From e41144d8758b77452a97f073612456d40c50a1a0 Mon Sep 17 00:00:00 2001
From: calc84maniac <calc84maniac@gmail.com>
Date: Wed, 29 May 2024 17:11:49 -0400
Subject: [PATCH] Fix flash cache misses by setting the new cache line as
 most-recently-used

---
 core/flash.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/flash.c b/core/flash.c
index 55682a24e..f7692df95 100644
--- a/core/flash.c
+++ b/core/flash.c
@@ -75,7 +75,8 @@ uint32_t flash_touch_cache(uint32_t addr) {
             return 3;
         } else {
             /* Handle a cache miss by replacing least-recently-used */
-            set->lru = tag;
+            set->lru = set->mru;
+            set->mru = tag;
             cpu.flashCacheMisses++;
             /* Supposedly this takes from 195-201 cycles, but typically seems to be 196-197 */
             cpu.flashDelayCycles += 195;