sound board, completing the tromba circuit
(nw) I'm not sure whether the model works properly or not, but in the
circuit where it's used, I don't think it can work properly with the
current TTL output model. A capacitor is charged by the Q output of a
74LS74 flipflop (U3A) until the voltage passes the Schmitt trigger's
threshold, causing it to reset the flipflop. However, the positive
trigger voltage of the Schmitt trigger is 1.6V, but our TTL output model
has a high output voltage of 1.0V (see nl_base.cpp:89). I realise the
simplified model of TTL logic with high impedance inputs and outputs
behaving as though thery're loaded is convenient and fast to simulate,
but it's not detailed enough for applications like this where
7400-series chips are used in analog circuitry. This is what held me up
last time I tried adding a netlist for this sound board.
- OPENMP refactored. All OPENMP operations are now templatized in pomp.h
- We don't need thread-safe priority queue. Event code updating analog
outputs now runs outside the parallel code.
(nw)
0: Parallel processing of solvers disabled
1: One processor parallel processing. Can be used to measure OPENMP
overhead
>1: Solve n analog subnets in parallel.
Previously, all available processors were used which caused performance
to degrade on hyperthreading.
[Couriersud]
* Tromba (trumpet) sound is not working - requires Schmitt trigger device
* Connecting cassa (bass drum) swamps other instruments so it's disconnected for now
* Mixing melody sound with speech/SFX is not done in netlist (should be)
* Relative levels of melody/speech/SFX are probably still wrong
(nw) A good test case for this is the Money Money driver (monymony).
There's a bit of buzzing on this one as well. The problem with the
cassa could be caused by running into non-ideal characteristics of opams
again (the LM3900 seems to ignore the V+ value supplied to it). When
the netlist library gets Schmitt trigger support, the tromba can be
completed. Unfortunately, the tromba is a key part of the
characteristic sound of these boards, so you really notice when it's
lacking.
(nw) It doesn't work quite right yet. The "Hammer" and "Pest" sounds
are generated by free-running 555/556 timers and gated with LM324
applifiers. For whatever reason, the netlist system produces a kind of
buzzing from the "Hammer" circuit when it's supposed to be suppressed,
and it doesn't think the pest sound should be suppressed completely so
you can always hear it at a low level in the background. The "Cheese"
circuit is a bit weird - either they're using the base-emitter junction
of a 2SC945 as a signal diode, or there's an error in the schematic
(collector is shown unconnected). Connecting this part of the circuit
causes the netlist system to hang, so R2/R3/C8/Q2 are not connected for
now.
The core changes are:
* Short name, full name and source file are no longer members of device_t, they are part of the device type
* MACHINE_COFIG_START no longer needs a driver class
* MACHINE_CONFIG_DERIVED_CLASS is no longer necessary
* Specify the state class you want in the GAME/COMP/CONS line
* The compiler will work out the base class where the driver init member is declared
* There is one static device type object per driver rather than one per machine configuration
Use DECLARE_DEVICE_TYPE or DECLARE_DEVICE_TYPE_NS to declare device type.
* DECLARE_DEVICE_TYPE forward-declares teh device type and class, and declares extern object finders.
* DECLARE_DEVICE_TYPE_NS is for devices classes in namespaces - it doesn't forward-declare the device type.
Use DEFINE_DEVICE_TYPE or DEFINE_DEVICE_TYPE_NS to define device types.
* These macros declare storage for the static data, and instantiate the device type and device finder templates.
The rest of the changes are mostly just moving stuff out of headers that shouldn't be there, renaming stuff for consistency, and scoping stuff down where appropriate.
