0035: Control Logic & Breadboard | 16-Bit Computer From Scratch

This video was originally released on 25-Jan-2023 on YT: https://youtu.be/VJB3dIfV6VQ

CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch

16-Bit Computer From Scratch Complete Playlist: https://www.youtube.com/watch?v=XH92d93l5ww&list=PLUF7WfBe0k3g9wpTtg41QP3jl5y8T1aGV

16-Bit Computer From Scratch Intruction Cycle Complete Playlist: https://www.youtube.com/playlist?list=PLUF7WfBe0k3hAeAdKv5JcBrV_JbujD6l_

16-Bit Computer From Scratch Register Module Playlist: https://www.youtube.com/watch?v=PiZ3pYomPFE&list=PLUF7WfBe0k3h1K0GHuQcwE9RUwpX6pBFm

Chapters:
0:00 Intro
0:35 Clock Signals
1:24 Control Signal (Control Bits)
3:02 Fetch & Instruction Register Latches
3:59 Control Word Latch
4:28 "And Latch" Control
5:35 Bus Assert Control
6:19 Load/Inc/Dec Control
7:31 Control Timing Adjustments
10:33 Breadboarding the Control Signals
25:34 Next Steps

In this video I discuss how I need to shape the control signals for the computer. I breadboard out the Control Logic needed for the NOP instruction. This gives me the control signals I need to free-run the CPU.

I did not quite complete the breadboard. I forgot to hook up the relevant parts of the instruction to the EEPROM address. The video was already long enough as it is. I will clean those up when I test the signal and timing.

Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
#schematic
#CircuitVerse