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Author SHA1 Message Date
whitequark cb81618c28 sim._pyrtl: fix miscompilation of -(Const(0b11, 2).as_signed()). 
Fixes #473.
 2020-08-26 04:15:54 +00:00
whitequark 0802f943ba lib.cdc: in AsyncFFSynchronizer(), rename domain= to o_domain=. 
This is for consistency with other synchronizers.

Fixes #467.
 2020-08-26 03:19:13 +00:00
Robin Ole Heinemann 630c0fd99a vendor.lattice_machxo_2_3l: add SRAM svf generation 2020-08-24 14:41:14 +00:00
Mariusz Glebocki 4e208b0ac1 vendor: Add initial support for Symbiflow for Xilinx 7-series 2020-08-24 14:39:10 +00:00
Mariusz Glebocki 77616837e8 vendor.xilinx_7series: add _part property getter 2020-08-24 14:39:10 +00:00
Xiretza 15f150337f cli: Improve help texts 
545e49c2 added the option to export as CXXRTL, but the help texts for
the CLI options don't reflect this yet.
 2020-08-22 14:41:37 +00:00
whitequark e46118dac0 docs/lang: use less confusing placeholder variable names. 
Fixes #474.
 2020-08-15 13:01:09 +00:00
awygle 73f672f57c
lib.fifo: add r_level and w_level to all FIFOs 2020-08-15 08:40:56 +00:00
whitequark f6f9d68f24 Add Linguist tags to .gitattributes. 
This should make it possible to navigate to nmigen/vendor/*.py using
GitHub's file finder.
 2020-08-13 03:12:39 +00:00
Robin Ole Heinemann b86acdc601 vendor.lattice_{ecp5,machxo_2_3l}: specify impl-dir correctly 2020-08-10 17:52:47 +00:00
whitequark d964ba9cc4 build,vendor: never carry around parts of differential signals. 
When a port component is skipped, it should appear neither in the RTL
nor in the constraint file. However, passing around components of
differential ports explicitly makes that harder.

Fixes #456.
Supersedes #457.

Co-authored-by: Jean THOMAS <git0@pub.jeanthomas.me>
 2020-07-31 18:41:59 +00:00
whitequark c9662c5ff8 vendor.xilinx_{7series,ultrascale}: use BUFGCTRL rather than BUFGCE. 
Fixes #438 (again).
 2020-07-31 17:48:22 +00:00
Adam Greig 07dc163105
hdl.mem: cast reset value for transparent read ports to integer. 2020-07-30 07:05:18 +00:00
Jean THOMAS 20f9ab9d7a
nmigen.lib.scheduler: add RoundRobin. 2020-07-28 21:02:01 +00:00
Jacob Graves 8117ef6692
tests: fix remove unnecessary workaround for some unittest assertions. 2020-07-28 19:35:25 +00:00
whitequark c75fa45fd8 vendor.xilinx_{7series,ultrascale}: add SIM_DEVICE parameter. 
The parameter defaults to "ULTRASCALE", even when synthesizing for
7-series devices. This could lead to a simulation/synthesis mismatch,
and causes a warning.

