#IFNDEF __C64_SCR
#DEFINE __C64_SCR = 1
GOTO lib_c64scr_skip

LABEL lib_c64scr_blank
ASM
  lda $d011
  and #($ff-$10)
  sta $d011
ENDASM

SUBEND

LABEL lib_c64scr_show
ASM
  lda $d011
  ora #$10
  sta $d011
ENDASM
SUBEND

LABEL lib_c64scr_skip

#IFEND