The Ferranti Pegasus was a computer designed at the end of the 1950's. Using technical documentation and pictures, I'm trying to bring this computer back to life. There are one or two emulators for DOS, programmed in the 1990's, but they're not open source, either easy to run on modern computers. At this moment, I'm finishing the instruction interpreter, and I'm looking for the binary/"assembler" code of "Initial Orders", the ROM that was included in the magnetic drum memory (some kind of very primitive operating system). This "Initial Orders" is not mandatory, since one can load the program memory "manually" instead, and run programs anyway.
Once I've finished this emulator, I'll move forward to my "real" project, which is to program an emulator of the Ferranti Mercury computer, the first computer owned by an Argentinian university (1960).