parses a hex byte in the given string , at position ` ptr ' . concode_field_sep int frameskip concode_elem_sep boolean updateRam concode_elem_sep BufferedReader in concode_elem_sep ScreenMatrix screen concode_elem_sep int playerBAction concode_elem_sep boolean useRLE concode_elem_sep PrintStream out concode_elem_sep boolean terminateRequested concode_elem_sep boolean updateScreen concode_elem_sep boolean updateRLData concode_elem_sep RLData rlData concode_elem_sep boolean hasObserved concode_elem_sep ConsoleRAM ram concode_field_sep ConsoleRAM getRAM concode_elem_sep boolean wantsTerminate concode_elem_sep void setUpdateRam concode_elem_sep void setUpdateRL concode_elem_sep void readScreenRLE concode_elem_sep void readRLData concode_elem_sep void readRam concode_elem_sep boolean observe concode_elem_sep void readScreenMatrix concode_elem_sep boolean act concode_elem_sep void setFrameSkip concode_elem_sep RLData getRLData concode_elem_sep void setUpdateScreen concode_elem_sep void initPipes concode_elem_sep int getFrameSkip concode_elem_sep void sendAction concode_elem_sep void close concode_elem_sep ScreenMatrix getScreen
int function ( String arg0 , int arg1 ) { int loc0 = arg0 . charAt ( arg1 + 1 ) ; int loc1 = arg0 . charAt ( arg1 ) ; if ( loc0 >= 'A' ) loc0 -= 'A' - 10 ; else loc0 -= '0' ; if ( loc1 >= 'A' ) loc1 -= 'A' - 10 ; else loc1 -= '0' ; return ( loc1 << 4 ) + loc0 ; }