From 8694ee5ce52e05f1d25ddc0164adeb38996fb9b3 Mon Sep 17 00:00:00 2001
From: Samuel Walker <swalker@piwalker.net>
Date: Fri, 23 May 2025 06:34:06 -0600
Subject: [PATCH] Fixed timing of scx lo fetch

---
 lib/ppu_sm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/ppu_sm.c b/lib/ppu_sm.c
index a7f4e8d..a4ed309 100644
--- a/lib/ppu_sm.c
+++ b/lib/ppu_sm.c
@@ -94,7 +94,6 @@ void ppu_mode_oam() {
     }
 
     if(ppu_get_context()->line_ticks == 1) {
-        ppu_get_context()->pfc.lo_scroll_x = lcd_get_context()->scroll_x & 0b111;
         //read oam on the first tick only...
         ppu_get_context()->line_sprites = 0;
         ppu_get_context()->line_sprite_count = 0;
@@ -105,6 +104,9 @@ void ppu_mode_oam() {
 
 void ppu_mode_xfer() {
     pipeline_process();
+    if(ppu_get_context()->line_ticks == 81) {
+        ppu_get_context()->pfc.lo_scroll_x = lcd_get_context()->scroll_x & 0b111;
+    }
 
     if(ppu_get_context()->pfc.pushed_x >= XRES) {
         pipeline_fifo_reset();