user/shatov/modexpng - "Next-generation" modular exponentiation using the specialized DSP slices present in the Artix-7 FPGA

Age	Commit message (Collapse)	Author
2019-10-23	Added missing copyright headers.	Pavel V. Shatov (Meister)

2019-10-23	Added simulation-only code to measure multiplier load.	Pavel V. Shatov (Meister)

2019-10-21	Further work:	Pavel V. Shatov (Meister)
	- added core wrapper - fixed module resets across entire core (all the resets are now consistently active-low) - continued refactoring
2019-10-21	Added "MERGE_LH" micro-operation. To be able to do Garner's formula we need	Pavel V. Shatov (Meister)
	regular (not modular) multiplication. We're doing this by telling the modular multiplier to stop after the "square" step, which computes A*B. The problem is that the multiplier stores the lower part of the product in the internal bank L and the upper part in the internal bank H, but we need to be able to do operations on the product as a whole. MERGE_LH that combines the two halves of the product into one bank.
2019-10-03	Added more micro-operations, entire Montgomery exponentiation ladder works now.	Pavel V. Shatov (Meister)

2019-10-03	Added more micro-operations, also added "general worker" module. The worker ↵	Pavel V. Shatov (Meister)
	is basically a block memory data mover, but it can also do some supporting operations required for the Garner's formula part of the exponentiation.
2019-10-03	Expanded micro-operation parameters (added dedicated control bit to force ↵	Pavel V. Shatov (Meister)
	the B input of the modular multiplier to 1, this is necessary to bring numbers out of Montgomery domain).
2019-10-03	Redesigned storage modules, added top-level module, added I/O storage space.	Pavel V. Shatov (Meister)

2019-10-01	Redesigned core architecture, unified bank structure. All storage blocks now	Pavel V. Shatov (Meister)
	have eight 4kbit entries and occupy one 36K BRAM tile.