设计电路真麻烦。

In the parallel processing course, there is an assignment -- designing a parallel computer using 4 processors and 8 memorys as well as 4 ROM chips. Quite daunting at first, but not so hard as I had expected. Well, it is really a nuisance that requires me to connect almost every pin of the more than 30 chips. OK, it is nearly done.
Note, I use gEDA, a set of open-source EDA softwares, which is very convenient and meet my needs.
The following screenshot is taken when I am designing.