nextpnr/himbaechel/uarch
YRabbit 85210caea4 Gowin. FFs in IO. Changing diagnostic messages.
Placement modes are still specified by the command line keys
ireg_in_iob/oreg_in_iob/ioreg_in_iob, but also introduces more granular
control in the form of attributes at I/O ports:

  (* NOIOBFF *) - registers are never placed in this IO,

  (* IOBFF *) - registers must be placed in this IO, in case of failure
  a warning (not an error) with the reason for nonplacement is issued,

  _attribute_absence_ - no diagnostics will be issued: managed to place - good, failed - not bad either.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
2024-12-18 12:34:45 +10:00
..
example Add GroupId related calls to Himbaechel API (#1399) 2024-12-05 13:59:33 +01:00
gowin Gowin. FFs in IO. Changing diagnostic messages. 2024-12-18 12:34:45 +10:00
ng-ultra Adding NanoXplore NG-Ultra support (#1397) 2024-12-04 09:00:05 +01:00
xilinx Himbaechel Xilinx : XDC commands : Also search nets with lowercase for better interoperability with other synthesis tools and RTL languages 2024-10-01 15:24:40 +02:00