Dreamcast-Talk.com

Posted: **Sat Nov 25, 2023 4:45 pm**

Writing a Sound Driver for the Sega Dreamcast Sound Processor(AICA)
Programmed in C & ARM Assembly

Posted: **Sun Nov 26, 2023 6:23 pm**

That is fantastic! Keep up the good work!!!

Posted: **Tue Nov 28, 2023 2:03 am**

christuserloeser wrote:That is fantastic! Keep up the good work!!!

Thank you!

Also here's a pic of my physical copy of ARM Software Developer Toolkit 2.51

Posted: **Sun Dec 03, 2023 9:59 pm**

Cyndanera wrote:
christuserloeser wrote:That is fantastic! Keep up the good work!!!
Thank you! example
Also here's a pic of my physical copy of ARM Software Developer Toolkit 2.51

That is absolutely great! Don't let up on the solid work!!!

Posted: **Sun Dec 10, 2023 6:33 pm**

Noah101 wrote:
Cyndanera wrote:
christuserloeser wrote:That is fantastic! Keep up the good work!!!
Thank you! example
Also here's a pic of my physical copy of ARM Software Developer Toolkit 2.51
That is absolutely great! Don't let up on the solid work!!!

Thanks I also got more pics of it for you guys to see

Posted: **Wed Dec 27, 2023 6:39 pm**

Cyndanera wrote:ToDo list:
Add FM(YM3438), PSG, and Noise support

That'd be amazing! Keep up the good work!

Posted: **Thu Apr 18, 2024 6:48 pm**

Here's some updates on the software and hardware, pics I thought you guys would enjoy!

I now use ARM Developer Suite 1.2 aka Metrowerks Codewarrior for ARM and in the process in ordering debugging hardware for ARM boards.
I got ARM Developer Suite 1.2 missing disc 2 files from ARM Support, they were very helpful even when it was no longer supported.

I also use this stuff when I'm working on ARM based Electronics.

Posted: **Fri Apr 19, 2024 3:28 pm**

Here's my DSP IDE, I've been working on.
If we can make a DSP Assembler for Saturn or Dreamcast I can custom my DSP IDE code for these sound chips.

Posted: **Thu Jul 25, 2024 10:26 am**

If anyone has reverse engineering info or docs, tools on the Dreamcast DSP, please feel free to share with me so I can write DSP microcode, thanks.

I currently have updated the sound driver a bit.
Using ARM Developer Suit 1.2(ADS)

Supported:
64 Channels
ADSR, Mixing, Resampling
Volume, Panning and Pitch Control
Music Sequence(midi like)
Sequence Archives(used for SFX)
Sound Banks(Instrument Data)
Wave Data Archives(Samples)
Streams(PCM, ADPCM)

ToDo list:
Add FM(YM3438), PSG, and Noise
Add Dolby Pro Logic II
Add Reverb
Write DSP microcode for the Sound driver

Yamaha ACIA Chip:
DSP Processor

Code: Select all

            128 step
            Dynamically loadable
            Multiple effects
                Reverb, Chorus, Flange
                Delay, Parametric EQ., etc.
                Q-Sound
        18 channel digital mixer
            level and pan

ARM7 Embedded Processor(ARM7DI)

Code: Select all

            32bit
            25 MHz/17 MIPS
            2 MB Memory
            shared by
                Sound driver
                PCM/Tone Data
                DSP Program and Work RAM
                Streaming Buffers
                Sequence Data

Posted: **Fri Aug 02, 2024 7:46 pm**

Inside the Sega Dreamcast Yamaha AICA Sound chip
Be sure to checkout this doc!

https://segaretro.org/File:AICA_E.pdf

Dreamcast-Talk.com

Developing a Sega Dreamcast AICA Sound Driver

Developing a Sega Dreamcast AICA Sound Driver

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Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver

Re: Developing a Sega Dreamcast AICA Sound Driver