The hardware is rock solid. I've got the xv6 filesystem in ROM and working well. I've got some of the FUZIX libc running including the mem/string functions, the stdio functions, and malloc/brk/sbrk. The rest of the libc is untested.

There are some basic programs, e.g. the ones that come with xv6. There is also a simple vi-like editor, a simple less-like pager, and a document processor called roff. So, with the current system, you can edit documents, process them and see the output.

There is a simple shell that knows about * and ? expansion, file redirection such as >, <, >> and 2>.