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r21846 Thursday 14th March, 2013 at 03:10:13 UTC by Barry Rodewald
fmtowns: set UX and Marty drivers to use 386SX CPU. (no whatsnew)

[src/mess/drivers]	fmtowns.c
[src/mess/includes]	fmtowns.h
[src/mess/video]	fmtowns.c

trunk/src/mess/video/fmtowns.c

r21845	r21846
574	574	logerror("VGA: VRAM wplane select (I/O) = 0x%02x\n",m_video.towns_vram_wplane);
575	575	}
576	576
577		READ32_MEMBER(towns_state::towns_video_unknown_r)
	577	READ8_MEMBER(towns_state::towns_video_unknown_r)
578	578	{
579		return 0x00000000;
	579	return 0x00;
580	580	}
581	581
582	582	/*

trunk/src/mess/includes/fmtowns.h

r21845	r21846
78	78	public:
79	79	towns_state(const machine_config &mconfig, device_type type, const char *tag)
80	80	: driver_device(mconfig, type, tag),
81		m_nvram(*this, "nvram")
	81	m_nvram(*this, "nvram"),
	82	m_nvram16(*this, "nvram16")
82	83	{ }
83	84
84	85	/* devices */
r21845	r21846
159	160	UINT8 m_prev_x;
160	161	UINT8 m_prev_y;
161	162
162		required_shared_ptr<UINT32> m_nvram;
	163	optional_shared_ptr<UINT32> m_nvram;
	164	optional_shared_ptr<UINT16> m_nvram16;
163	165
164	166	virtual void driver_start();
165	167	virtual void machine_reset();
r21845	r21846
183	185	DECLARE_WRITE8_MEMBER(towns_keyboard_w);
184	186	DECLARE_READ8_MEMBER(towns_port60_r);
185	187	DECLARE_WRITE8_MEMBER(towns_port60_w);
186		DECLARE_READ32_MEMBER(towns_sys5e8_r);
187		DECLARE_WRITE32_MEMBER(towns_sys5e8_w);
	188	DECLARE_READ8_MEMBER(towns_sys5e8_r);
	189	DECLARE_WRITE8_MEMBER(towns_sys5e8_w);
188	190	DECLARE_READ8_MEMBER(towns_sound_ctrl_r);
189	191	DECLARE_WRITE8_MEMBER(towns_sound_ctrl_w);
190		DECLARE_READ32_MEMBER(towns_padport_r);
191		DECLARE_WRITE32_MEMBER(towns_pad_mask_w);
	192	DECLARE_READ8_MEMBER(towns_padport_r);
	193	DECLARE_WRITE8_MEMBER(towns_pad_mask_w);
192	194	DECLARE_READ8_MEMBER(towns_cmos8_r);
193	195	DECLARE_WRITE8_MEMBER(towns_cmos8_w);
194	196	DECLARE_READ8_MEMBER(towns_cmos_low_r);
r21845	r21846
197	199	DECLARE_WRITE8_MEMBER(towns_cmos_w);
198	200	DECLARE_READ8_MEMBER(towns_sys480_r);
199	201	DECLARE_WRITE8_MEMBER(towns_sys480_w);
200		DECLARE_READ32_MEMBER(towns_video_404_r);
201		DECLARE_WRITE32_MEMBER(towns_video_404_w);
	202	DECLARE_READ8_MEMBER(towns_video_404_r);
	203	DECLARE_WRITE8_MEMBER(towns_video_404_w);
202	204	DECLARE_READ8_MEMBER(towns_cdrom_r);
203	205	DECLARE_WRITE8_MEMBER(towns_cdrom_w);
204		DECLARE_READ32_MEMBER(towns_rtc_r);
205		DECLARE_WRITE32_MEMBER(towns_rtc_w);
206		DECLARE_WRITE32_MEMBER(towns_rtc_select_w);
	206	DECLARE_READ8_MEMBER(towns_rtc_r);
	207	DECLARE_WRITE8_MEMBER(towns_rtc_w);
	208	DECLARE_WRITE8_MEMBER(towns_rtc_select_w);
207	209	DECLARE_READ8_MEMBER(towns_volume_r);
208	210	DECLARE_WRITE8_MEMBER(towns_volume_w);
209	211	DECLARE_READ8_MEMBER(towns_41ff_r);
r21845	r21846
223	225	DECLARE_READ8_MEMBER(towns_video_fd90_r);
224	226	DECLARE_WRITE8_MEMBER(towns_video_fd90_w);
225	227	DECLARE_READ8_MEMBER(towns_video_ff81_r);
226		DECLARE_READ32_MEMBER(towns_video_unknown_r);
	228	DECLARE_READ8_MEMBER(towns_video_unknown_r);
227	229	DECLARE_WRITE8_MEMBER(towns_video_ff81_w);
228	230	DECLARE_READ8_MEMBER(towns_spriteram_low_r);
229	231	DECLARE_WRITE8_MEMBER(towns_spriteram_low_w);
r21845	r21846
278	280	IRQ_CALLBACK_MEMBER(towns_irq_callback);
279	281	};
280	282
	283	class towns16_state : public towns_state
	284	{
	285	public:
	286	towns16_state(const machine_config &mconfig, device_type type, const char *tag)
	287	: towns_state(mconfig, type, tag)
	288	{ }
	289	};
	290
281	291	class marty_state : public towns_state
282	292	{
283	293	public:

trunk/src/mess/drivers/fmtowns.c

r21845	r21846
810	810	//logerror("PIT: wrote 0x%02x to port 0x60\n",data);
811	811	}
812	812
813		READ32_MEMBER(towns_state::towns_sys5e8_r)
	813	READ8_MEMBER(towns_state::towns_sys5e8_r)
814	814	{
815	815	switch(offset)
816	816	{
817	817	case 0x00:
818		if(ACCESSING_BITS_0_7)
819		{
820		logerror("SYS: read RAM size port (%i)\n",m_ram->size());
821		return m_ram->size()/1048576;
822		}
823		break;
824		case 0x01:
825		if(ACCESSING_BITS_0_7)
826		{
827		logerror("SYS: read port 5ec\n");
828		return m_compat_mode & 0x01;
829		}
830		break;
	818	logerror("SYS: read RAM size port (%i)\n",m_ram->size());
	819	return m_ram->size()/1048576;
	820	case 0x02:
	821	logerror("SYS: read port 5ec\n");
	822	return m_compat_mode & 0x01;
831	823	}
832	824	return 0x00;
833	825	}
834	826
835		WRITE32_MEMBER(towns_state::towns_sys5e8_w)
	827	WRITE8_MEMBER(towns_state::towns_sys5e8_w)
836	828	{
837	829	switch(offset)
838	830	{
839	831	case 0x00:
840		if(ACCESSING_BITS_0_7)
841		{
842		logerror("SYS: wrote 0x%02x to port 5e8\n",data);
843		}
	832	logerror("SYS: wrote 0x%02x to port 5e8\n",data);
844	833	break;
845		case 0x01:
846		if(ACCESSING_BITS_0_7)
847		{
848		logerror("SYS: wrote 0x%02x to port 5ec\n",data);
849		m_compat_mode = data & 0x01;
850		}
	834	case 0x02:
	835	logerror("SYS: wrote 0x%02x to port 5ec\n",data);
	836	m_compat_mode = data & 0x01;
851	837	break;
852	838	}
853	839	}
r21845	r21846
904	890	m_towns_mouse_output = MOUSE_START;  // reset mouse data
905	891	}
906	892
907		READ32_MEMBER(towns_state::towns_padport_r)
