Better nand2tetris. Please Shimon. Please Yaron.

In script ... illegal terminator '}' -- when your code doesn't even contain that character on that line. This happens when you run the HDLsimulator from the command line and give it an HDL file rather than a test script.

Why not provide an intelligent error message - ATLO perl saying ". Missing semicolon on previous line?" You get the idea..

Also, support for underscores would be nice. Duh :)