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updated EEPROM code, gmv fixed
[picodrive.git]
/
Pico
/
cd
/
pcm.c
diff --git
a/Pico/cd/pcm.c
b/Pico/cd/pcm.c
index
2b818e0
..
6ac493a
100644
(file)
--- 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
#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);
{
//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;
{
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;
{
struct pcm_chan *ch;
unsigned int step, addr;