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+README on Implementing Linux for the Logic PD LPD7A40X-10
+- CPLD memory mapping
+ The board designers chose to use high address lines for controlling
+ access to the CPLD registers. It turns out to be a big waste
+ because we're using an MMU and must map IO space into virtual
+ memory. The result is that we have to make a mapping for every
+ register.
+- Serial Console
+ It may be OK not to use the serial console option if the user passes
+ the console device name to the kernel. This deserves some exploration.