Hi, :(

        I don't believe what's happening with a program that i try to execute a
program in 2
external EEPROM connected in a PIC17C756 (MICROPROCESSOR MODE)

        The first works well! I wrote 0 and 1 on PORTB, i measure in osciloscope
 a square wave!


                    00425
                    00426
                    00427         LIST P=17C756
                    00428
;--------------------------------------------------------------------------
                    00429 ; Program Code
                    00430
;--------------------------------------------------------------------------
                    00431
;--------------------------------------------------------------------------
                    00432 ;   Set the reset vector here.  If you are using a PIC
16C5X device,
use:
                    00433 ;               ORG     <last program memory locati
on>
                    00434 ;   Otherwise, use:
                    00435 ;               ORG     0
                    00436
;--------------------------------------------------------------------------
                    00437
0000                00438                 ORG     0
0000 C001           00439                 GOTO    Start
                    00440
0001                00441 Start
0001 B800           00442                  MOVLB  BANK0 ;select bank1
0002 B000           00443                  MOVLW  0x00
0003 0111           00444                  MOVWF  DDRB  ; portb as output
                    00445
0004                00446 Loop
                    00447
0004 B000           00448                 MOVLW  0x00
0005 0112           00449                 MOVWF  PORTB ; Flip-Flop
0006 B0FF           00450                 MOVLW  0xFF
0007 0112           00451                 MOVWF  PORTB ; Flip-Flop
0008 C004           00452                 goto Loop    ; stay in LOOP
                    00453
                    00454
                    00455                 END

But, when i do a small change on Software, nothing happens, the osciloscope show
s anything!


                    00437
0000                00438                 ORG     0
0000 C001           00439                 GOTO    Start
                    00440
0001                00441 Start
0001 B800           00442                  MOVLB  BANK0 ;select bank1
0002 B000           00443                  MOVLW  0x00
0003 0111           00444                  MOVWF  DDRB  ; portb as output
                    00445
0004                00446 Loop
0004 B706           00447                  lcall Sub     ; call a FLIP-FLOP subr
outine
0005 C004           00448                  goto Loop    ; stay in LOOP
0006                00449 Sub
                    00450
0006 B000           00451                 MOVLW  0x00
0007 0112           00452                 MOVWF  PORTB ; Flip-Flop
0008 B0FF           00453                 MOVLW  0xFF
0009 0112           00454                 MOVWF  PORTB ; Flip-Flop
000A 0002           00455                 RETURN
                    00456
                    00457                 END

What am i doing wrong? Wait for other BIG question! (Now in MPLAB17-C)

My mpab is 01.50, but i think that's not the problem! (BUG)

Miguel Wisintainer