diff --git a/Machines/AtariST/AtariST.cpp b/Machines/AtariST/AtariST.cpp
index d7a9bbd1b..49bbc0fd8 100644
--- a/Machines/AtariST/AtariST.cpp
+++ b/Machines/AtariST/AtariST.cpp
@@ -637,7 +637,7 @@ class ConcreteMachine:
 					GPIP 0: centronics busy
 			*/
 			mfp_->set_port_input(
-				0x00 |	// b7: Monochrome monitor detect (1 = is monochrome).
+				0x80 |	// b7: Monochrome monitor detect (1 = is monochrome).
 				0x40 |	// b6: RS-232 ring indicator.
 				(dma_->get_interrupt_line() ? 0x00 : 0x20) |	// b5: FD/HS interrupt (0 = interrupt requested).
 				((keyboard_acia_->get_interrupt_line() || midi_acia_->get_interrupt_line()) ? 0x00 : 0x10) |	// b4: Keyboard/MIDI interrupt (0 = interrupt requested).
diff --git a/Machines/AtariST/Video.cpp b/Machines/AtariST/Video.cpp
index b93ad648a..bc035aeb3 100644
--- a/Machines/AtariST/Video.cpp
+++ b/Machines/AtariST/Video.cpp
@@ -149,7 +149,7 @@ void Video::run_for(HalfCycles duration) {
 			x = 0;
 			y = (y + 1) % mode_params.lines_per_frame;
 			if(!y)
-				current_address_ = base_address_;
+				current_address_ = base_address_ >> 1;
 		}
 	}
 
diff --git a/Processors/68000/Implementation/68000Implementation.hpp b/Processors/68000/Implementation/68000Implementation.hpp
index b9cb9a01e..dea0e33dc 100644
--- a/Processors/68000/Implementation/68000Implementation.hpp
+++ b/Processors/68000/Implementation/68000Implementation.hpp
@@ -2001,7 +2001,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
 							// Otherwise, the vector is whatever we were just told it is.
 							effective_address_[0].full = uint32_t(source_bus_data_[0].halves.low.halves.low << 2);
 
-							printf("Interrupt vector: %06x\n", effective_address_[0].full);
+//							printf("Interrupt vector: %06x\n", effective_address_[0].full);
 						break;
 
 						case int_type(MicroOp::Action::CopyNextWord):