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24 Sep 2023 20:43:40 UTC
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0035: Control Logic & Breadboard | 16-Bit Computer From Scratch
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.
EDIT: After posting this video, I realize that there are several issues with the breadboard. Not only are there lines missing for the address lookup, but I also wanted to latch the output and control the boards from that latched data. Obviously, there will need to be a clean-up video. I briefly considered taking this video down, but I do not like hiding from my mistakes. I will address them head-on in an upcoming video.
Thank you again!
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
#schematic
#CircuitVerse
...
https://www.youtube.com/watch?v=VJB3dIfV6VQ
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.
EDIT: After posting this video, I realize that there are several issues with the breadboard. Not only are there lines missing for the address lookup, but I also wanted to latch the output and control the boards from that latched data. Obviously, there will need to be a clean-up video. I briefly considered taking this video down, but I do not like hiding from my mistakes. I will address them head-on in an upcoming video.
Thank you again!
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
#schematic
#CircuitVerse
...
https://www.youtube.com/watch?v=VJB3dIfV6VQ
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video/mp4
Language
English
More from the publisher
Controlling
VIDEO
0089:
episode-0089
*Description*
It's time to design a circuit to read the Serial EEPROM and place its contents into SRAM. I thought it would be easy. Boy was I wrong!
*Chapters*
0:00 Intro
1:40 Part 1: Adding Settings to the Emulator
4:51 Part 2: Emulating the 25LC256 EEPROM
11:37 Part 3: Emulating the AS6C62256 RAM
15:22 Part 4: Planning the Control ROM Load
18:50 Part 5: Orchestrating the Control ROM Load
34:12 Part 6: Wrap-Up
*Resources:*
Kind Donations (see https://github.com/eryjus/16bcfs/blob/master/LICENSE.md for details):
* Buy me a Beer: https://ko-fi.com/eryjus
YouTube Links:
* 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
CircuitVerse Models:
* CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch
GitHub Repo:
* *16bcfs Complete Repository:* https://github.com/eryjus/16bcfs
*Additional Tags:*
#Qt6 #Homebrew #Breadboard #PCB #KiCad #74LS #IC #SMD #schematic #CircuitVerse #ALU #555 #Computer #Emulator #SPI #Arduino #EEPROM
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0094:
episode-0094
*Description*
Let's get this working! Or, close anyway.
This video builds and integrates a single ROM module with the Control ROM Control Module. While I cannot call it perfect yet, we get quite close.
*Chapters*
1:29 Part 1: LED Still On Investigation
3:42 Part 2: Breadboard "Bodge" Cleanup
4:12 Part 3: Instruction Register Inputs
5:17 Part 4: Refitting the Control LEDs
7:49 Part 5: Ctrl ROM Ctrl Schematic and Emulator Update
8:40 Part 6: Control ROM Schematic
11:30 Part 7: Control ROM Breadboard
15:32 Part 8: Connecting the Breadboard Modules
17:07 Part 9: First Test
19:44 Part 10: Getting Methodical
21:47 Part 11: The Real Issue and Its Resolution
26:33 Part 12: Schematic and Emulator Cleanup
28:15 Part 13: EEPROM Emulation Correction
30:38 Part 14: Final Test
30:50 Part 15: Wrap-Up
*Resources:*
Kind Donations (see https://github.com/eryjus/16bcfs/blob/master/LICENSE.md for details):
* Buy me a Beer: https://ko-fi.com/eryjus
YouTube Links:
* 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
CircuitVerse Models:
* CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch
GitHub Repo:
* *16bcfs Complete Repository:* https://github.com/eryjus/16bcfs
*Additional Tags:*
#Qt6 #Homebrew #Breadboard #PCB #KiCad #74LS #IC #SMD #schematic #CircuitVerse #ALU #555 #Computer #Emulator #SPI #Arduino #EEPROM
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
VIDEO
0008:
Episode-0008
My name is Adam. I'm building a 16-bit computer from scratch. I hope you will join me on this journey.
