LM3900 model 3 only has half the number of BJTs compared to model 1
but delivers comparable results for Money Money.
Model 3 follows the datasheet.
I left code for Model 0 and 2 in for educational reasons.
improvements.
- fix MB3614 parameter
- Added VARCLOCK which derives step size from function
- optimized function handling in CS and VS
- fixed a bug in ppreprocessor
- add trunc to pfunction
- added opamp_amplification_curve to derive characteristic
amplification curve
- Untie diode code
- Fix some typos
- add TYPE=2 opamp model which omits output voltage limitation
Useful for determining causes of non-convergence
- Fix MB3614 opamp parameters to match datasheet
modelling. [Couriersud]
Added global NETLIST.DEFAULT_MOS_CAPMODEL parameter. Setting this to
zero disables using capitance modelling in mos models.
On a per mos device basis this can be achieved by adding CAPMODEL=0 to
the model definition, e.g. MOSFET(X, "NMOS(CAPMODEL=0)")
Improve MOSFET convergence by using log-stepping.
This fixes a rounding issue in the ptime code. This bug surfaced when I
tested netlist with picosecond resolution in ptime.
This will have a small impact on every driver using netlist. For
breakout, it required to adjust the color overlay.
This is a significant improvement to the MOS transistor model. It adds
modelling of the Meyer capacitance model.
This is a somewhat academic addition since the effects occur on a
nanosecond time scale and have a huge impact on performance. I plan to
make the capacitance model selectable. Both on a model level as well as
by introducing a global solver parameter.
The model delivers comparable results to LTSpice.
This effectively reverts b380514764 and
c24473ddff, restoring the state at
598cd52272.
Before pushing, please check that what you're about to push is sane.
Check your local commit log and ensure there isn't anything out-of-place
before pushing to mainline. When things like this happen, it wastes
everyone's time. I really don't need this in a week when real work™ is
busting my balls and I'm behind where I want to be with preparing for
MAME release.
- added MOSFET model. Currently capacitances are not modelled.
This is a 3-pin model (Bulk connected to Source) with provisions to
extend it to 4-pin at a later stage.
- Add a capacitor generic model which is charge conserving.
Switch netlist to use this model instead of constant capacity model.
- Start putting constants into a central place.
Please expect minor timing differences due to a different numerical
path.
The cmos inverter example illustrates the analog implementation of a
cmos inverter gate. These were used a lot back in the 70s/80s to
generate sinus waves. The model should also be able to better emulate
4066 analog switches.
The addition of a relatively simple capacitor model is planned at a
later stage.
Expect everything from the MOSFET model at the current stage. Wrong
results as well as convergence issues and crashes.
Despite the overhead - two devices more per transistor - this addition
significantly reduces computing time on switching conditions by reducing
the needed Newton-Raphson loops dramatically.
- Fixed crashes on terminals without nets (i.e. connected to a rail)
- Reviewed "FIXMEs" and corrected some minor ones.
- Made m_cur_analog protected.
- Fixed pmf delegates to work with msvc.
- More optimizations to the solver code.
- Started work on a better signal pipeline in nlwav
- Only generate documentation for entities which are documented.
[Couriersud]
- Fixed OPENMP compile
For congo bongo, using Solver.PARALLEL=1 significantly increases
performance from 270% to 380%. However, this has to be taken
with a grain of salt. Enabling this on predominantly logic netlists
can severly kill performance.
- Increased readability of timed queue code.
Create congo bongo sounds with
./nltool -c run -t 10 -i nl_examples/congo_bongo.csv -f
nl_examples/congo_bongo.c -l RO.1
and convert to wav with
./nlwav -i log_RO.1.log -o t.wav
Sounds played are:
GORILLA, BASS_DRUM,CONGA_H, CONGA_L, RIM0 and again GORILLA.
- nltool now accepts -Ddefine=value to pass on to netlists
- improved option handling and added "dummy" options to add grouping and
examples in help output.
- improved --cmd=listdevices output
- Fix dynamic timestepping. This will work with breakout using real
capacitor modelling instead of delay devices. Really slow, but very
useful to calibrate timings.
- Fix an awful bug in timing for delay devices.
- Switched to clang 3.8 and made code compile with
-Weverything -Werror -Wno-old-style-cast -Wno-padded -Wno-weak-vtables
-Wno-missing-variable-declarations -Wno-conversion -Wno-c++98-compat
-Wno-float-equal -Wno-cast-align -Wno-global-constructors
-Wno-c++98-compat-pedantic -Wno-exit-time-destructors
-Wno-format-nonliteral -Wno-weak-template-vtables
This was a helpful exercise since it brought forward some
serious issues with implicit constructors.
[Couriersud]
- Dead code removal and minor refactoring.
- Simplify. Align naming with stl. Fix somed pedantic warnings.
- More STL compatability.
- Remove ATTR_HOT and ATTR_COLD. Refactored netlist_time.
- Fix long standing workaround which would ignore policy of change-only"
propagation.
- Rewrote for loops to use auto : semantics.
- Truthtable cleanup. (nw)
- Get rid of nl_math. Remove nl_util.h and moved contents to
plib/putil.h.
- Fix standalone build. Refactor ptypes.h.
[Couriersud]
- added a new solver using compressed row format
- fixed sorting
As a result, netlist performance on kidniki nearly doubled. The
performance increase is mainly due to the fact that sorting decreases
the number of operations for gaussian elimination of the kidniki matrix
from ~7800 to 707. In addition, compressed row format improves L1 usage.
[Couriersud]
- rename netlist_analog_t to analog_t
- straighten object model
- reduce access to member variables
- use pvector<analog_net_t::list_t> for groups.
- simple coverity fixes.
- First steps to move towards c++11.
- Base plist on std::vector
- Replace pstack with std::stack
- Remove pnamed_list
- use c++ "for each" in a number of places
- Fixed two "time bombs"
[couriersud]
easily extensible to utf16 and utf32 as well. All position related
operations now operate on char code positions instead of byte positions.
[Couriersud]
This file is a standard csv file specifing times and values of parameter
modifications for specified devices. This file triggers the various
sound inputs using a 10ms impulse.
Use
./nltool -f nl_examples/congo_bongo.c -t 8 -l RO.1 -i
nl_examples/congo_bongo.csv
to create a netlist log file of the congo bongo mixer stage.
Use
./nlwav -i netlist.log_RO.1.log -o tt.wav -a 17000
to create a wav file tt.wav from the log file using an amplification
factor of 17000.
[Couriersud]
