8-bit-CPU
Homebrew 8-bit CPU (by Velko)
The-8-bit-SAP-3
Documentation and source files for a SAP-3 breadboard Computer (by rolf-electronics)
Our great sponsors
| 8-bit-CPU | The-8-bit-SAP-3 | |
|---|---|---|
| 11 | 37 | |
| 10 | 125 | |
| - | - | |
| 9.0 | 0.0 | |
| 5 months ago | almost 3 years ago | |
| Python | ||
| MIT License | - |
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.
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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.
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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.
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Arduino EEPROM programmer for Finch Image (Video Card)
Mark your data using PROGMEM directive (see example).
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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.
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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.
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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.
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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).
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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.
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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.
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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.
The-8-bit-SAP-3
Posts with mentions or reviews of The-8-bit-SAP-3.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-04-06.
- Dreaded 8-bit computer EEPROM problem. Where to buy non atmel chips?
- 16-bit version of Ben's 8-bit CPU
- Is there any advantages to individually-settable flags?
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Whats a good list of all the well documented "Upgraded 8bit Ben Eater Computer. I see things like SAP-1 SAP-3 etc etc some names mentioned.... Rolf computer?
Well thanks, the .pdf I made can be found here: https://github.com/rolf-electronics/The-8-bit-SAP-3.
- Odd behavior when adding to 254 and 1
- Register problems, mor in comments
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RAM upgrade for the 8-bit computer
https://github.com/rolf-electronics/The-8-bit-SAP-3 , see page 17
- What to do with your build post-project
- Better way to display binary
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Added a Stack Pointer to my Ben Eater inspired 8-bit breadboard CPU
I designed and built this: https://github.com/rolf-electronics/The-8-bit-SAP-3
What are some alternatives?
When comparing 8-bit-CPU and The-8-bit-SAP-3 you can also consider the following projects:
logisim-evolution - Digital logic design tool and simulator
8-bit-computer - Documentation of my 8-bit computer build
customasm - 💻 An assembler for custom, user-defined instruction sets! https://hlorenzi.github.io/customasm/web/
nqsap - Not Quite Simple As Possible breadboard computer
iverilog - Icarus Verilog
Digital - A digital logic designer and circuit simulator.
65C02-Tool
pico-test-runner