Honored Contributor
Honored Contributor[SOLVED] here's how I fixed the problem.
I copied the compilation command from monitor program in info & Errors window and pasted in nios2 command shell and it compiled the program with no error. Now my program works but 1 problem still remains; In the compilation command there's a option -mno-cache-volatile. nios2 Command shell complains that this option is not known so I have to remove it. here's the full command: nios2-elf-gcc -g -O1 -ffunction-sections -fverbose-asm -fno-inline -mno-cache-volatile -mno-hw-mulx -mhw-mul -mhw-div -Ic:/altera/91sp2/nios2eds/components/altera_nios2/HAL/inc -DSYSTEM_BUS_WIDTH=32 -DALT_SINGLE_THREADED -D_JTAG_UART_BASE=0x10001000 -Wl,--defsym -Wl,nasys_stack_top=0x800000 -Wl,--defsym -Wl,nasys_program_mem=0x1000 -Wl,--defsym -Wl,nasys_data_mem=0x10000 -Wl,--section-start -Wl,.exceptions=0x20 -Wl,--section-start -Wl,.reset=0x0 -Wl,--script=c:/altera/91sp2/quartus/../University_Program/Monitor_Program/build/nios_cpp_build.ld -o "C:/Documents and Settings/user/Desktop/test1/main.elf" "C:/Documents and Settings/user/Desktop/test1/main.c" "C:/Documents and Settings/user/Desktop/test1/playback.s" c:/altera/91sp2/quartus/../University_Program/Monitor_Program/lib/jtag_uart.c Thanks
