Search found 14 matches

by HeavyDude
Fri Sep 30, 2011 12:54 pm
Forum: DS/DSi Development
Topic: Example file warnings...
Replies: 4
Views: 4085

Re: Example file warnings...

I get loads of them even though the variable has been initialised, more often than not it's due to the flow of your code.
by HeavyDude
Sat Jul 30, 2011 1:00 pm
Forum: Off Topic
Topic: NO$GBA hates the "push sp" instruction, libgcc uses it
Replies: 5
Views: 9472

Re: NO$GBA hates the "push sp" instruction, LibGCC uses it

Surely you should be reporting this to the authors of NO$GBA. If development has stopped then thats tough luck.

Use another emulator (or use a DS... just a thought).
by HeavyDude
Fri Jul 29, 2011 2:38 pm
Forum: devkitARM
Topic: Optimising code
Replies: 1
Views: 1909

Optimising code

When writing for the DS what are the main things to avoid to ensure as the code is fast as possible?

For example I've heard that ARM doesn't like multiplying and dividing so is '<<' (i.e. z=x<<2;) a problem?
by HeavyDude
Wed Jul 27, 2011 11:58 am
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Re: Problems with sound

Just to say thanks to elhobbs for his invaluable advice and assistance. I managed to produce noise and now it's full steam ahead with my little project (which will probably end up as vapourware :lol: ).

Thanks again elhobbs.
by HeavyDude
Mon Jul 25, 2011 11:54 pm
Forum: DS/DSi Development
Topic: Reading/Writing Files
Replies: 17
Views: 9785

Re: Reading/Writing Files

Unless I'm very much mistaken you have to be using a real DS rather than an emulator.
by HeavyDude
Mon Jul 25, 2011 3:16 pm
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Re: Problems with sound

Ok, thanks for the advice.

I suspect I will be back to ask more daft questions.
by HeavyDude
Mon Jul 25, 2011 2:30 pm
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Re: Problems with sound

I assume I use fifoSendAddress and fifoGetAddress but the bit I don't get is the uncached region of main system memory, (a) how to access it and (b) how to write to it.
by HeavyDude
Mon Jul 25, 2011 2:21 pm
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Re: Problems with sound

Ok, that makes sense.

Any chance of a bit of code to point me in the right direction?
by HeavyDude
Mon Jul 25, 2011 1:25 pm
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Re: Problems with sound

Thanks for the quick reply. When I say removing iprintf I mean just deleting it and recompiling. Which leads me to think that iprintf was slowing things down allowing the FIFO buffer to empty before being refilled so I could be overflowing the FIFO buffer, filling it faster than it can empty itself....
by HeavyDude
Mon Jul 25, 2011 12:22 pm
Forum: DS/DSi Development
Topic: Problems with sound
Replies: 8
Views: 4211

Problems with sound

Right first the disclaimer. I know very little about sound and I'm just experimenting. I'm playing around with the sound registers and FIFO, just seeing what I can do. The code below runs fine and produces sound but when I remove the iprintf I just get silence. Can someone please explain why and how...