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- # C VM
-
- This is a C implementation of Collapse OS' native words. It allows Collapse OS
- to run natively on any POSIX environment.
-
- ## Requirements
-
- You need `curses` to build the `forth` executable.
-
- ## Build
-
- Running `make` will yield `forth` and `stage` executables.
-
- ## Usage
-
- To play around Collapse OS, you'll want to run `./forth`. Refer to
- `doc/intro.txt` for help.
-
- The program is a curses interface with a limited, fixed size so that it can
- provide a AT-XY interface. If you wish to change the size of that screen, you
- need to modify COLS and LINES in both `forth.c` and `forth.fs`.
-
- You can get a REPL by launching the program with [`rlwrap(1)`][rlwrap] like
- this:
-
- rlwrap -e '' -m -S '> ' ./forth /dev/stdin
-
- ## Problems?
-
- If the `forth` executable works badly (hangs, spew garbage, etc.),
- it's probably because you've broken your bootstrap binary. It's easy to
- mistakenly break. To verify if you've done that, look at your git status. If
- `stage.bin` is modified, try resetting it and then run `make clean all`. Things
- should go better afterwards.
-
- A modified `blkfs` can also break things (although even with a completely broken
- blkfs, you should still get to prompt), you might want to run `make pack` to
- ensure that the `blkfs` file is in sync with the contents of the `blk/` folder.
-
- If that doesn't work, there's also the nuclear option of `git reset --hard`
- and `git clean -fxd`.
-
- If that still doesn't work, it might be because the current commit you're on
- is broken, but that is rather rare.
-
- [rlwrap]: https://linux.die.net/man/1/rlwrap
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