internal eeprom 16f876

[Einly]

Dear all,

I am trying to write and read from the internal eeprom of pic 16f876 with the following code:

#include <16f876.h>
#fuses hs,nowdt,noprotect,put,brownout,nolvp
#include <lcd.c>
#byte portc=7

void main()
{
char c;
set_tris_c(0);

lcd_init();
write_eeprom(0,'A');
c=read_eeprom(0);
lcd_putc(c);
delay_ms(1000);
}

It works ok. When I changed to write_eeprom(256,'B', I still able to read B on the LCD. However, from what I read, the address is only from 0x255, why I still able to read when I wrote 256, or ever 1000 in the add part?

Thanks in advance:-)
___________________________
This message was ported from CCS's old forum
Original Post ID: 14336

[PCM programmer]

:= write_eeprom(0,'A');
:= c=read_eeprom(0);
:=It works ok. When I changed to write_eeprom(256,'B', I still able to read B on the LCD. However, from what I read, the address is only from 0x255, why I still able to read when I wrote 256, or ever 1000 in the add part?
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The valid address range is from 0x00 to 0xFF. If you try
to use a larger address value, such as 0x100 (256), the
compiler will only use the lower 8 bits. So if you use 0x100,
the compiler converts it to 0x00 when the code is compiled.
___________________________
This message was ported from CCS's old forum
Original Post ID: 14362