alt Hacker NewsThe ROM used different sized transistors to store two bits per transistor. That's pure analog territory, which most HDLs don't touch.
The ROM used different sized transistors to store two bits per transistor. That's pure analog territory, which most HDLs don't touch.
And largely irrelevant if the goal is synthesizing something that can be put onto an FPGA to be a workalike for the 8087. It's almost never about synthesizing the exact original hardware to be fabricated. See CPU86 and Zet, for examples:
* https://github.com/nsauzede/cpu86/wiki
* https://github.com/marmolejo/zet