From 3cff704ee384a3729d25bf2d2d84d1466ae85240 Mon Sep 17 00:00:00 2001
From: davidhay <davidhay@localhost>
Date: Sat, 11 Apr 2009 13:41:00 +0000
Subject: [PATCH] generate a few more interrupts on Naomi (ISP end of render,
 VIDEO end of render)

still need to test this to ensure it doesn't break anything, as I've disabled some old code that was neede before.
---
 src/mame/video/dc.c | 53 +++++++++++++++++++++++++++------------------
 1 file changed, 32 insertions(+), 21 deletions(-)

diff --git a/src/mame/video/dc.c b/src/mame/video/dc.c
index faa970e498e..f23ba31c60d 100644
--- a/src/mame/video/dc.c
+++ b/src/mame/video/dc.c
@@ -34,7 +34,10 @@ static UINT32 tafifo_buff[32];
 
 static emu_timer *vbout_timer;
 static emu_timer *hbin_timer;
-static emu_timer *endofrender_timer;
+static emu_timer *endofrender_timer_isp;
+static emu_timer *endofrender_timer_tsp;
+static emu_timer *endofrender_timer_video;
+
 static int scanline;
 static bitmap_t *fakeframebuffer_bitmap;
 static void testdrawscreen(const running_machine *machine,bitmap_t *bitmap,const rectangle *cliprect);
@@ -345,7 +348,7 @@ WRITE64_HANDLER( pvr_ta_w )
 				// we've got a request to draw, so, draw to the fake fraembuffer!
 				testdrawscreen(space->machine,fakeframebuffer_bitmap,&clip);
 
-				timer_adjust_oneshot(endofrender_timer, ATTOTIME_IN_USEC(1000) , 0); // hack, make sure render takes some amount of time
+				timer_adjust_oneshot(endofrender_timer_isp, ATTOTIME_IN_USEC(4000) , 0); // hack, make sure render takes some amount of time
 
 				break;
 			}
@@ -1379,35 +1382,38 @@ static TIMER_CALLBACK(hbin)
 	dc_sysctrl_regs[SB_ISTNRM] |= IST_HBL_IN; // H Blank-in interrupt
 	dc_update_interrupt_status(machine);
 
+//	printf("hbin on scanline %d\n",scanline);
+	
 	scanline++;
 
 	timer_adjust_oneshot(hbin_timer, video_screen_get_time_until_pos(machine->primary_screen, scanline, 640), 0);
 }
 
-// moved, interrupts should never be changed in a VIDEO_UDPATE call!!
-static TIMER_CALLBACK(endofrender)
+
+
+static TIMER_CALLBACK(endofrender_video)
 {
-	UINT32 a;
+	dc_sysctrl_regs[SB_ISTNRM] |= IST_EOR_VIDEO;// VIDEO end of render
+	dc_update_interrupt_status(machine);	
+	timer_adjust_oneshot(endofrender_timer_video, attotime_never, 0);
+}
 
-	//printf("endofrender\n");
-
-	// don't know if this is right.. but we get asserts otherwise, timing error?
-	if (state_ta.start_render_received == 1)
-	{
-		for (a=0;a < NUM_BUFFERS;a++)
-			if (state_ta.grab[a].busy == 1)
-				state_ta.grab[a].busy = 0;
-		state_ta.start_render_received = 0;
-	}
-
-	state_ta.start_render_received=0;
-	state_ta.renderselect= -1;
+static TIMER_CALLBACK(endofrender_tsp)
+{
 	dc_sysctrl_regs[SB_ISTNRM] |= IST_EOR_TSP;	// TSP end of render
 	dc_update_interrupt_status(machine);
 
-	timer_adjust_oneshot(endofrender_timer, attotime_never, 0);
+	timer_adjust_oneshot(endofrender_timer_tsp, attotime_never, 0);
+	timer_adjust_oneshot(endofrender_timer_video, ATTOTIME_IN_USEC(500) , 0); 
+}
 
+static TIMER_CALLBACK(endofrender_isp)
+{
+	dc_sysctrl_regs[SB_ISTNRM] |= IST_EOR_ISP;	// ISP end of render
+	dc_update_interrupt_status(machine);
 
+	timer_adjust_oneshot(endofrender_timer_isp, attotime_never, 0);
+	timer_adjust_oneshot(endofrender_timer_tsp, ATTOTIME_IN_USEC(500) , 0); 
 }
 
 
@@ -1440,8 +1446,13 @@ VIDEO_START(dc)
 	timer_adjust_oneshot(hbin_timer, attotime_never, 0);
 	scanline = 0;
 
-	endofrender_timer = timer_alloc(machine, endofrender, 0);
-	timer_adjust_oneshot(endofrender_timer, attotime_never, 0);
+	endofrender_timer_isp = timer_alloc(machine, endofrender_isp, 0);
+	endofrender_timer_tsp = timer_alloc(machine, endofrender_tsp, 0);
+	endofrender_timer_video = timer_alloc(machine, endofrender_video, 0);
+
+	timer_adjust_oneshot(endofrender_timer_isp, attotime_never, 0);
+	timer_adjust_oneshot(endofrender_timer_tsp, attotime_never, 0);
+	timer_adjust_oneshot(endofrender_timer_video, attotime_never, 0);
 
 	fakeframebuffer_bitmap = auto_bitmap_alloc(1024,1024,BITMAP_FORMAT_RGB32);