Am Fri, 30 Jun 2006 11:20:03 +0200 schrieb David Brown: >> >> mov.b &0x0034, r15 >> add r15, r15 >> mov r15, &two >> ret > > That would be wrong. PINB is declared volatile - the C code says it should > be read twice, so it should be read twice by the generated assembly. Thus > better code would be:
Thinking 'embedded' seems to be quite different than thinking 'C'. ;-) I agree with that. But your code > mov.b &0x0034, r15 > add.d &0x0034, r15 > mov r15, &two > ret adds a 8 bit number to a 16 bit number where adding to 8 bit numbers is needed. ;-)
