yay, we had a a stack collission. Works now.

gg.c

@@ -28,10 +28,10 @@ void timer_init_tiny26(void)
 	TIMSK = 1 << TOIE1;/* interrupt on overflow */
 }
 
-#define BUFFER_SIZE 32
+#define BUFFER_SIZE 16
 uint16_t buffer[BUFFER_SIZE];/* buffer for mmc data */
 ringbuf_t rb;
-uint32_t length;/* remaining samples */
+int32_t length;/* remaining samples */
 
 /*ISR(TIMER1_OVF1_vect, ISR_NAKED)
 {
@@ -58,7 +58,7 @@ ISR(TIMER1_OVF1_vect){
     if(!--cnt_to_next){
         ringbuf_get(&rb, &next);
         OCR1B = next>>8;
-        cnt_to_ocr_incr = 8 - (next & 0x7);
+        cnt_to_ocr_incr = 8 - ((next>>5) & 0x7);
         cnt_to_next = 8;
 /*        if(!--length)
         {
@@ -90,25 +90,19 @@ int main(void)
 	timer_init_tiny26();
 	sei();
     _delay_ms(1);
-    char_to_sound(25);
 	
-    debug = mmc_read_part(1, (unsigned char *) &length, 4);
-    debug = 1;
-    if(length==0){
-        debug = 2;
-    }
-    char_to_sound((length>>24) & 0xff);
     mmc_read_part(0, (unsigned char *) &length, 4);
-    char_to_sound((length>>8) & 0xff);
 
 	
 	
-/*    
+
 	unsigned long block = 0;
-	for(;; block++)
+	while(length > 0)
 	{
 		//mmc_read_to_ringbuffer(block, &rb);
-		mmc_read_to_ringbuffer(0, &rb);
+		mmc_read_to_ringbuffer(block, &rb);
+        length -= 256;
+        block++;
 	} // */
 //    debug = 0;
 

mmc.h

@@ -14,7 +14,7 @@ Copyright (C) 2004 Ulrich Radig
 
 //#define SPI_Mode			1		//1 = Hardware SPI | 0 = Software SPI
 #define SPI_Mode			0
-#define WAIT_HALF_CLOCK _delay_us(0.5)
+#define WAIT_HALF_CLOCK _delay_us(0.1)
 #define WAIT_HALF_CLOCK_SLOW _delay_us(20)
 
 #define MMC_Write			PORTA	//Port an der die MMC/SD-Karte angeschlossen ist also des SPI