ô > OsbA0Vars 0ô Test reading VDU variables with OSBYTE &A0 : (4ñ "Screen mode: ";¤fx(135,0)256 27ñ "Number of colours: ";¤byte(160,96,0)+1 7:=col%€num%  ã loop%=1 ¸ 3-¨¶((num%+1)/4) Ì+col%=4*¨¶((col%16)+1)+¶((col%€15)+1)-5 Ö í loop% à =col% ê: ô)ݤbyte(A%,X%,Y%)=((º&FFF4)€&FF00)256 þ6ݤfx(A%,X%):ê Y%:Y%=X%256:=((º&FFF4)€&FFFF00)256 ÿ