diff --git a/src/disk/hdc_ide.c b/src/disk/hdc_ide.c
index d8bbb9762..6953bda83 100644
--- a/src/disk/hdc_ide.c
+++ b/src/disk/hdc_ide.c
@@ -168,8 +168,8 @@ static uint8_t ide_qua_pnp_rom[] = {
 		0x47, 0x01, 0xee, 0x03, 0xee, 0x03, 0x01, 0x01, /* I/O 0x3EE, decodes 16-bit, 1-byte alignment, 1 address */
 	0x30, /* start dependent functions, acceptable */
 		0x22, 0xb8, 0x1e, /* IRQ 3/4/5/7/9/10/11/12 */
-		0x47, 0x01, 0x68, 0x01, 0x68, 0x01, 0x01, 0x08, /* I/O 0x168, decodes 16-bit, 1-byte alignment, 8 addresses */
-		0x47, 0x01, 0x6e, 0x03, 0x6e, 0x03, 0x01, 0x01, /* I/O 0x36E, decodes 16-bit, 1-byte alignment, 1 address */
+		0x47, 0x01, 0xe8, 0x01, 0xe8, 0x01, 0x01, 0x08, /* I/O 0x1E8, decodes 16-bit, 1-byte alignment, 8 addresses */
+		0x47, 0x01, 0xee, 0x03, 0xee, 0x03, 0x01, 0x01, /* I/O 0x3EE, decodes 16-bit, 1-byte alignment, 1 address */
 	0x30, /* start dependent functions, acceptable */
 		0x22, 0xb8, 0x1e, /* IRQ 3/4/5/7/9/10/11/12 */
 		0x47, 0x01, 0x00, 0x01, 0xf8, 0xff, 0x08, 0x08, /* I/O 0x100-0xFFF8, decodes 16-bit, 8-byte alignment, 8 addresses */