16-Bit Computer From Scratch Complete Playlist: https://www.youtube.com/watch?v=XH92d93l5ww&list=PLUF7WfBe0k3g9wpTtg41QP3jl5y8T1aGV
16-Bit Computer From Scratch Register Module Playlist: https://www.youtube.com/watch?v=PiZ3pYomPFE&list=PLUF7WfBe0k3h1K0GHuQcwE9RUwpX6pBFm
In this video I begin the process of building out a register. This video focuses on the Input, Storage, and Output (to LED) of data. In this video, I also construct a bus testing harness for testing input data for the bus by hand.
This register does not yet conform to the design rules I have set out for myself, so expect additional work to follow on the Register Module.
I also create a custom ribbon cable. James Sharman also demonstrated how to make these cables. Check out his video and consider following him as well: https://www.youtube.com/watch?v=7Lb1Dawq4cQ
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0028:
Episode-0028
My name is Adam. I'm building a 16-bit computer from scratch. I hope you will join me on this journey.
16-Bit Computer From Scratch Complete Playlist: https://www.youtube.com/watch?v=XH92d93l5ww&list=PLUF7WfBe0k3g9wpTtg41QP3jl5y8T1aGV
Chapters:
0:00 Intro
0:25 Register PCB Fixes
2:17 Desoldering Attempt #1 (Fail)
4:40 New Equipment/Supplies
5:31 Taping off Components to Protect
6:30 Hot Air Attempt #1
9:05 Undesirable Results
10:48 Hot Air Attempt #2
16:55 Walk away and Regroup...
20:52 Hot Air Attempt #3
23:08 The BIG Realization!
24:13 Cleaning up the Old Solder
25:36 Doing More Unnecessary Damage!
26:28 Removing the Additinoal Damage
28:45 Reinstalling Pin Headers/Pin Sockets
30:31 Final Inspection
31:55 TODOs
In this video I work on cleaning up the errors on the Register PCB. It does not go as planned.
In the end, I realize I need some additional equipment and put off the last of the work until I get that (which is already on order).
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
#schematic
#soldering
#desoldering
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0084:
0084-register-module-schematic-creation
*Description*
This video largely focuses on creating a schematic for the Register Module. Taking the hookups directly from the code and pedantically checking that with the code a second time went quite fast.
With a little spare time, I clean up a BREAK signal bug in the Clock Module and present some of the plans for instructions. This document is available on GitHub: https://github.com/eryjus/16bcfs
*Chapters*
0:00 Intro
1:12 Part 1: Testing Fine Motor Skills After a Bad Fall
2:24 Part 2: Confirm Counter Behavior
7:23 Part 3: The Plan for the Register Module
10:38 Emulating the Register Module (with a Design Flaw)
12:05 Part 5: The Fixed Register Module
12:52 Part 6: Not Quite Right Yet
14:30 Part 7: Updating the Clock Module
18:49 Part 8: Explaining the Incorrect Behavior
20:55 Part 9: Presenting the Updated Clock Module
21:56 Part 10: Wrap-Up
*Resources:*
Kind Donations (see https://github.com/eryjus/16bcfs/blob/master/LICENSE.md for details):
* Buy me a Beer: https://ko-fi.com/eryjus
YouTube Links:
* 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
CircuitVerse Models:
* CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch
GitHub Repo:
* *16bcfs Complete Repository:* https://github.com/eryjus/16bcfs
*Additional Tags:*
#Qt6 #Homebrew #Breadboard #PCB #KiCad #74LS #IC #SMD #schematic #CircuitVerse #ALU #555 #Computer #Emulator
...
https://www.youtube.com/watch?v=GCWJ4ngjhwM
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0034:
0034-instruction-register-breadboard-16
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
0:22 Tour of the Processor
1:17 The Instruction Register
2:11 IC Placement
4:52 Power, Ground, and Control Signals
6:08 First Bit Wire-Up
7:59 Complete Wire-Up
12:49 How to Control Timing?
15:12 Current Timing Problems?
16:55 Captioning
17:20 TODOs
In this video I breadboard out the Instruction Register and perform some surface testing.
I also discuss some methods for aligning the control signals, as the timing of these signals is dependent on the number of gates that the signal needs to go through. We need to understand how to effectively close any gaps that are needed.
