Do you mean a "console" as in you are trying to build hardware or a "console" as in a little text output window?
While hardware isn't my area, my son has been learning electronics from this youtube series that says they will conclude by creating an 8-bit computer. Maybe that will help?
https://www.youtube.com/playlist?list=PLah6faXAgguOeMUIxS22ZU4w5nDvCl5gs