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I notice that you're applying arbitrary changes to your code, fixing some bugs and add new at other places, one step forward and two steps back.
Previously you had int_rb enabled without an #int_rb ...

First, get rid of most of your RDA code.
1) You do not need to test if a character is available, if the interrupt occurs, one _is_.
2) Do _not_ write the the EEPROM in the interrupt. The EEPROM writ ...

Your latest code has an #INT_RDA handler, but is missing #INT_RB, which must be expected to cause your application to hang. The #INT_RDA is performing getc(), as required, but it most likely should al ...

So, where are the other handlers?.
You must _never_ enable an interrupt without a handler for that interrupt present. INT_RB, and INT_RDA in particular, _must_ perform the operations to reset the har ...

Thanks Ttelmah for an excellent description. I wish I had tried SAMPLE_EARLY. I'm going to go back and give it a try.
Inside the interrupt on change isr I plan to be doing something this
If ( KBhi ...

No, because the problem will be in one (or more) of the interrupt handlers, which you don't show.

Best Wishes

#include "16f886.h"
#device *=16 ADC=10
#fuses INTRC_IO,NOWDT,NOPROTECT, ...

You are spending too long in one or more of the interrupt handlers.

Remember that things like timer interrupts, INT_RDA, etc., reflect hardware events happening at intervals. You need to always han ...

Thank you VERY MUCH PCM programmer !!!

I had a real problem trying to activate the silicon UART on a PIC16F88.

I started to read here and there and, - BOY - , I was discouraged to see - NOT AGAI ...

Dear All,

I would want to send data to another pic by serial port. My board have several peripheral that listening them. When I want to send data another pic I am able to, however in this case I ca ...

The 24256.c driver should work with the Atmel eeprom.

Can I use hardware i2c on at24c128 ?
#use i2c(MASTER, sda=PIN_C4,scl=PIN_C3, FORCE_HW)

if I used to above code my software is fro ...

Remove the 100K pull-ups. Put in 4.7K pull-ups.

Does your board have an RS-232 connector on it, so you can display
debug information in a terminal window on your PC ?

My board does not have a ...

Are you testing this in real hardware, or is this a Proteus simulation ?

I am testing it real hardware not on proteus. Also I checked my hardware is connected correct pin. Do you think 24256.c driv ...

Try a more simple program, as shown below. Also make sure you have
the correct connections:
Pin C4 on the PIC connects to the SDA pin on the At24c128.

Pin C3 on the PIC connects to the SCL pin o ...

Post your test program, similar to this link:
http://www.ccsinfo.com/forum/viewtopic.php?t=30346&start=10
Do not post the 24256.c driver. Only post your test program.

The test program must b ...

0=ACK.
In C, 0=true
So your function, returns ext_eeprom_notready (since you invert your ACK bit). Then you invert this again, so will wait if the chip _does_ acknowledge.....

Best Wishes

I pr ...