as was said above - FOV change. i.e. games still works in 640x480 but ratio changed to fit nice on 16:9 LCD screens
it is a bit more complex in case of 3-screen F355 but same principle - they changed view matrix values to make in look good on flat line of 3 screens
you may find cartridge dump in MAME
crack its protection, or decrypt some data or smth else like that
basically same type of task as crack some PC game to play it for free :D
at various points it was Elsemi, Deunan Knute, or me
it's just one of later revisions Naomi 1, you may check some notes there https://github.com/mamedev/mame/blob/140b1ca07adda3edc8b4d0830211f586b97e07cc/src/mame/drivers/naomi.cpp#L86
they was mainly used in games which uses RS232 peripheral devices, like Star Horse or Mushiking series, and number...
it doesn't say that, list at page 4 is about netboot "conversions". the game itself dumped, it's just nobody cared to crack it to boot from DIMM.
this list is way too outdated (~10years I think) and not recommended to use, it also have wrong information in number of places.
only 2 Naomi is not enough, you'll need at least 4 regular Naomi 1/2, plus one more 2x-PCB multi-board main unit, all of them should have comm.boards and should be connected via optical network. each of 4 regular Naomis also should have card reader. only in this case game will work.
yep, you did it right. but it seems something went wrong, perhaps not correct serial comms settings like parity or stop bits count ?
I'd imagine these things might be configured by CRW DIP switches, so even if InitialD games uses exact same device, in theory they may use not the same UART...
Naomi 1 != Naomi 2 in CN8 part, N1 have there custom RS422 serial comms (connected to MIE MCU), while in case of N2 InitialD you have at CN8 standard UART (connected to SH4's SCIF serial port).
that's why Derby Owners Club games uses setup like: Naomi 1 CN8 <-RS422-> 838-13661...
I'd recommend to forget about that. N1 CN8 are Sega's custom RS422-like serial interface, no one knows how the heck it works at hardware level, at software level uses custom protocol to communicate with RS422/RS232 interface board.
RE'ing of these sounds way above your (current) skills, if you...