When a PLL output is connected to a BUFG, it can only be connected to it.
The message is improved in mentioning it and listing all ports connected and the pll name.
This simplify debug.
Adding freeing of the addition/subtraction mode switch PIP.
We're limiting optimization to just one constant input—cases with two
constant inputs are rare, and this raises questions about how such ALUs
are generated in synthesis.
LUT knowledge calculations have been replaced with table
constants—faster and easier to verify.
Addresses https://github.com/YosysHQ/apicula/issues/514
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
POSIX allows any `int` value to be returned but specifies that only
the low 8 bits are available in some contexts:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/_exit.html
For reasons that aren't entirely clear, WASI requires the value to be
in range [0;126), and this is enforced with an assertion at runtime
level in Wasmtime. This should probably be fixed in Wasmtime but until
it is done there doesn't seem to be any harm in returning `125` instead
of `-1`. This also removes any discrepancy due to truncation.
* generic: Fix Python path not including the examples/ directory in the example
It seems that at some point, the embedded Python stopped including the
directory that nextpnr-generic was executed in inside of its sys.path.
This likely happened by de3d5be8 specifying an explicit argv to
the interpreter init function.
* generic: Improve the example for K != 4
Configuring K < 4 used to result in "dangling" inputs to the cells being
generated (those are just not driven by anything in the resulting Verilog/JSON).
Configuring K > 4 used to result in an assertion crash in cells.cc.
The ctx.setLutK call fixes both cases.
Define open_(o|i)fstream_and_log_error in log.h to:
- quote 'filename'
- add error cause to easier troubleshoot
- use existing consistent string style
- easily allows OS specific message
Introduce it when file are opened and add it where error message
was missing.
* gatemate: removing recursion in GateMateImpl::reassign_bridges
* gatemate: improving comments in GateMateImpl:reassign_bridges
* gatemate: making naming more consistent, adding comments about the need for recursion removal
mrcmry
gatecat
YRabbit
Rowan Goemans
William D. Jones
Michael Offel
Patrick Urban
Catherine
Josef Gajdusek
Lunaphied
sylefeb