Utility routines: SwitchToCharSet

       Name: SwitchToCharSet                                         [Show more]
       Type: Subroutine
   Category: Utility routines
    Summary: Switch the MOS character definitions into memory at &C000 on a BBC
             Master
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * DOENTRY calls SwitchToCharSet


                        \ --- Mod: Code added for Elite-A: -------------------->

IF _BUG_FIX

.SwitchToCharSet

                        \ This routine switches the MOS character definitions
                        \ into memory at &C000 on a BBC Master

 LDA #0                 \ Call OSBYTE with A = 0 and X = 1 to fetch bit 0 of the
 LDX #1                 \ operating system version into X
 JSR OSBYTE

 CPX #3                 \ If X =< 3 then this is not a BBC Master, so jump to
 BCC char1              \ char1 to continue drawing the character

 JSR savews             \ Call savews to put the character set in the correct
                        \ place

.char1

 RTS                    \ Return from the subroutine

ENDIF

                        \ --- End of added code ------------------------------->