Forum comments in chronological order
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Jag tar inget ansvar för det som skrivs i forumet, förutom mina egna inlägg. Vänligen rapportera alla inlägg som bryter mot reglerna, så ska jag se vad jag kan göra. Som regelbrott räknas till exempel förolämpningar, förtal, spam och olagligt material. Mata inte trålarna.
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Fri 1-Jul-2011 04:12
Fri 1-Jul-2011 13:56
How did you build those?
I'm using a so called strip board, which is a board with copper strips on the back. I make the design in postscript, then print it and glue it to the board, and cut the strips as needed. I find it to be a really quick and convenient prototyping method, after breadboards of course.
Fri 1-Jul-2011 14:00
Andre wrote:Also, if I look at these I will need to supply 5 volts on pin 9 http://pinouts.ru/Video/VGAVesaDdc_pinout.shtml
In my experience, if you don't need DDC then you can leave pin 9 floating; all monitors will gladly display the signal anyway.
Fri 1-Jul-2011 14:10
Have you witnessed any synchronization problems with any of the multi-cog video drivers that I wrote? I haven't, myself, and I've never heard anyone else say so. I'm just curious.
Well, I haven't been able to try your video drivers, since the propeller development software is windows-only, which means I'm stuck with homemade tools. Writing an assembler was straight forward, but I'm not motivated to write a spin compiler.
However, I do get metastability problems when using your synchronisation technique verbatim, as documented on this page. It seems far-fetched that the surrounding code would somehow make it stable, but this is of course speculation either way.
Thank you! Yes, the next version of the Propeller is definitely interesting!
Fri 1-Jul-2011 14:16
Wow, good catch! While this was a mistake on my part, it's rather striking that it went by undetected for almost four years. Clearly, if the point of syntax highlighting is to make errors stand out, didn't we just witness a rather spectacular failure?
Fri 1-Jul-2011 14:21
This is basically correct, but you also have to mask the result to reduce it to 4-bit resolution for that characteristic NES sound, and level shift it so it's centered around zero, since it will be subject to signed multiplication volume scaling later. Also, my triangle generator supports ring modulation with a global carrier wave, which adds another couple of instructions.
Fri 1-Jul-2011 14:31
Some monitors provide support for 1V peak-to-peak signals,
but they are not standardized.
So why not 0.7v in your calculations?
Hmm, you are quite right. The answer is that it's a mistake. However, my setup is working, and a possible explanation might be that the digital signals are current limited or have an internal resistance that compensates for this error.
And a there are less R's than 2R's,
so less waste than putting two R's in series to make 2R
Sat 2-Jul-2011 03:14
can I buy anything from you??
Sat 2-Jul-2011 08:48
can I buy anything from you??
I <3 tim!
Mon 11-Jul-2011 03:41
Mon 11-Jul-2011 16:18
Tue 12-Jul-2011 13:16
Wed 13-Jul-2011 09:53
Wed 13-Jul-2011 10:22
Wed 13-Jul-2011 17:09
Firstly, as for your last comment, your syntax highlighting was presumably done manually. Any failure to catch errors if because they were not caught at the time of the highlighting, not because the sentence is syntactically wrong.
Secondly, your argument mostly makes sense, but I think your premises are wrong.
I tend to skim my code to find my place, and I assume every coder does this. It would be monumentally wasteful to read through even a twenty line block just to find that string that you want to change, or the type of the variable you're using, or to give public access to a member, or whatever.
Basic error spotting aside, syntax highlighting functions less for me like your "highlighted fiction", and more like your bolded and/or enlarged headings which assist me in referencing specific parts of the argument without having to retrace the whole thing.
There may be other ways to achieve this goal (eg using headers and spacing, like in prose)
Furthermore, I find that without it, I can more easily go into "autopilot" and skim -- it draws my attention to what's actually happening, on some level, instead of just reading the words. And the defaults in the IDEs I've used are generally toned down enough (even when they're quite bold) that they're not distracting. In code (which is layed out and parsed very differently to prose) I can quite easily read the words while ignoring the colours (except, perhaps, on a semi sub-conscious level where they direct me semantically as well).
That said, the basic argument that form should be subservient to function, I agree. And I always suggest that new programmers do without any sort of IDE or feature-rich text-editting, because I agree that it's important not to need that crutch when starting out.
