8-bit-CPU
Homebrew 8-bit CPU (by Velko)
Digital
A digital logic designer and circuit simulator. (by hneemann)
Our great sponsors
8-bit-CPU | Digital | |
---|---|---|
11 | 84 | |
10 | 3,954 | |
- | - | |
9.0 | 6.9 | |
5 months ago | 8 days ago | |
Python | Java | |
MIT License | GNU General Public License v3.0 only |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
8-bit-CPU
Posts with mentions or reviews of 8-bit-CPU.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-02-08.
-
Adding a keypad to Ben's 8-bit computer build
I later built a version that can read/store a full byte (2 key-presses) and present it to a CPU.
-
How bad of an idea is this?
My code is available here, it has evolved since then and I actually abandoned the in-Arduino emulator later (re-wrote that part in Verilog). So it is best viewed at historical tag "emulator_1.0" in the repository.
-
Arduino EEPROM programmer for Finch Image (Video Card)
Mark your data using PROGMEM directive (see example).
-
Breadboard CPU on Arduino Nano?
My project sources are on GitHub. Theres a lot going on, and it is probably a bit over-engineered. You can start by taking a look at Arduino sketch and client library.
-
Ben's 8 Bit Computer in an FPGA
I wrote an emulator for mine, then extended it to test out different designs, before building on hardware. The approach was a bit different, as I started by implementing 74-series logic chips. Then "wired" them together into CPU modules. This way emulator becomes a testable representation of what's possible using logic chips.
-
Building the 8-bit computer in software
I wrote an emulator for my CPU in Verilog. Actually, I made it to test out various aspects before building, real hardware has not yet cached up with it.
-
My 8-bit cpu running at full speed
The source code was in Python. I was able to debug it using Arduino-based adapter and (by using some "magic") translate into machine code binary. Since then I've switched to CustomAsm for code compilation and have other means to debug (emulator and debugger tool).
-
Possible Alternative to EEPROM programmer?
If you looking for examples: here's how you create the array (code generated using xxd -i command), and here's how you use the array.
-
Fully automatic boot loader for the 8-bit CPU?
In the beginning of program (on EEPROM), there's a small piece of code that reads all 256 address locations and writes them back. In BOOT mode, this effectively copies contents from ROM into RAM.
-
If the manual says, never power Teensy from the USB and from Vin at the same time ..................................................................
Complicated? Perhaps, but do not underestimate the power of automated testing! When you can run a couple dozen tests in just few seconds, at any time, it really gives you confidence about the system. Obviously, one should spend time writing the tests, but it pays back rather quickly.
Digital
Posts with mentions or reviews of Digital.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-04-03.
-
Logik: Open-source FPGA toolchain by Zero ASIC
Theres the open source Digital (https://github.com/hneemann/Digital) which can run simulations but then export Verilog. If you have an ICE40 based GPU then in theory you can then use open source tools (like apio) to get that onto your FPGA. I've seen some impressive fpga tasks being generated by that.
I'm early in my learning of FPGA and have done nandgame and some other non-HDL circuit learnings. I have gone back and forth if I want to design my project via HDL or via something like Digital. There's not an easy pro/con either way.
-
How can I implement a simple asynchronous DRAM controller? (2018)
Used the recommended JRT https://adoptium.net/
Wandered through the https://github.com/hneemann/Digital site and saw past issues with JRT but no obvious solution.
I have a couple hundred GALs of same or similar model number of new old stock
- Software for the arrangement of computer components on breadboards
-
Looking for Recommended Circuit Simulation Software
Check if https://github.com/hneemann/Digital and/or Logisim are for you.
-
4 bit multiplier, logic visualized
someone posted a logic gate graph some days ago which sent me through a loop of remaking a 4bit multiplier i designed in Digital Logic, in desmos. unfortunately everything is pretty much explicitly defined and put together as to maintain only the appearance of this exact circuit, so theres no ui for placing components drawing wires and building your own circuits. yet ;]
- Digital – Logic designer and circuit simulator designed for educational purposes
-
What is preferable as self-thought development
This is my favorite book and I read it while trying to create the circuits myself before learning the chapter using digital - it's very enlightening and I recommend you do the same
-
Teaching some electricity to highschoolers, wondering if there's some juicy website out there that lets us easily play around with components and circuits
Digital
-
could someone please help me build a circuit for this truth table 🙏
The Digital application can generate a circuit based on a truth table. An example...
- Can someone tell me why my LED is on even tho it should'nt be