Serial.println with unsigne long

hi all!

i rading 3 bytes eeprom. time vale (in seconds). want print out.
my code follow:

code: [select]

   high_byte=eeprom1024.read(adress++);
   mid_byte=eeprom1024.read(adress++);
   low_byte=eeprom1024.read(adress++);
   result=(high_byte << 16) | (mid_byte << 8) | low_byte;
   serial.print((unsigned long)result);
the 3 bytes declared bytes, result declared (unsigne long).
for 3 bytes:0 7f f9 32761, ok.
but for: 0 80 17 getting 4294934551.

has idea, what's wrong? expecting 32762 .

regards
hans

the significan byte of 80 expanded left sign bit.

4294934551 = ffff8017 = 1111 1111 1111 1111 1000 0000 0001 0111

can post declarations used vars involved ?

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