PRELD, PREST, and PREGO

PRELD X,$Y,$Z

PREST $X,$Y,$Z

PREGO X,$Y,$Z

Timing:

1υ

Description:

Informs the machine that the content of the memory region from $Y+$Z to X+$Y+$Z will

• probably soon be used in a load or store instruction (PRELD),
• definitively be written before the next load (PREST), or
• probably soon be used as an instruction (PREGO).