diff --git a/src/mame/video/dc.c b/src/mame/video/dc.c
index e3506460467..6d36b98cbc3 100644
--- a/src/mame/video/dc.c
+++ b/src/mame/video/dc.c
@@ -1961,7 +1961,7 @@ static void render_tri(running_machine &machine, bitmap_rgb32 &bitmap, texinfo *
 static void render_to_accumulation_buffer(running_machine &machine,bitmap_rgb32 &bitmap,const rectangle &cliprect)
 {
 	dc_state *state = machine.driver_data<dc_state>();
-	address_space &space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+	address_space &space = state->m_maincpu->space(AS_PROGRAM);
 	int cs,rs,ns;
 	UINT32 c;
 #if 0
diff --git a/src/mame/video/micro3d.c b/src/mame/video/micro3d.c
index bb33502cb91..2928f1e92ba 100644
--- a/src/mame/video/micro3d.c
+++ b/src/mame/video/micro3d.c
@@ -115,7 +115,7 @@ WRITE16_MEMBER(micro3d_state::micro3d_clut_w)
 WRITE16_MEMBER(micro3d_state::micro3d_creg_w)
 {
 	if (~data & 0x80)
-		machine().device("vgb")->execute().set_input_line(0, CLEAR_LINE);
+		m_vgb->set_input_line(0, CLEAR_LINE);
 
 	m_creg = data;
 }
@@ -665,7 +665,7 @@ WRITE32_MEMBER(micro3d_state::micro3d_fifo_w)
 				{
 					UINT32 dpram_r_addr = (((data & 0x01ff) << 1) | m_dpram_bank);
 					m_pipe_data = m_draw_dpram[dpram_r_addr];
-					machine().device("drmath")->execute().set_input_line(AM29000_INTR1, ASSERT_LINE);
+					m_drmath->set_input_line(AM29000_INTR1, ASSERT_LINE);
 					break;
 				}
 				case 0x80:
@@ -693,7 +693,7 @@ WRITE32_MEMBER(micro3d_state::micro3d_fifo_w)
 					/* TODO: We shouldn't need this extra buffer - is there some sort of sync missing? */
 					memcpy(m_frame_buffers[m_drawing_buffer], m_tmp_buffer, 512*1024*2);
 					m_drawing_buffer ^= 1;
-					machine().device("vgb")->execute().set_input_line(0, ASSERT_LINE);
+					m_vgb->set_input_line(0, ASSERT_LINE);
 					break;
 				}
 				default:
@@ -746,7 +746,7 @@ WRITE32_MEMBER(micro3d_state::micro3d_alt_fifo_w)
 
 READ32_MEMBER(micro3d_state::micro3d_pipe_r)
 {
-	machine().device("drmath")->execute().set_input_line(AM29000_INTR1, CLEAR_LINE);
+	m_drmath->set_input_line(AM29000_INTR1, CLEAR_LINE);
 	return m_pipe_data;
 }
 
diff --git a/src/mame/video/midzeus.c b/src/mame/video/midzeus.c
index 4218f04176b..bb32ceaa3c8 100644
--- a/src/mame/video/midzeus.c
+++ b/src/mame/video/midzeus.c
@@ -679,9 +679,9 @@ static void zeus_register_update(running_machine &machine, offs_t offset)
 			    we simply assert immediately if this is enabled. invasn needs this for proper
 			    operations */
 			if (state->m_zeusbase[0x80] & 0x02000000)
-				machine.device("maincpu")->execute().set_input_line(2, ASSERT_LINE);
+				state->m_maincpu->set_input_line(2, ASSERT_LINE);
 			else
-				machine.device("maincpu")->execute().set_input_line(2, CLEAR_LINE);
+				state->m_maincpu->set_input_line(2, CLEAR_LINE);
 			break;
 
 		case 0x84: