yosys.git
4 years agoUpdated test to use assert-max
Miodrag Milanovic [Tue, 28 Jan 2020 17:26:10 +0000 (18:26 +0100)]
Updated test to use assert-max

4 years agoFix for non-deterministic test
Miodrag Milanovic [Sat, 7 Dec 2019 10:09:25 +0000 (11:09 +0100)]
Fix for non-deterministic test

4 years agoMerge pull request #1555 from antmicro/fix-macc-xilinx-test
Eddie Hung [Sat, 7 Dec 2019 07:04:04 +0000 (23:04 -0800)]
Merge pull request #1555 from antmicro/fix-macc-xilinx-test

tests: arch: xilinx: Change order of arguments in macc.sh

4 years agotests: arch: xilinx: Change order of arguments in macc.sh
Jan Kowalewski [Fri, 6 Dec 2019 08:01:16 +0000 (09:01 +0100)]
tests: arch: xilinx: Change order of arguments in macc.sh

4 years agoMerge pull request #1551 from whitequark/manual-cell-operands
Clifford Wolf [Thu, 5 Dec 2019 16:24:24 +0000 (08:24 -0800)]
Merge pull request #1551 from whitequark/manual-cell-operands

Clarify semantics of comb cells, in particular shifts

4 years agokernel: require \B_SIGNED=0 on $shl, $sshl, $shr, $sshr.
whitequark [Wed, 4 Dec 2019 11:59:36 +0000 (11:59 +0000)]
kernel: require \B_SIGNED=0 on $shl, $sshl, $shr, $sshr.

Before this commit, these cells would accept any \B_SIGNED and in
case of \B_SIGNED=1, would still treat the \B input as unsigned.

Also fix the Verilog frontend to never emit such constructs.

4 years agomanual: document behavior of many comb cells more precisely.
whitequark [Wed, 4 Dec 2019 11:06:05 +0000 (11:06 +0000)]
manual: document behavior of many comb cells more precisely.

4 years agoxilinx: Add tristate buffer mapping. (#1528)
Marcin Kościelnicki [Wed, 4 Dec 2019 08:44:00 +0000 (09:44 +0100)]
xilinx: Add tristate buffer mapping. (#1528)

Fixes #1225.

4 years agoiopadmap: Refactor and fix tristate buffer mapping. (#1527)
Marcin Kościelnicki [Wed, 4 Dec 2019 07:44:08 +0000 (08:44 +0100)]
iopadmap: Refactor and fix tristate buffer mapping. (#1527)

The previous code for rerouting wires when inserting tristate buffers
was overcomplicated and didn't handle all cases correctly (in
particular, only cell connections were rewired — internal connections
were not).

4 years agoxilinx: Add models for LUTRAM cells. (#1537)
Marcin Kościelnicki [Wed, 4 Dec 2019 05:31:09 +0000 (06:31 +0100)]
xilinx: Add models for LUTRAM cells. (#1537)

4 years agoMerge pull request #1524 from pepijndevos/gowindffinit
Clifford Wolf [Tue, 3 Dec 2019 16:43:18 +0000 (08:43 -0800)]
Merge pull request #1524 from pepijndevos/gowindffinit

Gowin: add and test DFF init values

4 years agoupdate test
Pepijn de Vos [Tue, 3 Dec 2019 15:56:15 +0000 (16:56 +0100)]
update test

4 years agoUse -match-init to not synth contradicting init values
Pepijn de Vos [Tue, 3 Dec 2019 14:12:25 +0000 (15:12 +0100)]
Use -match-init to not synth contradicting init values

4 years agoMerge pull request #1542 from YosysHQ/dave/abc9-loop-fix
David Shah [Mon, 2 Dec 2019 10:20:21 +0000 (10:20 +0000)]
Merge pull request #1542 from YosysHQ/dave/abc9-loop-fix

abc9: Fix breaking of SCCs

4 years agoMerge pull request #1539 from YosysHQ/mwk/ilang-bounds-check
Clifford Wolf [Mon, 2 Dec 2019 00:30:48 +0000 (16:30 -0800)]
Merge pull request #1539 from YosysHQ/mwk/ilang-bounds-check

read_ilang: do bounds checking on bit indices

4 years agoabc9: Fix breaking of SCCs
David Shah [Sun, 1 Dec 2019 20:44:56 +0000 (20:44 +0000)]
abc9: Fix breaking of SCCs

Signed-off-by: David Shah <dave@ds0.me>
4 years agoMerge pull request #1540 from YosysHQ/mwk/xilinx-bufpll
Miodrag Milanović [Fri, 29 Nov 2019 16:33:41 +0000 (17:33 +0100)]
Merge pull request #1540 from YosysHQ/mwk/xilinx-bufpll

xilinx: Add missing blackbox cell for BUFPLL.