	893	READ8_MEMBER(towns_state::towns_padport_r)
908	894	{
909		UINT32 ret = 0;
	895	UINT8 ret = 0x00;
910	896	UINT32 porttype = space.machine().root_device().ioport("ctrltype")->read();
911	897	UINT8 extra1;
912	898	UINT8 extra2;
913	899	UINT32 state;
914	900
915		if((porttype & 0x0f) == 0x00)
916		ret |= 0x000000ff;
917		if((porttype & 0xf0) == 0x00)
918		ret |= 0x00ff0000;
919		if((porttype & 0x0f) == 0x01)
	901	if(offset == 0)
920	902	{
921		extra1 = space.machine().root_device().ioport("joy1_ex")->read();
	903	if((porttype & 0x0f) == 0x01)
	904	{
	905	extra1 = space.machine().root_device().ioport("joy1_ex")->read();
922	906
923		if(m_towns_pad_mask & 0x10)
924		ret |= (space.machine().root_device().ioport("joy1")->read() & 0x3f) | 0x00000040;
925		else
926		ret |= (space.machine().root_device().ioport("joy1")->read() & 0x0f) | 0x00000030;
	907	if(m_towns_pad_mask & 0x10)
	908	ret |= (space.machine().root_device().ioport("joy1")->read() & 0x3f) | 0x40;
	909	else
	910	ret |= (space.machine().root_device().ioport("joy1")->read() & 0x0f) | 0x30;
927	911
928		if(extra1 & 0x01) // Run button = left+right
929		ret &= ~0x0000000c;
930		if(extra1 & 0x02) // Select button = up+down
931		ret &= ~0x00000003;
	912	if(extra1 & 0x01) // Run button = left+right
	913	ret &= ~0x0c;
	914	if(extra1 & 0x02) // Select button = up+down
	915	ret &= ~0x03;
932	916
933		if((extra1 & 0x10) && (m_towns_pad_mask & 0x01))
934		ret &= ~0x00000010;
935		if((extra1 & 0x20) && (m_towns_pad_mask & 0x02))
936		ret &= ~0x00000020;
937		}
938		if((porttype & 0xf0) == 0x10)
939		{
940		extra2 = space.machine().root_device().ioport("joy2_ex")->read();
	917	if((extra1 & 0x10) && (m_towns_pad_mask & 0x01))
	918	ret &= ~0x10;
	919	if((extra1 & 0x20) && (m_towns_pad_mask & 0x02))
	920	ret &= ~0x20;
	921	}
	922	if((porttype & 0x0f) == 0x04)  // 6-button joystick
	923	{
	924	extra1 = space.machine().root_device().ioport("6b_joy1_ex")->read();
941	925
942		if(m_towns_pad_mask & 0x20)
943		ret |= ((space.machine().root_device().ioport("joy2")->read() & 0x3f) << 16) | 0x00400000;
944		else
945		ret |= ((space.machine().root_device().ioport("joy2")->read() & 0x0f) << 16) | 0x00300000;
	926	if(m_towns_pad_mask & 0x10)
	927	ret |= 0x7f;
	928	else
	929	ret |= (space.machine().root_device().ioport("6b_joy1")->read() & 0x0f) | 0x70;
946	930
947		if(extra2 & 0x01)
948		ret &= ~0x000c0000;
949		if(extra2 & 0x02)
950		ret &= ~0x00030000;
951
952		if((extra2 & 0x10) && (m_towns_pad_mask & 0x04))
953		ret &= ~0x00100000;
954		if((extra2 & 0x20) && (m_towns_pad_mask & 0x08))
955		ret &= ~0x00200000;
956		}
957		if((porttype & 0x0f) == 0x04)  // 6-button joystick
958		{
959		extra1 = space.machine().root_device().ioport("6b_joy1_ex")->read();
960
961		if(m_towns_pad_mask & 0x10)
962		ret |= 0x0000007f;
963		else
964		ret |= (space.machine().root_device().ioport("6b_joy1")->read() & 0x0f) | 0x00000070;
965
966		if(!(m_towns_pad_mask & 0x10))
967		{
968		if(extra1 & 0x01) // Run button = left+right
969		ret &= ~0x0000000c;
970		if(extra1 & 0x02) // Select button = up+down
971		ret &= ~0x00000003;
972		if((extra1 & 0x04) && (m_towns_pad_mask & 0x01))
973		ret &= ~0x00000010;
974		if((extra1 & 0x08) && (m_towns_pad_mask & 0x02))
975		ret &= ~0x00000020;
	931	if(!(m_towns_pad_mask & 0x10))
	932	{
	933	if(extra1 & 0x01) // Run button = left+right
	934	ret &= ~0x0c;
	935	if(extra1 & 0x02) // Select button = up+down
	936	ret &= ~0x03;
	937	if((extra1 & 0x04) && (m_towns_pad_mask & 0x01))
	938	ret &= ~0x10;
	939	if((extra1 & 0x08) && (m_towns_pad_mask & 0x02))
	940	ret &= ~0x20;
	941	}
	942	if(m_towns_pad_mask & 0x10)
	943	{
	944	if(extra1 & 0x10)
	945	ret &= ~0x08;
	946	if(extra1 & 0x20)
	947	ret &= ~0x04;
	948	if(extra1 & 0x40)
	949	ret &= ~0x02;
	950	if(extra1 & 0x80)
	951	ret &= ~0x01;
	952	}
976	953	}
977		if(m_towns_pad_mask & 0x10)
	954	if((porttype & 0x0f) == 0x02)  // mouse
978	955	{
979		if(extra1 & 0x10)
980		ret &= ~0x00000008;
981		if(extra1 & 0x20)
982		ret &= ~0x00000004;
983		if(extra1 & 0x40)
984		ret &= ~0x00000002;
985		if(extra1 & 0x80)
986		ret &= ~0x00000001;
	956	switch(m_towns_mouse_output)
	957	{
	958	case MOUSE_X_HIGH:
	959	ret |= ((m_towns_mouse_x & 0xf0) >> 4);
	960	break;
	961	case MOUSE_X_LOW:
	962	ret |= (m_towns_mouse_x & 0x0f);
	963	break;
	964	case MOUSE_Y_HIGH:
	965	ret |= ((m_towns_mouse_y & 0xf0) >> 4);
	966	break;
	967	case MOUSE_Y_LOW:
	968	ret |= (m_towns_mouse_y & 0x0f);
	969	break;
	970	case MOUSE_START:
	971	case MOUSE_SYNC:
	972	default:
	973	if(m_towns_mouse_output < MOUSE_Y_LOW)
	974	ret |= 0x0f;
	975	}
	976
	977	// button states are always visible
	978	state = space.machine().root_device().ioport("mouse1")->read();
	979	if(!(state & 0x01))
	980	ret |= 0x10;
	981	if(!(state & 0x02))
	982	ret |= 0x20;
	983	if(m_towns_pad_mask & 0x10)
	984	ret |= 0x40;
987	985	}
	986
988	987	}
989		if((porttype & 0xf0) == 0x40)  // 6-button joystick
	988	if(offset == 1)  // second joystick port
990	989	{
991		extra2 = space.machine().root_device().ioport("6b_joy2_ex")->read();
	990	if((porttype & 0xf0) == 0x10)
	991	{
	992	extra2 = space.machine().root_device().ioport("joy2_ex")->read();
992	993
