sOS (Save Our System) is a custom built 32bit multitasking operating system. The MSDOS like OS is written in C and a little Assembly. It currently supports process scheduling with time quantum's, system calls, interprocess communication through mailboxes with message queues, and process synchronization through semaphores.

sOS is designed to be compiled through the SPEDE enviroment. In light of this, you will need both SPEDE host to compile the OS and SPEDE target to run it. These both can be ran in VirtualBox. The images for each virtual machine are provided below. Once installed and both are running, please follow the instructions below to build and run sOS.

SPEDE Host
SPEDE Target

1. Run spede-mkmf to create a makefile on the SpedeTarget if one does not exist. Change the variable OS_NAME to sOS
   
   
2. Either use make or make debug to generate the OS image (.dli file)
   • Note: make clean can be used to remove the files generated by the makefile
     
     
3. Run flash sOS.dli followed by download to load the onto SpedeTarget
   
   
4. Run flint followed by g to run the OS on the target machine.
   • If you wish to debug the OS run gdb followed by continue to debug.
     • Note: best used with an OS image created with make debug