nextpnr

Author	SHA1	Message	Date
YRabbit	dd4d3056eb	Gowin. DSP. Refactor port renaming. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>	2026-03-04 09:04:55 +01:00
YRabbit	008ccae25b	Gowin. DSP. Implement MULT27X36. The new multiplier is made from two 27x18 units by switching inputs and creating a cluster connected via CASO->CASI. A second pass was required to process the multipliers created on the fly—the processing of DSP cells was separated into a separate function, which resulted in a large diff, but in reality there were very few changes. An important point is that in the 5A series, there is a gap between adjacent DSPs in one row. There are still SIA/CASI wires, so the DSPs on either side of the gap are connected, but the distance between them is greater than usual. We take this fact into account based on the gap coordinates from the chip database. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>	2026-03-04 09:04:55 +01:00
YRabbit	6235ba21e3	Gowin.DSP. Add MULTALU27X18. (#1650 ) This primitive occupies one DSP block entirely and can be connected into complex chains both by arguments (shifting operands from SOA to SIA) and by results (CASO->CASI cascades). Signed-off-by: YRabbit <rabbit@yrabbit.cyou>	2026-02-26 12:25:10 +01:00
YRabbit	d43c09d070	Gowin. Divide packer. (#1645 ) Split the packer into several files. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>	2026-02-21 08:11:39 +01:00