I need some help here.

Can anyone see a reason why the program might go off into
never-neverland during this subroutine? The part is a 17C44.

        org     0x7E4                   ;place routine here to prevent
                                        ;crossing page boundary

ascii_con                               ;value to convert is in wreg
        movwf   offset          ;save wreg
        movlw   HIGH (ascii_con1)       ;
        movwf   PCLATH          ;initialize PC high latch

        movfp   offset,wreg             ;load offset back into wreg
        andlw   0x0F                    ;clear high nibble to prevent overflow
        addlw   LOW (ascii_con1)        ;add desired offset to PC low
        movwf   PCL                     ;jump

ascii_con1
        retlw   0x30                    ;0
        retlw   0x31                    ;1
        retlw   0x32                    ;2
        retlw   0x33                    ;3
        retlw   0x34                    ;4
        retlw   0x35                    ;5
        retlw   0x36                    ;6
        retlw   0x37                    ;7
        retlw   0x38                    ;8
        retlw   0x39                    ;9
        retlw   0x41                    ;a
        retlw   0x42                    ;b
        retlw   0x43                    ;c
        retlw   0x44                    ;d
        retlw   0x45                    ;e
        retlw   0x46                    ;f

We fill all unused program memory spaces with a GOTO
Watchdog_timout statement. Using an emulator, we'll let the
program run and, occasionally, we'll find the program in
that timeout routine (the watchdog is disabled for debug
reasons). The last thing in the stack is the Call ascii_con
statement. Interrupts are disabled during the routine that
calls ascii_con.

I appreciate any help.

Ryan

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