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r12866 Friday 16th September, 2011 at 14:09:06 UTC by Angelo Salese
uPD7220: fixed allocation bug

[src/mess/drivers]	vt240.c
[src/mess/video]	upd7220.c upd7220.h

src/mess/video/upd7220.c

r12865	r12866
737	737
738	738	// find screen
739	739	m_screen = machine().device<screen_device>(m_screen_tag);
	740	m_vram = auto_alloc_array_clear(machine(), UINT8, 1 << 18);
740	741
741	742	// register for state saving
742	743	save_item(NAME(m_ra));

src/mess/video/upd7220.h

r12865	r12866
220	220	emu_timer *m_hsync_timer;      // horizontal sync timer
221	221	emu_timer *m_blank_timer;      // CRT blanking timer
222	222
223		UINT8 m_vram[0x40000];
	223	UINT8 *m_vram;
224	224	UINT32 m_vram_bank;
225	225
226	226	UINT8 m_bitmap_mod;

src/mess/drivers/vt240.c

r12865	r12866
17	17	#include "cpu/i8085/i8085.h"
18	18	#include "cpu/t11/t11.h"
19	19	#include "machine/ram.h"
	20	#include "video/upd7220.h"
20	21
	22	#define VIDEO_START_MEMBER(name) void name::video_start()
	23	#define SCREEN_UPDATE_MEMBER(name) bool name::screen_update(screen_device &screen, bitmap_t &bitmap, const rectangle &cliprect)
21	24
22	25	class vt240_state : public driver_device
23	26	{
24	27	public:
25	28	vt240_state(const machine_config &mconfig, device_type type, const char *tag)
26		: driver_device(mconfig, type, tag) { }
	29	: driver_device(mconfig, type, tag),
	30	m_hgdc(*this, "upd7220")
	31	{ }
27	32
28		DECLARE_READ8_MEMBER(v240_00_r);
	33	required_device<upd7220_device> m_hgdc;
	34
	35	virtual void video_start();
	36	virtual bool screen_update(screen_device &screen, bitmap_t &bitmap, const rectangle &cliprect);
29	37	};
30	38
	39	/* TODO */
	40	static UPD7220_DRAW_TEXT_LINE( hgdc_draw_text )
	41	{
	42	//vt240_state *state = device->machine().driver_data<a5105_state>();
	43	//int x;
	44	//int xi,yi;
	45	//int tile,color;
	46	//UINT8 tile_data;
31	47
32		READ8_MEMBER( vt240_state::v240_00_r )
	48	#if 0
	49	for( x = 0; x < pitch; x++ )
	50	{
	51	tile = (vram[(addr+x)*2] & 0xff);
	52	color = (vram[(addr+x)*2+1] & 0x0f);
	53
	54	for( yi = 0; yi < lr; yi++)
	55	{
	56	tile_data = state->m_char_rom[(tile*8+yi) & 0x7ff];
	57
	58	if(cursor_on && cursor_addr == addr+x) //TODO
	59	tile_data^=0xff;
	60
	61	for( xi = 0; xi < 8; xi++)
	62	{
	63	int res_x,res_y;
	64	int pen = (tile_data >> xi) & 1 ? color : 0;
	65
	66	if(yi >= 8) { pen = 0; }
	67
	68	res_x = x * 8 + xi;
	69	res_y = y * lr + yi;
	70
	71	if(res_x > screen_max_x || res_y > screen_max_y)
	72	continue;
	73
	74	*BITMAP_ADDR16(bitmap, res_y, res_x) = pen;
	75	}
	76	}
	77	}
	78	#endif
	79	}
	80
	81
	82	VIDEO_START_MEMBER( vt240_state )
33	83	{
34		return 4 | (machine().rand() & 0x20);
	84	// find memory regions
	85	//m_char_rom = machine().region("pcg")->base();
	86
	87	VIDEO_START_NAME(generic_bitmapped)(machine());
35	88	}
36	89
	90	SCREEN_UPDATE_MEMBER( vt240_state )
	91	{
	92	/* graphics */
	93	m_hgdc->update_screen(&bitmap, &cliprect);
	94
	95	return 0;
	96	}
	97
	98
	99
37	100	static ADDRESS_MAP_START(vt240_mem, AS_PROGRAM, 8, vt240_state)
38	101	ADDRESS_MAP_UNMAP_HIGH
39	102	AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("ipl", 0)
r12865	r12866
44	107	static ADDRESS_MAP_START(vt240_io, AS_IO, 8, vt240_state)
45	108	ADDRESS_MAP_UNMAP_HIGH
46	109	ADDRESS_MAP_GLOBAL_MASK(0xff)
47		AM_RANGE(0x00, 0x00) AM_READ(v240_00_r)
	110	AM_RANGE(0x00, 0x01) AM_DEVREADWRITE("upd7220", upd7220_device, read, write)
48	111	ADDRESS_MAP_END
49	112
	113
	114	static ADDRESS_MAP_START( upd7220_map, AS_0, 8, vt240_state)
	115	AM_RANGE(0x00000, 0x3ffff) AM_DEVREADWRITE("upd7220", upd7220_device, vram_r, vram_w)
	116	ADDRESS_MAP_END
	117
50	118	/* Input ports */
51	119	static INPUT_PORTS_START( vt240 )
52	120	INPUT_PORTS_END
r12865	r12866
56	124	{
57	125	}
58	126
59		static VIDEO_START( vt240 )
	127	static UPD7220_INTERFACE( hgdc_intf )
60	128	{
61		}
	129	"screen",
	130	NULL,
	131	hgdc_draw_text,
	132	DEVCB_NULL,
	133	DEVCB_NULL,
	134	DEVCB_NULL
	135	};
62	136
63		static SCREEN_UPDATE( vt240 )
	137	static INTERRUPT_GEN( vt240_irq )
64	138	{
65		return 0;
	139	device_set_input_line(device, I8085_RST65_LINE, ASSERT_LINE);
	140	device_set_input_line(device, I8085_RST65_LINE, CLEAR_LINE);
66	141	}
67	142
68	143	static MACHINE_CONFIG_START( vt240, vt240_state )
r12865	r12866
70	145	MCFG_CPU_ADD("maincpu", I8085A, XTAL_16MHz / 4)
71	146	MCFG_CPU_PROGRAM_MAP(vt240_mem)
72	147	MCFG_CPU_IO_MAP(vt240_io)
	148	MCFG_CPU_VBLANK_INT("screen",vt240_irq)
73	149
74	150	MCFG_MACHINE_RESET(vt240)
75	151
r12865	r12866
80	156	MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
81	157	MCFG_SCREEN_SIZE(640, 480)
82	158	MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
83		MCFG_VIDEO_START(vt240)
84		MCFG_SCREEN_UPDATE(vt240)
85		MCFG_PALETTE_LENGTH(2)
86		MCFG_PALETTE_INIT(black_and_white)
	159	//   MCFG_VIDEO_START(vt240)
	160	//   MCFG_SCREEN_UPDATE(vt240)
	161	MCFG_PALETTE_LENGTH(8)
	162	//MCFG_PALETTE_INIT(black_and_white)
	163
	164	MCFG_UPD7220_ADD("upd7220", XTAL_4MHz, hgdc_intf, upd7220_map) //unknown clock
87	165	MACHINE_CONFIG_END
88	166
89	167	/* ROM definition */

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