mirror of
https://github.com/holub/mame
synced 2025-04-22 00:11:58 +03:00
Gyruss: Tilemap conversion, sprite multiplexing done properly, driver clean-up
This commit is contained in:
Zsolt Vasvari
parent
1a0ccf8101
commit
75a0723116
@ -56,21 +56,22 @@ and 1 SFX channel controlled by an 8039:
|
||||
***************************************************************************/
|
||||
|
||||
#include "driver.h"
|
||||
#include "deprecat.h"
|
||||
#include "cpu/i8039/i8039.h"
|
||||
#include "sound/ay8910.h"
|
||||
#include "sound/dac.h"
|
||||
|
||||
|
||||
void konami1_decode_cpu2(void);
|
||||
extern UINT8 *gyruss_videoram;
|
||||
extern UINT8 *gyruss_colorram;
|
||||
extern UINT8 *gyruss_spriteram;
|
||||
extern UINT8 *gyruss_flipscreen;
|
||||
|
||||
WRITE8_HANDLER( gyruss_flipscreen_w );
|
||||
void konami1_decode_cpu2(void);
|
||||
WRITE8_HANDLER( gyruss_spriteram_w );
|
||||
READ8_HANDLER( gyruss_scanline_r );
|
||||
VIDEO_START( gyruss );
|
||||
PALETTE_INIT( gyruss );
|
||||
VIDEO_UPDATE( gyruss );
|
||||
INTERRUPT_GEN( gyruss_6809_interrupt );
|
||||
|
||||
|
||||
READ8_HANDLER( gyruss_portA_r );
|
||||
WRITE8_HANDLER( gyruss_filter0_w );
|
||||
@ -79,100 +80,70 @@ WRITE8_HANDLER( gyruss_sh_irqtrigger_w );
|
||||
WRITE8_HANDLER( gyruss_i8039_irq_w );
|
||||
|
||||
|
||||
static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM)
|
||||
AM_RANGE(0x8000, 0x87ff) AM_READ(MRA8_RAM)
|
||||
AM_RANGE(0x9000, 0x9fff) AM_READ(MRA8_RAM)
|
||||
AM_RANGE(0xa000, 0xa7ff) AM_READ(MRA8_RAM) AM_SHARE(1)
|
||||
AM_RANGE(0xc000, 0xc000) AM_READ(input_port_4_r) /* DSW1 */
|
||||
AM_RANGE(0xc080, 0xc080) AM_READ(input_port_0_r) /* IN0 */
|
||||
AM_RANGE(0xc0a0, 0xc0a0) AM_READ(input_port_1_r) /* IN1 */
|
||||
AM_RANGE(0xc0c0, 0xc0c0) AM_READ(input_port_2_r) /* IN2 */
|
||||
AM_RANGE(0xc0e0, 0xc0e0) AM_READ(input_port_3_r) /* DSW0 */
|
||||
AM_RANGE(0xc100, 0xc100) AM_READ(input_port_5_r) /* DSW2 */
|
||||
static ADDRESS_MAP_START( main_cpu1_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x7fff) AM_ROM
|
||||
AM_RANGE(0x8000, 0x83ff) AM_RAM AM_BASE(&gyruss_colorram)
|
||||
AM_RANGE(0x8400, 0x87ff) AM_RAM AM_BASE(&gyruss_videoram)
|
||||
AM_RANGE(0x9000, 0x9fff) AM_RAM
|
||||
AM_RANGE(0xa000, 0xa7ff) AM_RAM AM_SHARE(1)
|
||||
AM_RANGE(0xc000, 0xc000) AM_READWRITE(input_port_4_r, MWA8_NOP) /* watchdog reset */
|
||||
AM_RANGE(0xc080, 0xc080) AM_READWRITE(input_port_0_r, gyruss_sh_irqtrigger_w)
|
||||
AM_RANGE(0xc0a0, 0xc0a0) AM_READ(input_port_1_r)
|
||||
AM_RANGE(0xc0c0, 0xc0c0) AM_READ(input_port_2_r)
|
||||
AM_RANGE(0xc0e0, 0xc0e0) AM_READ(input_port_3_r)
|
||||
AM_RANGE(0xc100, 0xc100) AM_READWRITE(input_port_5_r, soundlatch_w)
|
||||
AM_RANGE(0xc180, 0xc180) AM_WRITE(interrupt_enable_w)
|
||||
AM_RANGE(0xc185, 0xc185) AM_WRITE(MWA8_RAM) AM_BASE(&gyruss_flipscreen)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x7fff) AM_WRITE(MWA8_ROM) /* rom space+1 */
|
||||
AM_RANGE(0x8000, 0x83ff) AM_WRITE(MWA8_RAM) AM_BASE(&colorram)
|
||||
AM_RANGE(0x8400, 0x87ff) AM_WRITE(MWA8_RAM) AM_BASE(&videoram) AM_SIZE(&videoram_size)
