nxos/README.md

This is a small operating system for x86 PCs that I wrote years ago.

The OS was written in x86 Assembly language and had the following features:

• 16-bit memory model ("real mode", no memory protection)
• PC bootloader
• preemptive multitasking
• FAT filesystem
• keyboard and console drivers
• additional driver for 32-bit "real mode" memory model
• a shell
• some simple applications