Things I've actually messed with substantially:
* More descriptive names for a lot of devices
* Untangled the fantasy sound from the driver state, which necessitates breaking up sound/flip writes
* Changed DECO BSMT2000 ready callback into a device delegate
* Untangled Microprose 3D noise from driver state
* Used object finders for CoCo multipak, KC85 D002, and Irem sound subdevices
* Started to get TI-99 stuff out of the TI-990 directory and arrange bus devices properly
* Started to break out common parts of Samsung ARM SoC devices
* Turned some of FM, SID, SCSP DSP, EPIC12 and Voodoo cores into something resmbling C++
* Tried to make Z180 table allocation/setup a bit safer
* Converted generic keyboard/terminal to not use WRITE8 - space/offset aren't relevant
* Dynamically allocate generic terminal buffer so derived devices (e.g. teleprinter) can specify size
* Imporved encapsulation of Z80DART channels
* Refactored the SPC7110 bit table generator loop to make it more readable
* Added wrappers for SNES PPU operations so members can be made protected
* Factored out some boilerplate for YM chips with PSG
* toaplan2 gfx
* stic/intv resolution
* Video System video
* Out Run/Y-board sprite alignment
* GIC video hookup
* Amstrad CPC ROM box members
* IQ151 ROM cart region
* MSX cart IRQ callback resolution time
* SMS passthrough control devices starting subslots
I've smoke-tested several drivers, but I've probably missed something. Things I've missed will likely blow up spectacularly with failure to bind errors and the like. Let me know if there's more subtle breakage (could have happened in FM or Voodoo).
And can everyone please, please try to keep stuff clean. In particular, please stop polluting the global namespace. Keep things out of headers that don't need to be there, and use things that can be scoped down rather than macros.
It feels like an uphill battle trying to get this stuff under control while more of it's added.
- more use of c++ features
- some CRTP in pfmtlog
- demangled code for truthtables
- use more constexpr
- rewrite main loop
- use default constructors and assignment operators were applicable.
- optimized 7448 and 9316
All of this has decreased startup time by approx. 25% to 30%. Complex
netlists like pong or kidniki are parsed, analyzed and constructed in
around 15 ms. Run performance has increased by about 5%.
All in all not to bad. A game like pong uses a clock of 7 MHz (after
division by 2). Thats 14 MHz clock invocations. Running at over 200%, 28
MHz. On a 3.9 GHz Machine about 140 cycles/clock change.
[Couriersud]
pstring:
- added support for UTF16LE to pstring.
- renamed size() to mem_t_size()
- renmaed len() to length()
- added size() == length()
- added empty()
- added simple compare()
pfmtlog:
- Simplified pfmtlog, added more c++
pdynlib:
- add a dynproc type to dynlib to wrap dynamic library calls.
various:
- fix two coverty scan issue.
- various clang warnings fixed.
(nw)
This removes all allocation code from pstring. const_iterator is
consequently now based on pstring::const_iterator.
Removed pstring_buffer. This was class wasn't a good idea.
Vas was right: This change did not impact runtime performance. Startup
performance (string intensive) increased. (nw)
There are a few changes to achieve this:
* Rename to const_iterator since it's immutable
* Typedef iterator to const_iterator for now as there's no mutable iterator
* Add default constrcutor and operator-> required by concept, const-qualify operators
* Remove operator+ and operator+= since it's not a random-access iterator (use std::next and std::advance instead)
* Return reference/pointer to a proxy rather than a code_t value from opertator*/operator->
The final change is required to meet the requirement that operator* for
two equivalent forward iterators return an equivalent reference. The
pstring doesn't actually contain a sequence of code_t, so there's no way
to return a reference to code_t directly. Instead, a reference to a
proxy object aliased on the string storage is returned. The proxy is
implicitly convertible to code_t. The most noticeable side effect is
that auto c = *s.begin() or for (auto c : s) won't work. You need to do
for (auto &c : s) or for (code_t c : s) instead.
Fixed -Winconsistent-missing-destructor-override warnings. Made
some constructors of template classes and classes with virtual .. = 0
methods protected. Fixed src/lib/netlist/build/makefile (nw)
Small improvement for 7493.
Convert 9316 from subdevice to delegate.
Convert 74107 from subdevice style to delegate.
Also refactored inconsistencies in other parts of the code. (nw)