993		if(m_towns_pad_mask & 0x20)
994		ret |= 0x007f0000;
995		else
996		ret |= ((space.machine().root_device().ioport("6b_joy2")->read() & 0x0f) << 16) | 0x00700000;
	994	if(m_towns_pad_mask & 0x20)
	995	ret |= ((space.machine().root_device().ioport("joy2")->read() & 0x3f)) | 0x40;
	996	else
	997	ret |= ((space.machine().root_device().ioport("joy2")->read() & 0x0f)) | 0x30;
997	998
998		if(!(m_towns_pad_mask & 0x10))
999		{
1000	999	if(extra2 & 0x01)
1001		ret &= ~0x000c0000;
	1000	ret &= ~0x0c;
1002	1001	if(extra2 & 0x02)
1003		ret &= ~0x00030000;
	1002	ret &= ~0x03;
	1003
1004	1004	if((extra2 & 0x10) && (m_towns_pad_mask & 0x04))
1005		ret &= ~0x00100000;
	1005	ret &= ~0x10;
1006	1006	if((extra2 & 0x20) && (m_towns_pad_mask & 0x08))
1007		ret &= ~0x00200000;
	1007	ret &= ~0x20;
1008	1008	}
1009		if(m_towns_pad_mask & 0x20)
	1009	if((porttype & 0xf0) == 0x40)  // 6-button joystick
1010	1010	{
1011		if(extra2 & 0x10)
1012		ret &= ~0x00080000;
1013		if(extra2 & 0x20)
1014		ret &= ~0x00040000;
1015		if(extra2 & 0x40)
1016		ret &= ~0x00020000;
1017		if(extra2 & 0x80)
1018		ret &= ~0x00010000;
	1011	extra2 = space.machine().root_device().ioport("6b_joy2_ex")->read();
	1012
	1013	if(m_towns_pad_mask & 0x20)
	1014	ret |= 0x7f;
	1015	else
	1016	ret |= ((space.machine().root_device().ioport("6b_joy2")->read() & 0x0f)) | 0x70;
	1017
	1018	if(!(m_towns_pad_mask & 0x10))
	1019	{
	1020	if(extra2 & 0x01)
	1021	ret &= ~0x0c;
	1022	if(extra2 & 0x02)
	1023	ret &= ~0x03;
	1024	if((extra2 & 0x10) && (m_towns_pad_mask & 0x04))
	1025	ret &= ~0x10;
	1026	if((extra2 & 0x20) && (m_towns_pad_mask & 0x08))
	1027	ret &= ~0x20;
	1028	}
	1029	if(m_towns_pad_mask & 0x20)
	1030	{
	1031	if(extra2 & 0x10)
	1032	ret &= ~0x08;
	1033	if(extra2 & 0x20)
	1034	ret &= ~0x04;
	1035	if(extra2 & 0x40)
	1036	ret &= ~0x02;
	1037	if(extra2 & 0x80)
	1038	ret &= ~0x01;
	1039	}
1019	1040	}
1020		}
1021		if((porttype & 0x0f) == 0x02)  // mouse
1022		{
1023		switch(m_towns_mouse_output)
	1041	if((porttype & 0xf0) == 0x20)  // mouse
1024	1042	{
1025		case MOUSE_X_HIGH:
1026		ret |= ((m_towns_mouse_x & 0xf0) >> 4);
1027		break;
1028		case MOUSE_X_LOW:
1029		ret |= (m_towns_mouse_x & 0x0f);
1030		break;
1031		case MOUSE_Y_HIGH:
1032		ret |= ((m_towns_mouse_y & 0xf0) >> 4);
1033		break;
1034		case MOUSE_Y_LOW:
1035		ret |= (m_towns_mouse_y & 0x0f);
1036		break;
1037		case MOUSE_START:
1038		case MOUSE_SYNC:
1039		default:
1040		if(m_towns_mouse_output < MOUSE_Y_LOW)
1041		ret |= 0x0000000f;
1042		}
	1043	switch(m_towns_mouse_output)
	1044	{
	1045	case MOUSE_X_HIGH:
	1046	ret |= ((m_towns_mouse_x & 0xf0));
	1047	break;
	1048	case MOUSE_X_LOW:
	1049	ret |= ((m_towns_mouse_x & 0x0f));
	1050	break;
	1051	case MOUSE_Y_HIGH:
	1052	ret |= ((m_towns_mouse_y & 0xf0));
	1053	break;
	1054	case MOUSE_Y_LOW:
	1055	ret |= ((m_towns_mouse_y & 0x0f));
	1056	break;
	1057	case MOUSE_START:
	1058	case MOUSE_SYNC:
	1059	default:
	1060	if(m_towns_mouse_output < MOUSE_Y_LOW)
	1061	ret |= 0x0f;
	1062	}
1043	1063
1044		// button states are always visible
1045		state = space.machine().root_device().ioport("mouse1")->read();
1046		if(!(state & 0x01))
1047		ret |= 0x00000010;
1048		if(!(state & 0x02))
1049		ret |= 0x00000020;
1050		if(m_towns_pad_mask & 0x10)
1051		ret |= 0x00000040;
1052		}
1053		if((porttype & 0xf0) == 0x20)  // mouse
1054		{
1055		switch(m_towns_mouse_output)
1056		{
1057		case MOUSE_X_HIGH:
1058		ret |= ((m_towns_mouse_x & 0xf0) << 12);
1059		break;
1060		case MOUSE_X_LOW:
1061		ret |= ((m_towns_mouse_x & 0x0f) << 16);
1062		break;
1063		case MOUSE_Y_HIGH:
1064		ret |= ((m_towns_mouse_y & 0xf0) << 12);
1065		break;
1066		case MOUSE_Y_LOW:
1067		ret |= ((m_towns_mouse_y & 0x0f) << 16);
1068		break;
1069		case MOUSE_START:
1070		case MOUSE_SYNC:
1071		default:
1072		if(m_towns_mouse_output < MOUSE_Y_LOW)
1073		ret |= 0x000f0000;
	1064	// button states are always visible
	1065	state = space.machine().root_device().ioport("mouse1")->read();
	1066	if(!(state & 0x01))
	1067	ret |= 0x10;
	1068	if(!(state & 0x02))
	1069	ret |= 0x20;
	1070	if(m_towns_pad_mask & 0x20)
	1071	ret |= 0x40;
1074	1072	}
1075
1076		// button states are always visible
1077		state = space.machine().root_device().ioport("mouse1")->read();
1078		if(!(state & 0x01))
1079		ret |= 0x00100000;
1080		if(!(state & 0x02))
1081		ret |= 0x00200000;
1082		if(m_towns_pad_mask & 0x20)
1083		ret |= 0x00400000;
1084	1073	}
1085	1074
1086	1075	return ret;
1087	1076	}
1088	1077
1089		WRITE32_MEMBER(towns_state::towns_pad_mask_w)
	1078	WRITE8_MEMBER(towns_state::towns_pad_mask_w)
1090	1079	{
1091	1080	UINT8 current_x,current_y;
1092	1081	UINT32 type = space.machine().root_device().ioport("ctrltype")->read();
1093	1082
1094		if(ACCESSING_BITS_16_23)
	1083	m_towns_pad_mask = (data & 0xff);
	1084	if((type & 0x0f) == 0x02)  // mouse
1095	1085	{
1096		m_towns_pad_mask = (data & 0x00ff0000) >> 16;
1097		if((type & 0x0f) == 0x02)  // mouse
	1086	if((m_towns_pad_mask & 0x10) != 0 && (m_prev_pad_mask & 0x10) == 0)
1098	1087	{
1099		if((m_towns_pad_mask & 0x10) != 0 && (m_prev_pad_mask & 0x10) == 0)
	1088	if(m_towns_mouse_output == MOUSE_START)
1100	1089	{
1101		if(m_towns_mouse_output == MOUSE_START)
1102		{