4 years agoxilinx: Add missing blackbox cell for BUFPLL.
Marcin Kościelnicki [Fri, 29 Nov 2019 15:55:29 +0000 (15:55 +0000)]
xilinx: Add missing blackbox cell for BUFPLL.

4 years agoRevert "Fold loop"
Eddie Hung [Thu, 28 Nov 2019 05:55:56 +0000 (21:55 -0800)]
Revert "Fold loop"

This reverts commit a30d5e1cc35791a98b2269c5e587c566fe8b0a35.

4 years agoread_ilang: do bounds checking on bit indices
Marcin Kościelnicki [Wed, 27 Nov 2019 21:24:39 +0000 (22:24 +0100)]
read_ilang: do bounds checking on bit indices

4 years agoMerge pull request #1536 from YosysHQ/eddie/xilinx_dsp_muladd
Eddie Hung [Wed, 27 Nov 2019 16:00:22 +0000 (08:00 -0800)]
Merge pull request #1536 from YosysHQ/eddie/xilinx_dsp_muladd

xilinx_dsp: consider sign and zero-extension when packing post-multiplier adder

4 years agoMerge pull request #1501 from YosysHQ/dave/mem_copy_attr
Clifford Wolf [Wed, 27 Nov 2019 10:25:23 +0000 (11:25 +0100)]
Merge pull request #1501 from YosysHQ/dave/mem_copy_attr

memory_collect: Copy attr from RTLIL::Memory to  cell

4 years agoMerge pull request #1534 from YosysHQ/mwk/opt_share-fix
Clifford Wolf [Wed, 27 Nov 2019 10:23:16 +0000 (11:23 +0100)]
Merge pull request #1534 from YosysHQ/mwk/opt_share-fix

opt_share: Fix handling of fine cells.

4 years agoMerge pull request #1535 from YosysHQ/eddie/write_xaiger_improve
Eddie Hung [Wed, 27 Nov 2019 09:04:29 +0000 (01:04 -0800)]
Merge pull request #1535 from YosysHQ/eddie/write_xaiger_improve

write_xaiger improvements

4 years agoNo need for -abc9
Eddie Hung [Wed, 27 Nov 2019 07:08:14 +0000 (23:08 -0800)]
No need for -abc9

4 years agoopt_share: Fix handling of fine cells.
Marcin Kościelnicki [Tue, 26 Nov 2019 23:46:21 +0000 (00:46 +0100)]
opt_share: Fix handling of fine cells.

Fixes #1525.

4 years agolatch -> box
Eddie Hung [Wed, 27 Nov 2019 06:59:05 +0000 (22:59 -0800)]
latch -> box

4 years agoAdd citation
Eddie Hung [Wed, 27 Nov 2019 06:51:16 +0000 (22:51 -0800)]
Add citation

4 years agoCheck for either sign or zero extension for postAdd packing
Eddie Hung [Wed, 27 Nov 2019 05:26:53 +0000 (21:26 -0800)]
Check for either sign or zero extension for postAdd packing

4 years agoRemove notes
Eddie Hung [Wed, 27 Nov 2019 06:41:35 +0000 (22:41 -0800)]
Remove notes

4 years agoFold loop
Eddie Hung [Mon, 25 Nov 2019 23:43:37 +0000 (15:43 -0800)]
Fold loop

4 years agoDo not sigmap keep bits inside write_xaiger
Eddie Hung [Mon, 25 Nov 2019 23:42:07 +0000 (15:42 -0800)]
Do not sigmap keep bits inside write_xaiger

4 years agoxaiger: do not promote output wires
Eddie Hung [Wed, 27 Nov 2019 03:03:02 +0000 (19:03 -0800)]
xaiger: do not promote output wires

4 years agoAdd testcase derived from fastfir_dynamictaps benchmark
Eddie Hung [Wed, 27 Nov 2019 05:26:30 +0000 (21:26 -0800)]
Add testcase derived from fastfir_dynamictaps benchmark

4 years agoxilinx: Add simulation models for IOBUF and OBUFT.
Marcin Kościelnicki [Tue, 26 Nov 2019 04:04:28 +0000 (05:04 +0100)]
xilinx: Add simulation models for IOBUF and OBUFT.

