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-rw-r--r--src/mess/video/wswan_video.c1216
1 files changed, 0 insertions, 1216 deletions
diff --git a/src/mess/video/wswan_video.c b/src/mess/video/wswan_video.c
deleted file mode 100644
index 8dbb60f0db8..00000000000
--- a/src/mess/video/wswan_video.c
+++ /dev/null
@@ -1,1216 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Anthony Kruize, Wilbert Pol
-/***************************************************************************
-
- wswan_video.c
-
- File to handle video emulation of the Bandai WonderSwan VDP.
-
- Anthony Kruize
- Wilbert Pol
-
- TODO:
- - remove the redundant parts of m_regs
- - split the Color VDP from the Mono VDP?
-
- ***************************************************************************/
-
-#include "wswan_video.h"
-
-const device_type WSWAN_VIDEO = &device_creator<wswan_video_device>;
-
-
-wswan_video_device::wswan_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
- : device_t(mconfig, WSWAN_VIDEO, "Bandai WonderSwan VDP", tag, owner, clock, "wswan_video", __FILE__),
- m_vdp_type(VDP_TYPE_WSWAN)
-{
-}
-
-
-void wswan_video_device::common_save()
-{
- save_item(NAME(m_bitmap));
- save_item(NAME(m_vram));
- save_item(NAME(m_palette_port));
- save_item(NAME(m_pal));
- save_item(NAME(m_regs));
-
- save_item(NAME(m_layer_bg_enable));
- save_item(NAME(m_layer_fg_enable));
- save_item(NAME(m_sprites_enable));
- save_item(NAME(m_window_sprites_enable));
- save_item(NAME(m_window_fg_mode));
- save_item(NAME(m_bg_control));
- save_item(NAME(m_current_line));
- save_item(NAME(m_line_compare));
- save_item(NAME(m_sprite_table_address));
- save_item(NAME(m_sprite_table_buffer));
- save_item(NAME(m_sprite_first));
- save_item(NAME(m_sprite_count));
- save_item(NAME(m_sprite_first_latch));
- save_item(NAME(m_sprite_count_latch));
- save_item(NAME(m_layer_bg_address));
- save_item(NAME(m_layer_fg_address));
- save_item(NAME(m_window_fg_left));
- save_item(NAME(m_window_fg_top));
- save_item(NAME(m_window_fg_right));
- save_item(NAME(m_window_fg_bottom));
- save_item(NAME(m_window_sprites_left));
- save_item(NAME(m_window_sprites_top));
- save_item(NAME(m_window_sprites_right));
- save_item(NAME(m_window_sprites_bottom));
- save_item(NAME(m_layer_bg_scroll_x));
- save_item(NAME(m_layer_bg_scroll_y));
- save_item(NAME(m_layer_fg_scroll_x));
- save_item(NAME(m_layer_fg_scroll_y));
- save_item(NAME(m_lcd_control));
- save_item(NAME(m_icons));
- save_item(NAME(m_color_mode));
- save_item(NAME(m_colors_16));
- save_item(NAME(m_tile_packed));
- save_item(NAME(m_timer_hblank_enable));
- save_item(NAME(m_timer_hblank_mode));
- save_item(NAME(m_timer_hblank_reload));
- save_item(NAME(m_timer_hblank_count));
- save_item(NAME(m_timer_vblank_enable));
- save_item(NAME(m_timer_vblank_mode));
- save_item(NAME(m_timer_vblank_reload));
- save_item(NAME(m_timer_vblank_count));
- save_item(NAME(m_main_palette));
-}
-
-void wswan_video_device::device_start()
-{
- machine().first_screen()->register_screen_bitmap(m_bitmap);
-
- m_timer = timer_alloc(TIMER_SCANLINE);
- m_timer->adjust(attotime::from_ticks(256, 3072000), 0, attotime::from_ticks(256, 3072000));
-
- // bind callbacks
- m_set_irq_cb.bind_relative_to(*owner());
- m_snd_dma_cb.bind_relative_to(*owner());
-
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- m_vram.resize(0x10000);
- memset(&m_vram[0], 0, 0x10000);
- m_palette_vram = &m_vram[0xfe00];
- }
- else
- {
- m_vram.resize(0x4000);
- memset(&m_vram[0], 0, 0x4000);
- m_palette_vram = &m_vram[0];
- }
-
- common_save();
-}
-
-// This is a copy of ws_portram_init
-// TODO: remove unneeded parts!