1103		m_towns_mouse_output = MOUSE_X_HIGH;
1104		current_x = space.machine().root_device().ioport("mouse2")->read();
1105		current_y = space.machine().root_device().ioport("mouse3")->read();
1106		m_towns_mouse_x = m_prev_x - current_x;
1107		m_towns_mouse_y = m_prev_y - current_y;
1108		m_prev_x = current_x;
1109		m_prev_y = current_y;
1110		}
1111		else
1112		m_towns_mouse_output++;
1113		m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1090	m_towns_mouse_output = MOUSE_X_HIGH;
	1091	current_x = space.machine().root_device().ioport("mouse2")->read();
	1092	current_y = space.machine().root_device().ioport("mouse3")->read();
	1093	m_towns_mouse_x = m_prev_x - current_x;
	1094	m_towns_mouse_y = m_prev_y - current_y;
	1095	m_prev_x = current_x;
	1096	m_prev_y = current_y;
1114	1097	}
1115		if((m_towns_pad_mask & 0x10) == 0 && (m_prev_pad_mask & 0x10) != 0)
	1098	else
	1099	m_towns_mouse_output++;
	1100	m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1101	}
	1102	if((m_towns_pad_mask & 0x10) == 0 && (m_prev_pad_mask & 0x10) != 0)
	1103	{
	1104	if(m_towns_mouse_output == MOUSE_START)
1116	1105	{
1117		if(m_towns_mouse_output == MOUSE_START)
1118		{
1119		m_towns_mouse_output = MOUSE_SYNC;
1120		current_x = space.machine().root_device().ioport("mouse2")->read();
1121		current_y = space.machine().root_device().ioport("mouse3")->read();
1122		m_towns_mouse_x = m_prev_x - current_x;
1123		m_towns_mouse_y = m_prev_y - current_y;
1124		m_prev_x = current_x;
1125		m_prev_y = current_y;
1126		}
1127		else
1128		m_towns_mouse_output++;
1129		m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1106	m_towns_mouse_output = MOUSE_SYNC;
	1107	current_x = space.machine().root_device().ioport("mouse2")->read();
	1108	current_y = space.machine().root_device().ioport("mouse3")->read();
	1109	m_towns_mouse_x = m_prev_x - current_x;
	1110	m_towns_mouse_y = m_prev_y - current_y;
	1111	m_prev_x = current_x;
	1112	m_prev_y = current_y;
1130	1113	}
1131		m_prev_pad_mask = m_towns_pad_mask;
	1114	else
	1115	m_towns_mouse_output++;
	1116	m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
1132	1117	}
1133		if((type & 0xf0) == 0x20)  // mouse
	1118	m_prev_pad_mask = m_towns_pad_mask;
	1119	}
	1120	if((type & 0xf0) == 0x20)  // mouse
	1121	{
	1122	if((m_towns_pad_mask & 0x20) != 0 && (m_prev_pad_mask & 0x20) == 0)
1134	1123	{
1135		if((m_towns_pad_mask & 0x20) != 0 && (m_prev_pad_mask & 0x20) == 0)
	1124	if(m_towns_mouse_output == MOUSE_START)
1136	1125	{
1137		if(m_towns_mouse_output == MOUSE_START)
1138		{
1139		m_towns_mouse_output = MOUSE_X_HIGH;
1140		current_x = space.machine().root_device().ioport("mouse2")->read();
1141		current_y = space.machine().root_device().ioport("mouse3")->read();
1142		m_towns_mouse_x = m_prev_x - current_x;
1143		m_towns_mouse_y = m_prev_y - current_y;
1144		m_prev_x = current_x;
1145		m_prev_y = current_y;
1146		}
1147		else
1148		m_towns_mouse_output++;
1149		m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1126	m_towns_mouse_output = MOUSE_X_HIGH;
	1127	current_x = space.machine().root_device().ioport("mouse2")->read();
	1128	current_y = space.machine().root_device().ioport("mouse3")->read();
	1129	m_towns_mouse_x = m_prev_x - current_x;
	1130	m_towns_mouse_y = m_prev_y - current_y;
	1131	m_prev_x = current_x;
	1132	m_prev_y = current_y;
1150	1133	}
1151		if((m_towns_pad_mask & 0x20) == 0 && (m_prev_pad_mask & 0x20) != 0)
	1134	else
	1135	m_towns_mouse_output++;
	1136	m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1137	}
	1138	if((m_towns_pad_mask & 0x20) == 0 && (m_prev_pad_mask & 0x20) != 0)
	1139	{
	1140	if(m_towns_mouse_output == MOUSE_START)
1152	1141	{
1153		if(m_towns_mouse_output == MOUSE_START)
1154		{
1155		m_towns_mouse_output = MOUSE_SYNC;
1156		current_x = space.machine().root_device().ioport("mouse2")->read();
1157		current_y = space.machine().root_device().ioport("mouse3")->read();
1158		m_towns_mouse_x = m_prev_x - current_x;
1159		m_towns_mouse_y = m_prev_y - current_y;
1160		m_prev_x = current_x;
1161		m_prev_y = current_y;
1162		}
1163		else
1164		m_towns_mouse_output++;
1165		m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
	1142	m_towns_mouse_output = MOUSE_SYNC;
	1143	current_x = space.machine().root_device().ioport("mouse2")->read();
	1144	current_y = space.machine().root_device().ioport("mouse3")->read();
	1145	m_towns_mouse_x = m_prev_x - current_x;
	1146	m_towns_mouse_y = m_prev_y - current_y;
	1147	m_prev_x = current_x;
	1148	m_prev_y = current_y;
1166	1149	}
1167		m_prev_pad_mask = m_towns_pad_mask;
	1150	else
	1151	m_towns_mouse_output++;
	1152	m_towns_mouse_timer->adjust(attotime::from_usec(600),0,attotime::zero);
1168	1153	}
	1154	m_prev_pad_mask = m_towns_pad_mask;
1169	1155	}
1170	1156	}
1171	1157
r21845	r21846
1174	1160	if(m_towns_mainmem_enable != 0)
1175	1161	return m_messram->pointer()[offset + 0xd8000];
1176	1162
1177		return m_nvram[offset];
	1163	if(m_nvram)
	1164	return m_nvram[offset];
	1165	else
	1166	return m_nvram16[offset];
1178	1167	}
1179	1168
1180	1169	WRITE8_MEMBER( towns_state::towns_cmos_low_w )
r21845	r21846
1182	1171	if(m_towns_mainmem_enable != 0)
