1 .../bin/ld.exe: address 0x1043ad0 of dp_demo.elf section `.bss' is not within region `onchip_mem'
.../bin/ld.exe: address 0x1041084 of dp_demo.elf section `.rwdata' is not within region `onchip_mem'
参考 ： https://www.cnblogs.com/yongleili717/p/11253006.html
bsp - properties - Nios 2 Bsp Properties 中下面三项 注意，影响实际 RAM 的使用量
2 ...main.c:116: undefined reference to `alt_timestamp_start'
...main.c:117: undefined reference to `alt_timestamp_freq'
...main.c:118: undefined reference to `alt_timestamp'
参考： https://www.cnblogs.com/mark-sun/archive/2012/05/13/2498029.html
bsp -- 右键 NIOS 2 -- BSP editor ... 中注意给 timestamp_timer 指定实际物理设备