-static const UINT8 vdp_regs_init[256] =
-{
- 0x00, 0x00, 0x00/*?*/, 0xbb, 0x00, 0x00, 0x00, 0x26, 0xfe, 0xde, 0xf9, 0xfb, 0xdb, 0xd7, 0x7f, 0xf5,
- 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x9e, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x99, 0xfd, 0xb7, 0xdf,
- 0x30, 0x57, 0x75, 0x76, 0x15, 0x73, 0x70/*77?*/, 0x77, 0x20, 0x75, 0x50, 0x36, 0x70, 0x67, 0x50, 0x77,
- 0x57, 0x54, 0x75, 0x77, 0x75, 0x17, 0x37, 0x73, 0x50, 0x57, 0x60, 0x77, 0x70, 0x77, 0x10, 0x73,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00,
- 0x87, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x4f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0xdb, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x42, 0x00, 0x83, 0x00,
- 0x2f, 0x3f, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1,
- 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1,
- 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1,
- 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1
-};
-
-
-void wswan_video_device::device_reset()
-{
- m_layer_bg_enable = 0;
- m_layer_fg_enable = 0;
- m_sprites_enable = 0;
- m_window_sprites_enable = 0;
- m_window_fg_mode = 0;
- m_bg_control = 0;
- m_current_line = 145; // Randomly chosen, beginning of VBlank period to give cart some time to boot up
- m_line_compare = 0;
- m_sprite_table_address = 0;
- m_sprite_first = 0;
- m_sprite_count = 0;
- m_sprite_first_latch = 0;
- m_sprite_count_latch = 0;
- m_layer_bg_address = 0;
- m_layer_fg_address = 0;
- m_window_fg_left = 0;
- m_window_fg_top = 0;
- m_window_fg_right = 0;
- m_window_fg_bottom = 0;
- m_window_sprites_left = 0;
- m_window_sprites_top = 0;
- m_window_sprites_right = 0;
- m_window_sprites_bottom = 0;
- m_layer_bg_scroll_x = 0;
- m_layer_bg_scroll_y = 0;
- m_layer_fg_scroll_x = 0;
- m_layer_fg_scroll_y = 0;
- m_lcd_control = 0x01;
- m_icons = 0;
- m_color_mode = 0;
- m_colors_16 = 0;
- m_tile_packed = 0;
- m_timer_hblank_enable = 0;
- m_timer_hblank_mode = 0;
- m_timer_hblank_reload = 0;
- m_timer_hblank_count = 0;
- m_timer_vblank_enable = 0;
- m_timer_vblank_mode = 0;
- m_timer_vblank_reload = 0;
- m_timer_vblank_count = 0; /* Vertical blank timer counter value */
-
- memset(m_sprite_table_buffer, 0, sizeof(m_sprite_table_buffer));
- memset(m_main_palette, 0, sizeof(m_main_palette));
- memcpy(m_regs, vdp_regs_init, 256);
- for (int i = 0; i < 0x20; i++)
- m_palette_port[i] = m_regs[i + 0x20];
-
- setup_palettes();
-}
-
-
-void wswan_video_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
-{
- switch (id)
- {
- case TIMER_SCANLINE:
- scanline_interrupt();
- break;
- }
-}
-
-
-void wswan_video_device::setup_palettes()
-{
- if (m_color_mode)
- {
- for (int i = 0; i < 16; i++)
- for (int j = 0; j < 16; j++)
- m_pal[i][j] = ((m_palette_vram[(i << 5) + j * 2 + 1] << 8) | m_palette_vram[(i << 5) + j * 2]) & 0x0fff;
- }
- else
- {
- for (int i = 0; i < 16; i++)
- {
- m_pal[i][0] = (m_palette_port[(i << 1)] >> 0) & 0x07;
- m_pal[i][1] = (m_palette_port[(i << 1)] >> 4) & 0x07;
- m_pal[i][2] = (m_palette_port[(i << 1) + 1] >> 0) & 0x07;
- m_pal[i][3] = (m_palette_port[(i << 1) + 1] >> 4) & 0x07;
- }
- }
-}
-
-void wswan_video_device::draw_background()
-{
- UINT16 map_addr = m_layer_bg_address + (((m_current_line + m_layer_bg_scroll_y) & 0xf8) << 3);
- UINT8 start_column = (m_layer_bg_scroll_x >> 3);
-
