From c46007332a3f71b63260bbf6179ed19806db6654 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Thu, 17 May 2018 20:18:34 -0400
Subject: [PATCH] Switches to returning the shift register contents on every
 even read.

---
 Components/DiskII/DiskII.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Components/DiskII/DiskII.cpp b/Components/DiskII/DiskII.cpp
index 76cea2486..8669829fd 100644
--- a/Components/DiskII/DiskII.cpp
+++ b/Components/DiskII/DiskII.cpp
@@ -247,15 +247,19 @@ uint8_t DiskII::trigger_address(int address, uint8_t value) {
 		case 0xa:	select_drive(0);					break;
 		case 0xb:	select_drive(1);					break;
 
-		case 0xc:	return get_shift_register();
+		case 0xc:
+			inputs_ &= ~input_command;
+		break;
 		case 0xd:	set_data_register(value);			break;
 
 		case 0xe:
 			set_mode(Mode::Read);
-			return shift_register_;
+		break;
+//			return shift_register_;
 		case 0xf:	set_mode(Mode::Write);				break;
 	}
-	return 0xff;
+	set_controller_can_sleep();
+	return (address & 1) ? 0xff : shift_register_;
 }
 
 void DiskII::set_activity_observer(Activity::Observer *observer) {