| commit | 75d46a20aa31bf5788680d9bdf638b767ac06b8e | [log] [tgz] |
|---|---|---|
| author | Andrew Foote <afoote97@gmail.com> | Mon Mar 21 09:32:12 2022 -0700 |
| committer | Andrew Foote <afoote97@gmail.com> | Mon Mar 21 10:22:07 2022 -0700 |
| tree | c429d5dc4d85a95c9d15af132e6e9388c1ee1df7 | |
| parent | 4b9b4bd1ac2d395556283d0d9bdb5c213bb79409 [diff] |
update 4ft4 submodule & 4ft4_top connect rom in & ram out to gpio. add LA probes for halt and reset.
4ft4 is a clone of the MCS-4 architecture (4004 CPU, 4001 ROM, 4002 RAM), with a wishbone backdoor interface to the “ROM” and the RAM that enables loading a program for execution and inspecting/modifying the RAM.
This is an integration of 4ft4 into the caravel harness, with the 4ft4 wishbone backdoor interface connected to the caravel management processor.
caravel_user_project and modifications: Apache 2.0. The original caravel_user_project that this is based on is https://github.com/efabless/caravel_user_project.
4ft4: MIT.