instruction-pipeline.md

SPDX-License-Identifier: GPL-2.0-only
(c) William Fonkou Tambe

Instruction Pipeline (Single Issue)

IF  : Instruction Fetch
ID  : Instruction Decode
EX  : Execute
MEM : Memory Access
WB  : Register Write Back

IF | ID   EX    WB | : Pipeline with single-cycle instructions; ID EX WB are same stage.
IF | ID | EX  | WB | : Pipeline with multi-cycle instructions.
IF | ID | MEM | WB | : Pipeline with memory-access instructions.

Notes

The icache and itlb are used at the IF stage.
The dcache and dtlb are used at the MEM stage.