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Author SHA1 Message Date
whitequark 3d7214cb70 vendor.xilinx_spartan_3_6: reconsider bitgen defaults. 
Previously changed in 27063a3b.

I haven't realized the .bin file is the same as the .bit file without
a small header. That means generating it is free and it's just easier
to let programming tools to be able to always rely on its existence.
 2019-08-04 23:28:09 +00:00
whitequark 27063a3bd3 vendor.xilinx_spartan_3_6: set bitgen defaults to -g Binary:Yes -g Compress. 
* `-g Binary:Yes` should be overridable.
  * `-g Compress` is a good default.
 2019-08-04 14:18:49 +00:00
whitequark 65da905c15 vendor.xilinx_spartan_3_6: always use -w for map/par/bitgen. 
-w stands for "override output file", and supplying user options
should not remove it.
 2019-08-04 14:12:02 +00:00
whitequark 15e8dfe532 vendor.xilinx_spartan_3_6: do not use retiming by default. 
This was added in b404d603, probably by mistake, and is certainly
wrong given that we do not (yet) correctly mark CDC FFs.
 2019-08-04 13:48:33 +00:00
whitequark 6b025df12c vendor.xilinx_spartan_3_6: force use of bash on UNIX. 2019-08-04 13:20:54 +00:00
whitequark 8854ca03ae build.plat,vendor: automatically create sync domain from default_clk. 
But only if it is not defined by the programmer.

Closes #57.
 2019-08-03 18:36:58 +00:00
N. Engelhardt 5fd8a796ae vendor: don't emit duplicate iobuf submodule names. 
These are no longer allowed after commit 698b005.
 2019-07-21 07:49:21 +00:00
William D. Jones b404d603fb vendor.xilinx_spartan_3_6: Add Spartan3A family support. 2019-07-07 20:44:48 +00:00
Renamed from nmigen/vendor/xilinx_spartan6.py (Browse further)