mu/shell
Kartik K. Agaram 60cab88ace evaluating fns is too similar to its input
When I edit disk images directly, it's easy to forget a pair of parens.
Then the first expression of the body never executes.
2021-04-17 20:58:36 -07:00
..
README.md . 2021-04-16 20:26:56 -07:00
cell.mu shell: streams that you can append graphemes to 2021-04-10 23:05:16 -07:00
evaluate.mu evaluating fns is too similar to its input 2021-04-17 20:58:36 -07:00
gap-buffer.mu add some structure to the serialization format 2021-04-15 19:56:16 -07:00
global.mu loosening a few more buffers 2021-04-17 08:29:43 -07:00
grapheme-stack.mu shell: highlight matching paren for cursor 2021-04-09 21:57:40 -07:00
main.mu load sandbox even if there are no globals 2021-04-17 19:35:02 -07:00
parse.mu parse dotted lists 2021-04-15 19:47:01 -07:00
print.mu . 2021-04-17 08:23:55 -07:00
read.mu loosening a few more buffers 2021-04-17 08:29:43 -07:00
sandbox.mu tmp: debugging why brline prints no pixels 2021-04-17 08:34:48 -07:00
tokenize.mu shell: dot token 2021-04-15 08:48:53 -07:00
trace.mu shell: start jumping to keyboard using Tab 2021-04-10 22:14:20 -07:00
vimrc.vim 7842 - new directory organization 2021-03-03 22:21:03 -08:00

README.md

A prototype shell for the Mu computer

Currently runs a tiny subset of Lisp. Steps to run it from the top-level:

  1. Build it:
$ ./translate shell/*.mu      # generates code.img
  1. Run it:
$ qemu-system-i386 code.img

or:

$ bochs -f bochsrc

To save typing in a large s-expression, create a secondary disk for data:

$ dd if=/dev/zero of=data.img count=20160

Load an s-expression into it:

$ echo '(+ 1 1)' |dd of=data.img conv=notrunc

Now run with both code and data disks:

$ qemu-system-i386 -hda code.img -hdb data.img

or:

$ bochs -f bochsrc.2disks

You can type in expressions, hit ctrl-s to see their results, and hit Tab to focus on the ... below and browse how the results were computed. Here's a demo. The bottom of the screen shows context-dependent keyboard shortcuts (there's no mouse in the Mu computer at the moment).

Known issues

  • There's no way to save to disk.

  • Don't press keys too quickly (such as by holding down a key). The Mu computer will crash (and often Qemu will segfault).