- for (int column = 0; column < 29; column++)
- {
- UINT32 plane0 = 0, plane1 = 0, plane2 = 0, plane3 = 0;
- int x_offset, tile_line, tile_address;
- int tile_data = (m_vram[map_addr + (((start_column + column) & 0x1f) << 1) + 1] << 8)
- | m_vram[map_addr + (((start_column + column) & 0x1f) << 1)];
- int tile_number = tile_data & 0x01ff;
- int tile_palette = (tile_data >> 9) & 0x0f;
-
- tile_line = (m_current_line + m_layer_bg_scroll_y) & 0x07;
- if (tile_data & 0x8000) // vflip
- tile_line = 7 - tile_line;
-
- if (m_colors_16)
- {
- tile_address = ((tile_data & 0x2000) ? 0x8000 : 0x4000) + (tile_number * 32) + (tile_line << 2);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 24) | (m_vram[tile_address + 1] << 16) | (m_vram[tile_address + 2] << 8) | m_vram[tile_address + 3];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = m_vram[tile_address + 2] << 2;
- plane3 = m_vram[tile_address + 3] << 3;
- }
- }
- else
- {
- tile_address = 0x2000 + (tile_number * 16) + (tile_line << 1);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 8) | m_vram[tile_address + 1];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = 0;
- plane3 = 0;
- }
- }
-
- for (int x = 0; x < 8; x++)
- {
- int col;
- if (m_tile_packed)
- {
- if (m_colors_16)
- {
- col = plane0 & 0x0f;
- plane0 = plane0 >> 4;
- }
- else
- {
- col = plane0 & 0x03;
- plane0 = plane0 >> 2;
- }
- }
- else
- {
- col = (plane3 & 8) | (plane2 & 4) | (plane1 & 2) | (plane0 & 1);
- plane3 = plane3 >> 1;
- plane2 = plane2 >> 1;
- plane1 = plane1 >> 1;
- plane0 = plane0 >> 1;
- }
-
- if (tile_data & 0x4000)
- x_offset = x + (column << 3) - (m_layer_bg_scroll_x & 0x07);
- else
- x_offset = 7 - x + (column << 3) - (m_layer_bg_scroll_x & 0x07);
-
- if (x_offset >= 0 && x_offset < WSWAN_X_PIXELS)
- {
- if (m_colors_16)
- {
- if (col)
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- {
- /* Hmmmm, what should we do here... Is this correct?? */
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- }
- }
- }
- else
- {
- if (col || !(tile_palette & 4))
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- m_bitmap.pix16(m_current_line, x_offset) = m_main_palette[m_pal[tile_palette][col]];
- }
- }
- }
- }
- }
-}
-
-void wswan_video_device::draw_foreground_0()
-{
- UINT16 map_addr = m_layer_fg_address + (((m_current_line + m_layer_fg_scroll_y) & 0xf8) << 3);
- UINT8 start_column = (m_layer_fg_scroll_x >> 3);
-
- for (int column = 0; column < 29; column++)
- {
- UINT32 plane0 = 0, plane1 = 0, plane2 = 0, plane3 = 0;
- int x_offset, tile_line, tile_address;
- int tile_data = (m_vram[map_addr + (((start_column + column) & 0x1f) << 1) + 1] << 8)
- | m_vram[map_addr + (((start_column + column) & 0x1f) << 1)];
- int tile_number = tile_data & 0x01ff;
- int tile_palette = (tile_data >> 9) & 0x0f;
-
- tile_line = (m_current_line + m_layer_fg_scroll_y) & 0x07;
- if (tile_data & 0x8000) // vflip
- tile_line = 7 - tile_line;
-
- if (m_colors_16)
- {
- tile_address = ((tile_data & 0x2000) ? 0x8000 : 0x4000) + (tile_number * 32) + (tile_line << 2);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 24) | (m_vram[tile_address + 1] << 16) | (m_vram[tile_address + 2] << 8) | m_vram[tile_address + 3];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = m_vram[tile_address + 2] << 2;
- plane3 = m_vram[tile_address + 3] << 3;
- }
- }
- else
- {
