That's news to me, but looking it up indeed NS always calls the SC/MP I officially ISP-8A/500D and the SC/MP II is called INS8060. Amazing, I saw INS8050 mentioned as name of the SC/MP I in many places, but I can't find that name being used by NS. Confusing!
Ages ago I got a MCS-48 data sheet when asking for a SC/MP datasheet. Finally I know why that happened.
Michael