made it compile

.gitignore

@@ -2,3 +2,6 @@
 /*.d
 headeredit
 /*.o
+/disasm
+/firmware.bin
+/firmware.hex

Makefile

@@ -1,4 +1,4 @@
-CFLAGS += -Wall -Os  -I. -mmcu=attiny26 
+CFLAGS += -Wall -Os  -I. -mmcu=attiny26 -std=c99
 DEFINES += -DF_CPU=16e6
 
 OBJECTS = gg.o mmc.o

gg.c

@@ -1,44 +1,14 @@
 #include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
 
 #include "mmc.h"
 
-void timer_init_mega16(void)
-{
-	ICR1 = (1 << 11) - 1;/* 11 bit pwm */
-	OCR1A = 0;
-	TCCR1A = (1 << COM1A1) | (1 << CS10) | (1 << WGM11);/* fast pwm, non inverted, top in ICR1 */
-	TCCR1B = (1 << WGM13) | (1 << WGM12) | (1 << CS10);/* fast pwm, top in ICR1,  */
-	DDRD |= (1 << PD5);/* set pwm pin as output */
-	TIMSK = 1 << TOIE1;/* interrupt at top */
-}
-
-void timer_init_tiny45(void)
-{
-	PLLCSR = 1 << PLLE;/* pll enable */
-	delay_us(100);
-	while(!(PLLCSR & (1 << PLOCK))) {;}/* wait for lock */
-	PLLCSR |= 1 << PCKE;/* use pll */
-	
-	OCR1C = 0xff;
-	
-	/* output pin: OC1A = PB1 = 6 */
-	OCR1A = 0;
-	TCCR1 = (1 << PWM1A) | (1 << COM1A1) | (1 << CS10);/* pwm enable, non inverted, no prescaler */
-	DDRB |= (1 << PB1);
-	
-	/* output pin: OC1B = PB5 = 3 */
-	//OCR1B = 0;
-	//TCCR1 = (1 << CS10);/* no prescaler */
-	//GTCCR = (1 << PWM1B) | (1 << COM1B1);/* pwm enable, non inverted */
-	//DDRB |= (1 << PB5);
-	
-	TIMSK = 1 << TOIE1;/* interrupt on overflow */
-}
 
 void timer_init_tiny26(void)
 {
 	PLLCSR = 1 << PLLE;/* pll enable */
-	delay_us(100);
+	_delay_us(100);
 	while(!(PLLCSR & (1 << PLOCK))) {;}/* wait for lock */
 	PLLCSR |= 1 << PCKE;/* use pll */
 	
@@ -46,7 +16,7 @@ void timer_init_tiny26(void)
 	
 	/* output pin: OC1A = PB1 = 1 or OC1B = PB3 = 2 */
 	OCR1A = 0;
-	TCCR1A = (1 << COM1A1) (1 << PWM1A);/* pwm enable, not inverted */
+	TCCR1A = (1 << COM1A1) | (1 << PWM1A);/* pwm enable, not inverted */
 	TCCR1B = (1 << CS10);/* fast pwm, no prescaler */
 	DDRB |= (1 << PB1);
 	
@@ -55,7 +25,7 @@ void timer_init_tiny26(void)
 
 
 uint8_t length[4];/* remaining samples */
-uint8_t mmc_position[4];/* current reading position on mmc */
+uint32_t mmc_position;/* current reading position on mmc */
 
 uint8_t overflows = 1;/* remaining counter overflows until next sample */
 #define SAMPLE_BITS 11
@@ -68,7 +38,7 @@ uint8_t buffer[BUFFER_SIZE];/* buffer for mmc data */
 uint8_t pos = 0;/* current playing position */
 uint8_t refresh_buffer = 0;/* position to start buffer refreshing */
 
-timerinterrupt()
+ISR(TIMER1_OVF1_vect)
 {
 	//if(!(TIFR & (1 << TOV1))) {continue;}/* interrupt flag polling */
 	//TIFR |= (1 << TOV1);/* done by hardware */
@@ -87,8 +57,10 @@ timerinterrupt()
 
 
 
