Simple LCD code not working..

[mister_e]

In theory it has to work, you may have one of those LCD timing problem OR LVP mode set to on. try

for 16F877a

@   __CONFIG _XT_OSC & _LVP_OFF
define OSC 4

' Define LCD registers and bits
DEFINE  LCD_DREG        PORTB            
DEFINE  LCD_DBIT        4                    
DEFINE  LCD_RSREG       PORTB            
DEFINE  LCD_RSBIT       2                
DEFINE  LCD_EREG        PORTB            
DEFINE  LCD_EBIT        3
DEFINE LCD_COMMANDUS 2000   'Command delay time in us 
DEFINE LCD_DATAUS 50        'Data delay time in us

Play with the contrast pot, make sure the R/W pin is tied to low. Not better, you may need to play with COMMANDUS and DATAUS values.

For the 16F88 you may need to disable some Analog feature.


HTH