Wed 13-Jul-2011 19:29
3.The Java program multiplies two numbers given as arguments. Example:
5. laban@femto:~/tmp$ java Main 238 13
8.The multiplication is done using "Ancient Egyptian multiplication", see <http://en.wikipedia.org/wiki/Ancient_Egyptian_multiplication>.
10.The recurse() function is always called 30 times. The last time it will raise a java.lang.ArithmeticException because a division by zero occurs when n = 0.
12.The exception from the example above looks as follows:
13. java.lang.ArithmeticException: / by zero
14. at Main.recurse(Main.java:5)
15. at Main.recurse(Main.java:7)
16. at Main.recurse(Main.java:5)
17. at Main.recurse(Main.java:5)
18. at Main.recurse(Main.java:7)
19. at Main.recurse(Main.java:7)
20. at Main.recurse(Main.java:7)
21. at Main.recurse(Main.java:7)
22. at Main.recurse(Main.java:7)
23. at Main.recurse(Main.java:7)
24. at Main.recurse(Main.java:7)
25. at Main.recurse(Main.java:7)
26. at Main.recurse(Main.java:7)
27. at Main.recurse(Main.java:7)
28. at Main.recurse(Main.java:7)
29. at Main.recurse(Main.java:7)
30. at Main.recurse(Main.java:7)
31. at Main.recurse(Main.java:7)
32. at Main.recurse(Main.java:7)
33. at Main.recurse(Main.java:7)
34. at Main.recurse(Main.java:7)
35. at Main.recurse(Main.java:7)
36. at Main.recurse(Main.java:7)
37. at Main.recurse(Main.java:7)
38. at Main.recurse(Main.java:7)
39. at Main.recurse(Main.java:7)
40. at Main.recurse(Main.java:7)
41. at Main.recurse(Main.java:7)
42. at Main.recurse(Main.java:7)
43. at Main.recurse(Main.java:7)
44. at Main.recurse(Main.java:7)
45. at Main.main(Main.java:12)
47.Note the line numbers in the stack trace. The line number is 5 or 7 depending on if the 31st least significant bit in x is set or not. If you add debug code in the recurse() function, the line numbers might change and the program will stop working. :)
49.The catch block in the code will perform the multiplication according to the "Ancient Egyptian" algorithm.
Thu 14-Jul-2011 05:15
cc -O -fast -m64 -xarch=sse2a -xvector=simd -lcurses -m64 -o freecell freecell.o gameno.o
It's the line ./configure tried to use, but with -lcurses added.
Fri 15-Jul-2011 00:23
Sun 17-Jul-2011 15:31
In the digital domain, you'd use some kind of quadrature encoder and process the pulses directly. But unless you can actuate it directly over the distance of pedal travel, you're going to have some kind of mechanical system to convert a dozen degrees of rotation or a couple of cm of travel into 256 MIDI values. Look for components which will tolerate a million cycles of use.
An easier solution would be to use polarising filters on a drum assembly. Cheap and cheerful and long lasting.
Great work by the way. You need to speak to access-music.de. They'll sign you up.
Tue 19-Jul-2011 10:45
That particular feat is achieved by linking with libSDL, then calling SDL_SetVideoMode (with SDL_FULLSCREEN), and at the end of the program calling SDL_Quit.
Wed 20-Jul-2011 14:54
Tue 26-Jul-2011 03:40
-- Yann Vernier / LoneTech
Tue 26-Jul-2011 03:42
What I would like to see is a lib for the MEGA8. We just flash it and can do the following for example:
- setCircle(x,y,radius, color, bfill)
- setText(x,y,cString, color, ...)
- other handy stuff
Hi! The main problem with this approach is that the chip would have to keep track of a frame buffer. 1 kB of RAM is not a lot. Even if we opt for a simple black and white bitmap, there would only be room for 128 x 64 pixels. One alternative would be to use a tiled display, but without external RAM it would still be very limited.
Once we start using external RAM, we can do lots of things, and that area has been explored by others in several projects.
Thu 28-Jul-2011 18:27
I heard the music of Comic Bakery in your video. Сan you put this part of the soundtrack to a file for download? Or maybe you can make a new longer Comic Bakery soundtrack performed by chipophone?
With respect, from russia.
Fri 29-Jul-2011 03:45
Fri 29-Jul-2011 21:58