1183	1172	m_messram->pointer()[offset+0xd8000] = data;
1184	1173	else
1185		m_nvram[offset] = data;
	1174	if(m_nvram)
	1175	m_nvram[offset] = data;
	1176	else
	1177	m_nvram16[offset] = data;
1186	1178	}
1187	1179
1188	1180	READ8_MEMBER( towns_state::towns_cmos_r )
1189	1181	{
1190		return m_nvram[offset];
	1182	if(m_nvram)
	1183	return m_nvram[offset];
	1184	else
	1185	return m_nvram16[offset];
1191	1186	}
1192	1187
1193	1188	WRITE8_MEMBER( towns_state::towns_cmos_w )
1194	1189	{
1195		m_nvram[offset] = data;
	1190	if(m_nvram)
	1191	m_nvram[offset] = data;
	1192	else
	1193	m_nvram16[offset] = data;
1196	1194	}
1197	1195
1198	1196	void towns_state::towns_update_video_banks(address_space& space)
r21845	r21846
1261	1259	towns_update_video_banks(space);
1262	1260	}
1263	1261
1264		WRITE32_MEMBER( towns_state::towns_video_404_w )
	1262	WRITE8_MEMBER( towns_state::towns_video_404_w )
1265	1263	{
1266		if(ACCESSING_BITS_0_7)
1267		{
1268		m_towns_mainmem_enable = data & 0x80;
1269		towns_update_video_banks(space);
1270		}
	1264	m_towns_mainmem_enable = data & 0x80;
	1265	towns_update_video_banks(space);
1271	1266	}
1272	1267
1273		READ32_MEMBER( towns_state::towns_video_404_r )
	1268	READ8_MEMBER( towns_state::towns_video_404_r )
1274	1269	{
1275		if(ACCESSING_BITS_0_7)
1276		{
1277		if(m_towns_mainmem_enable != 0)
1278		return 0x00000080;
1279		}
1280		return 0;
	1270	if(m_towns_mainmem_enable != 0)
	1271	return 0x80;
	1272	else
	1273	return 0x00;
1281	1274	}
1282	1275
1283	1276	/*
r21845	r21846
1921	1914	* 0x70: Data port
1922	1915	* 0x80: Register select
1923	1916	*/
1924		READ32_MEMBER(towns_state::towns_rtc_r)
	1917	READ8_MEMBER(towns_state::towns_rtc_r)
1925	1918	{
1926		if(ACCESSING_BITS_0_7)
1927		return 0x80 | m_towns_rtc_reg[m_towns_rtc_select];
1928
1929		return 0x00;
	1919	return 0x80 | m_towns_rtc_reg[m_towns_rtc_select];
1930	1920	}
1931	1921
1932		WRITE32_MEMBER(towns_state::towns_rtc_w)
	1922	WRITE8_MEMBER(towns_state::towns_rtc_w)
1933	1923	{
1934		if(ACCESSING_BITS_0_7)
1935		m_towns_rtc_data = data;
	1924	m_towns_rtc_data = data;
1936	1925	}
1937	1926
1938		WRITE32_MEMBER(towns_state::towns_rtc_select_w)
	1927	WRITE8_MEMBER(towns_state::towns_rtc_select_w)
1939	1928	{
1940		if(ACCESSING_BITS_0_7)
	1929	if(data & 0x80)
1941	1930	{
1942		if(data & 0x80)
1943		{
1944		if(data & 0x01)
1945		m_towns_rtc_select = m_towns_rtc_data & 0x0f;
1946		}
	1931	if(data & 0x01)
	1932	m_towns_rtc_select = m_towns_rtc_data & 0x0f;
1947	1933	}
1948	1934	}
1949	1935
r21845	r21846
2186	2172	AM_RANGE(0xfffc0000, 0xffffffff) AM_ROM AM_REGION("user",0x200000)  // SYSTEM ROM
2187	2173	ADDRESS_MAP_END
2188	2174
2189		static ADDRESS_MAP_START(marty_mem, AS_PROGRAM, 32, towns_state)
2190		ADDRESS_MAP_GLOBAL_MASK(0x00ffffff)  // 386SX has only a 24-bit address range
	2175	static ADDRESS_MAP_START(marty_mem, AS_PROGRAM, 16, towns_state)
2191	2176	AM_RANGE(0x00000000, 0x000bffff) AM_RAM
2192		AM_RANGE(0x000c0000, 0x000c7fff) AM_READWRITE8(towns_gfx_r,towns_gfx_w,0xffffffff)
2193		AM_RANGE(0x000c8000, 0x000cafff) AM_READWRITE8(towns_spriteram_low_r,towns_spriteram_low_w,0xffffffff)
	2177	AM_RANGE(0x000c0000, 0x000c7fff) AM_READWRITE8(towns_gfx_r,towns_gfx_w,0xffff)
	2178	AM_RANGE(0x000c8000, 0x000cafff) AM_READWRITE8(towns_spriteram_low_r,towns_spriteram_low_w,0xffff)
2194	2179	AM_RANGE(0x000cb000, 0x000cbfff) AM_READ_BANK("bank6") AM_WRITE_BANK("bank7")
2195	2180	AM_RANGE(0x000cc000, 0x000cff7f) AM_RAM
2196		AM_RANGE(0x000cff80, 0x000cffff) AM_READWRITE8(towns_video_cff80_mem_r,towns_video_cff80_mem_w,0xffffffff)
	2181	AM_RANGE(0x000cff80, 0x000cffff) AM_READWRITE8(towns_video_cff80_mem_r,towns_video_cff80_mem_w,0xffff)
2197	2182	AM_RANGE(0x000d0000, 0x000d7fff) AM_RAM
2198		AM_RANGE(0x000d8000, 0x000d9fff) AM_READWRITE8(towns_cmos_low_r,towns_cmos_low_w,0xffffffff) AM_SHARE("nvram") // CMOS? RAM
	2183	AM_RANGE(0x000d8000, 0x000d9fff) AM_READWRITE8(towns_cmos_low_r,towns_cmos_low_w,0xffff) AM_SHARE("nvram16") // CMOS? RAM
2199	2184	AM_RANGE(0x000da000, 0x000effff) AM_RAM //READWRITE(SMH_BANK(11),SMH_BANK(11))
2200	2185	AM_RANGE(0x000f0000, 0x000f7fff) AM_RAM //READWRITE(SMH_BANK(12),SMH_BANK(12))
2201	2186	AM_RANGE(0x000f8000, 0x000fffff) AM_READ_BANK("bank11") AM_WRITE_BANK("bank12")
2202	2187	//  AM_RANGE(0x00100000, 0x005fffff) AM_RAM  // some extra RAM - the Marty has 6MB RAM (not upgradable)
2203	2188	AM_RANGE(0x00600000, 0x0067ffff) AM_ROM AM_REGION("user",0x000000)  // OS
2204	2189	AM_RANGE(0x00680000, 0x0087ffff) AM_ROM AM_REGION("user",0x280000)  // EX ROM
2205		AM_RANGE(0x00a00000, 0x00a7ffff) AM_READWRITE8(towns_gfx_high_r,towns_gfx_high_w,0xffffffff) AM_MIRROR(0x180000) // VRAM
	2190	AM_RANGE(0x00a00000, 0x00a7ffff) AM_READWRITE8(towns_gfx_high_r,towns_gfx_high_w,0xffff) AM_MIRROR(0x180000) // VRAM
2206	2191	AM_RANGE(0x00b00000, 0x00b7ffff) AM_ROM AM_REGION("user",0x180000)  // FONT
2207		AM_RANGE(0x00c00000, 0x00c1ffff) AM_READWRITE8(towns_spriteram_r,towns_spriteram_w,0xffffffff) // Sprite RAM
	2192	AM_RANGE(0x00c00000, 0x00c1ffff) AM_READWRITE8(towns_spriteram_r,towns_spriteram_w,0xffff) // Sprite RAM
2208	2193	AM_RANGE(0x00d00000, 0x00dfffff) AM_RAM // IC Memory Card (is this usable on the Marty?)
