MAME SVN History

199869 Revisions

r21011 Wednesday 13th February, 2013 at 02:19:31 UTC by Angelo Salese
Attempt to add proper H/V latch settings

[src/emu/video]	stvvdp2.c
[src/mame/drivers]	saturn.c
[src/mame/includes]	stv.h

trunk/src/mame/drivers/saturn.c
r21010	r21011
1532	1532
1533	1533	//popmessage("%08x %d T0 %d T1 %d %08x",m_scu.ism ^ 0xffffffff,max_y,m_scu_regs[36],m_scu_regs[37],m_scu_regs[38]);
1534	1534
1535		if(scanline == (0)*y_step)
	1535	if(scanline == (vblank_line)*y_step)
1536	1536	{
1537	1537	video_update_vdp1();
1538	1538

trunk/src/mame/includes/stv.h
r21010	r21011
374	374
375	375	UINT8 get_vblank( void );
376	376	UINT8 get_hblank( void );
	377	int get_hcounter( void );
	378	int get_vcounter( void );
377	379	int get_vblank_duration( void );
378	380	int get_hblank_duration( void );
379	381	int get_pixel_clock( void );

trunk/src/emu/video/stvvdp2.c
r21010	r21011
5962	5962	/* latch h/v signals through HV latch*/
5963	5963	if(!STV_VDP2_EXLTEN)
5964	5964	{
5965		/* TODO: handle various h/v settings. */
5966	5965	if(!space.debugger_access())
5967	5966	{
5968		m_vdp2.h_count = space.machine().primary_screen->hpos() & 0x3ff;
5969		m_vdp2.v_count = space.machine().primary_screen->vpos() & (STV_VDP2_LSMD == 3 ? 0x7ff : 0x3ff);
	5967	m_vdp2.h_count = get_hcounter();
	5968	m_vdp2.v_count = get_vcounter();
5970	5969	/* latch flag */
5971	5970	m_vdp2.exltfg \|= 1;
5972	5971	}
r21010	r21011
6253	6252	return machine().primary_screen->frame_number() & 1;
6254	6253	}
6255	6254
	6255	/* TODO: these needs to be checked via HW tests! */
	6256	int saturn_state::get_hcounter( void )
	6257	{
	6258	int hcount;
	6259
	6260	hcount = machine().primary_screen->hpos();
	6261
	6262	switch(STV_VDP2_HRES & 6)
	6263	{
	6264	/* Normal */
	6265	case 0:
	6266	hcount &= 0x1ff;
	6267	hcount <<= 1;
	6268	break;
	6269	/* Hi-Res */
	6270	case 2:
	6271	hcount &= 0x3ff;
	6272	break;
	6273	/* Exclusive Normal*/
	6274	case 4:
	6275	hcount &= 0x1ff;
	6276	break;
	6277	/* Exclusive Hi-Res */
	6278	case 6:
	6279	hcount >>= 1;
	6280	hcount &= 0x1ff;
	6281	break;
	6282	}
	6283
	6284	return hcount;
	6285	}
	6286
	6287	int saturn_state::get_vcounter( void )
	6288	{
	6289	int vcount;
	6290
	6291	vcount = machine().primary_screen->vpos();
	6292
	6293	/* Exclusive Monitor */
	6294	if(STV_VDP2_HRES & 4)
	6295	return vcount & 0x3ff;
	6296
	6297	/* Double Density Interlace */
	6298	if((STV_VDP2_LSMD & 3) == 3)
	6299	return (vcount & ~1) \| (machine().primary_screen->frame_number() & 1);
	6300
	6301	return (vcount << 1); // Non-interlace
	6302	}
	6303
6256	6304	void saturn_state::stv_vdp2_state_save_postload( void )
6257	6305	{
6258	6306	UINT8 *gfxdata = m_vdp2.gfx_decode;

199869 Revisions