|
||||
AM_RANGE(0x9000, 0x9fff) AM_WRITE(MWA8_RAM)
|
||||
AM_RANGE(0xa000, 0xa7ff) AM_WRITE(MWA8_RAM) AM_SHARE(1)
|
||||
AM_RANGE(0xc000, 0xc000) AM_WRITE(MWA8_NOP) /* watchdog reset */
|
||||
AM_RANGE(0xc080, 0xc080) AM_WRITE(gyruss_sh_irqtrigger_w)
|
||||
AM_RANGE(0xc100, 0xc100) AM_WRITE(soundlatch_w) /* command to soundb */
|
||||
AM_RANGE(0xc180, 0xc180) AM_WRITE(interrupt_enable_w) /* NMI enable */
|
||||
AM_RANGE(0xc185, 0xc185) AM_WRITE(gyruss_flipscreen_w)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( m6809_readmem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
static ADDRESS_MAP_START( main_cpu2_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x0000) AM_READ(gyruss_scanline_r)
|
||||
AM_RANGE(0x4000, 0x47ff) AM_READ(MRA8_RAM)
|
||||
AM_RANGE(0x6000, 0x67ff) AM_READ(MRA8_RAM) AM_SHARE(1)
|
||||
AM_RANGE(0xe000, 0xffff) AM_READ(MRA8_ROM)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( m6809_writemem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x2000, 0x2000) AM_WRITE(interrupt_enable_w)
|
||||
AM_RANGE(0x4000, 0x47ff) AM_WRITE(MWA8_RAM)
|
||||
AM_RANGE(0x4040, 0x40ff) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
|
||||
AM_RANGE(0x6000, 0x67ff) AM_WRITE(MWA8_RAM) AM_SHARE(1)
|
||||
AM_RANGE(0xe000, 0xffff) AM_WRITE(MWA8_ROM)
|
||||
AM_RANGE(0x4000, 0x403f) AM_RAM
|
||||
AM_RANGE(0x4040, 0x40ff) AM_READWRITE(MRA8_RAM, gyruss_spriteram_w) AM_BASE(&gyruss_spriteram)
|
||||
AM_RANGE(0x4100, 0x47ff) AM_RAM
|
||||
AM_RANGE(0x6000, 0x67ff) AM_RAM AM_SHARE(1)
|
||||
AM_RANGE(0xe000, 0xffff) AM_ROM
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x5fff) AM_READ(MRA8_ROM) /* rom soundboard */
|
||||
AM_RANGE(0x6000, 0x63ff) AM_READ(MRA8_RAM) /* ram soundboard */
|
||||
static ADDRESS_MAP_START( audio_cpu1_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x5fff) AM_ROM
|
||||
AM_RANGE(0x6000, 0x63ff) AM_RAM
|
||||
AM_RANGE(0x8000, 0x8000) AM_READ(soundlatch_r)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x5fff) AM_WRITE(MWA8_ROM) /* rom soundboard */
|
||||
AM_RANGE(0x6000, 0x63ff) AM_WRITE(MWA8_RAM) /* ram soundboard */
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( sound_readport, ADDRESS_SPACE_IO, 8 )
|
||||
ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
|
||||
AM_RANGE(0x01, 0x01) AM_READ(AY8910_read_port_0_r)
|
||||
AM_RANGE(0x05, 0x05) AM_READ(AY8910_read_port_1_r)
|
||||
AM_RANGE(0x09, 0x09) AM_READ(AY8910_read_port_2_r)
|
||||
AM_RANGE(0x0d, 0x0d) AM_READ(AY8910_read_port_3_r)
|
||||
AM_RANGE(0x11, 0x11) AM_READ(AY8910_read_port_4_r)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( sound_writeport, ADDRESS_SPACE_IO, 8 )
|
||||
static ADDRESS_MAP_START( audio_cpu1_io_map, ADDRESS_SPACE_IO, 8 )
|
||||
ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
|
||||
AM_RANGE(0x00, 0x00) AM_WRITE(AY8910_control_port_0_w)
|
||||
AM_RANGE(0x01, 0x01) AM_READ(AY8910_read_port_0_r)
|
||||
AM_RANGE(0x02, 0x02) AM_WRITE(AY8910_write_port_0_w)
|
||||
AM_RANGE(0x04, 0x04) AM_WRITE(AY8910_control_port_1_w)
|
||||
