betreffende Routinen:
u08 read_eeprom(uint16_t addr)
{ u08 temp1;
loop_until_bit_is_clear(EECR,EEWE);
temp1 = (u08) addr;
/*printf("LowAddr: %d\n",temp1);*/
EEARL = temp1;
addr >>= 8;
temp1 = (u08) addr;
/*printf("HighAddr: %d\n",temp1);*/
EEARH = temp1;
/*printf("Setting EERE...\n");*/
EECR |= (1 <<0);
/*loop_until_bit_is_clear(EECR,EERE);*/
/*printf("Reading EEDR...\n"); */
temp1 = EEDR;
/*printf("Value: %d\n",temp1);*/
return temp1;
}

void write_eeprom(uint16_t addr, u08 val)
{
loop_until_bit_is_clear(EECR,EEWE);
cli();
EEARL = (u08) addr;
addr >>= 8;
EEARH = (u08) addr;
EEDR=val;
EECR = 4;
EECR = 6;
sei();
return;
}




generiertes Assembler-Listing:
 185                    read_eeprom:
 186                    /* prologue: frame size=0 */
 187                    /* prologue end (size=0) */
 188                    .L15:
 189 010c E199                  sbic 60-0x20,1
 190 010e FECF                  rjmp .L15
 191 0110 8EBB                  out 62-0x20,r24
 192 0112 892F                  mov r24,r25
 193 0114 9927                  clr r25
 194 0116 8FBB                  out 63-0x20,r24
 195 0118 E09A                  sbi 60-0x20,0
 196 011a 8DB3                  in r24,61-0x20
 197 011c 9927                  clr r25
 198                    /* epilogue: frame size=0 */
 199 011e 0895                  ret
 200                    /* epilogue end (size=1) */
 201                    /* function read_eeprom size 10 (9) */
 202                            .size   read_eeprom, .-read_eeprom
 203                    .global write_eeprom
 204                            .type   write_eeprom, @function
 205                    write_eeprom:
 206                    /* prologue: frame size=0 */
 207                    /* prologue end (size=0) */
 208                    .L20:
 209 0120 E199                  sbic 60-0x20,1
 210 0122 FECF                  rjmp .L20
 211                    /* #APP */
 212 0124 F894                  cli
 213                    /* #NOAPP */
 214 0126 8EBB                  out 62-0x20,r24
 215 0128 892F                  mov r24,r25
 216 012a 9927                  clr r25
 217 012c 8FBB                  out 63-0x20,r24
 218 012e 6DBB                  out 61-0x20,r22
 219 0130 84E0                  ldi r24,lo8(4)
 220 0132 8CBB                  out 60-0x20,r24
^LGAS LISTING /tmp/cc9XA5SB.s                   page 5


 221 0134 86E0                  ldi r24,lo8(6)
 222 0136 8CBB                  out 60-0x20,r24
 223                    /* #APP */
 224 0138 7894                  sei
 225                    /* #NOAPP */
 226                    /* epilogue: frame size=0 */
 227 013a 0895                  ret