From 245e27c893f73f48fbf5efb136b5e645957f91a6 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Mon, 8 Jul 2019 16:45:15 -0400
Subject: [PATCH] Solidifies belief that the shift register bit is cleared on
 read/write.

---
 Components/6522/Implementation/6522Implementation.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Components/6522/Implementation/6522Implementation.hpp b/Components/6522/Implementation/6522Implementation.hpp
index b6de5fab4..296d83e87 100644
--- a/Components/6522/Implementation/6522Implementation.hpp
+++ b/Components/6522/Implementation/6522Implementation.hpp
@@ -92,6 +92,7 @@ template <typename T> void MOS6522<T>::set_register(int address, uint8_t value)
 			registers_.shift = value;
 			shift_bits_remaining_ = 8;
 			registers_.interrupt_flags &= ~InterruptFlag::ShiftRegister;
+			reevaluate_interrupts();
 		break;
 
 		// Control
@@ -189,6 +190,8 @@ template <typename T> uint8_t MOS6522<T>::get_register(int address) {
 
 		case 0xa:
 			shift_bits_remaining_ = 8;
+			registers_.interrupt_flags &= ~InterruptFlag::ShiftRegister;
+			reevaluate_interrupts();
 		return registers_.shift;
 
 		case 0xb:	return registers_.auxiliary_control;