19 commits

Author	SHA1	Message	Date
Marcelina Kościelnicka	15b0d717ed	iopadmap: Add native support for negative-polarity output enable.	2021-11-09 15:40:16 +01:00
Pepijn de Vos	c2d358484f	Gowin: deal with active-low tristate (#2971) ... * deal with active-low tristate * remove empty port * update sim models * add expected lut1 to tests	2021-08-20 21:21:06 +02:00
Marcelina Kościelnicka	c73ebeb90e	gowin: Use dfflegalize.	2020-07-06 12:27:46 +02:00
Marcelina Kościelnicka	88e7f90663	Update dff2dffe, dff2dffs, zinit to new FF types.	2020-06-23 18:24:53 +02:00
Marcelina Kościelnicka	aee439360b	Add force_downto and force_upto wire attributes. ... Fixes #2058.	2020-05-19 01:42:40 +02:00
Pepijn de Vos	72d03dc910	attempt to fix formatting	2019-11-25 14:50:34 +01:00
Pepijn de Vos	6c79abbf5a	gowin: add and test dff init values	2019-11-25 14:33:21 +01:00
Pepijn de Vos	8ab412eb16	Remove dff init altogether ... The hardware does not actually support it. In reality it is always initialised to its reset value.	2019-11-19 15:53:44 +01:00
Pepijn de Vos	ab8c521030	fix fsm test with proper clock enable polarity	2019-11-11 17:51:26 +01:00
Pepijn de Vos	0e5dbc4abc	fix wide luts	2019-11-06 19:48:18 +01:00
Pepijn de Vos	f88335a8a5	add wide luts	2019-10-28 12:49:08 +01:00
Pepijn de Vos	03457ee13e	add a few more missing dff	2019-10-21 16:08:13 +02:00
Pepijn de Vos	8a2699c40c	add negedge DFF	2019-10-21 12:31:11 +02:00
Pepijn de Vos	2fb20f184a	Revert "add MUX support" ... It turns out that they make everything worse and they don't PnR. This reverts commit 3eff2271d0.	2019-09-06 11:28:17 +02:00
Pepijn de Vos	1b9f7f49b5	add more DFF to sim lib	2019-09-06 09:01:07 +02:00
Pepijn de Vos	5168b6ffa4	WIP aditional DFF primitives	2019-09-05 19:12:47 +02:00
Pepijn de Vos	3eff2271d0	add MUX support	2019-09-05 13:36:41 +02:00
Diego	f9272fc56d	GoWin enablement: DRAM, initial BRAM, DRAM init, DRAM sim and synth_gowin flow	2019-04-12 23:40:02 -05:00
Clifford Wolf	cae5131bac	Added initial version of "synth_gowin"	2016-11-01 11:31:13 +01:00