Hi 'hap',
thanks to you and Berger for this new engine!

I had a problem porting back the Premiere to my version 0.220 with 'memory_share_creator'.
I've solved (?) it with a similar method that I've already used for some Saitek engines long time ago:

1) changed
m_nvram(*this, "nvram", 0x10000, ENDIANNESS_BIG),
to
m_nvram(*this, "nvram"),

2) changed
memory_share_creator< u16 > m_nvram;
to
required_device m_nvram;
and
std::unique_ptr< u16[] > m_nvram_data;

3) changed
m_rombank->configure_entries(0, 2, memregion("maincpu")->base(), 0x20000);
m_nvrambank->configure_entries(0, 2, m_nvram, 0x8000);
to
m_rombank->configure_entries(0, 2, memregion("maincpu")->base(), 0x20000);
m_nvram_data = make_unique_clear< u16[] >(0x10000);
save_pointer(NAME(m_nvram_data), 0x10000);
m_nvram->set_base(m_nvram_data.get(), 0x10000);
m_nvrambank->configure_entries(0, 2, m_nvram, 0x8000);

With these changes the compilation is ok and also the Premiere seems to be working correctly, but to be sure that there are no hidden errors or side-effects, I'm better asking for your 'ok'.

I'm not sure about the type 'u16', but I guess it's correct because of BIG endianness?
but I guess it's correct because of BIG endianness?
And also I'm not sure if the values 0x10000 are correct in the 3 lines with 'm_nvram_data'?

Regards,
Franz

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