diff --git a/src/emu/machine/upd765.c b/src/emu/machine/upd765.c
index 8a44b7add2a..2407f68fa17 100644
--- a/src/emu/machine/upd765.c
+++ b/src/emu/machine/upd765.c
@@ -1219,6 +1219,8 @@ void upd765_family_device::start_command(int cmd)
 		break;
 
 	case C_SEEK:
+		other_irq = false;
+		check_irq();
 		seek_start(flopi[command[1] & 3]);
 		main_phase = PHASE_CMD;
 		break;
diff --git a/src/mess/machine/upd71071.c b/src/mess/machine/upd71071.c
index 8e0c15788bc..29f0edb68aa 100644
--- a/src/mess/machine/upd71071.c
+++ b/src/mess/machine/upd71071.c
@@ -148,7 +148,8 @@ TIMER_CALLBACK_MEMBER(upd71071_device::dma_transfer_timer)
 				m_reg.address_current[channel]--;
 			else
 				m_reg.address_current[channel]++;
-			if (m_reg.count_current[channel] == 0)
+			m_reg.count_current[channel]--;
+			if(m_reg.count_current[channel] == 0xffff)
 			{
 				if (m_reg.mode_control[channel] & 0x10)  // auto-initialise
 				{
@@ -158,8 +159,6 @@ TIMER_CALLBACK_MEMBER(upd71071_device::dma_transfer_timer)
 				// TODO: send terminal count
 				set_eop(ASSERT_LINE);
 			}
-			else
-				m_reg.count_current[channel]--;
 			break;
 		case 0x08:  // memory -> I/O
 			data = space.read_byte(m_reg.address_current[channel]);
@@ -169,7 +168,8 @@ TIMER_CALLBACK_MEMBER(upd71071_device::dma_transfer_timer)
 				m_reg.address_current[channel]--;
 			else
 				m_reg.address_current[channel]++;
-			if (m_reg.count_current[channel] == 0)
+			m_reg.count_current[channel]--;
+			if(m_reg.count_current[channel] == 0xffff)
 			{
 				if (m_reg.mode_control[channel] & 0x10)  // auto-initialise
 				{
@@ -179,8 +179,6 @@ TIMER_CALLBACK_MEMBER(upd71071_device::dma_transfer_timer)
 				// TODO: send terminal count
 				set_eop(ASSERT_LINE);
 			}
-			else
-				m_reg.count_current[channel]--;
 			break;
 		case 0x0c:  // Invalid
 			break;