This was my first i4004 home project. I had worked with the i4004 at work many years ago with the AN/UIC-7 digital intercom system used in the U2R ground systems. FPGA Design Document: FPGA_Design_TTT.pdf Hardware Design Document: HW_Design_TTT_V2.pdf Software Design Document: SW_Design_TTT.pdf FPGA Design: ttt_4004_fpga.pdf Shared folder containing the code: 4004+Tic-Tac-Toe