Product roadmap

Development of PatienceOS works best when the needs of the OS align with the interests of Frank.

Next three months

As of 16 April 2024, the rough forward-looking plan is:

• Switch to the Microsoft linker, see if I can get the 'base address' error resolved
• Investigate replacing NASM with the Microsoft equivalent
• Implement a x86 assembly call to write & read from an IO register
• Have the kernel write a given value to the debug register on boot
• Learn how to monitor the debug register value, either in QEMU monitor or GNU debugger (GDB)
• Implement a basic CLI
• Keyboard interrupt handler, routing keystrokes to the CLI
• Implement the CLI command 'out' ie. emit a user-entered value to a register
• Implement the CLI command 'in' ie. read a register value and display the value in the terminal

Way, way off in the future

• Implement/port some useful routines from the C standard library (eg. master, clone)
• Experiment with the performance impact of using different C standard libraries (assuming that's the adopted library)
• Implement PatienceOS standard library for user space (eg. BareMetal exokernel)
• Implement TCPIP stack, see: Let's code a TCP/IP stack, Level-IP, tapip
• Implement and host a TFTP server, see: Tftp.Net C# Library, Booting Arch Linux from PXE