4 years agoclkbufmap: Add support for inverters in clock path.
Marcin Kościelnicki [Sun, 24 Nov 2019 15:05:45 +0000 (16:05 +0100)]
clkbufmap: Add support for inverters in clock path.

4 years agoxilinx: Use INV instead of LUT1 when applicable
Marcin Kościelnicki [Sun, 24 Nov 2019 13:17:46 +0000 (14:17 +0100)]
xilinx: Use INV instead of LUT1 when applicable

4 years agoattempt to fix formatting
Pepijn de Vos [Mon, 25 Nov 2019 13:50:34 +0000 (14:50 +0100)]
attempt to fix formatting

4 years agogowin: add and test dff init values
Pepijn de Vos [Mon, 25 Nov 2019 13:33:21 +0000 (14:33 +0100)]
gowin: add and test dff init values

5 years agoMerge pull request #1520 from pietrmar/fix-1463
Eddie Hung [Sat, 23 Nov 2019 06:45:40 +0000 (22:45 -0800)]
Merge pull request #1520 from pietrmar/fix-1463

coolrunner2: remove spurious log_pop() call, fixes #1463

5 years agocoolrunner2: remove spurious log_pop() call, fixes #1463
Martin Pietryka [Sat, 23 Nov 2019 05:18:23 +0000 (06:18 +0100)]
coolrunner2: remove spurious log_pop() call, fixes #1463

This was causing a segmentation fault because there is no accompanying
log_push() call so header_count.size() became -1.

Signed-off-by: Martin Pietryka <martin@pietryka.at>
5 years agoMerge pull request #1517 from YosysHQ/clifford/optmem
Clifford Wolf [Fri, 22 Nov 2019 17:11:58 +0000 (18:11 +0100)]
Merge pull request #1517 from YosysHQ/clifford/optmem

Add "opt_mem" pass

5 years agoMerge pull request #1515 from YosysHQ/clifford/svastuff
Clifford Wolf [Fri, 22 Nov 2019 17:10:34 +0000 (18:10 +0100)]
Merge pull request #1515 from YosysHQ/clifford/svastuff

Add Verific/SVA support for "always" and "nexttime" properties

5 years agoAdd "opt_mem" pass
Clifford Wolf [Fri, 22 Nov 2019 15:58:49 +0000 (16:58 +0100)]
Add "opt_mem" pass

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd Verific support for SVA nexttime properties
Clifford Wolf [Fri, 22 Nov 2019 15:11:56 +0000 (16:11 +0100)]
Add Verific support for SVA nexttime properties

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoImprove handling of verific primitives in "verific -import -V" mode
Clifford Wolf [Fri, 22 Nov 2019 15:00:07 +0000 (16:00 +0100)]
Improve handling of verific primitives in "verific -import -V" mode

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd Verific SVA support for "always" properties
Clifford Wolf [Fri, 22 Nov 2019 14:52:21 +0000 (15:52 +0100)]
Add Verific SVA support for "always" properties

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #1511 from YosysHQ/dave/always
Clifford Wolf [Fri, 22 Nov 2019 14:32:29 +0000 (15:32 +0100)]
Merge pull request #1511 from YosysHQ/dave/always

sv: Error checking for always_comb, always_latch and always_ff

5 years agogowin: Remove show command from tests.
Marcin Kościelnicki [Fri, 22 Nov 2019 11:15:33 +0000 (12:15 +0100)]
gowin: Remove show command from tests.

5 years agogowin: Add missing .gitignore entries
Marcin Kościelnicki [Fri, 22 Nov 2019 11:10:57 +0000 (12:10 +0100)]
gowin: Add missing .gitignore entries

5 years agoUpdate CHANGELOG and README
David Shah [Fri, 22 Nov 2019 12:46:19 +0000 (12:46 +0000)]
Update CHANGELOG and README

Signed-off-by: David Shah <dave@ds0.me>
5 years agosv: Add tests for SV always types
David Shah [Thu, 21 Nov 2019 21:06:28 +0000 (21:06 +0000)]
sv: Add tests for SV always types

Signed-off-by: David Shah <dave@ds0.me>
5 years agoproc_dlatch: Add error handling for incorrect always_(ff|latch|comb) usage
David Shah [Thu, 21 Nov 2019 20:46:41 +0000 (20:46 +0000)]
proc_dlatch: Add error handling for incorrect always_(ff|latch|comb) usage