-void main(void)
+int main(void) __attribute__((noreturn));
+int main(void)
 {
+    uint8_t ref; // TODO: what does this do?
 	if(mmc_init() != 0) {/* mmc fail */;}
 	timer_init_tiny26();
 	sei();
@@ -97,7 +69,7 @@ void main(void)
 	{
 		if(pos == refresh_buffer)/* refresh buffer if running low */
 		{
-			mmc_read(mmc_position, buffer + (ref + REFRESH_SIZE) % BUFFER_SIZE, BUFFER_SIZE - ref, buffer, REFRESH_AMOUNT - (BUFFER_SIZE - ref));
+			mmc_read_sector(mmc_position, buffer + (ref + REFRESH_SIZE) % BUFFER_SIZE);//, BUFFER_SIZE - ref), buffer, REFRESH_AMOUNT - (BUFFER_SIZE - ref));
 			/*       pos on sd   , first buffer address                       , 1st buffer size  ,2nd buf, 2nd buffer size                    */
 			refresh_buffer = (refresh_buffer + REFRESH_AMOUNT) % BUFFER_SIZE;
 		}

mmc.h

@@ -9,8 +9,8 @@ Copyright (C) 2004 Ulrich Radig
 
 #include <avr/io.h>	
 
-#define SPI_Mode			1		//1 = Hardware SPI | 0 = Software SPI
+//#define SPI_Mode			1		//1 = Hardware SPI | 0 = Software SPI
-//#define SPI_Mode			0
+#define SPI_Mode			0
 
 #define MMC_Write			PORTB	//Port an der die MMC/SD-Karte angeschlossen ist also des SPI 
 #define MMC_Read			PINB
@@ -40,6 +40,15 @@ Copyright (C) 2004 Ulrich Radig
 	#define SPI_SS				4		//Nicht Benutz muß aber definiert werden
 #endif
 
+#if defined (__AVR_ATtiny26__)
+	#define SPI_DI				6		//Port Pin an dem Data Output der MMC/SD-Karte angeschlossen ist 
+	#define SPI_DO				5		//Port Pin an dem Data Input der MMC/SD-Karte angeschlossen ist
+	#define SPI_Clock			7		//Port Pin an dem die Clock der MMC/SD-Karte angeschlossen ist (clk)
+	#define MMC_Chip_Select		1		//Port Pin an dem Chip Select der MMC/SD-Karte angeschlossen ist
+	#define SPI_SS				4		//Nicht benutzt, muß aber definiert werden
+#endif
+    
+
 //Prototypes
 extern unsigned char mmc_read_byte(void);
 

other_architectures.c

@@ -0,0 +1,33 @@
+
+void timer_init_mega16(void)
+{
+	ICR1 = (1 << 11) - 1;/* 11 bit pwm */
+	OCR1A = 0;
+	TCCR1A = (1 << COM1A1) | (1 << CS10) | (1 << WGM11);/* fast pwm, non inverted, top in ICR1 */
+	TCCR1B = (1 << WGM13) | (1 << WGM12) | (1 << CS10);/* fast pwm, top in ICR1,  */
+	DDRD |= (1 << PD5);/* set pwm pin as output */
+	TIMSK = 1 << TOIE1;/* interrupt at top */
+}
+
+void timer_init_tiny45(void)
+{
+	PLLCSR = 1 << PLLE;/* pll enable */
+	delay_us(100);
+	while(!(PLLCSR & (1 << PLOCK))) {;}/* wait for lock */
+	PLLCSR |= 1 << PCKE;/* use pll */
+	
+	OCR1C = 0xff;
+	
+	/* output pin: OC1A = PB1 = 6 */
+	OCR1A = 0;
+	TCCR1 = (1 << PWM1A) | (1 << COM1A1) | (1 << CS10);/* pwm enable, non inverted, no prescaler */
+	DDRB |= (1 << PB1);
+	
+	/* output pin: OC1B = PB5 = 3 */
+	//OCR1B = 0;
+	//TCCR1 = (1 << CS10);/* no prescaler */
+	//GTCCR = (1 << PWM1B) | (1 << COM1B1);/* pwm enable, non inverted */
+	//DDRB |= (1 << PB5);
+	
+	TIMSK = 1 << TOIE1;/* interrupt on overflow */
+}