Pretty sure it's not in the original TRS-80 model 1 Level II ROM. (Also a Microsoft version). I disassembled it to see what unused key words it had, then revect

Pretty sure it's not in the original TRS-80 model 1 Level II ROM. (Also a Microsoft version). I disassembled it to see what unused key words it had, then revectored some of the disk related commands to my own code. (Before I got a floppy disk system for it).