[avr-libc-dev] [task #3693] Add new devices: mega 640-1280-1281-2560-2561

[Marek Michalkiewicz]

Follow-up Comment #5, task #3693 (project avr-libc):

OK, datasheet is wrong, below is the response from Atmel:



1. Only mega256x push 3 bytes on the stack. mega640 and mega128x push 2 bytes
like previous devices.



2. The byte order for mega256x is the same as for other parts.



call:

(SP) <- low byte

(SP-1) <- high byte

(SP-2) <- extended byte



ret:

(SP+1) -> extended byte

(SP+2) -> high byte

(SP+3) -> low byte



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