Signed-off-by: David Shah <dave@ds0.me>
5 years agosv: Correct parsing of always_comb, always_ff and always_latch
David Shah [Thu, 21 Nov 2019 20:27:19 +0000 (20:27 +0000)]
sv: Correct parsing of always_comb, always_ff and always_latch

Signed-off-by: David Shah <dave@ds0.me>
5 years agoMerge pull request #1507 from YosysHQ/clifford/verificfixes
Clifford Wolf [Wed, 20 Nov 2019 12:49:27 +0000 (13:49 +0100)]
Merge pull request #1507 from YosysHQ/clifford/verificfixes

Some fixes in our Verific integration

5 years agoCorrectly treat empty modules as blackboxes in Verific
Clifford Wolf [Wed, 20 Nov 2019 11:56:31 +0000 (12:56 +0100)]
Correctly treat empty modules as blackboxes in Verific

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoDo not rename VHDL entities to "entity(impl)" when they are top modules
Clifford Wolf [Wed, 20 Nov 2019 11:54:10 +0000 (12:54 +0100)]
Do not rename VHDL entities to "entity(impl)" when they are top modules

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #1449 from pepijndevos/gowin
Clifford Wolf [Tue, 19 Nov 2019 16:29:27 +0000 (17:29 +0100)]
Merge pull request #1449 from pepijndevos/gowin

Improvements for gowin support

5 years agoRemove dff init altogether
Pepijn de Vos [Tue, 19 Nov 2019 14:53:44 +0000 (15:53 +0100)]
Remove dff init altogether

The hardware does not actually support it.
In reality it is always initialised to its reset value.

5 years agoFix #1462, #1480.
Marcin Kościelnicki [Mon, 18 Nov 2019 07:19:53 +0000 (08:19 +0100)]
Fix #1462, #1480.

5 years agoxilinx: Add simulation models for MULT18X18* and DSP48A*.
Marcin Kościelnicki [Mon, 18 Nov 2019 02:47:56 +0000 (03:47 +0100)]
xilinx: Add simulation models for MULT18X18* and DSP48A*.

This adds simulation models for the following primitives:

- MULT18X18 and MULT18X18S (Virtex 2*, Spartan 3)
- MULT18X18SIO (Spartan 3E, Spartan 3A)
- DSP48A (Spartan 3A DSP) — implemented in terms of DSP48A1
- DSP48A1 (Spartan 6)

5 years agomemory_collect: Copy attr from RTLIL::Memory to cell
David Shah [Mon, 18 Nov 2019 13:58:03 +0000 (13:58 +0000)]
memory_collect: Copy attr from RTLIL::Memory to  cell

Signed-off-by: David Shah <dave@ds0.me>
5 years agoadd help for nowidelut and abc9 options
Pepijn de Vos [Mon, 18 Nov 2019 13:25:46 +0000 (14:25 +0100)]
add help for nowidelut and abc9 options

5 years agoMerge pull request #1497 from YosysHQ/mwk/extract-fa-fix
Clifford Wolf [Mon, 18 Nov 2019 09:53:14 +0000 (10:53 +0100)]
Merge pull request #1497 from YosysHQ/mwk/extract-fa-fix

Fix #1496.

5 years agoMerge pull request #1494 from whitequark/write_verilog-extmem
whitequark [Mon, 18 Nov 2019 09:37:14 +0000 (09:37 +0000)]
Merge pull request #1494 from whitequark/write_verilog-extmem

write_verilog: add -extmem option, to write split memory init files

5 years agoFix #1496.
Marcin Kościelnicki [Mon, 18 Nov 2019 03:16:48 +0000 (04:16 +0100)]
Fix #1496.

5 years agowrite_verilog: add -extmem option, to write split memory init files.
whitequark [Fri, 15 Nov 2019 03:11:46 +0000 (03:11 +0000)]
write_verilog: add -extmem option, to write split memory init files.

Some toolchains (in particular Quartus) are pathologically slow if
a large amount of assignments in `initial` blocks are used.

