1.9 KiB
A CPU that aims to be binary compatible with the 8086 ISA, focused on optimisation and flexibility.
Progress
- 8086
- Executing code
- Is Turing complete
- Can boot up MS-DOS / FreeDOS
- Is completely binary compatible
- Is pipelined
- Is Out of Order
- Is superscalar
- Has been successfully synthesized
Simulating it
Both Verilator and Icarus Verilog can be used for simulation. You can select which one you want with the SIM variable on common.mk Specifically this list shows the software needed and the versions used during development (other versions should work as well)
- Icarus Verilog : version 12.0 OR (preferred) Verilator : 5.016
- bin86 : 0.16.21
- GNU Make : 4.4.1
- xxd : 2022-01-14
- POSIX coreutils : GNU coreutils 9.4
After that you can run make on the top level directory and it should build everything and start the simulation
High level design overview
License
All parts of this project and files in this repository are licensed under the GNU General Public License version 3 or later
Efthymios Kritikos is the copyright owner for all files except the following:
| File | Copyright owner | Original license |
|---|---|---|
| system/fpga_config/OrangeCrab_r0.2.1/pin_constraint.pcf | Greg Davill | MIT |
Version names
The version name consist of three numbers:
- The CPU that this version aims to be compatible with
- The specific milestone
- Patch level
For example v1.3.2 aims to support 80186 code, is on the fourth milestone and has 2 bug fixes since the milestone was reached.