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try

if (INPUT(PIN_B0) == 0)
{
.....
....
}

in 24256.c pins are

#ifndef EEPROM_SDA

#define EEPROM_SDA PIN_B1
#define EEPROM_SCL PIN_B0

#endif

you have to change it...

And in your circuit A0, A1, A2 of 24256 must be grounded. ...

I use DS1307 and 24LC32 on the same bus and it works fine.
Here is my circuit

http://img140.imageshack.us/img140/2381/ds13072432jc4.th.jpg

#if defined(__PCM__)
#include <16F877> ...

Proteus simulates a 24C32A or a 24LC32A just fine.

Could you please post an example?

Maybe my version has some problems.
I am using 6.9 sp4...

I builded the circuit. It works fine Smile

.
(I think that proteus can't simulate 24c32.)

OK Ttelmah thank you for your warning. I changed Vcc and Vdd lines according eeprom and pic pins. But it is still the same result. Now I think that it is a simulation problem. I will build the circuit ...

Hi, I want to simulate 24C32 I2C EEPROM with Proteus, unfortunately it doesnt work :( . I write 12 to 5. address and when I read the 5. address it is allways 255.
Where is the mistake ? In my code o ...

Thank you for your replies mvaraujo , Ttelmah.

I am changing the code . In every interrupt routine it will only sample 1 channel, and 1 sample for 20 us is enough for me. But there is a point that ...

I am trying to make 8 channel ADC with USB support.
in every 100 us with timer0 interrupt program starts channel 1 conversion and send the value USB chip after channel 2 conversion starts etc..
The ...

I have used USBMOD2 from

#bit RXF = 7.2 // PORTC 2
#bit TXE = 7.1//PORTC 1
#bit WR = 7.0// PORTC 0
#bit RD = 8.3//PORTD 3
#byte B = 6 //PORT B

void main() {
byte k;
...