I guess maybe the original version of something like this was cord and cord2, done at MIPS in the mid-80s. http://www.bitsavers.org/pdf/mips/RISCos/3204DOC_RIS

I guess maybe the original version of something like this was cord and cord2, done at MIPS in the mid-80s. http://www.bitsavers.org/pdf/mips/RISCos/3204DOC_RISC_os_Users_Reference_Manual_Volume_I_System_V_Mar1989.pdf http://www.bitsavers.org/pdf/mips/RISCos/3204DOC_RISC_os_Use... I wonder if those have been open sourced.