- tile_address = 0x2000 + (tile_number * 16) + (tile_line << 1);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 8) | m_vram[tile_address + 1];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = 0;
- plane3 = 0;
- }
- }
-
- for (int x = 0; x < 8; x++ )
- {
- int col;
- if (m_tile_packed)
- {
- if (m_colors_16)
- {
- col = plane0 & 0x0f;
- plane0 = plane0 >> 4;
- }
- else
- {
- col = plane0 & 0x03;
- plane0 = plane0 >> 2;
- }
- }
- else
- {
- col = (plane3 & 8) | (plane2 & 4) | (plane1 & 2) | (plane0 & 1);
- plane3 = plane3 >> 1;
- plane2 = plane2 >> 1;
- plane1 = plane1 >> 1;
- plane0 = plane0 >> 1;
- }
-
- if (tile_data & 0x4000)
- x_offset = x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
- else
- x_offset = 7 - x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
-
- if (x_offset >= 0 && x_offset < WSWAN_X_PIXELS)
- {
- if (m_colors_16)
- {
- if (col)
- {
-// if (m_color_mode) {
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
-// } else {
-// /* Hmmmm, what should we do here... Is this correct?? */
-// m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
-// }
- }
- }
- else
- {
- if (col || !(tile_palette & 4))
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- m_bitmap.pix16(m_current_line, x_offset) = m_main_palette[m_pal[tile_palette][col]];
- }
- }
- }
- }
- }
-}
-
-void wswan_video_device::draw_foreground_2()
-{
- UINT16 map_addr = m_layer_fg_address + (((m_current_line + m_layer_fg_scroll_y) & 0xf8) << 3);
- UINT8 start_column = (m_layer_fg_scroll_x >> 3);
-
- for (int column = 0; column < 29; column++)
- {
- UINT32 plane0 = 0, plane1 = 0, plane2 = 0, plane3 = 0;
- int x_offset, tile_line, tile_address;
- int tile_data = (m_vram[map_addr + (((start_column + column) & 0x1f) << 1) + 1] << 8)
- | m_vram[map_addr + (((start_column + column) & 0x1f) << 1)];
- int tile_number = tile_data & 0x01ff;
- int tile_palette = (tile_data >> 9) & 0x0f;
-
- tile_line = (m_current_line + m_layer_fg_scroll_y) & 0x07;
- if (tile_data & 0x8000) // vflip
- tile_line = 7 - tile_line;
-
-
- if (m_colors_16)
- {
- tile_address = ((tile_data & 0x2000) ? 0x8000 : 0x4000) + (tile_number * 32) + (tile_line << 2);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 24) | (m_vram[tile_address + 1] << 16) | (m_vram[tile_address + 2] << 8) | m_vram[tile_address + 3];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = m_vram[tile_address + 2] << 2;
- plane3 = m_vram[tile_address + 3] << 3;
- }
- }
- else
- {
- tile_address = 0x2000 + (tile_number * 16) + (tile_line << 1);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 8) | m_vram[tile_address + 1];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = 0;
- plane3 = 0;
- }
- }
-
- for (int x = 0; x < 8; x++)
- {
- int col;
- if (m_tile_packed)
- {
- if (m_colors_16)
- {
- col = plane0 & 0x0f;
- plane0 = plane0 >> 4;
- }
- else
- {
- col = plane0 & 0x03;
- plane0 = plane0 >> 2;
- }
- }
- else
- {
- col = (plane3 & 8) | (plane2 & 4) | (plane1 & 2) | (plane0 & 1);
- plane3 = plane3 >> 1;
- plane2 = plane2 >> 1;
- plane1 = plane1 >> 1;
- plane0 = plane0 >> 1;
- }
-
- if (tile_data & 0x4000)
- x_offset = x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
- else
- x_offset = 7 - x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
-
- if (x_offset >= 0 && x_offset >= m_window_fg_left && x_offset < m_window_fg_right && x_offset < WSWAN_X_PIXELS)
