hi,
can any friend help this situation
the program had run well for some years, now this fail even if to blink a single led on a breadboard.
i have tried several chips: 16f 676, 876,,877a, 18f2455, 26k20... all the same bad result?
the programmer is just updated to 5.1 last night
thank for your help

i post a program here (pic18f26k20):
-------------------------------------------------------

INCLUDE "h:\AllDigital.pbp"
ASM
__CONFIG _CONFIG1H, _FOSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
__CONFIG _CONFIG2H, _WDTEN_ON_2H & _WDTPS_512_2H
__CONFIG _CONFIG3H, _CCP2MX_PORTC_3H & _PBADEN_OFF_3H & _LPT1OSC_OFF_3H & _HFOFST_ON_3H & _MCLRE_ON_3H
__CONFIG _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L
ENDASM
OSCCON = $70 Internal oscillator is set to 16MHz $62 ' 8mhz--- '; Primary Clock is selected as system clock.
OSCTUNE = $40 'HFINTOSC selected; PLL enabled; Factory calibrated frequency
define osc 64
ADCON0 = 0
CM1CON0.7 = 0
CM2CON0.7 = 0
portb = 0
latb = 0
trisb = 0
'------------------------------------------

program:
portb = $ff
pause 1000
portb = 0
pause 1000
GOTO program
'==============================================

end