bmulvey1 / customsystem

Overview

This is a toy project where I'm developing a compiler, a custom ISA, and an emulator to run it all. I hope to one day get this to a point where the emulator, running a simple operating system, can bootstrap its own compiler.

This project is currently very much in flux. I'm currently getting into some of the more advanced features of the language, such as types, arrays, and structures. Pretty soon this should lead up to more work on the system as a whole, and starting to actually use the language for more than just tests.

customsystem's Issues

hardware/read_length.md deprecated, other changes

probably take mul/div out of alu.vhd
rework divider.vhd
tweak regfile.vhd for 4b addresses

division: only ~50% coverage of space

customSystem/hardware/divider.vhd

Line 18 in 70532c8

process(A, B)

currently has 2.14745088e+09 uncovered, 2.147516416e+09 covered by logic, 2057090 covered by shifts (per matlab script)

vhdl has ~1028545 covered by shifts, others roughly correct

need to figure out the other 2B integers in the space, may be able to use a lut depending on uniques within that space; otherwise can reduce the space partially by combining shifts and subtraction