External EEPROM can't read/write

[coyotegd]

I wrote a very simple program but with the same output result:

5, 57
5, 255

DEFINE	LOADER_USED	1
DEFINE    OSC 20

edata     var	  BYTE

pause 100
i2cwrite portc.4,portc.3,160,5,[57]
pause 10
serout2 portc.6,32,[dec 5,44,32,dec 57,10,13]
i2cread portc.4,portc.3,160,5,[edata]
serout2 portc.6,32,[dec 5,44,32,dec edata,10,13]
end

I tried using portc.0 as SDA and portc.1 at SCL with the same result. I used a different 16F877. It just doesn't make any sense to me anymore. I've checked the datasheets and my circuit many, many times.