AM_RANGE(0x05, 0x05) AM_READ(AY8910_read_port_1_r)
|
||||
AM_RANGE(0x06, 0x06) AM_WRITE(AY8910_write_port_1_w)
|
||||
AM_RANGE(0x08, 0x08) AM_WRITE(AY8910_control_port_2_w)
|
||||
AM_RANGE(0x09, 0x09) AM_READ(AY8910_read_port_2_r)
|
||||
AM_RANGE(0x0a, 0x0a) AM_WRITE(AY8910_write_port_2_w)
|
||||
AM_RANGE(0x0c, 0x0c) AM_WRITE(AY8910_control_port_3_w)
|
||||
AM_RANGE(0x0d, 0x0d) AM_READ(AY8910_read_port_3_r)
|
||||
AM_RANGE(0x0e, 0x0e) AM_WRITE(AY8910_write_port_3_w)
|
||||
AM_RANGE(0x10, 0x10) AM_WRITE(AY8910_control_port_4_w)
|
||||
AM_RANGE(0x11, 0x11) AM_READ(AY8910_read_port_4_r)
|
||||
AM_RANGE(0x12, 0x12) AM_WRITE(AY8910_write_port_4_w)
|
||||
AM_RANGE(0x14, 0x14) AM_WRITE(gyruss_i8039_irq_w)
|
||||
AM_RANGE(0x18, 0x18) AM_WRITE(soundlatch2_w)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( i8039_readmem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x0fff) AM_READ(MRA8_ROM)
|
||||
static ADDRESS_MAP_START( audio_cpu2_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x0fff) AM_ROM
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( i8039_writemem, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x0000, 0x0fff) AM_WRITE(MWA8_ROM)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( i8039_readport, ADDRESS_SPACE_IO, 8 )
|
||||
static ADDRESS_MAP_START( audio_cpu2_io_map, ADDRESS_SPACE_IO, 8 )
|
||||
AM_RANGE(0x00, 0xff) AM_READ(soundlatch2_r)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( i8039_writeport, ADDRESS_SPACE_IO, 8 )
|
||||
AM_RANGE(I8039_p1, I8039_p1) AM_WRITE(DAC_0_data_w)
|
||||
AM_RANGE(I8039_p2, I8039_p2) AM_WRITE(MWA8_NOP)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
|
||||
#define GYRUSS_COMMON\
|
||||
PORT_START_TAG("IN0")\
|
||||
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )\
|
||||
@ -235,7 +206,7 @@ ADDRESS_MAP_END
|
||||
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
|
||||
|
||||
static INPUT_PORTS_START( gyruss )
|
||||
GYRUSS_COMMON
|
||||
GYRUSS_COMMON
|
||||
|
||||
PORT_START_TAG("DSW1")
|
||||
PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
|
||||
@ -272,7 +243,7 @@ INPUT_PORTS_END
|
||||
/* This is identical to gyruss except for the bonus that has different
|
||||
values */
|
||||
static INPUT_PORTS_START( gyrussce )
|
||||
GYRUSS_COMMON
|
||||
GYRUSS_COMMON
|
||||
|
||||
PORT_START_TAG("DSW1")
|
||||
PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
|
||||
@ -317,6 +288,7 @@ static const gfx_layout charlayout =
|
||||
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
|
||||
16*8 /* every char takes 16 consecutive bytes */
|
||||
};
|
||||
|
||||
static const gfx_layout spritelayout =
|
||||
{
|
||||
8,16, /* 8*16 sprites */
|
||||
@ -330,7 +302,6 @@ static const gfx_layout spritelayout =
|
||||
};
|
||||
|
||||
|
||||
|
||||
static GFXDECODE_START( gyruss )
|
||||
GFXDECODE_ENTRY( REGION_GFX1, 0x0000, spritelayout, 0, 16 ) /* upper half */
|
||||
GFXDECODE_ENTRY( REGION_GFX1, 0x0010, spritelayout, 0, 16 ) /* lower half */
|
||||
@ -338,7 +309,6 @@ static GFXDECODE_START( gyruss )
|
||||
GFXDECODE_END
|
||||
|
||||
|
||||
|
||||
static const struct AY8910interface ay8910_interface_1 =
|
||||
{
|
||||
0,
|
||||
@ -366,22 +336,22 @@ static MACHINE_DRIVER_START( gyruss )
|
||||
|
||||
/* basic machine hardware */
|
||||
MDRV_CPU_ADD(Z80, 3072000) /* 3.072 MHz (?) */
|
||||
MDRV_CPU_PROGRAM_MAP(readmem,writemem)
|
||||
MDRV_CPU_PROGRAM_MAP(main_cpu1_map,0)
|
||||
MDRV_CPU_VBLANK_INT("main", nmi_line_pulse)
|
||||
|
||||
MDRV_CPU_ADD(M6809, 2000000) /* 2 MHz ??? */
|
||||
MDRV_CPU_PROGRAM_MAP(m6809_readmem,m6809_writemem)
|
||||
MDRV_CPU_VBLANK_INT_HACK(gyruss_6809_interrupt,256)
|
||||
MDRV_CPU_PROGRAM_MAP(main_cpu2_map,0)
|
||||
MDRV_CPU_VBLANK_INT("main", irq0_line_hold)
|
||||
|
||||
MDRV_CPU_ADD(Z80,14318180/4)
|
||||
/* audio CPU */ /* 3.579545 MHz */
|
||||
MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)
|
||||
MDRV_CPU_IO_MAP(sound_readport,sound_writeport)
|
||||
MDRV_CPU_PROGRAM_MAP(audio_cpu1_map,0)
|
||||
MDRV_CPU_IO_MAP(audio_cpu1_io_map,0)
|
||||
|
||||
MDRV_CPU_ADD(I8039,8000000)
|
||||
/* audio CPU */ /* 8MHz crystal */
|
||||
MDRV_CPU_PROGRAM_MAP(i8039_readmem,i8039_writemem)
|
||||
MDRV_CPU_IO_MAP(i8039_readport,i8039_writeport)
|
||||
MDRV_CPU_PROGRAM_MAP(audio_cpu2_map,0)
|
||||
MDRV_CPU_IO_MAP(audio_cpu2_io_map,0)
|
||||
|
||||
/* video hardware */
|
||||
MDRV_SCREEN_ADD("main", RASTER)
|
||||
|
||||
@ -7,18 +7,15 @@
|
||||
***************************************************************************/
|
||||
|
||||
#include "driver.h"
|
||||
#include "deprecat.h"
|
||||
#include "video/resnet.h"
|
||||
|
||||
|
||||
static UINT8 flipscreen;
|
||||
UINT8 *gyruss_videoram;
|
||||
UINT8 *gyruss_colorram;
|
||||
UINT8 *gyruss_spriteram;
|
||||
UINT8 *gyruss_flipscreen;
|
||||
|
||||
/*
|
||||
sprites are multiplexed, so we have to buffer the spriteram
|
||||
scanline by scanline.
|
||||
*/
|
||||
static UINT8 *sprite_mux_buffer;
|
||||
static UINT32 scanline;
|
||||
static tilemap *gyruss_tilemap;
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
@ -39,18 +36,19 @@ static UINT32 scanline;
|
||||
bit 0 -- 1 kohm resistor -- RED
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
PALETTE_INIT( gyruss )
|
||||
{
|
||||
static const int resistances_rg[3] = { 1000, 470, 220 };
|
||||
static const int resistances_b [2] = { 470, 220 };
|
||||
double rweights[3], gweights[3], bweights[2];
|
||||
double weights_rg[3], weights_b[2];
|
||||
int i;
|
||||
|
||||
/* compute the color output resistor weights */
|
||||
compute_resistor_weights(0, 255, -1.0,
|
||||
3, &resistances_rg[0], rweights, 470, 0,
|
||||
3, &resistances_rg[0], gweights, 470, 0,
|
||||
2, &resistances_b[0], bweights, 470, 0);
|
||||
3, resistances_rg, weights_rg, 470, 0,
|
||||
2, resistances_b, weights_b, 470, 0,
|
||||
0, 0, 0, 0, 0);
|
||||
|
||||
/* allocate the colortable */
|
||||
machine->colortable = colortable_alloc(machine, 32);
|
||||
@ -65,18 +63,18 @@ PALETTE_INIT( gyruss )
|
||||
bit0 = (color_prom[i] >> 0) & 0x01;
|
||||
bit1 = (color_prom[i] >> 1) & 0x01;
|
||||
bit2 = (color_prom[i] >> 2) & 0x01;
