andrew/piquant

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Andrew Kesterson 683b47f245 WIP : Eff it, I left the magic memcpy in. Printing mostly works but it's still broken. Calls to _cputs and _cputsf may mysteriously fail due to some kind of memory corruption I haven't tracked down yet. This commit leaves in a bunch of commented testing code, the next commit will rip them out.

2024-05-12 21:28:27 -04:00

- All tests passing

2024-05-04 11:31:14 -04:00

Make builds fail when the tests fail

2016-03-27 12:23:49 -07:00

WIP : Eff it, I left the magic memcpy in. Printing mostly works but it's still broken. Calls to _cputs and _cputsf may mysteriously fail due to some kind of memory corruption I haven't tracked down yet. This commit leaves in a bunch of commented testing code, the next commit will rip them out.

2024-05-12 21:28:27 -04:00

WIP : Eff it, I left the magic memcpy in. Printing mostly works but it's still broken. Calls to _cputs and _cputsf may mysteriously fail due to some kind of memory corruption I haven't tracked down yet. This commit leaves in a bunch of commented testing code, the next commit will rip them out.

2024-05-12 21:28:27 -04:00

WIP. Storing code in line numbers and listing is working. Added a RUN command, and refactored the line runner logic out of basic_repl into basic_run_line. The repl still works but the RUN function is busted. The parser logic is increasingly getting in the way, and the solver is not as useful as I originally thought. The original design of the datastructures and logic is getting in my way and adding confusion. I may need to try something simpler.

2024-05-07 08:08:40 -04:00

.gitignore

Refactored the C files out into libraries, started work on the BASIC repl (it can sorta do math!)

2015-01-25 22:05:28 -08:00

.travis.yml

Add .travis.yml for travis CI support

2016-03-27 12:15:58 -07:00

bochsrc

- All tests passing

2024-05-04 11:31:14 -04:00

Makefile

WIP : About to rip out the old parser and solver, can't get things working the way I expect and the old code is in the way

2024-05-07 18:06:01 -04:00

README.md

- Added string strip methods lstrip and rstrip

2024-05-04 22:08:20 -04:00

README.md

Piquant

Piquant is a little toy operating system I'm building.

Why?

Because it's fun. Don't you like to have fun? Ogre.

What does it do?

Right now, not much of anything at all. It boots from a 1.44mB floppy disk, and enters into a BASIC interpreter, just like your favorite home computers of the 70s/80s!

Currently the BASIC only understands simple arithmetic expressions. But this will soon change; I intend to implement at least as many features as uBASIC, maybe QuickBASIC eventually.

How can I run it?

You have to build it to run it. To build it, you need:

bcc (bruce's c compiler - check your OS's package repositories)
nasm
gnu make
ld86, objdump86, as86

To run it, you need either an x86 computer with a floppy drive (or the bochs emulator. For emulation you can use any x86 emulator that can boot a floppy image, but the makefile assumes you have 'bochs' installed.

make clean run

This will rebuild all of the sources and fire up the bochs emulator. Have fun.

Developing & Testing

You need gcc to run the unit tests. To run the unit tests:

make test

Keep in mind that the unit tests are compiled with gcc, not bcc, as I couldn't find an elegant way to make bcc produce objects that could easily be run in linux (especially Travis-CI). So while the tests are an accurate test of the C code under ANSI spec, they make no promises re: what bcc is eventually going to do with that code.

New unit tests are created by making a new *.c file in tests/. Drop the name of whatever portions of piquant it relies on into a '.deps' file. Look at the others for examples.