Current state of code in the Mu computer: ( (globals . ( (hline1 . (fn () (screen y lo hi color) (if (>= lo hi) () ((fn () (pixel screen lo y color) (hline1 screen y (+ lo 1) hi color)))))) (vline1 . (fn () (screen x lo hi color) (if (>= lo hi) () ((fn () (pixel screen x lo color) (vline1 screen x (+ lo 1) hi color)))))) (hline . (fn () (screen y color) (hline1 screen y 0 (width screen) color))) (vline . (fn () (screen y color) (vline1 screen y 0 (height screen) color))) (andf . (fn () (a b) (if a (if b 1 ()) ()))) (brline . (fn () (screen x0 y0 x1 y1 color) ((fn (dx dy sx sy) ((fn (err) (brline1 screen x0 y0 x1 y1 dx dy sx sy err color)) (+ dx dy))) (abs (- x1 x0)) (- 0 (abs (- y1 y0))) (sgn (- x1 x0)) (sgn (- y1 y0))))) (brline1 . (fn () (screen x y xmax ymax dx dy sx sy err color) (pixel screen x y color) (if (andf (= x xmax) (= y ymax)) () ((fn (e2) (brline1 screen (if (>= e2 dy) (+ x sx) x) (if (<= e2 dx) (+ y sy) y) xmax ymax dx dy sx sy (+ err (+ (if (>= e2 dy) dy 0) (if (<= e2 dx) dx 0))) color)) (* err 2))))) (read_line_2 . (fn () (keyboard stream) ((fn (c) (if (= c 10) stream (if (= c 0) stream (read_line_2 keyboard (write stream c))))) (key keyboard)))) (read_line . (fn () (keyboard) (read_line_2 keyboard (stream)))) (fill_rect . (fn () (screen x1 y1 x2 y2 fill_color) (if (>= y1 y2) () ((fn () (hline1 screen y1 x1 x2 fill_color) (fill_rect screen x1 (+ y1 1) x2 y2 fill_color)))))) (chessboard . (fn () (screen px) (chessboard1 screen px 0 15))) (chessboard1 . (fn () (screen px y color) (if (>= y (height screen)) () ((fn () (chessboard2 screen px y 0 color) (chessboard1 screen px (+ y px) (- 15 color))))))) (chessboard2 . (fn () (screen px y x color) (if (>= x (width screen)) () ((fn () (fill_rect screen x y (+ x px) (+ y px) color) (chessboard2 screen px y (+ x px) (- 15 color))))))) )) (sandbox . (chessboard screen 8)) ) |
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.. | ||
cell.mu | ||
evaluate.mu | ||
gap-buffer.mu | ||
global.mu | ||
grapheme-stack.mu | ||
main.mu | ||
parse.mu | ||
print.mu | ||
read.mu | ||
README.md | ||
sandbox.mu | ||
tokenize.mu | ||
trace.mu | ||
vimrc.vim |
A prototype shell for the Mu computer
Currently runs a tiny subset of Lisp. Steps to run it from the top-level:
- Build it:
$ ./translate shell/*.mu # generates code.img
- 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).