mirror of https://github.com/YosysHQ/nextpnr.git
b4da86edce
* Gowin. Add GW5AST-138C chip.
The ability to perform P&R for the largest GW5A series chip currently
available has been added, which has its own characteristics:
- the need to invert pin function configuration signals - these
signals are not part of the design, but are nextpnr command line
keys for specifying the activation of alternative pin functions such as
I2C;
- some clock PIPs are encoded not by fuses, but by applying VCC/GND to
special inputs. This is also not part of the design and is not a
dynamic clock selection primitive - it is simply an addition to the
fuses.
- added check for DFF and SSRAM placement in upper slots - prior to
this chip, SSRAM was not supported and there was no need for this
check.
- since the chip is divided into two parts in terms of the global
clock network, a flag is introduced to indicate which part the wire
belongs to. This is only requested for clock wires.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. Fix style.
Use C++ type cast.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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| .. | ||
| himbaechel_dbgen | ||
| uarch | ||
| .gitignore | ||
| CMakeLists.txt | ||
| arch.cc | ||
| arch.h | ||
| arch_pybindings.cc | ||
| arch_pybindings.h | ||
| archdefs.h | ||
| chipdb.h | ||
| himbaechel_api.cc | ||
| himbaechel_api.h | ||
| himbaechel_constids.h | ||
| himbaechel_gfxids.h | ||
| himbaechel_helpers.cc | ||
| himbaechel_helpers.h | ||
| main.cc | ||