80386 Memory Pipeline

The FPGA 386 core I&#x27;ve been building now boots DOS, runs applications like Norton Commander, and plays games like Doom. On DE10-Nano it currently runs at 75 MHz. With the core now far enough along to run real software, this seems like a good point to step back and look at one of the 80386&#x27;s performance-critical subsystems: its memory pipeline. 32-bit Protected Mode was the defining…