Delete comment from: Ken Shirriff's blog
Toivo Henningsson said...
Do you know which instructions use the microcode ROM in the Pentium? The Pentium can execute two instructions in parallel under some circumstances, one in the U-pipe, and one in the more restricted V-pipe. I assume that none of the instructions supported by the V-pipe are microcoded, since there is only one microcode ROM and I guess it can't be read twice per cycle.
Apr 8, 2025, 7:17:23 AM