Overview Features Coding Performance Forum Downloads Products OrderV4 Contact

Welcome to the Apollo Forum

This forum is for people interested in the APOLLO CPU.
Please read the forum usage manual.



All TopicsNewsPerformanceGamesDemosApolloVampireAROSWorkbenchATARIReleases
Information about the Apollo CPU and FPU.

Arnes Amiga Assembly Course 001

Arne von Boehn

Posts 23
15 Jun 2021 19:04


Hello my name is Arne von Boehn ,
im 14 years old and i love Amiga!
i like Amiga and like coding in assembly
today please let me show you how easy it is to play music on Amiga





Bartek Kuchta

Posts 37
15 Jun 2021 20:10


Now, this is something! Thank you, Arne. I just can't wait to see more:)


Marco Bruines

Posts 19
16 Jun 2021 00:13


Explanation and examples will certainly help other to get started. Keep up the good work, is appreciated!


Robert Pulfer-Ridings

Posts 51
16 Jun 2021 05:35


Good job, keep up the good work d:)


Andrew Miller

Posts 292
16 Jun 2021 13:42


this is great, really what I have been looking for to get me started.
Looking forward to the rest.


Kamelito Loveless

Posts 195
16 Jun 2021 14:04


Arne, first nice stuff thanks for sharing.
Thereís one thing I donít understand :
The file song in bytes in decimal is 35352892
As $DFF404 is in 32 bit that give use a length equal to 223169060
So why is $DFF404 value is decimal 4419111 ?
Even if the value is two words like on the Amiga that would give us 8832222

So what am I missing?
Thanks


Arne von Boehn

Posts 23
16 Jun 2021 15:42


Kamelito Loveless wrote:

  Arne, first nice stuff thanks for sharing.
    Thereís one thing I donít understand :
    The file song in bytes in decimal is 35352892
    As $DFF404 is in 32 bit that give use a length equal to 223169060
    So why is $DFF404 value is decimal 4419111 ?
    Even if the value is two words like on the Amiga that would give us 8832222
 

 
  Hello Kamelito Loveless ,
  thanks for your detailed look!
  It's so in Stereo mode, the size is * 8 because it plays a pair of 2 samples each(rights lefts/left right)
 
 
 
 
 
 



DiscreetFX Studios

Posts 89
16 Jun 2021 21:25


Really nice course, thank you for posting it.


Kamelito Loveless

Posts 195
16 Jun 2021 21:46


@Arne thanks for your quick answer, looking forward for more of these :)

posts 9