|
||||
r = combine_3_weights(rweights, bit0, bit1, bit2);
|
||||
r = combine_3_weights(weights_rg, bit0, bit1, bit2);
|
||||
|
||||
/* green component */
|
||||
bit0 = (color_prom[i] >> 3) & 0x01;
|
||||
bit1 = (color_prom[i] >> 4) & 0x01;
|
||||
bit2 = (color_prom[i] >> 5) & 0x01;
|
||||
g = combine_3_weights(gweights, bit0, bit1, bit2);
|
||||
g = combine_3_weights(weights_rg, bit0, bit1, bit2);
|
||||
|
||||
/* blue component */
|
||||
bit0 = (color_prom[i] >> 6) & 0x01;
|
||||
bit1 = (color_prom[i] >> 7) & 0x01;
|
||||
b = combine_2_weights(bweights, bit0, bit1);
|
||||
b = combine_2_weights(weights_b, bit0, bit1);
|
||||
|
||||
colortable_palette_set_color(machine->colortable, i, MAKE_RGB(r, g, b));
|
||||
}
|
||||
@ -101,137 +99,72 @@ PALETTE_INIT( gyruss )
|
||||
|
||||
|
||||
|
||||
WRITE8_HANDLER( gyruss_spriteram_w )
|
||||
{
|
||||
video_screen_update_now(0);
|
||||
gyruss_spriteram[offset] = data;
|
||||
}
|
||||
|
||||
|
||||
static TILE_GET_INFO( gyruss_get_tile_info )
|
||||
{
|
||||
int code = ((gyruss_colorram[tile_index] & 0x20) << 3) | gyruss_videoram[tile_index];
|
||||
int color = gyruss_colorram[tile_index] & 0x0f;
|
||||
int flags = TILE_FLIPYX(gyruss_colorram[tile_index] >> 6);
|
||||
|
||||
tileinfo->group = (gyruss_colorram[tile_index] & 0x10) ? 0 : 1;
|
||||
|
||||
SET_TILE_INFO(2, code, color, flags);
|
||||
}
|
||||
|
||||
|
||||
VIDEO_START( gyruss )
|
||||
{
|
||||
sprite_mux_buffer = auto_malloc(256 * spriteram_size);
|
||||
|
||||
state_save_register_global(flipscreen);
|
||||
state_save_register_global(scanline);
|
||||
state_save_register_global_pointer(sprite_mux_buffer,256*spriteram_size);
|
||||
gyruss_tilemap = tilemap_create(gyruss_get_tile_info, tilemap_scan_rows, 8, 8, 32, 32);
|
||||
tilemap_set_transmask(gyruss_tilemap, 0, 0x00, 0); /* opaque */
|
||||
tilemap_set_transmask(gyruss_tilemap, 1, 0x0f, 0); /* transparent */
|
||||
}
|
||||
|
||||
|
||||
|
||||
WRITE8_HANDLER( gyruss_flipscreen_w )
|
||||
{
|
||||
flipscreen = data & 1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Return the current video scan line */
|
||||
READ8_HANDLER( gyruss_scanline_r )
|
||||
{
|
||||
return scanline;
|
||||
/* reads 1V - 128V */
|
||||
return video_screen_get_vpos(0);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void draw_sprites(running_machine *machine, bitmap_t *bitmap)
|
||||
static void draw_sprites(gfx_element **gfx, bitmap_t *bitmap, const rectangle *cliprect)
|
||||
{
|
||||
rectangle clip = machine->screen[0].visarea;
|
||||
int offs;
|
||||
int line;
|
||||
|
||||
|
||||
for (line = 0;line < 256;line++)
|
||||
for (offs = 0xbc; offs >= 0; offs -= 4)
|
||||
{
|
||||
UINT8 *sr;
|
||||
int x = gyruss_spriteram[offs];
|
||||
int y = 241 - gyruss_spriteram[offs + 3];
|
||||
|
||||
sr = sprite_mux_buffer + line * spriteram_size;
|
||||
clip.min_y = clip.max_y = line;
|
||||
int gfx_bank = gyruss_spriteram[offs + 1] & 0x01;
|
||||
int code = ((gyruss_spriteram[offs + 2] & 0x20) << 2) | ( gyruss_spriteram[offs + 1] >> 1);
|
||||
