eliasarcade2005 Posted January 29, 2022 Share Posted January 29, 2022 Hello, i am trying to split the screen with 2 colors (3/4 blue and 1/4 white), and I used the asm command in batari basic, what I am doing wrong? Pls help me. I keep getting 2 moving colors (ignore the color values). main asm lda #$5C LDX #96 START sta WSYNC dex bne START LDX #96 sta COLUBK START1 STA WSYNC dex bne START1 LDA #$A9 STA COLUBK end goto main Quote Link to comment https://forums.atariage.com/topic/330542-splitting-the-screen-into-2-colors/ Share on other sites More sharing options...
+Random Terrain Posted January 29, 2022 Share Posted January 29, 2022 Here's a link if you ever need a split screen side by side: https://www.randomterrain.com/atari-2600-memories-batari-basic-commands.html#ctrlpf Quote Link to comment https://forums.atariage.com/topic/330542-splitting-the-screen-into-2-colors/#findComment-4994636 Share on other sites More sharing options...
+Karl G Posted January 29, 2022 Share Posted January 29, 2022 Batari Basic code runs in a time slice known as overscan, after the visible screen has been drawn, so you can't update portions of the screen in real time like you are attempting. However, the kernel option "background" can do this: https://www.randomterrain.com/atari-2600-memories-batari-basic-commands.html#kernop_background 1 Quote Link to comment https://forums.atariage.com/topic/330542-splitting-the-screen-into-2-colors/#findComment-4994721 Share on other sites More sharing options...
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