Hi all, I have a program for my STR710 MCU that is running fine. I added the following function: void Initialisation_INT(void)< EIC_FIQConfig(DISABLE); EIC_IER0 &= 0x0000; /**Disable all unused IRQ interruptsin the EIC_ICR reg****/ /***vullen van SIR reg*****/ EIC->SIR[T0TIMI_IRQChannel] = ((u16)T0TIMI_IRQHandler << 16);< EIC->SIR[FLASH_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[RCCU_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[RTC_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[WDG_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[XTI_IRQChannel] = ((u16)XTI_IRQHandler << 16); EIC->SIR[I2C0ITERR_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16); EIC->SIR[I2C1ITERR_IRQChannel]= ((u16)DEFAULT_IRQHandler << 16; EIC->SIR[UART0_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[UART1_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[UART2_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[UART3_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[SPI0_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[SPI1_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[I2C0_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[I2C1_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[CAN_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[ADC_IRQChannel] = ((u16)ADC12_IRQHandler << 16);< EIC->SIR[T1TIMI_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[T2TIMI_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[T3TIMI_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[HDLC_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[USBLP_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< IC->SIR[T0TOI_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC->SIR[T0OC1_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16); EIC->SIR[T0OC2_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< /**Configure and enable IRQ for A/D Converter**/< //EIC->SIR[ADC_IRQChannel] = ((u16)ADC12_IRQHandler << 16);< EIC_IRQChannelConfig(ADC_IRQChannel, ENABLE);< EIC_IRQChannelPriorityConfig(ADC_IRQChannel, 2);< /****Configure and enable IRQ for Timer 0**/< EIC->IVR = (u32)T0TIMI_IRQHandler;< EIC_IRQChannelConfig(T0TIMI_IRQChannel, ENABLE);< EIC_IRQChannelPriorityConfig(T0TIMI_IRQChannel, 1);< /******Configure and enable IRQ for XTI*****/< //EIC configuration EIC_IRQChannelPriorityConfig(XTI_IRQChannel,1);< EIC_IRQChannelConfig(XTI_IRQChannel,ENABLE); } No problem till now. But when I added code to the function. The new function is: void Initialisation_INT(void) { EIC_FIQConfig(DISABLE); EIC_IER0 &= 0x0000; /**Disable all unused IRQ interruptsin the EIC_ICR reg*****/< /**vullen van SIR reg*******/ EIC->SIR[T0TIMI_IRQChannel] = ((u16)T0TIMI_IRQHandler << 16);< EIC->SIR[FLASH_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC_IRQChannelPriorityConfig(FLASH_IRQChannel, 0); EIC->SIR[RCCU_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC_IRQChannelPriorityConfig(RCCU_IRQChannel, 0); EIC->SIR[RTC_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC_IRQChannelPriorityConfig(RTC_IRQChannel, 0); EIC->SIR[WDG_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16);< EIC_IRQChannelPriorityConfig(WDG_IRQChannel, 0);< EIC->SIR[XTI_IRQChannel] = ((u16)XTI_IRQHandler << 16);< /***removed some code, form limited to 7500 char**/ EIC_IRQChannelPriorityConfig(T0TOI_IRQChannel, 0); EIC->SIR[T0OC1_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16); EIC_IRQChannelPriorityConfig(T0OC1_IRQChannel, 0); EIC->SIR[T0OC2_IRQChannel] = ((u16)DEFAULT_IRQHandler << 16); EIC_IRQChannelPriorityConfig(T0OC2_IRQChannel, 0); /***Configure and enable IRQ for A/D Converter****/ //EIC->SIR[ADC_IRQChannel] = ((u16)ADC12_IRQHandler << 16); EIC_IRQChannelConfig(ADC_IRQChannel, ENABLE); EIC_IRQChannelPriorityConfig(ADC_IRQChannel, 2); /****Configure and enable IRQ for Timer 0****/ EIC->IVR = (u32)T0TIMI_IRQHandler; EIC_IRQChannelConfig(T0TIMI_IRQChannel, ENABLE); EIC_IRQChannelPriorityConfig(T0TIMI_IRQChannel, 1); /****Configure and enable IRQ for XTI*****/ //EIC configuration EIC_IRQChannelPriorityConfig(XTI_IRQChannel,1); EIC_IRQChannelConfig(XTI_IRQChannel,ENABLE); } After added this code I receive a error while compiling.< The error: compiling GVPFILL.C... linking... *** ERROR L107: ADDRESS SPACE OVERFLOW SPACE: CODE SEGMENT: ?PR?C?SDIV LENGTH: 00000060H *** ERROR L138: CODE GENERATION: PROBLEM WHEN PROCESSING INSTRUCTIONS CAUSE: Target is out of Range SEGMENT: ?PR?ghw_setptr?T?GHWINIT ADDRESS: 02000400CH Program Size: data=9483 const=9914 code=31044 Target not created If I limit the number of function calls in this function by 1/3 then I do not receive the errors any more. It makes no difference if I limit the code by deleting the upper, middle or lower 1/3 part of the code in this function. It works in all cases. Does somebody have an idea what the problem could be? regards Erik