Introduction - If you have any usage issues, please Google them yourself
1.sign_multi folder is the multiplication of the number of symbols, 4bit* 4bit data operation. 2.unsign_multi folder 4bit* 4bit computing the unsigned. More than two files by Quartusii comprehensive another in each folder including sign_multi_modelsim and unsign_multi_modelsim file folder, which contains all the files with the ModelSim simulation, debugging through simulation.