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this is the tastiera funtions:

void TASTIERA()
{
carattere_premuto = ' ';
SET_TASTIERA();
while (spam < 10)
{
INPUT_COLONNE();
spam++;
CLOCK_TASTIERA();
} ...

now the mai init is:

setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_OFF);
//setup_psp(PSP_DISABLED);
setup_spi(FALSE);
setup_wdt(WDT_OFF);
setup_counters(RTCC_INTERNAL,RTCC_DIV_2 ...

i am very, very, very .... but really very luky ... i have 50 pic18f252 and all run correctly, i use i2c, rs232, lcd display ... an all work perfectly ... ... but my question is not over the crystal . ...

ok ... i have a 40MHz crystal .... so the fouse became?

but ... now the firmware run good ... the serial, the delay etc ... mmmm mmmm mmmm strange!

i use a pic 18f252 and when i use interrupt my pic enter in loop.

my fuses are:

#fuses HS,NOWDT,NOPROTECT,NOLVP

my clock and hardware:

#use delay(clock=40000000)
#use i2c(Master,Fast,sda ...

is possible?

... is there someone whom he knows how to regulate ana analogical tension on a pin? in this way it would be possible to check the contrast of a lcd eliminating the use of the trimmer ...

the adress is standard ....

case 1 : address=0x80;break;
case 2 : address=0xA0;break;
case 3 : address=0xC0;break;
case 4 : address=0xE0;break;

in any case this controller is 100% compa ...

and it is clear ... the init function become:

void lcd_init() {
BYTE i;

set_tris_b(LCD_WRITE);
lcd.rs = 0;
lcd.rw = 0;
lcd.enable = 0;
delay_ms(15);
for(i=1;i&l ...

OK i have resolved ... ... whith the datasheet i have resolved ...

I hope that this can help others that use EA DIP204-4NLED ELECTRONIC ASSEMBLY display as me.

So for solve the proble ...

whit your adress the lcd is like this:
____________________
|44444444444411111111|
|11111111____________|
|33333333333333333333|
|33333333____________|

?

there are someone that have idea?

I have a problem whit a 4x20 LCD Display whit ks0073 controller ...

my init string is: {0x20 | (lcd_type << 2), 0xc,1,6}

my memory map is

line1 0x80
line2 0xc0
line3 0x94
line4 0xd4 ...