Introduction - If you have any usage issues, please Google them yourself
SPARTAN 3E in the development platform, the use of its board of some I/O port or LED to achieve the design of PWM upload is pwm_ctrl PicoBlaze realize the PWM control file, another is in the top-level ISE design files.
Packet : 7941938pwm.rar filelist
picoblaze_pwm_control.vhd
pwm_ctrl.vhd