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−FC Tourmaline firmware differs from Magnetite in two principal ways when it
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−comes to Mot C139 target support:
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−
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−* C139 LCD support is implemented in a more forward-looking manner: instead of
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−  emulating TI's C-Sample at the lowest R2D driver level and therefore being
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−  forever limited to 84x48 pixel display size, Tourmaline implements a new
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−  96x64 pixel framebuffer, matching the native LCD size of C1xx phones.  The UI
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−  configuration is still black&white only though - the Mother of FreeCalypso
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−  has no current plans to support color UI on smaller LCD sizes than TI's
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−  original 176x220 pix.
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−
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−* Our aftermarket FFS configuration has been changed from 64x3 at 0x3C0000 to
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−  64x7 at 0x300000.  Our earlier 64x3 config was chosen back in 2015, at that
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−  time we didn't know how much room we would end up needing for the firmware
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−  image vs. how much FFS content we would eventually have, and this 64x3 config
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−  is now deemed to be too small, allowing only one 64 KiB sector for FFS
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−  content.  Our new FC Tourmaline aftermarket FFS config supports up to 320 KiB
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−  of FFS content, matches what we use on other platforms with 4 MiB flash chips,
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−  leaves 3 MiB for the firmware image (our current smallbw UI fw is only 2 MiB),
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−  and still avoids intersection with Motorola's (or rather Compal's) original
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−  FFS, which is important for avoiding problems in converting C139 phones back
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−  and forth between Motorola and FreeCalypso firmwares.