From b5926d18036e9b3afd462a1222daa9f7bd64b742 Mon Sep 17 00:00:00 2001
From: negativeExponent <negativeExponent@users.noreply.github.com>
Date: Sun, 15 Dec 2019 01:54:30 +0800
Subject: [PATCH] Access psx main memory using retro_memory_map

---
 frontend/libretro.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 987f90de..7d6d8d48 100644
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -1052,6 +1052,20 @@ strcasestr(const char *s, const char*find)
 }
 #endif
 
+static void set_retro_memmap(void)
+{
+	struct retro_memory_map retromap = { 0 };
+	struct retro_memory_descriptor mmap =
+	{
+		0, psxM, 0, 0, 0, 0, 0x200000
+	};
+
+	retromap.descriptors = &mmap;
+	retromap.num_descriptors = 1;
+
+    environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &retromap);
+}
+
 bool retro_load_game(const struct retro_game_info *info)
 {
 	size_t i;
@@ -1313,6 +1327,8 @@ bool retro_load_game(const struct retro_game_info *info)
 		}
 	}
 
+	set_retro_memmap();
+
 	return true;
 }
 
-- 
2.39.5