英语翻译These systems loaded the program directly in memory and

英语翻译These systems loaded the program directly in memory and began executing atword 0,which was the magic number.To avoid trying to execute the headeras code,the magic number was a BRANCH instruction with a target addressjust above the header.In this way it was possible to read the binary file directlyinto the new process’ address space and run it at 0,without even knowinghow big the header was.