* Unix: `./build.sh update`
* Windows: `build.cmd`
+* M1 macOS: `arch -x86_64 ./build.sh update`
or download the correct boot image for your system from
http://downloads.factorcode.org/images/master/, put it in the `factor`
Now you should have a complete Factor system ready to run.
+Factor does not yet work on arm64 cpus. There is an arm64 assembler
+in `cpu.arm.assembler` and we are working on a port and also looking for
+contributors.
+
More information on [building factor](https://concatenative.org/wiki/view/Factor/Building%20Factor)
and [system requirements](https://concatenative.org/wiki/view/Factor/Requirements).