PSX: Persistent noreset.txt state until core is reset or reloaded. (#1046)

Co-authored-by: Bemjo <Bemjo@users.noreply.github.com>

menu.cpp

@@ -2349,6 +2349,7 @@ void HandleUI(void)
 									if (is_pce() && !bit) pcecd_reset();
 									if (is_saturn() && !bit) saturn_reset();
 									if (is_n64() && !bit) n64_reset();
+									if (is_psx() && !bit) psx_reset();
 
 									user_io_status_set(opt, 1, ex);
 									user_io_status_set(opt, 0, ex);

support/psx/psx.cpp

@@ -18,6 +18,7 @@
 static char buf[1024];
 static uint8_t *chd_hunkbuf = NULL;
 static int chd_hunknum;
+static int noreset = 0;
 
 static int sgets(char *out, int sz, char **in)
 {
@@ -710,12 +711,12 @@ void psx_mount_cd(int f_index, int s_index, const char *filename)
 
 				if (!same_game)
 				{
-					reset = 1;
-					if (old_len)
+					if (!noreset && old_len)
 					{
 						strcat(last_dir, "/noreset.txt");
-						reset = !FileExists(last_dir);
+						noreset = FileExists(last_dir);
 					}
+					reset = !noreset;
 
 					strcpy(last_dir, filename);
 					char *p = strrchr(last_dir, '/');
@@ -798,3 +799,8 @@ void psx_poll()
 {
 	spi_uio_cmd(UIO_CD_GET);
 }
+
+void psx_reset()
+{
+	noreset = 0;
+}

support/psx/psx.h

@@ -7,5 +7,6 @@ void psx_read_cd(uint8_t *buffer, int lba, int cnt);
 int psx_chd_hunksize();
 const char* psx_get_game_id();
 void psx_poll();
+void psx_reset();
 
 #endif