0066: EEPROM Replacement Part 2 (Fail!) | 16-Bit Computer From Scratch

*Description* In this video I attempt to get the EEPROM replacement working properly without bleeding power to the rest of the circuit. Well, you see the thumbnail, so you know it does not work. This video is about the troubleshooting process. *Chapters* 0:00 Intro 0:20 Design Reminder 1:12 Diodes 3:30 NPN Transistor 5:38 NPN Transistor Do-Over 7:12 Change of Plans! 8:17 Removing the Diodes 8:47 Adding the Transistor 10:42 Adding the Resistor 11:07 Connecting the Emitter 11:44 Fixing a Solder Bridge 12:59 Testing the Results 14:49 The Original Plan "B" 19:34 Cutting the Strip Board 20:23 Assembling the New Strip Board 23:15 Toning Out My Solder Joints 24:24 Breadboard Testing 25:10 Epic Troubleshooting 29:13 Confirmation Bias Sets In 30:57 Wrong Path Again 32:18 Breaking Down the Problem Board 33:03 The Next Day 34:18 The Root of the Write Enable Problem 37:41 A New Problem Not Realized Yet 41:08 I Got It Working 41:53 Wrap-Up 42:10 Fail! *Resources:* * 16-Bit Computer From Scratch Complete Playlist: https://www.youtube.com/watch?list=PLUF7WfBe0k3g9wpTtg41QP3jl5y8T1aGV * ALU Playlist: https://youtube.com/playlist?list=PLUF7WfBe0k3hUjV-G_ApJ1jRvpVhnAkqG * Clock Module Playlist: https://youtube.com/playlist?list=PLUF7WfBe0k3grwqFJM1aVwYW6K9bRCkGN * Register Module Playlist: https://youtube.com/playlist?list=PLUF7WfBe0k3h1K0GHuQcwE9RUwpX6pBFm * Intruction Cycle Playlist: https://www.youtube.com/playlist?list=PLUF7WfBe0k3hAeAdKv5JcBrV_JbujD6l_ * Memory Module Playlist: https://youtube.com/playlist?list=PLUF7WfBe0k3ixg4C006_Uq6aZ8vYzlPSM * KiCad Playlist: https://youtube.com/playlist?list=PLUF7WfBe0k3jGLDCGYyv_KxkEMcUfhyN0 * Assembler Source Code: https://github.com/eryjus/asm/tree/v0.0.7 * Control Logic Source Code: https://github.com/eryjus/control-logic/tree/v0.0.11 * Simple Test Source Code: https://github.com/eryjus/16BCFS-tests/tree/Video-0063 * CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch * 16bcfs Emulator: https://github.com/eryjus/16bcfs-emulator *Additional Tags:* #Homebrew #Breadboard #PCB #KiCad #74LS #IC #SMD #schematic #CircuitVerse #ALU #555