5 years agoMerge pull request #1492 from YosysHQ/dave/wreduce-fix-arst
Clifford Wolf [Sun, 17 Nov 2019 09:42:30 +0000 (10:42 +0100)]
Merge pull request #1492 from YosysHQ/dave/wreduce-fix-arst

wreduce: Don't trim zeros or sext when not matching ARST_VALUE

5 years agoMerge branch 'master' of https://github.com/YosysHQ/yosys into gowin
Pepijn de Vos [Sat, 16 Nov 2019 11:43:17 +0000 (12:43 +0100)]
Merge branch 'master' of https://github.com/YosysHQ/yosys into gowin

5 years agoecp5: Use new autoname pass for better cell/net names
David Shah [Fri, 15 Nov 2019 21:03:11 +0000 (21:03 +0000)]
ecp5: Use new autoname pass for better cell/net names

Signed-off-by: David Shah <dave@ds0.me>
5 years agowreduce: Don't trim zeros or sext when not matching ARST_VALUE
David Shah [Thu, 14 Nov 2019 18:43:15 +0000 (18:43 +0000)]
wreduce: Don't trim zeros or sext when not matching ARST_VALUE

Signed-off-by: David Shah <dave@ds0.me>
5 years agoMerge pull request #1490 from YosysHQ/clifford/autoname
Clifford Wolf [Thu, 14 Nov 2019 17:03:44 +0000 (18:03 +0100)]
Merge pull request #1490 from YosysHQ/clifford/autoname

Add "autoname" pass and use it in "synth_ice40"

5 years agoMerge pull request #1444 from btut/feature/python_wrappers/globals_and_streams
Clifford Wolf [Thu, 14 Nov 2019 11:10:12 +0000 (12:10 +0100)]
Merge pull request #1444 from btut/feature/python_wrappers/globals_and_streams

Python Wrappers: Expose global variables and allow logging to python streams

5 years agoMerge pull request #1465 from YosysHQ/dave/ice40_timing_sim
Clifford Wolf [Thu, 14 Nov 2019 11:07:25 +0000 (12:07 +0100)]
Merge pull request #1465 from YosysHQ/dave/ice40_timing_sim

ice40: Support for post-place-and-route timing simulations

5 years agoMerge branch 'makaimann-label-bads-btor'
Clifford Wolf [Thu, 14 Nov 2019 10:57:53 +0000 (11:57 +0100)]
Merge branch 'makaimann-label-bads-btor'

5 years agoUse cell name for btor bad state props when it is a public name
Clifford Wolf [Thu, 14 Nov 2019 10:57:38 +0000 (11:57 +0100)]
Use cell name for btor bad state props when it is a public name

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge branch 'label-bads-btor' of https://github.com/makaimann/yosys into makaimann...
Clifford Wolf [Thu, 14 Nov 2019 10:52:41 +0000 (11:52 +0100)]
Merge branch 'label-bads-btor' of https://github.com/makaimann/yosys into makaimann-label-bads-btor

5 years agoAdd "autoname" pass and use it in "synth_ice40"
Clifford Wolf [Wed, 13 Nov 2019 12:41:16 +0000 (13:41 +0100)]
Add "autoname" pass and use it in "synth_ice40"

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #1488 from whitequark/flowmap-fixes
whitequark [Wed, 13 Nov 2019 11:57:17 +0000 (11:57 +0000)]
Merge pull request #1488 from whitequark/flowmap-fixes

flowmap: fix a few crashes

5 years agoMerge pull request #1486 from YosysHQ/clifford/fsmdetectfix
Clifford Wolf [Wed, 13 Nov 2019 11:34:27 +0000 (12:34 +0100)]
Merge pull request #1486 from YosysHQ/clifford/fsmdetectfix

Bugfix in fsm_detect

5 years agoUpdate fsm_detect bugfix
Clifford Wolf [Tue, 12 Nov 2019 16:31:30 +0000 (17:31 +0100)]
Update fsm_detect bugfix

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoBugfix in fsm_detect
Clifford Wolf [Tue, 12 Nov 2019 13:26:02 +0000 (14:26 +0100)]
Bugfix in fsm_detect

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #1484 from YosysHQ/clifford/cmp2luteqne
Clifford Wolf [Tue, 12 Nov 2019 09:24:12 +0000 (10:24 +0100)]
Merge pull request #1484 from YosysHQ/clifford/cmp2luteqne

Do not map $eq and $ne in cmp2lut, only proper arithmetic cmp

5 years agoAdd an info string symbol for bad states in btor backend
Makai Mann [Tue, 12 Nov 2019 00:40:51 +0000 (16:40 -0800)]
Add an info string symbol for bad states in btor backend

5 years agoflowmap: when doing mincut, ensure source is always in X, not X̅.
whitequark [Tue, 12 Nov 2019 00:15:43 +0000 (00:15 +0000)]
flowmap: when doing mincut, ensure source is always in X, not X̅.

