diff options
Diffstat (limited to 'src/devices/video/i8244.cpp')
-rw-r--r-- | src/devices/video/i8244.cpp | 162 |
1 files changed, 81 insertions, 81 deletions
diff --git a/src/devices/video/i8244.cpp b/src/devices/video/i8244.cpp index 8288dd9e552..4272f3dfeac 100644 --- a/src/devices/video/i8244.cpp +++ b/src/devices/video/i8244.cpp @@ -24,13 +24,13 @@ DEFINE_DEVICE_TYPE(I8245, i8245_device, "i8245", "Intel 8245") // i8244_device - constructor //------------------------------------------------- -i8244_device::i8244_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) +i8244_device::i8244_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : i8244_device(mconfig, I8244, tag, owner, clock) { } -i8244_device::i8244_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) +i8244_device::i8244_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, type, tag, owner, clock) , device_sound_interface(mconfig, *this) , device_video_interface(mconfig, *this) @@ -40,7 +40,7 @@ i8244_device::i8244_device(const machine_config &mconfig, device_type type, cons } -i8245_device::i8245_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) +i8245_device::i8245_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : i8244_device(mconfig, I8245, tag, owner, clock) { } @@ -135,7 +135,7 @@ void i8244_device::device_start() memset(m_vdc.reg, 0, 0x100); save_pointer(NAME(m_vdc.reg), 0x100); - memset( m_collision_map, 0, sizeof( m_collision_map ) ); + memset(m_collision_map, 0, sizeof(m_collision_map)); save_item(NAME(m_collision_map)); save_item(NAME(m_x_beam_pos)); @@ -174,13 +174,13 @@ void i8244_device::i8244_palette(palette_device &palette) const { 0xff, 0xff, 0xff } // I R G B }; - palette.set_pen_colors( 0, i8244_colors ); + palette.set_pen_colors(0, i8244_colors); } void i8244_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { - switch ( id ) + switch (id) { case TIMER_HBLANK_START: // hblank starts (updates sound shift register) @@ -199,25 +199,25 @@ void i8244_device::device_timer(emu_timer &timer, device_timer_id id, int param, } -offs_t i8244_device::fix_register_mirrors( offs_t offset ) +offs_t i8244_device::fix_register_mirrors(offs_t offset) { // quad x/y registers are mirrored for each quad - if ( ( offset & 0xC2 ) == 0x40 ) + if ((offset & 0xc2) == 0x40) { - offset &= ~0x0C; + offset &= ~0x0c; } // registers $A0-$AF are mirrored at $B0-$BF - if ( ( offset & 0xE0 ) == 0xA0 ) + if ((offset & 0xe0) == 0xa0) { offset &= ~0x10; } - return offset & 0xFF; + return offset & 0xff; } -bool i8244_device::invalid_register( offs_t offset, bool rw ) +bool i8244_device::invalid_register(offs_t offset, bool rw) { // object x/y/attr registers are not accessible when display is enabled // (sprite shape registers still are) @@ -280,9 +280,9 @@ bool i8244_device::invalid_register( offs_t offset, bool rw ) } -uint8_t i8244_device::read(offs_t offset) +u8 i8244_device::read(offs_t offset) { - uint8_t data; + u8 data; offset = fix_register_mirrors(offset); @@ -337,7 +337,7 @@ uint8_t i8244_device::read(offs_t offset) } -void i8244_device::write(offs_t offset, uint8_t data) +void i8244_device::write(offs_t offset, u8 data) { offset = fix_register_mirrors(offset); @@ -470,7 +470,7 @@ void i8244_device::write_cx(int