From 7a11f284d7d2a562e25232cc947c2fed96401cd4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20G=C3=A1lvez?= <dgalvez75@gmail.com>
Date: Fri, 14 Dec 2018 11:34:03 +0100
Subject: [PATCH] Clear IDE fields in ACP_CONFIG register

Don't trust that the IDE fields in ACP_CONFIG are set
to zero when the FPGA is loaded.
---
 sys/ide.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/ide.c b/sys/ide.c
index 6664018..abead7f 100644
--- a/sys/ide.c
+++ b/sys/ide.c
@@ -151,6 +151,8 @@ void set_ide_access_mode(void)
     wait_ms(10);
 
     /* CF 0xFFF00000, IDE 0xFFF00040, IDE INT ON, SCSI INT OFF, SPEED SLOW */
+    ACP_CONFIG_REG &= (!ACP_CONFIG_REG_CF_ADDR & !ACP_CONFIG_REG_IDE_ADDR);
+    wait_ms(10);
     ACP_CONFIG_REG |= (ACP_CONFIG_REG_IDE_INT | ACP_CONFIG_REG_SPEED_U1 | ACP_CONFIG_REG_SPEED_U0);
     wait_ms(10);