Currently I use the Sanguino mapping for 644/1284 in my fast I/O libraries.
Which schematics? There are three of them: mine on the PCB (A0=D31), standard (A7=D31) and avr-developers Sanguino (A0=D31)..The order of pins in avr-developers maps mines, but the definitions (ie static const uint8_t A0 = 24;) does not, therefore I think there is an issue with those defs..
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