8输入来控制八种不同占空比的pwm波产生，分别为12.5 ，25 -8 inputs to control the eight different duty cycle of the PWM wave generating, were 12.5 , 25 ....

fpga相关程序，包括产生pwm波，同单片机通信，以及相关原理图，绝对全面。-fpga related procedures, including generating pwm wave, with single-chip communications, and related schematics, absolutely comprehensive.