int color = gyruss_spriteram[offs + 2] & 0x0f;
|
||||
int flip_x = ~gyruss_spriteram[offs + 2] & 0x40;
|
||||
int flip_y = gyruss_spriteram[offs + 2] & 0x80;
|
||||
|
||||
for (offs = spriteram_size - 4;offs >= 0;offs -= 4)
|
||||
{
|
||||
int sx,sy;
|
||||
|
||||
sx = sr[offs];
|
||||
sy = 241 - sr[offs + 3];
|
||||
if (sy > line-16 && sy <= line)
|
||||
{
|
||||
drawgfx(bitmap,machine->gfx[sr[offs + 1] & 1],
|
||||
sr[offs + 1]/2 + 4*(sr[offs + 2] & 0x20),
|
||||
sr[offs + 2] & 0x0f,
|
||||
!(sr[offs + 2] & 0x40),sr[offs + 2] & 0x80,
|
||||
sx,sy,
|
||||
&clip,TRANSPARENCY_PEN,0);
|
||||
}
|
||||
}
|
||||
drawgfx(bitmap, gfx[gfx_bank], code, color, flip_x, flip_y, x, y, cliprect, TRANSPARENCY_PEN, 0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
VIDEO_UPDATE( gyruss )
|
||||
{
|
||||
int offs;
|
||||
|
||||
|
||||
/* for every character in the Video RAM, check if it has been modified */
|
||||
/* since last time and update it accordingly. */
|
||||
for (offs = videoram_size - 1;offs >= 0;offs--)
|
||||
if (cliprect->min_y == machine->screen[screen].visarea.min_y)
|
||||
{
|
||||
int sx,sy,flipx,flipy;
|
||||
|
||||
sx = offs % 32;
|
||||
sy = offs / 32;
|
||||
flipx = colorram[offs] & 0x40;
|
||||
flipy = colorram[offs] & 0x80;
|
||||
if (flipscreen)
|
||||
{
|
||||
sx = 31 - sx;
|
||||
sy = 31 - sy;
|
||||
flipx = !flipx;
|
||||
flipy = !flipy;
|
||||
}
|
||||
|
||||
drawgfx(bitmap,machine->gfx[2],
|
||||
videoram[offs] + 8 * (colorram[offs] & 0x20),
|
||||
colorram[offs] & 0x0f,
|
||||
flipx,flipy,
|
||||
8*sx,8*sy,
|
||||
cliprect,TRANSPARENCY_NONE,0);
|
||||
tilemap_mark_all_tiles_dirty(ALL_TILEMAPS);
|
||||
tilemap_set_flip(ALL_TILEMAPS, (*gyruss_flipscreen & 0x01) ? (TILEMAP_FLIPX | TILEMAP_FLIPY) : 0);
|
||||
}
|
||||
|
||||
tilemap_draw(bitmap, cliprect, gyruss_tilemap, TILEMAP_DRAW_OPAQUE, 0);
|
||||
draw_sprites(machine->gfx, bitmap, cliprect);
|
||||
tilemap_draw(bitmap, cliprect, gyruss_tilemap, 0, 0);
|
||||
|
||||
draw_sprites(machine, bitmap);
|
||||
|
||||
|
||||
/* redraw the characters which have priority over sprites */
|
||||
for (offs = videoram_size - 1;offs >= 0;offs--)
|
||||
{
|
||||
int sx,sy,flipx,flipy;
|
||||
|
||||
|
||||
sx = offs % 32;
|
||||
sy = offs / 32;
|
||||
flipx = colorram[offs] & 0x40;
|
||||
flipy = colorram[offs] & 0x80;
|
||||
if (flipscreen)
|
||||
{
|
||||
sx = 31 - sx;
|
||||
sy = 31 - sy;
|
||||
flipx = !flipx;
|
||||
flipy = !flipy;
|
||||
}
|
||||
|
||||
if ((colorram[offs] & 0x10) != 0)
|
||||
drawgfx(bitmap,machine->gfx[2],
|
||||
videoram[offs] + 8 * (colorram[offs] & 0x20),
|
||||
colorram[offs] & 0x0f,
|
||||
flipx,flipy,
|
||||
8*sx,8*sy,
|
||||
cliprect,TRANSPARENCY_NONE,0);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
INTERRUPT_GEN( gyruss_6809_interrupt )
|
||||
{
|
||||
scanline = 255 - cpu_getiloops();
|
||||
|
||||
memcpy(sprite_mux_buffer + scanline * spriteram_size,spriteram,spriteram_size);
|
||||
|
||||
if (scanline == 255)
|
||||
irq0_line_hold(machine, cpunum);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user