Hello Everybody,
Ive been experimenting with adding different values into NESMAS and i came across something wierd. Instead of starting with value #$00 at the $2005 store i added values like #$20, #$40, #$80, #$99.
Values like #$20, #$40, #$80 made the text scroll on a different row (vertically). While #$99 made the screen flicker but i think that has to do with vblank or sumpthing. Why does this happen? I would have thought that entering these values would start the scroll futher on down the line. Am i embarking on a journey into the magical world of vertical scrolling. Any tips on veritcal scrolling? Or any tips on how to make it got the from left to right?
Ive been experimenting with adding different values into NESMAS and i came across something wierd. Instead of starting with value #$00 at the $2005 store i added values like #$20, #$40, #$80, #$99.
Code:
lda hscroll
sta $2005
lda #$30
sta $2005
sta $2005
lda #$30
sta $2005
Values like #$20, #$40, #$80 made the text scroll on a different row (vertically). While #$99 made the screen flicker but i think that has to do with vblank or sumpthing. Why does this happen? I would have thought that entering these values would start the scroll futher on down the line. Am i embarking on a journey into the magical world of vertical scrolling. Any tips on veritcal scrolling? Or any tips on how to make it got the from left to right?