x, bool cx) } -uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +u32 i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { /* Draw background color */ bitmap.fill(bitswap<3>(m_vdc.s.color,3,4,5), cliprect); @@ -478,28 +478,28 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap for (int scanline = cliprect.min_y; scanline <= cliprect.max_y; scanline++) { /* Clear collision map */ - memset( m_collision_map, 0, sizeof( m_collision_map ) ); + memset(m_collision_map, 0, sizeof(m_collision_map)); /* Display grid if enabled */ - if ( m_vdc.s.control & 0x08 ) + if (m_vdc.s.control & 0x08) { - uint16_t color = bitswap<4>(m_vdc.s.color,6,0,1,2); + u16 color = bitswap<4>(m_vdc.s.color,6,0,1,2); int x_grid_offset = 13; int y_grid_offset = 24; int width = 16; int height = 24; - int w = ( m_vdc.s.control & 0x80 ) ? width : 2; + int w = (m_vdc.s.control & 0x80) ? width : 2; /* Draw horizontal part of the grid */ - for ( int y = 0; y < 9; y++ ) + for (int y = 0; y < 9; y++) { - if ( y_grid_offset + y * height <= scanline && scanline < y_grid_offset + y * height + 3 ) + if (y_grid_offset + y * height <= scanline && scanline < y_grid_offset + y * height + 3) { - for ( int i = 0; i < 9; i++ ) + for (int i = 0; i < 9; i++) { - if ( BIT(m_vdc.s.hgrid[1][i] << 8 | m_vdc.s.hgrid[0][i], y) ) + if (BIT(m_vdc.s.hgrid[1][i] << 8 | m_vdc.s.hgrid[0][i], y)) { - for ( int k = 0; k < width + 2; k++ ) + for (int k = 0; k < width + 2; k++) { int x = (x_grid_offset + i * width + k) * 2; @@ -507,8 +507,8 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap { if (cliprect.contains(px, scanline)) { - m_collision_map[ px ] |= 0x20; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= 0x20; + bitmap.pix(scanline, px) = color; } } } @@ -518,15 +518,15 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap } /* Draw dots part of the grid */ - if ( m_vdc.s.control & 0x40 ) + if (m_vdc.s.control & 0x40) { - for ( int y = 0; y < 9; y++ ) + for (int y = 0; y < 9; y++) { - if ( y_grid_offset + y * height <= scanline && scanline < y_grid_offset + y * height + 3 ) + if (y_grid_offset + y * height <= scanline && scanline < y_grid_offset + y * height + 3) { - for ( int i = 0; i < 10; i++ ) + for (int i = 0; i < 10; i++) { - for ( int k = 0; k < 2; k++ ) + for (int k = 0; k < 2; k++) { int x = (x_grid_offset + i * width + k) * 2; @@ -534,8 +534,8 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap { if (cliprect.contains(px, scanline)) { - m_collision_map[ px ] |= 0x20; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= 0x20; + bitmap.pix(scanline, px) = color; } } } @@ -545,15 +545,15 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap } /* Draw vertical part of the grid */ - for( int j = 1, y = 0; y < 8; y++, j <<= 1 ) + for (int j = 1, y = 0; y < 8; y++, j <<= 1) { - if ( y_grid_offset + y * height <= scanline && scanline < y_grid_offset + ( y + 1 ) * height ) + if (y_grid_offset + y * height <= scanline && scanline < y_grid_offset + (y + 1) * height) { - for ( int i = 0; i < 10; i++ ) + for (int i = 0; i < 10; i++) { - if ( m_vdc.s.vgrid[i] & j ) + if (m_vdc.s.vgrid[i] & j) { - for ( int k = 0; k < w; k++ ) + for (int k = 0; k < w; k++) { int x = (x_grid_offset + i * width + k) * 2; @@ -561,8 +561,8 