64-bit clean, big-endian clean and uses (read|write)[bwl] are basically
the three things some drivers don't get.
> Driving e.g. IDE, serial ports, LEDs will likely need full-
> custom interface chip drivers.
serial ports, RTC aso are implemented on the SH4 chip itself iirc.
> If the SH4 does not have a MMU, then things may get a bit more
It does (The SH3 and SH3e do too). What might be more of a problem for
the sh3 port is that chip does not have an FPU.
Philipp Rumpf
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