From 4c7e57ebd6a80e805131a979e5b61ece1f87e0da Mon Sep 17 00:00:00 2001
From: Flyinghead <raphael.jean@gmail.com>
Date: Fri, 26 Jan 2024 19:49:01 +0100
Subject: [PATCH] gdrom: revert SPI_TEST_UNIT change

Fixes disk swapping for Alone in the Dark and Resident Evil: Code
Veronica (real BIOS)
Issue #1046
---
 core/hw/gdrom/gdromv3.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/hw/gdrom/gdromv3.cpp b/core/hw/gdrom/gdromv3.cpp
index 86758ee37..a32b4f527 100644
--- a/core/hw/gdrom/gdromv3.cpp
+++ b/core/hw/gdrom/gdromv3.cpp
@@ -665,7 +665,8 @@ static void gd_process_spi_cmd()
 	{
 	case SPI_TEST_UNIT:
 		printf_spicmd("SPI_TEST_UNIT");
-		// This device does not report the check condition status.
+		// needed by Alone in the Dark and Resident Evil: Code Veronica disk swapping
+		GDStatus.CHECK = SecNumber.Status == GD_BUSY;
 		gd_set_state(gds_procpacketdone);
 		break;