"RISC-like" is a good term. The way the 6502 used Page 0 RAM effectively gave it 256 extra "registers". Not as fast as the real on-CPU registers, of course, but

"RISC-like" is a good term. The way the 6502 used Page 0 RAM effectively gave it 256 extra "registers". Not as fast as the real on-CPU registers, of course, but definitely faster than accessing a random byte of memory. Accessing arbitrary memory required a two byte address, but some instructions had a "page 0" form that let you access those addresses with only a one byte address, with page 0 assumed.