Difference between revisions of "Hardware/Macronix DSP"

Latest revision as of 02:11, 29 January 2025

Macronix DSP is a 16 bit programmable DSP(Slave Processor) in the Nintendo GameCube\Wii\Wii U it was manufactured by Macronix. It has it's own ADPCM hardware decoder to off load the DSP. 16 MB of ARAM stores PCM\ADPCM, but ARAM also can store extra data such as textures, animations, data, for example.

Macronix DSP microcode is written in assembly you will require a assembler to assemble your code. asnd & aesnd is the homebrew dsp microcode that exists in libogc for the Nintendo GameCube\Wii, can mix up to 64 channels(AX\JAudio) and 16 or 32 channels(ASnd\AESnd) respectively in software.

JAudio(JSystem) DSP microcode also seems to contain these types

SRC_SQUARE_WAVE
SQUARE_WAVE_25PCT
SAW_WAVE
PCM8
PCM16
DSP-ADPCM

DSP Specs

 Clock: 81MHz(GC) or 121.5MHz(Wii)
 Bits: 16bit
 Endian: Big
 Data RAM: 8KB
 Data ROM: 4KB
 Instruction RAM: 8KB
 Instruction ROM: 8KB (Macronix, Nintendo)
 Hardware Decoder: DSP-ADPCM

DSP Programs

 Bootrom IPL microcode x2 (Macronix, Nintendo)
 DSP ARAM/Init microcode
 Memory Card microcode - handles memory card security & unlocking
 Audio System(AX) microcode - mixing, filters, Dolby logic pro II, effects done on CPU
 JAudio(JSystem) microcode - mixing, filters, Dolby logic pro II, effects done on DSP
 GBA Multiboot microcode - decrypts GBA multiboot program

Homebrew DSP Programs

 ASnd microcode - mixing
 AESnd microcode - mixing

@@ Line 1: / Line 1: @@
-Macronix DSP is a 16 bit programmable DSP coprocessor in the Nintendo GameCube\Wii it was manufactured by Macronix.
+Macronix DSP is a 16 bit programmable DSP(Slave Processor) in the Nintendo GameCube\Wii\Wii U it was manufactured by Macronix.
 It has it's own ADPCM hardware decoder to off load the DSP.
-It stores raw DSP data in the 16 MB of ARAM along with audio data, but ARAM also can store extra data such as textures, animations, for example.
+MB of ARAM stores PCM\ADPCM, but ARAM also can store extra data such as textures, animations, data, for example.
-Macronix DSP microcode is written in assembly you will require a assembler to assemble your code. asnd & aesnd is the homebrew dsp microcode that exist in devkitpro for the Nintendo GameCube.
+Macronix DSP microcode is written in assembly you will require a assembler to assemble your code. asnd & aesnd is the homebrew dsp microcode that exists in libogc for the Nintendo GameCube\Wii, can mix up to 64 channels(AX\JAudio) and 16 or 32 channels(ASnd\AESnd) respectively in software.
 JAudio(JSystem) DSP microcode also seems to contain these types
@@ Line 14: / Line 14: @@
 == DSP Specs ==
-   Clock: 81MHz
+   Clock: 81MHz(GC) or 121.5MHz(Wii)
    Bits: 16bit
    Endian: Big
@@ Line 22: / Line 22: @@
    Instruction ROM: 8KB (Macronix, Nintendo)
    Hardware Decoder: DSP-ADPCM
-  Channels: 64
-  Sampling Frequency: 48KHz
 == DSP Programs ==
@@ Line 29: / Line 27: @@
    DSP ARAM/Init microcode
    Memory Card microcode - handles memory card security & unlocking
-   Audio System(AX) microcode - mixing, filters, Dolby logic pro II
+   Audio System(AX) microcode - mixing, filters, Dolby logic pro II, effects done on CPU
-   JAudio(JSystem) microcode - mixing, filters, Dolby logic pro II, effects, channels, GBA in some games
+   JAudio(JSystem) microcode - mixing, filters, Dolby logic pro II, effects done on DSP
    GBA Multiboot microcode - decrypts GBA multiboot program
@@ Line 36: / Line 34: @@
    ASnd microcode - mixing
    AESnd microcode - mixing
-== Cyndanera Engine DSP Programs ==
-  Sarah microcode - mixing, filters, Dolby logic pro II, effects, channels, FM & PSG\Noise synth, GBA
-  MPEG 1/2 microcode - decoding mpeg video
 [[Category:Hardware]]