2209	2194	AM_RANGE(0x00e80000, 0x00efffff) AM_ROM AM_REGION("user",0x100000)  // DIC ROM
2210	2195	AM_RANGE(0x00f00000, 0x00f7ffff) AM_ROM AM_REGION("user",0x180000)  // FONT
2211		AM_RANGE(0x00f80000, 0x00f8ffff) AM_DEVREADWRITE8("pcm", rf5c68_device, rf5c68_mem_r, rf5c68_mem_w, 0xffffffff)  // WAVE RAM
	2196	AM_RANGE(0x00f80000, 0x00f8ffff) AM_DEVREADWRITE8("pcm", rf5c68_device, rf5c68_mem_r, rf5c68_mem_w, 0xffff)  // WAVE RAM
2212	2197	AM_RANGE(0x00fc0000, 0x00ffffff) AM_ROM AM_REGION("user",0x200000)  // SYSTEM ROM
2213	2198	AM_RANGE(0xfffc0000, 0xffffffff) AM_ROM AM_REGION("user",0x200000)  // SYSTEM ROM
2214	2199	ADDRESS_MAP_END
2215	2200
2216		static ADDRESS_MAP_START(ux_mem, AS_PROGRAM, 32, towns_state)
2217		ADDRESS_MAP_GLOBAL_MASK(0x00ffffff)  // 386SX has only a 24-bit address range
	2201	static ADDRESS_MAP_START(ux_mem, AS_PROGRAM, 16, towns_state)
2218	2202	AM_RANGE(0x00000000, 0x000bffff) AM_RAM
2219		AM_RANGE(0x000c0000, 0x000c7fff) AM_READWRITE8(towns_gfx_r,towns_gfx_w,0xffffffff)
2220		AM_RANGE(0x000c8000, 0x000cafff) AM_READWRITE8(towns_spriteram_low_r,towns_spriteram_low_w,0xffffffff)
	2203	AM_RANGE(0x000c0000, 0x000c7fff) AM_READWRITE8(towns_gfx_r,towns_gfx_w,0xffff)
	2204	AM_RANGE(0x000c8000, 0x000cafff) AM_READWRITE8(towns_spriteram_low_r,towns_spriteram_low_w,0xffff)
2221	2205	AM_RANGE(0x000cb000, 0x000cbfff) AM_READ_BANK("bank6") AM_WRITE_BANK("bank7")
2222	2206	AM_RANGE(0x000cc000, 0x000cff7f) AM_RAM
2223		AM_RANGE(0x000cff80, 0x000cffff) AM_READWRITE8(towns_video_cff80_mem_r,towns_video_cff80_mem_w,0xffffffff)
	2207	AM_RANGE(0x000cff80, 0x000cffff) AM_READWRITE8(towns_video_cff80_mem_r,towns_video_cff80_mem_w,0xffff)
2224	2208	AM_RANGE(0x000d0000, 0x000d7fff) AM_RAM
2225		AM_RANGE(0x000d8000, 0x000d9fff) AM_READWRITE8(towns_cmos_low_r,towns_cmos_low_w,0xffffffff) AM_SHARE("nvram") // CMOS? RAM
	2209	AM_RANGE(0x000d8000, 0x000d9fff) AM_READWRITE8(towns_cmos_low_r,towns_cmos_low_w,0xffff) AM_SHARE("nvram16") // CMOS? RAM
2226	2210	AM_RANGE(0x000da000, 0x000effff) AM_RAM //READWRITE(SMH_BANK(11),SMH_BANK(11))
2227	2211	AM_RANGE(0x000f0000, 0x000f7fff) AM_RAM //READWRITE(SMH_BANK(12),SMH_BANK(12))
2228	2212	AM_RANGE(0x000f8000, 0x000fffff) AM_READ_BANK("bank11") AM_WRITE_BANK("bank12")
2229		//  AM_RANGE(0x00100000, 0x005fffff) AM_RAM  // some extra RAM - the Marty has 6MB RAM (not upgradable)
2230	2213	//  AM_RANGE(0x00680000, 0x0087ffff) AM_ROM AM_REGION("user",0x280000)  // EX ROM
2231		AM_RANGE(0x00a00000, 0x00a7ffff) AM_READWRITE8(towns_gfx_high_r,towns_gfx_high_w,0xffffffff) AM_MIRROR(0x180000) // VRAM
	2214	AM_RANGE(0x00a00000, 0x00a7ffff) AM_READWRITE8(towns_gfx_high_r,towns_gfx_high_w,0xffff) AM_MIRROR(0x180000) // VRAM
2232	2215	AM_RANGE(0x00b00000, 0x00b7ffff) AM_ROM AM_REGION("user",0x180000)  // FONT
2233		AM_RANGE(0x00c00000, 0x00c1ffff) AM_READWRITE8(towns_spriteram_r,towns_spriteram_w,0xffffffff) // Sprite RAM
	2216	AM_RANGE(0x00c00000, 0x00c1ffff) AM_READWRITE8(towns_spriteram_r,towns_spriteram_w,0xffff) // Sprite RAM
2234	2217	AM_RANGE(0x00d00000, 0x00dfffff) AM_RAM // IC Memory Card
2235	2218	AM_RANGE(0x00e00000, 0x00e7ffff) AM_ROM AM_REGION("user",0x000000)  // OS
2236	2219	AM_RANGE(0x00e80000, 0x00efffff) AM_ROM AM_REGION("user",0x100000)  // DIC ROM
2237	2220	AM_RANGE(0x00f00000, 0x00f7ffff) AM_ROM AM_REGION("user",0x180000)  // FONT
2238		AM_RANGE(0x00f80000, 0x00f8ffff) AM_DEVREADWRITE8("pcm", rf5c68_device, rf5c68_mem_r, rf5c68_mem_w, 0xffffffff)  // WAVE RAM
	2221	AM_RANGE(0x00f80000, 0x00f8ffff) AM_DEVREADWRITE8("pcm", rf5c68_device, rf5c68_mem_r, rf5c68_mem_w, 0xffff)  // WAVE RAM
2239	2222	AM_RANGE(0x00fc0000, 0x00ffffff) AM_ROM AM_REGION("user",0x200000)  // SYSTEM ROM
2240	2223	AM_RANGE(0xfffc0000, 0xffffffff) AM_ROM AM_REGION("user",0x200000)  // SYSTEM ROM
2241	2224	ADDRESS_MAP_END
r21845	r21846
2253	2236	AM_RANGE(0x0068,0x006b) AM_READWRITE8(towns_intervaltimer2_r, towns_intervaltimer2_w, 0xffffffff)
2254	2237	AM_RANGE(0x006c,0x006f) AM_READWRITE8(towns_sys6c_r,towns_sys6c_w, 0x000000ff)
2255	2238	// 0x0070/0x0080 - CMOS RTC