Fixes #438.
 2020-07-23 16:38:28 +00:00
Jean THOMAS f7a8fcc94c
vendor.lattice_ecp5: add missing differential IO types. 2020-07-23 12:24:31 +00:00
whitequark 7aedb3e770 back.rtlil: lower maximum accepted wire size. 
In practice wires of just 100000 bits sometimes have unacceptable
performance with Yosys, so stick to Verilog's minimum limit of 65536
bits.
 2020-07-22 14:43:44 +00:00
whitequark 1321c4591d sim._pycoro: avoid spurious wakeups. 
This bug was introduced in commit e435a217.
 2020-07-22 14:32:45 +00:00
whitequark d71e19e27c CI: replace Travis with GitHub Actions. 
Fixes #445.
 2020-07-22 09:28:35 +00:00
whitequark 0899ff366b compat.fhdl.bitcontainer: fix value_bits_sign(). 
This function was broken in commit 659b0e81; some downstream code
expects bits_sign to be e.g. indexable.
 2020-07-21 02:53:29 +00:00
whitequark 5ccc2122ce CI: use WASM yosys instead of building our own. 
Fixes #434.
 2020-07-16 08:41:53 +00:00
whitequark d06add0aab back.rtlil: fix guard for division by zero. 
Oops... that should be checking the divisor, not the dividend. This
was discovered by running the test suite on cxxsim.
 2020-07-15 04:14:34 +00:00
Filipe Laíns d714d78de1 docs: add install instructions for arch 
Signed-off-by: Filipe Laíns <lains@archlinux.org>
 2020-07-14 00:28:24 +00:00
whitequark 127fce8f48 CI: run on pull requests as well, not just pushes. 2020-07-14 00:25:11 +00:00
whitequark ecb3a69d48 lib.cdc: fix typo. 
Co-authored-by: @ECP5-PCIe
 2020-07-13 23:53:15 +00:00
Jacob Lifshay 58f1d4bcb6
sim.pysim: write the next, not curr signal value to the VCD file 
This is a temporary fix for #429.
 2020-07-13 02:10:01 +00:00
whitequark 0a90aa1b17 sim.pysim: use VCD aliases to reduce space and time overhead. 
On Minerva SoC, this reduces VCD file size by about 35%, and reduces
runtime overhead of writing VCDs by 10% or less.
 2020-07-11 12:26:34 +00:00
whitequark 30e2f91176 sim: simplify. NFC. 2020-07-08 17:31:53 +00:00
whitequark d7a87fef42 back.pysim→sim.pysim; split into more manageable parts. 
This is necessary to add cxxrtl as an alternate simulation engine.
 2020-07-08 12:49:38 +00:00
whitequark 23da2fdda6 vendor.xilinx_{7series,ultrascale}: remove grade property. 
This was added in commit bfd4538d based on a misunderstanding of how
Xilinx part numbers work.
 * non-ultrascale 7-series parts don't have temperature grades;
 * ultrascale parts have temperature grade as a part of speed grade.
 2020-07-08 09:08:00 +00:00
whitequark 6d417568ad back.pysim: only extract signal names if VCD is requested. 
This commit also fixes an issue introduced in 2606ee33 that regressed
simulator startup time and bloated VCD files. (It's actually about
10% faster now than *before* the regression was introduced.)
 2020-07-08 08:33:45 +00:00
whitequark 3c3cfd48fb back.pysim: reset timeline as well. 
This is a bug that was introduced in 94faf497b.
 2020-07-08 08:19:29 +00:00
whitequark 90e2a991f0 back.pysim: simplify. NFC. 2020-07-08 06:31:04 +00:00
whitequark 94faf497ba back.pysim: extract timeline handling to class _Timeline. NFC. 2020-07-08 06:31:04 +00:00
whitequark d3d210eaee back.pysim: extract simulator commands to sim._cmds. NFC. 2020-07-08 05:42:33 +00:00
whitequark e435a21715 back.pysim: simplify. NFC. 2020-07-08 03:55:09 +00:00
awygle 659b0e8189
hdl.ast: don't inherit Shape from NamedTuple. 
Fixes #421.
 2020-07-07 05:17:03 +00:00
whitequark cee43f0de1 back.pysim: simplify. 
Compiled process names were never particularly useful (comments in
the source would make more sense for debugging), and coroutine
process names were actually source locations.
 2020-07-07 04:29:13 +00:00
whitequark c9030eb3cd back.pysim: simplify. NFC. 2020-07-07 04:19:05 +00:00
whitequark db4529a178 back.pysim: simplify. NFC. 2020-07-07 04:09:10 +00:00
whitequark 2efeb05c63 back.pysim: synchronize waveform writing with cxxrtl. 2020-07-07 04:09:02 +00:00
whitequark e012e62ade back.pysim: synchronize terms with cxxrtl. NFC. 2020-07-07 03:38:39 +00:00
whitequark c9ac85a045 back.pysim: simplify. NFC. 2020-07-07 03:38:39 +00:00
whitequark 8f6eab0f6c back.pysim: simplify. NFC. 2020-07-07 03:38:39 +00:00
whitequark 23758e30bc Remove everything deprecated in nmigen 0.2. 2020-07-07 03:38:39 +00:00
Alan Green 3a4576e033 Update license and copyright info 
Remove non-license explanatory text from LICENSE.txt.

Create CONTRIBUTING file with instructions and notes for contributors.

This change relates to issue #412
 2020-07-06 23:11:10 +00:00
Konrad Beckmann d4946b060a vendor.lattice_ecp5: Add support for io with xdr=7 
This adds support for IOs with xdr=7 using the
IODDR71B and ODDR71B primitives.
 2020-07-06 16:12:07 +00:00
Konrad Beckmann 981e674081 vendor.lattice_ecp5: Add support for io with xdr=4 
This adds support for IOs with xdr=4 using the
IDDRX2F and ODDRX2F primitives.
 2020-07-06 16:12:07 +00:00
whitequark 175c8a596e docs: use working sphinxcontrib-platformpicker. 2020-07-05 23:51:14 +00:00