X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2Fcd%2Fpcm.c;h=6ac493aa05f56d11565e6501f6152ab008a057f2;hb=9a8ffeeeea54301c5289fd510aece552175ce13d;hp=2b818e01771a9d21904e50c3594e67f43805efbd;hpb=68cba51e206ea6089e8ebc04d7dcd9980bc9575c;p=picodrive.git

diff --git a/Pico/cd/pcm.c b/Pico/cd/pcm.c
index 2b818e0..6ac493a 100644
--- a/Pico/cd/pcm.c
+++ b/Pico/cd/pcm.c
@@ -1,9 +1,13 @@
+// Emulation routines for the RF5C164 PCM chip.
+// Based on Gens code by Stéphane Dallongeville
+// (c) Copyright 2007, Grazvydas "notaz" Ignotas
+
 #include "../PicoInt.h"
 #include "pcm.h"
 
 static unsigned int g_rate = 0; // 18.14 fixed point
 
-void pcm_write(unsigned int a, unsigned int d)
+PICO_INTERNAL_ASM void pcm_write(unsigned int a, unsigned int d)
 {
 //printf("pcm_write(%i, %02x)\n", a, d);
 
@@ -46,7 +50,7 @@ void pcm_write(unsigned int a, unsigned int d)
 }
 
 
-void pcm_set_rate(int rate)
+PICO_INTERNAL void pcm_set_rate(int rate)
 {
 	float step = 31.8 * 1024.0 / (float) rate; // max <4 @ 8000Hz
 	step *= 256*256/4;
@@ -56,9 +60,7 @@ void pcm_set_rate(int rate)
 }
 
 
-// TODO: make use of the fact that max_length == 3
-
-void pcm_update(int *buffer, int length, int stereo)
+PICO_INTERNAL void pcm_update(int *buffer, int length, int stereo)
 {
 	struct pcm_chan *ch;
 	unsigned int step, addr;