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap { if (cliprect.contains(px, scanline)) { - m_collision_map[ px ] |= 0x10; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= 0x10; + bitmap.pix(scanline, px) = color; } } } @@ -573,37 +573,37 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap } /* Display objects if enabled */ - if ( m_vdc.s.control & 0x20 && scanline <= 242 ) + if (m_vdc.s.control & 0x20 && scanline <= 242) { /* Quad objects */ - for ( int i = ARRAY_LENGTH( m_vdc.s.quad ) - 1; i >= 0; i-- ) + for (int i = ARRAY_LENGTH(m_vdc.s.quad) - 1; i >= 0; i--) { int y = m_vdc.s.quad[i].single[0].y; // Character height is always determined by the height of the 4th character - int height = 8 - ( ( ( y >> 1 ) + m_vdc.s.quad[i].single[3].ptr ) & 7 ); + int height = 8 - (((y >> 1) + m_vdc.s.quad[i].single[3].ptr) & 7); if (height == 1) height = 8; - if ( y <= scanline && scanline < y + height * 2 ) + if (y <= scanline && scanline < y + height * 2) { int x = (m_vdc.s.quad[i].single[0].x + 5) * 2; - for ( int j = 0; j < ARRAY_LENGTH( m_vdc.s.quad[0].single ); j++, x += 16 ) + for (int j = 0; j < ARRAY_LENGTH(m_vdc.s.quad[0].single); j++, x += 16) { - uint16_t color = 8 + ( ( m_vdc.s.quad[i].single[j].color >> 1 ) & 0x07 ); - int offset = ( m_vdc.s.quad[i].single[j].ptr | ( ( m_vdc.s.quad[i].single[j].color & 0x01 ) << 8 ) ) + ( y >> 1 ) + ( ( scanline - y ) >> 1 ); - uint8_t chr = m_charset[ offset & 0x1FF ]; + u16 color = 8 + ((m_vdc.s.quad[i].single[j].color >> 1) & 0x07); + int offset = (m_vdc.s.quad[i].single[j].ptr | ((m_vdc.s.quad[i].single[j].color & 0x01) << 8)) + (y >> 1) + ((scanline - y) >> 1); + u8 chr = m_charset[offset & 0x1ff]; - for ( uint8_t m = 0x80; m > 0; m >>= 1, x += 2 ) + for (u8 m = 0x80; m > 0; m >>= 1, x += 2) { - if ( chr & m ) + if (chr & m) { for (int px = x; px < x + 2; px++) { if (cliprect.contains(px, scanline)) { // Check collision with self - u8 colx = m_collision_map[ px ]; + u8 colx = m_collision_map[px]; if (colx & 0x80) { colx &= ~0x80; @@ -618,8 +618,8 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap if (m_vdc.s.collision & 0x80) m_collision_status |= colx; - m_collision_map[ px ] |= 0x80; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= 0x80; + bitmap.pix(scanline, px) = color; } } } @@ -629,29 +629,29 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap } /* Regular foreground objects */ - for ( int i = ARRAY_LENGTH( m_vdc.s.foreground ) - 1; i >= 0; i-- ) + for (int i = ARRAY_LENGTH(m_vdc.s.foreground) - 1; i >= 0; i--) { int y = m_vdc.s.foreground[i].y; - int height = 8 - ( ( ( y >> 1 ) + m_vdc.s.foreground[i].ptr ) & 7 ); + int height = 8 - (((y >> 1) + m_vdc.s.foreground[i].ptr) & 7); if (height == 1) height = 8; - if ( y <= scanline && scanline < y + height * 2 ) + if (y <= scanline && scanline < y + height * 2) { - uint16_t color = 8 + ( ( m_vdc.s.foreground[i].color >> 1 ) & 0x07 ); - int offset = ( m_vdc.s.foreground[i].ptr | ( ( m_vdc.s.foreground[i].color & 0x01 ) << 8 ) ) + ( y >> 1 ) + ( ( scanline - y ) >> 1 ); - uint8_t chr = m_charset[ offset & 0x1FF ]; + u16 color = 8 + ((m_vdc.s.foreground[i].color >> 1) & 0x07); + int offset = (m_vdc.s.foreground[i].ptr | ((m_vdc.s.foreground[i].color & 0x01) << 