Update
Up until today, the kernel has been split half and half between Little and Big Endian.  When I first started KnightOS, I was a bit confused as to the meanings of both, and ended up using Big Endian for everything.  But about halfway through, I became less ignorant, and started using Little Endian, because it is the standard.  However, I never took the time to go back and fix the old stuff that used Big Endian.  Today, I fixed it, and with that...
The kernel is done!
I feel that the kernel has been fleshed out completely.  The image I had in my mind 7 months ago for the kernel is now sitting in front of me.
That means that all that remains to be done before the developer release is the filesystem, and several small OS programs so that it is usable on-calc.

Update
Hi there!  Sorry it's been so long since I've posted an update, but I've spent more time grounded than not in the past few months.  Now to the important stuff:
I've gotten basic KFS support working.  In past builds of KnightKernel, a simple read-only filesystem has been used as a temporary fix.  My current aims with KnightKernel is to get the real KnightOS Filesystem working on it, and in order to do this, I completely scrapped all existing filesystem related code and started fresh.  This means that I disabled multithreading and a lot of other features (including actually booting without crashing) that relied on reading from the filesystem.  Today, I re-enabled those features as basic support for reading from a KFS compliant filesystem has been added.
In addition to adding this support, RAM has been set aside for a file stream table, and I've also written several custom build tools for the kernel, as well as laid out the final structure of KnightOS itself.  I've written a tool that will take a ROM file and copy a directory on your hard drive to root on the ROM file, and one that will take the internal include file and generate an external include file based on it.  Next on my to-do list is to flesh out file reading a bit more, and add write support.  After that, I believe the kernel will be complete, and work on the OS itself may begin.

The thread list program has been added and integrated into libgui so that users can switch between active threads.  Several other bug fixes have been added to improve overall stability of the system.  Here's a screenshot of the latest version, including task management:


The latest version is available for download here:
TI-73
TI-83+
TI-83+ SE
TI-84+
TI-84+ SE

Note that these may be unstable and cause crashes.  In the event that your calculator becomes irrevocably crashed, you can fix it by removing a single battery, holding down the DEL key, and replacing the battery.  This will enable you to send a new OS, such as the official TI OS.  Be aware that installing any of these OSes has a high risk of deleting items in your archive, should you choose to re-install TI OS.  It is highly unlikely that your calculator will be damaged to the point that it cannot be recovered, verging on the point of impossible.  Regardless, I am not responsible for damage incurred.

Yeah, but the guy is banned so he can't really fix them.

Just curious, how did he get banned?