2256		AM_RANGE(0x0070,0x0073) AM_READWRITE(towns_rtc_r,towns_rtc_w)
2257		AM_RANGE(0x0080,0x0083) AM_WRITE(towns_rtc_select_w)
	2239	AM_RANGE(0x0070,0x0073) AM_READWRITE8(towns_rtc_r,towns_rtc_w,0x000000ff)
	2240	AM_RANGE(0x0080,0x0083) AM_WRITE8(towns_rtc_select_w,0x000000ff)
2258	2241	// DMA controllers (uPD71071)
2259	2242	AM_RANGE(0x00a0,0x00af) AM_READWRITE8(towns_dma1_r, towns_dma1_w, 0xffffffff)
2260	2243	AM_RANGE(0x00b0,0x00bf) AM_READWRITE8(towns_dma2_r, towns_dma2_w, 0xffffffff)
2261	2244	// Floppy controller
2262	2245	AM_RANGE(0x0200,0x020f) AM_READWRITE8(towns_floppy_r, towns_floppy_w, 0xffffffff)
2263	2246	// CRTC / Video
2264		AM_RANGE(0x0400,0x0403) AM_READ(towns_video_unknown_r)  // R/O (0x400)
2265		AM_RANGE(0x0404,0x0407) AM_READWRITE(towns_video_404_r, towns_video_404_w)  // R/W (0x404)
	2247	AM_RANGE(0x0400,0x0403) AM_READ8(towns_video_unknown_r, 0x000000ff)  // R/O (0x400)
	2248	AM_RANGE(0x0404,0x0407) AM_READWRITE8(towns_video_404_r, towns_video_404_w, 0x000000ff)  // R/W (0x404)
2266	2249	AM_RANGE(0x0440,0x045f) AM_READWRITE8(towns_video_440_r, towns_video_440_w, 0xffffffff)
2267	2250	// System port
2268	2251	AM_RANGE(0x0480,0x0483) AM_READWRITE8(towns_sys480_r,towns_sys480_w,0x000000ff)  // R/W (0x480)
2269	2252	// CD-ROM
2270	2253	AM_RANGE(0x04c0,0x04cf) AM_READWRITE8(towns_cdrom_r,towns_cdrom_w,0x00ff00ff)
2271	2254	// Joystick / Mouse ports
2272		AM_RANGE(0x04d0,0x04d3) AM_READ(towns_padport_r)
2273		AM_RANGE(0x04d4,0x04d7) AM_WRITE(towns_pad_mask_w)
	2255	AM_RANGE(0x04d0,0x04d3) AM_READ8(towns_padport_r, 0x00ff00ff)
	2256	AM_RANGE(0x04d4,0x04d7) AM_WRITE8(towns_pad_mask_w, 0x00ff0000)
2274	2257	// Sound (YM3438 [FM], RF5c68 [PCM])
2275	2258	AM_RANGE(0x04d8,0x04df) AM_DEVREADWRITE8_LEGACY("fm",ym3438_r,ym3438_w,0x00ff00ff)
2276	2259	AM_RANGE(0x04e0,0x04e3) AM_READWRITE8(towns_volume_r,towns_volume_w,0xffffffff)  // R/W  -- volume ports
r21845	r21846
2279	2262	// CRTC / Video
2280	2263	AM_RANGE(0x05c8,0x05cb) AM_READWRITE8(towns_video_5c8_r, towns_video_5c8_w, 0xffffffff)
2281	2264	// System ports
2282		AM_RANGE(0x05e8,0x05ef) AM_READWRITE(towns_sys5e8_r, towns_sys5e8_w)
	2265	AM_RANGE(0x05e8,0x05ef) AM_READWRITE8(towns_sys5e8_r, towns_sys5e8_w, 0x00ff00ff)
2283	2266	// Keyboard (8042 MCU)
2284	2267	AM_RANGE(0x0600,0x0607) AM_READWRITE8(towns_keyboard_r, towns_keyboard_w,0x00ff00ff)
2285	2268	// SCSI controller
r21845	r21846
2291	2274	// CRTC / Video (again)
2292	2275	AM_RANGE(0xfd90,0xfda3) AM_READWRITE8(towns_video_fd90_r, towns_video_fd90_w, 0xffffffff)
2293	2276	AM_RANGE(0xff80,0xffff) AM_READWRITE8(towns_video_cff80_r,towns_video_cff80_w,0xffffffff)
	2277	ADDRESS_MAP_END
2294	2278
	2279	static ADDRESS_MAP_START( towns16_io , AS_IO, 16, towns_state)  // for the 386SX based systems
	2280	// System ports
	2281	ADDRESS_MAP_UNMAP_HIGH
	2282	AM_RANGE(0x0000,0x0003) AM_DEVREADWRITE8_LEGACY("pic8259_master", pic8259_r, pic8259_w, 0x00ff)
	2283	AM_RANGE(0x0010,0x0013) AM_DEVREADWRITE8_LEGACY("pic8259_slave", pic8259_r, pic8259_w, 0x00ff)
	2284	AM_RANGE(0x0020,0x0033) AM_READWRITE8(towns_system_r,towns_system_w, 0xffff)
	2285	AM_RANGE(0x0040,0x0047) AM_DEVREADWRITE8_LEGACY("pit",pit8253_r, pit8253_w, 0x00ff)
	2286	AM_RANGE(0x0050,0x0057) AM_DEVREADWRITE8_LEGACY("pit2",pit8253_r, pit8253_w, 0x00ff)
	2287	AM_RANGE(0x0060,0x0061) AM_READWRITE8(towns_port60_r, towns_port60_w, 0x00ff)
	2288	AM_RANGE(0x0068,0x006b) AM_READWRITE8(towns_intervaltimer2_r, towns_intervaltimer2_w, 0xffff)
	2289	AM_RANGE(0x006c,0x006d) AM_READWRITE8(towns_sys6c_r,towns_sys6c_w, 0x00ff)
	2290	// 0x0070/0x0080 - CMOS RTC
	2291	AM_RANGE(0x0070,0x0071) AM_READWRITE8(towns_rtc_r,towns_rtc_w,0x00ff)
	2292	AM_RANGE(0x0080,0x0081) AM_WRITE8(towns_rtc_select_w,0x00ff)
	2293	// DMA controllers (uPD71071)
	2294	AM_RANGE(0x00a0,0x00af) AM_READWRITE8(towns_dma1_r, towns_dma1_w, 0xffff)
	2295	AM_RANGE(0x00b0,0x00bf) AM_READWRITE8(towns_dma2_r, towns_dma2_w, 0xffff)
	2296	// Floppy controller
	2297	AM_RANGE(0x0200,0x020f) AM_READWRITE8(towns_floppy_r, towns_floppy_w, 0xffff)
	2298	// CRTC / Video
	2299	AM_RANGE(0x0400,0x0401) AM_READ8(towns_video_unknown_r, 0x00ff)  // R/O (0x400)
