MAMEWorld Forums - News - Re: MAME 0.209

Thanks to all various contributors. A fair amount of very good additions and fixes over past several weeks. The gambling games updates and various Apple II related updates are impressive.

I applaud and appreciate the netlist work and fixes over past few weeks that made it in .209 release.

>A better LM3900 op-amp model means Money Money and Jack Rabbit are no longer missing the
>cassa (bass drum) channel, and mixing between music and speech is improved.

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• Netlist library updates: [Couriersud]
* Added a MOSFET model, inclusion Meyer capacitance.
* Added a charge-conserving capacitor model, as an alternative to the constant-capacity model.
* Started putting constants in a central place.
* Fixed a rounding issue in the ptime code.
* Added a global parameter to disable semiconductor capacitance modelling.
* Added an operational amplifier model that ignores output voltage limits.
* Changed MB3614 operational amplifier parameters to match the data sheet.
* Added VARCLOCK, allowing step size to be calculated using a function.
* Added trunc to pfunction.
* Added opamp_amplification_curve example, which calculates op-amp gain as a function of frequency.
* Improved LM3900 voltage clamping model, and aligned pin names with other operational amplifiers.
* Added a high-precision LM3900 model, and an improved high-performance LM3900 model.
* Added more SPICE elements to the conversion code.
* Fixed current source handling when converting SPICE nets.
* Added validation for netlist devices.
* Improved scalability of error messages.

• m62.cpp: Fixed kidniki netlist, based on corrections in kungfum schematics and an apparent omission. [Couriersud]

• zaccaria.cpp sound improvements: [Couriersud]
* Routed speech and DAC through netlist filtering, and fixed AY8910 interfacing.
* Hooked up potentiometers so they can be adjusted.
* Added frontiers to netlist to improve performance.

• mario: Fixed an error in schematics that became obvious with the improved LM3900 model. [Couriersud, Tafoid]
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btw: Some recent netlist updates (post .209 source cutoff time frame) will likely require a netlist specific compile build for those wanting to stay up to the latest netlist updates that won't appear until next release (.210) next month.