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
#schematic
#CircuitVerse
...
https://www.youtube.com/watch?v=qOU3AhP2DBo
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0064:
episode-0064
*Description*
Important references:
James Sharman Clock: https://youtu.be/KEwL2P8IGaA
Julian Ilett CLock: https://youtu.be/WcnHZGyzRJI and https://youtu.be/EnvVSQi5iVU
The clock and reset circuits have some rather significant issues. This video addresses the clock parts.
In all honesty, I had a thought in my head that this circuit was going to look like at the end. It does not end up that way and I end up going in a different direction.
However, I do end up with a rather robust clock circuit which, with a little future enhancement, will likely be my final clock.
*Chapters*
0:00 Intro
2:17 New Clock
5:46 Testing the New Clock
7:15 New Clock Attempt #2
8:41 Testing Attempt #2
11:46 New Clock Attempt #3
14:11 Testing Attempt #3
15:24 A True 50% Duty Cycle
19:08 Clock Clean-Up
19:38 Half-Step Switch Attempt
20:34 Second Clock
21:58 Adding Some State
23:24 Second Clock Divider and Cleanup
25:55 Single Step De-Bounce
30:02 Clock Selector
32:25 Cleanup
33:00 Wrap-Up
*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/v0.0.10
* 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
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0005:
0005-single-step-clock-16-bit-computer
My name is Adam. I'm building a 16-bit computer from scratch. I hope you will join me on this journey.
16-Bit Computer From Scratch Complete Playlist: https://www.youtube.com/watch?v=XH92d93l5ww&list=PLUF7WfBe0k3g9wpTtg41QP3jl5y8T1aGV
In this video, I complete a Monostable Clock Circuit for single stepping the CPU.
I mention Ben Eater's series on the 555 Timer circuits. His videos are available here, and I highly recommend watching them:
1) Astable operation: https://www.youtube.com/watch?v=kRlSFm519Bo
2) Monostable operation: https://www.youtube.com/watch?v=81BgFhm2vz8
3) Bistable operation: https://www.youtube.com/watch?v=WCwJNnx36Rk
I also refer to James Sharman's stateful clock as a model for the final Clock Module. Please consider subscribing to his channel: https://www.youtube.com/watch?v=dbtTeT7DUCs&list=PLFhc0MFC8MiCDOh3cGFji3qQfXziB9yOw&index=75
Finally, I joke that my projects are on a "Century-to-complete" timeline. That is actually has a little deeper meaning than me simply not finishing a project I start. I explain this a little more in one of my other projects: https://github.com/eryjus/CenturyOS/blob/master/README.md
Additional Tags:
#Homebrew
#Breadboard
#PCB
#KiCad
#74LS
#IC
#SMD
...
https://www.youtube.com/watch?v=mCqMNrlUIsY
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
0087:
0087-spi-eeprom-programmer-ready-16-bit
*Description*
In this video I complete the SPI EEPROM Programmer I started in Video 85. This includes these features:
* Write an EEPROM from a binary prepared on the host computer
* Read an EEPROM and write it to a file on the host computer
* Send a binary to an EEPROM and compare it contents to that on the EEPROM, reporting the page-level differences.
The client application is completed as well.
*Chapters*
0:00 Intro
1:09 Part 1: Handshaking
5:37 Part 2: Programming an EEPROM
10:01 Part 3: Reading an EEPROM
13:17 Part 4: Verifying the Contents of an EEPROM
16:07 Part 5: Soldering the Programmer
18:33 Part 6: Wrap-Up
*Resources:*
Kind Donations (see https://github.com/eryjus/16bcfs/blob/master/LICENSE.md for details):
* Buy me a Beer: https://ko-fi.com/eryjus
YouTube Links:
* 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
CircuitVerse Models:
* CircuitVerse Project Link: https://circuitverse.org/users/160845/projects/16-bit-computer-from-scratch
GitHub Repo:
* *16bcfs Complete Repository:* https://github.com/eryjus/16bcfs
*Additional Tags:*
#Qt6 #Homebrew #Breadboard #PCB #KiCad #74LS #IC #SMD #schematic #CircuitVerse #ALU #555 #Computer #Emulator #SPI #Arduino
...
https://www.youtube.com/watch?v=gp5PWdW_t3E
Transaction
Created
3 weeks ago
Content Type
Language
video/mp4
English