	2300	AM_RANGE(0x0404,0x0407) AM_READWRITE8(towns_video_404_r, towns_video_404_w, 0xffff)  // R/W (0x404)
	2301	AM_RANGE(0x0440,0x045f) AM_READWRITE8(towns_video_440_r, towns_video_440_w, 0xffff)
	2302	// System port
	2303	AM_RANGE(0x0480,0x0481) AM_READWRITE8(towns_sys480_r,towns_sys480_w,0x00ff)  // R/W (0x480)
	2304	// CD-ROM
	2305	AM_RANGE(0x04c0,0x04cf) AM_READWRITE8(towns_cdrom_r,towns_cdrom_w,0x00ff)
	2306	// Joystick / Mouse ports
	2307	AM_RANGE(0x04d0,0x04d3) AM_READ8(towns_padport_r, 0x00ff)
	2308	AM_RANGE(0x04d6,0x04d7) AM_WRITE8(towns_pad_mask_w, 0x00ff)
	2309	// Sound (YM3438 [FM], RF5c68 [PCM])
	2310	AM_RANGE(0x04d8,0x04df) AM_DEVREADWRITE8_LEGACY("fm",ym3438_r,ym3438_w,0x00ff)
	2311	AM_RANGE(0x04e0,0x04e3) AM_READWRITE8(towns_volume_r,towns_volume_w,0xffff)  // R/W  -- volume ports
	2312	AM_RANGE(0x04e8,0x04ef) AM_READWRITE8(towns_sound_ctrl_r,towns_sound_ctrl_w,0xffff)
	2313	AM_RANGE(0x04f0,0x04fb) AM_DEVWRITE8("pcm", rf5c68_device, rf5c68_w, 0xffff)
	2314	// CRTC / Video
	2315	AM_RANGE(0x05c8,0x05cb) AM_READWRITE8(towns_video_5c8_r, towns_video_5c8_w, 0xffff)
	2316	// System ports
	2317	AM_RANGE(0x05e8,0x05ef) AM_READWRITE8(towns_sys5e8_r, towns_sys5e8_w, 0x00ff)
	2318	// Keyboard (8042 MCU)
	2319	AM_RANGE(0x0600,0x0607) AM_READWRITE8(towns_keyboard_r, towns_keyboard_w,0x00ff)
	2320	// SCSI controller
	2321	AM_RANGE(0x0c30,0x0c37) AM_DEVREADWRITE8("scsi:fm",fmscsi_device,fmscsi_r,fmscsi_w,0x00ff)
	2322	// CMOS
	2323	AM_RANGE(0x3000,0x4fff) AM_READWRITE8(towns_cmos_r, towns_cmos_w,0x00ff)
	2324	// Something (MS-DOS wants this 0x41ff to be 1)
	2325	//AM_RANGE(0x41fc,0x41ff) AM_READ8(towns_41ff_r,0xff000000)
	2326	// CRTC / Video (again)
	2327	AM_RANGE(0xfd90,0xfda3) AM_READWRITE8(towns_video_fd90_r, towns_video_fd90_w, 0xffff)
	2328	AM_RANGE(0xff80,0xffff) AM_READWRITE8(towns_video_cff80_r,towns_video_cff80_w,0xffff)
2295	2329	ADDRESS_MAP_END
2296	2330
2297	2331	/* Input ports */
r21845	r21846
2830	2864	MCFG_UPD71071_ADD("dma_1",towns_dma_config)
2831	2865	MCFG_UPD71071_ADD("dma_2",towns_dma_config)
2832	2866
2833		MCFG_NVRAM_ADD_0FILL("nvram")
2834
2835	2867	//MCFG_VIDEO_START_OVERRIDE(towns_state,towns)
2836	2868
2837	2869	/* internal ram */
r21845	r21846
2841	2873	MACHINE_CONFIG_END
2842	2874
2843	2875	static MACHINE_CONFIG_START( towns, towns_state )
2844
2845	2876	MCFG_FRAGMENT_ADD(towns_base)
2846
	2877	MCFG_NVRAM_ADD_0FILL("nvram")
2847	2878	MACHINE_CONFIG_END
2848	2879
2849		static MACHINE_CONFIG_DERIVED( townsux, towns )
	2880	static MACHINE_CONFIG_START( townsux, towns16_state )
	2881	MCFG_FRAGMENT_ADD(towns_base)
2850	2882
2851		MCFG_CPU_REPLACE("maincpu",I386, 16000000)
	2883	MCFG_CPU_REPLACE("maincpu",I386SX, 16000000)
2852	2884	MCFG_CPU_PROGRAM_MAP(ux_mem)
2853		MCFG_CPU_IO_MAP(towns_io)
	2885	MCFG_CPU_IO_MAP(towns16_io)
2854	2886	MCFG_CPU_VBLANK_INT_DRIVER("screen", towns_state,  towns_vsync_irq)
2855	2887
2856	2888	MCFG_RAM_MODIFY(RAM_TAG)
2857	2889	MCFG_RAM_DEFAULT_SIZE("2M")
2858	2890	MCFG_RAM_EXTRA_OPTIONS("10M")
	2891
	2892	MCFG_NVRAM_ADD_0FILL("nvram16")
2859	2893	MACHINE_CONFIG_END
2860	2894
2861	2895	static MACHINE_CONFIG_DERIVED( townssj, towns )
r21845	r21846
2871	2905	MACHINE_CONFIG_END
2872	2906
2873	2907	static MACHINE_CONFIG_DERIVED( townshr, towns )
2874
2875	2908	MCFG_CPU_REPLACE("maincpu",I486, 20000000)
2876	2909	MCFG_CPU_PROGRAM_MAP(towns_mem)
2877	2910	MCFG_CPU_IO_MAP(towns_io)
r21845	r21846
2885	2918	static MACHINE_CONFIG_START( marty, marty_state )
2886	2919	MCFG_FRAGMENT_ADD(towns_base)
2887	2920
2888		MCFG_CPU_REPLACE("maincpu",I386, 16000000)
	2921	MCFG_CPU_REPLACE("maincpu",I386SX, 16000000)
2889	2922	MCFG_CPU_PROGRAM_MAP(marty_mem)
2890		MCFG_CPU_IO_MAP(towns_io)
	2923	MCFG_CPU_IO_MAP(towns16_io)
2891	2924	MCFG_CPU_VBLANK_INT_DRIVER("screen", towns_state,  towns_vsync_irq)
2892	2925
2893	2926	MCFG_RAM_MODIFY(RAM_TAG)
2894	2927	MCFG_RAM_DEFAULT_SIZE("6M")
	2928
	2929	MCFG_NVRAM_ADD_0FILL("nvram16")
2895	2930	MACHINE_CONFIG_END
2896	2931
2897	2932	/* ROM definitions */

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