Fixes #1475.

5 years agoflowmap: don't break if that creates a k+2 (and larger) LUT either.
whitequark [Mon, 11 Nov 2019 23:13:00 +0000 (23:13 +0000)]
flowmap: don't break if that creates a k+2 (and larger) LUT either.

Fixes #1405.

5 years agofix fsm test with proper clock enable polarity
Pepijn de Vos [Mon, 11 Nov 2019 16:51:26 +0000 (17:51 +0100)]
fix fsm test with proper clock enable polarity

5 years agoMerge branch 'master' of https://github.com/YosysHQ/yosys into gowin
Pepijn de Vos [Mon, 11 Nov 2019 16:08:40 +0000 (17:08 +0100)]
Merge branch 'master' of https://github.com/YosysHQ/yosys into gowin

5 years agoFixed tests
Miodrag Milanovic [Mon, 11 Nov 2019 14:41:33 +0000 (15:41 +0100)]
Fixed tests

5 years agoDo not map $eq and $ne in cmp2lut, only proper arithmetic cmp
Clifford Wolf [Mon, 11 Nov 2019 14:07:29 +0000 (15:07 +0100)]
Do not map $eq and $ne in cmp2lut, only proper arithmetic cmp

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #1470 from YosysHQ/clifford/subpassdoc
Clifford Wolf [Sun, 10 Nov 2019 10:00:38 +0000 (11:00 +0100)]
Merge pull request #1470 from YosysHQ/clifford/subpassdoc

Add CodingReadme section on script passes

5 years agoAdd check for valid macro names in macro definitions
Clifford Wolf [Thu, 7 Nov 2019 12:30:03 +0000 (13:30 +0100)]
Add check for valid macro names in macro definitions

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agofix wide luts
Pepijn de Vos [Wed, 6 Nov 2019 18:48:18 +0000 (19:48 +0100)]
fix wide luts

5 years agosynth_xilinx: Merge blackbox primitive libraries.
Marcin Kościelnicki [Fri, 1 Nov 2019 14:00:15 +0000 (14:00 +0000)]
synth_xilinx: Merge blackbox primitive libraries.

First, there are no longer separate cell libraries for xc6s/xc7/xcu.
Manually instantiating a primitive for a "wrong" family will result
in yosys passing it straight through to the output, and it will be
either upgraded or rejected by the P&R tool.

Second, the blackbox library is expanded to cover many more families:
everything from Spartan 3 up is included.  Primitives for Virtex and
Virtex 2 are listed in the Python file as well if we ever want to
include them, but that would require having two different ISE versions
(10.1 and 14.7) available when running cells_xtra.py, and so is probably
more trouble than it's worth.

Third, the blockram blackboxes are no longer in separate files — there
is no practical reason to do so (from synthesis PoV, they are no
different from any other cells_xtra blackbox), and they needlessly
complicated the flow (among other things, merging them allows the user
to use eg. Series 7 primitives and have them auto-upgraded to
Ultrascale).

Last, since xc5v logic synthesis appears to work reasonably well
(the only major problem is lack of blockram inference support), xc5v is
now an accepted setting for the -family option.

5 years agoFix write_aiger bug added in 524af21
Clifford Wolf [Mon, 4 Nov 2019 13:25:13 +0000 (14:25 +0100)]
Fix write_aiger bug added in 524af21

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd CodingReadme section on script passes
Clifford Wolf [Thu, 31 Oct 2019 09:46:20 +0000 (10:46 +0100)]
Add CodingReadme section on script passes

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agodon't cound exact luts in big muxes; futile and fragile
Pepijn de Vos [Wed, 30 Oct 2019 13:58:25 +0000 (14:58 +0100)]
don't cound exact luts in big muxes; futile and fragile

5 years agoadd IOBUF
Pepijn de Vos [Mon, 28 Oct 2019 14:33:05 +0000 (15:33 +0100)]
add IOBUF

5 years agoadd tristate buffer and test
Pepijn de Vos [Mon, 28 Oct 2019 14:18:01 +0000 (15:18 +0100)]
add tristate buffer and test

5 years agodo not use wide luts in testcase
Pepijn de Vos [Mon, 28 Oct 2019 13:40:12 +0000 (14:40 +0100)]
do not use wide luts in testcase