them while pipes came in the third edition.
184.
by aap_ 4y ago
That's an implementation detail. The submission was about architecture.
185.
by aap_ 4y ago
You mean as opposed to the other architectures mentioned in the article? ppc, mips, itanium and alpha. Two of which are utterly dead, one of which looks like it's dying (mips) and one that is little more than a niche product (ppc).
186.
by aap_ 4y ago
I wouldn't say the x86 is the weirdo in these cases, it's just not a RISC.
187.
by aap_ 5y ago
check https://github.com/larsbrinkhoff/terminal-simulator for a similar thing.
188.
by aap_ 5y ago
That's so cool. Just a few months ago I reversed a bit of the GOAL runtime in an effort to understand how it worked (aap/goal on github) but I didn't dream of seeing everything decompiled. great work
189.
by aap_ 5y ago
> 7. I've observed the direction of the toilet swirl, and whirlpools in lakes. this is not an indication of a round earth. the coriolis effect on this is negligible.
190.
by aap_ 5y ago
I would disagree on that. Parsing theory made it easier to write parsers, not harder. Separating the process into lexical and syntactic analysis makes for a much clearer structure than some ad-hoc parser. And writing a recursive descent par
191.
by aap_ 5y ago
The PDP-10 has variable width byte pointers, but 8 bit bytes are what caught on.
192.
by aap_ 5y ago
> Although the exact origins of the names for car and cdr are lost in the mists of time This is absolutely wrong. If you read AI memo 1 you will find a bunch of functions: cwr, cpr, csr, cir, cdr, ctr, car, cbr, csgr. These return variou
193.
by aap_ 5y ago
I wrote a B compiler: https://github.com/aap/b it generates the original threaded code and has a runtime for amd64, mips32 and riscv64. should get the pdp-11 one working too sometime... Documented the original pdp-7 an
194.
by aap_ 5y ago
> The lineage is more like OS-8 -> TOPS-10 -> CP/M -> DOS TOPS-10 predates OS-8
195.
by aap_ 5y ago
Huh? does SPARC even support little endian?
196.
by aap_ 5y ago
The B version for the Honeywell 6070 was compiled. B on the PDP-7 and -11 was interpreted. In fact I have a writeup on the threaded code for these two: http://squoze.net/B/
197.
by aap_ 5y ago
jfo is Joe Ossanna, the author of troff who died in 1977.
198.
by aap_ 5y ago
Maybe join us in #pdp-10 on freenode :)
199.
by aap_ 5y ago
Have you considered looking into PDP-6/10 spacewar? We have two versions using the 340 display (which I've even played with friends, sadly not on a real 340 of course) and one for the Knight TV.
200.
by aap_ 6y ago
The first B compiler was actually written in TMG, and once it was bootstrapped that way in B itself. BCPL was only the inspiration for the language.
201.
by aap_ 6y ago
There was no first computer. The further you go back the less it becomes a computer, the further you go forward the less it becomes a first. I can really recommend the book "ENIAC in Action" on this matter and of course on the ENI
202.
by aap_ 6y ago
I got to play with one of these two years ago for a bit. Quite a fun machine!
203.
by aap_ 6y ago
That's true, though I did write a replacement for RW. It's not an exact copy but it does the job.
204.
by aap_ 6y ago
Not exactly CSV but close. The good thing is now you get to see the...less than optimal code that reads this file: https://github.com/GTAmodding/re3/blob/master/src/vehicles/H...
205.
by aap_ 6y ago
Thank you for your input! For shaders I'm never sure if I should do something dynamically or switch to a different shader, but it makes sense of course to kill the alpha test code if it's not used. As for MSAA, our support for tha
206.
by aap_ 6y ago
There have been emscripten ports of this already. Distributing the assets is probably the most problematic thing.
207.
by aap_ 6y ago
I think everybody did the thing he was interested in most. For me that was rendering, physics, vehicles, camera and ps2 specific stuff like VU0 collision detection.
208.
by aap_ 6y ago
Pretty much, but also our goal is to recreate the code in a way that R* could have plausibly written it. And that implies no C++11.
209.
by aap_ 6y ago
R* was a lot more open at the time and I guess they wanted to help them implement a multiplayer mode. that was before the whole hot coffee story.
210.
by aap_ 6y ago
Of course you can create new assets.

More ›