From fe21bdea3bc722d271d0821a7baea8fa548db138 Mon Sep 17 00:00:00 2001
From: hugova <hugova@kth.se>
Date: Sat, 26 Jul 2025 19:55:25 +0200
Subject: [PATCH] fix off by one issue of line_up_inv.s

---
 wip-hugo/routines/line/line_up_inv.s | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wip-hugo/routines/line/line_up_inv.s b/wip-hugo/routines/line/line_up_inv.s
index a99b39b..44719e8 100644
--- a/wip-hugo/routines/line/line_up_inv.s
+++ b/wip-hugo/routines/line/line_up_inv.s
@@ -34,7 +34,7 @@
         STA D + 1
 
         ;; because C flag is wrong value we let dy_2 be 1 to small
-        Sub_16 dy_2, dy_2 +1, #$01,#$00
+        Sub_16 dx_2, dx_2 +1, #$01,#$00
 
 selfmod:
         LDA dx_2