8)) + (y >> 1) + ((scanline - y) >> 1); + u8 chr = m_charset[offset & 0x1ff]; int x = (m_vdc.s.foreground[i].x + 5) * 2; - for ( uint8_t m = 0x80; m > 0; m >>= 1, x += 2 ) + for (u8 m = 0x80; m > 0; m >>= 1, x += 2) { - if ( chr & m ) + if (chr & m) { for (int px = x; px < x + 2; px++) { if (cliprect.contains(px, scanline)) { // Check collision with self - u8 colx = m_collision_map[ px ]; + u8 colx = m_collision_map[px]; if (colx & 0x80) { colx &= ~0x80; @@ -666,8 +666,8 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap if (m_vdc.s.collision & 0x80) m_collision_status |= colx; - m_collision_map[ px ] |= 0x80; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= 0x80; + bitmap.pix(scanline, px) = color; } } } @@ -676,30 +676,30 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap } /* Sprites */ - for ( int i = ARRAY_LENGTH( m_vdc.s.sprites ) - 1; i >= 0; i-- ) + for (int i = ARRAY_LENGTH(m_vdc.s.sprites) - 1; i >= 0; i--) { int y = m_vdc.s.sprites[i].y; int height = 8; bool zoom_enable = bool(m_vdc.s.sprites[i].color & 4); int zoom_px = zoom_enable ? 4 : 2; - if ( y <= scanline && scanline < y + height * zoom_px ) + if (y <= scanline && scanline < y + height * zoom_px) { - uint16_t color = 8 + ( ( m_vdc.s.sprites[i].color >> 3 ) & 0x07 ); - uint8_t chr = m_vdc.s.shape[i][ ( ( scanline - y ) / zoom_px ) ]; + u16 color = 8 + ((m_vdc.s.sprites[i].color >> 3) & 0x07); + u8 chr = m_vdc.s.shape[i][((scanline - y) / zoom_px)]; int x = (m_vdc.s.sprites[i].x + 5) * 2; int x_shift = 0; - switch ( m_vdc.s.sprites[i].color & 0x03 ) + switch (m_vdc.s.sprites[i].color & 0x03) { case 1: // Xg attribute set x_shift = 1; break; case 2: // S attribute set - x_shift = ( ( ( scanline - y ) / zoom_px ) & 0x01 ) ^ 0x01; + x_shift = (((scanline - y) / zoom_px) & 0x01) ^ 0x01; break; case 3: // Xg and S attributes set - x_shift = ( ( scanline - y ) / zoom_px ) & 0x01; + x_shift = ((scanline - y) / zoom_px) & 0x01; break; default: break; @@ -707,9 +707,9 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap x += x_shift * (zoom_px / 2); - for ( uint8_t m = 0x01; m > 0; m <<= 1, x += zoom_px ) + for (u8 m = 0x01; m > 0; m <<= 1, x += zoom_px) { - if ( chr & m ) + if (chr & m) { for (int px = x; px < x + zoom_px; px++) { @@ -718,15 +718,15 @@ uint32_t i8244_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap u8 mask = 1 << i; // Check if we collide with an already drawn source object - if (m_vdc.s.collision & m_collision_map[ px ]) + if (m_vdc.s.collision & m_collision_map[px]) m_collision_status |= mask; // Check if an already drawn object would collide with us if (m_vdc.s.collision & mask) - m_collision_status |= m_collision_map[ px ]; + m_collision_status |= m_collision_map[px]; - m_collision_map[ px ] |= mask; - bitmap.pix16( scanline, px ) = color; + m_collision_map[px] |= mask; + bitmap.pix(scanline, px) = color; } } } @@ -783,9 +783,9 @@ void i8244_device::sound_update() // loop sound signal |= feedback << 23; - m_vdc.s.shift3 = signal & 0xFF; - m_vdc.s.shift2 = ( signal >> 8 ) & 0xFF; - m_vdc.s.shift1 = ( signal >> 16 ) & 0xFF; + m_vdc.s.shift3 = signal & 0xff; + m_vdc.s.shift2 = (signal >> 8) & 0xff; + m_vdc.s.shift1 = (signal >> 16) & 0xff; // sound interrupt if (++m_sh_count == 24) |