9 commits

Author	SHA1	Message	Date
Martin Povišer	ee3a4ce14d	synth_lattice: Merge NOT gates on DFF control signals ... `dfflegalize` will emit NOT gates to drive control signals on flip-flops when mapping to supported flip-flop polarities. Typically in a design this will produce a number of NOT gates driven by the same signal. For one reason or another ABC doesn't fully cancel this redundancy during LUT mapping. Insert an explicit `opt_merge` pass to improve synthesis QoR.	2023-11-07 16:21:39 +01:00
Miodrag Milanovic	72bec94ef4	Add missing file for XO3D	2023-09-01 10:15:51 +02:00
Miodrag Milanovic	792cf8326e	defult nowidelut for xo2/3/3d	2023-08-29 10:08:55 +02:00
Miodrag Milanovic	b168ff99d0	fix generated blackboxes for ecp5	2023-08-28 16:26:26 +02:00
Miodrag Milanovic	0756285710	enable more primitives supported with nextpnr	2023-08-25 11:45:25 +02:00
Miodrag Milanovic	3b9ebfa672	Addressed code review comments	2023-08-25 11:10:20 +02:00
Miodrag Milanovic	541c1ab567	add script for blackbox extraction	2023-08-23 11:51:00 +02:00
Miodrag Milanovic	e3c15f003e	Create synth_lattice	2023-08-23 10:53:21 +02:00
Miodrag Milanovic	a8809989c4	ecp5_gsr -> lattice_gsr, change opt_lut_ins to accept lattice as tech	2023-08-22 10:50:11 +02:00