With the various FPGA now supported, being able to generate valid verilog patterns
that will be infered correctly is now complicated.
Use our local version of emit_verilog to be able to specialize more easily the generated
code.
This will also allow use to progressively remplace Migen's Memory.
Efinity synthesizer cannot infer RAM blocks with write enable.
In order to workaround this (at least for the Litex SoC intergrated
RAM/ROM) a dirty modified Memory class has been created.
This class needs to be rewrite !
DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working
In some simulation cases, it's easier to add debug traces directly in the code
than in the verilog/Migen testbench. This adds support for verilog $display in
Migen code.
Being able to terminate a simulation from the code is also useful, this also
add support for verilog $finish.
nextpnr expects TRELLIS_IO on all ios, it's not possible to ensure that with a wrapper.
We now just modify the generated verilog to insert the io constraints and TRELLIS_IOs.
This is needed to specify timing constraints on some Lattice Diamond
library specials, like the EHXPLLL.
To keep backwards compatibility we allow the directive to still be a
single string. If it's not, we assume it's an iterable.
read/write clocks don't have the same frequencies, using AsyncResetSynchronizers cause differents delay when releasing reset and can cause pointers overlap.
With continous update, VCD header needs to be writen at the beginning of the simulation.
When a new signal is created, we rewrite the header and the content.
We have to find a way to eliminate all replaced memory ports from specials,
here we use a workaround and remove remaining _MemPorts before simulating.
If possible, proper way would be to remove replaced ports from specials.
Another solution can to remove all ports that are no longer associated with
a Memory.
* fhdl/visit: determinism
* structure/Case/makedefault: fix corner cases
* fhdl/tools: apply lowerer to specials in deterministic order
* fhdl/verilog: fix variable name conflict
* fhdl/verilog: simpler names for IOs. Closes#40
* fhdl/namer: deterministic naming of signals with name_override
* use https url for m-labs.hk
* pipistrello: make PMOD an extension header
* vivado: find clock nets by get_nets, not get_ports
* build: support platform-independent false path designation
* sim: add more signals to VCD (#36)
* build/xilinx: fix error message when Xilinx toolchain directory exists but does not contain a ISE version directory. Closes#39
* kc705: make xadc an extension header
* kc705: add xadc/ams gpios
* Merge branch 'master' of github.com:m-labs/migen
* conda: fix for conda-build > 1.19
* platforms/kc705: enable on-die termination for user_sma_clock
* README: update
* Revert "conda: use BUILDNUMBER from environment."
This reverts commit b2eedfd2e24f0b83c2fb118a3f98cf349b256e91.
* conda: use BUILDNUMBER from environment.
* typo
* Exception now has helpful string.
* README: remove outdated build badge
* sim: run MemoryToArray before lowering specials
* fhdl/simplify/MemoryToArray: remove spurious memory ports from specials
* sim: make unlowered specials an error
* sim: lower specials, closes#34
* sim: support evaluating Replicate()
* Revert "README.md->rst"
* Prevent backslashes in (Windows) paths from being escaped by OpenOCD's TCL implementation.
* Revert "conda: run tests as a part of package build."
* Revert "setuptools: include examples as migen.examples."
* Revert "test: also look for examples in [.../dist-packages]/migen/examples/."
* conda: use source from the current checkout.
* travis: disable (superseded by our buildbot).
* test: also look for examples in [.../dist-packages]/migen/examples/.
* setuptools: include examples as migen.examples.
* conda: run tests as a part of package build.
* build: return to current working directory after building
* sim/vcd: support signals not appearing in FHDL
* sim: deterministic clock iteration
* sim: add support for passive generators
* fhdl/structure: fix last test in _Value.__bool__ (a instead of b)
