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This work, handled by O'Rear, fell into a series of steps. First, he moved a section of code from the 8-inch disk and compiled it. Then, he converted the code to Intel hexadecimal format. Next, he uploaded it to a DEC-2020 and from there downloaded it to a large Intel fixed-disk development system with an In-Circuit Emulator. The DEC-2020 used for this task was also used in developing the BIOS, so there was additional work in downloading the BIOS to the Intel machine, converting it to hexadecimal format, moving it to an IBM development system, and then crossloading it to the IBM prototype.