Combinaton Gate access

[mister_e]

@ Joe,

in your previous example, you should move your ISR or jump over

Init:    
    lcdout $FE,1
    LCDOUT 254,128,"AUTHORIZATION"
    LCDOUT 254,192,"REQUIRED TO OPEN"
    LCDOUT 254,153,"THIS GATE"
    LCDOUT 254,212,"KEY ENTRY CODE"

    '    ----> goto start:
 disable
KeypadINT:    
@ READKEYPAD _ByteA
    TRISB=%11110000
    PORTB=0
    INTCON.0=0
    resume
enable   
Start:

What happen here is that it meet a RESUME, which do something close to a RETURN. Having nothing is the stack, it jump somewhere you don't know and execute the code at the top again and again... and again...

[mister_e]

Leonardo, sorry i don't have Proteus, will be faster if you tell me wich PIC and how your keypad is attach to it.

[Archangel]

@ Joe,

in your previous example, you should move your ISR or jump over
[code]

Dough! . . . thanks Steve that does make sense. This project has been hugely successful, not only do I have working code now but more importantly I have learned enough to keep me busy understanding what I learned for weeks!
THANKS GUYS !

[mister_e]

sweet!

Pump up the volume...
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