cannot find the reason for such a strange behavior

[richard]

The work around was

DmyFlg = Door_Lock
DmyFlg = !DmyFlg
Report[2] = DmyFlg + 48

I'M not sure you solution is correct

I did a few experiments as follows and conclude that,

if you invert a bit var (or bit alias) wether logical or bitwise only bit 0 in the result is valid , I you go on to use the result mathematically then all the other bits need to be masked off

for a correct calculation



D_Lck !D_Lck ~D_Lck D_Flg !D_Flg ~D_Flg R+!L R+~L R+!F R+~F
WRONG
0 65535 65535 0 65535 65535 47 47 47 47
CORRECT
0 255 65535 0 65535 65535 49 49 49 49
WRONG
1 65280 65534 1 65280 65534 48 46 48 46
CORRECT
1 0 65534 1 65280 65534 48 48 48 48
WRONG
0 65535 65535 0 65535 65535 47 47 47 47
CORRECT
0 255 65535 0 65535 65535 49 49 49 49

   TRISC = %11101111        ' set PORTC I/O
 

 D_Lck var Portc.4
 D_Flg var bit
 Report var byte[4]
 
 
    DEFINE DEBUG_REG PORTA
    DEFINE DEBUG_BIT 0      ;  if not used for pwr  
    DEFINE DEBUG_BAUD 9600
    DEFINE DEBUG_MODE 0     
    pause 2000
    Debug "Start",13 ,10      
 
 Debug 13 ,10 ,"D_Lck",9 ,"!D_Lck",9, "~D_Lck",9, "D_Flg",9, "!D_Flg",9, "~D_Flg" ,9, "R+!L" ,9, "R+~L" ,9, "R+!F" ,9, "R+~F"
main:
 PORTC.4=!PORTC.4
 D_Flg=D_Lck 
 Debug 13 ,10 ,"WRONG"
 Report[0] = !D_Lck + 48 
 Report[1] = ~D_Lck + 48 
 Report[2] = !D_Flg + 48 
 Report[3] = ~D_Flg + 48 
 Debug 13 ,10 ,#D_Lck,9 , #!D_Lck,9, #~D_Lck ,9, #  D_Flg ,9,  #!D_Flg, 9,# ~ D_Flg ,9,# Report[0] ,9,# Report[1] ,9,# Report[2] ,9,# Report[3]
 Debug 13 ,10 ,"CORRECT"
 Report[0] = (!D_Lck&1) + 48 
 Report[1] = (~D_Lck&1) + 48 
 Report[2] = (!D_Flg&1) + 48 
 Report[3] = (~D_Flg&1) + 48 
 Debug 13 ,10 ,#D_Lck,9 , #!D_Lck,9, #~D_Lck ,9, #  D_Flg ,9,  #!D_Flg, 9,# ~ D_Flg ,9,# Report[0] ,9,# Report[1] ,9,# Report[2] ,9,# Report[3]
  
 
 
 
  pause 1000
 
  goto main