From 4adcb46665d198538e245ac4b9ca71611639c20c Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Wed, 28 Dec 2016 19:51:27 -0500
Subject: [PATCH] Fixed FM-mode CRC generation.

---
 Components/1770/1770.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Components/1770/1770.cpp b/Components/1770/1770.cpp
index afca995dd..fa79d846e 100644
--- a/Components/1770/1770.cpp
+++ b/Components/1770/1770.cpp
@@ -177,15 +177,23 @@ void WD1770::process_input_bit(int value, unsigned int cycles_since_index_hole)
 			{
 				case Storage::Encodings::MFM::FMIndexAddressMark:
 					token_type = Token::Index;
+					crc_generator_.reset();
+					crc_generator_.add(Storage::Encodings::MFM::MFMIndexAddressByte);
 				break;
 				case Storage::Encodings::MFM::FMIDAddressMark:
 					token_type = Token::ID;
+					crc_generator_.reset();
+					crc_generator_.add(Storage::Encodings::MFM::MFMIDAddressByte);
 				break;
 				case Storage::Encodings::MFM::FMDataAddressMark:
 					token_type = Token::Data;
+					crc_generator_.reset();
+					crc_generator_.add(Storage::Encodings::MFM::MFMDataAddressByte);
 				break;
 				case Storage::Encodings::MFM::FMDeletedDataAddressMark:
 					token_type = Token::DeletedData;
+					crc_generator_.reset();
+					crc_generator_.add(Storage::Encodings::MFM::MFMDeletedDataAddressByte);
 				break;
 				default:
 				break;