- {
- if (m_colors_16)
- {
- if (col)
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- /* Hmmmm, what should we do here... Is this correct?? */
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- }
- }
- else
- {
- if (col || !(tile_palette & 4))
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- m_bitmap.pix16(m_current_line, x_offset) = m_main_palette[m_pal[tile_palette][col]];
- }
- }
- }
- }
- }
-}
-
-void wswan_video_device::draw_foreground_3()
-{
- UINT16 map_addr = m_layer_fg_address + (((m_current_line + m_layer_fg_scroll_y) & 0xf8) << 3);
- UINT8 start_column = (m_layer_fg_scroll_x >> 3);
-
- for (int column = 0; column < 29; column++)
- {
- UINT32 plane0 = 0, plane1 = 0, plane2 = 0, plane3 = 0;
- int x_offset, tile_line, tile_address;
- int tile_data = (m_vram[map_addr + (((start_column + column) & 0x1f) << 1) + 1] << 8)
- | m_vram[map_addr + (((start_column + column) & 0x1f) << 1)];
- int tile_number = tile_data & 0x01ff;
- int tile_palette = (tile_data >> 9) & 0x0f;
-
- tile_line = (m_current_line + m_layer_fg_scroll_y) & 0x07;
- if (tile_data & 0x8000) // vflip
- tile_line = 7 - tile_line;
-
- if (m_colors_16)
- {
- tile_address = ((tile_data & 0x2000) ? 0x8000 : 0x4000) + (tile_number * 32) + (tile_line << 2);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 24) | (m_vram[tile_address + 1] << 16) | (m_vram[tile_address + 2] << 8) | m_vram[tile_address + 3];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = m_vram[tile_address + 2] << 2;
- plane3 = m_vram[tile_address + 3] << 3;
- }
- }
- else
- {
- tile_address = 0x2000 + (tile_number * 16) + (tile_line << 1);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 8) | m_vram[tile_address + 1];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = 0;
- plane3 = 0;
- }
- }
-
- for (int x = 0; x < 8; x++)
- {
- int col;
- if (m_tile_packed)
- {
- if (m_colors_16)
- {
- col = plane0 & 0x0f;
- plane0 = plane0 >> 4;
- }
- else
- {
- col = plane0 & 0x03;
- plane0 = plane0 >> 2;
- }
- }
- else
- {
- col = (plane3 & 8) | (plane2 & 4) | (plane1 & 2) | (plane0 & 1);
- plane3 = plane3 >> 1;
- plane2 = plane2 >> 1;
- plane1 = plane1 >> 1;
- plane0 = plane0 >> 1;
- }
-
- if (tile_data & 0x4000)
- x_offset = x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
- else
- x_offset = 7 - x + (column << 3) - (m_layer_fg_scroll_x & 0x07);
-
- if ((x_offset >= 0 && x_offset < m_window_fg_left) || (x_offset >= m_window_fg_right && x_offset < WSWAN_X_PIXELS))
- {
- if (m_colors_16)
- {
- if (col)
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- /* Hmmmm, what should we do here... Is this correct?? */
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- }
- }
- else
- {
- if (col || !(tile_palette & 4))
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- m_bitmap.pix16(m_current_line, x_offset) = m_main_palette[m_pal[tile_palette][col]];
- }
- }
- }
- }
- }
-}
-
-void wswan_video_device::handle_sprites(int mask)
-{
- if (m_sprite_count == 0)
- return;
-
- for (int i = m_sprite_first + m_sprite_count - 1; i >= m_sprite_first; i--)
- {
- UINT16 tile_data = (m_sprite_table_buffer[i * 4 + 1] << 8) | m_sprite_table_buffer[i * 4];
- UINT8 y = m_sprite_table_buffer[ i * 4 + 2 ];
- UINT8 x = m_sprite_table_buffer[ i * 4 + 3 ];
- int tile_line = (m_current_line - y) & 0xff;
-
- if ((tile_line >= 0) && (tile_line < 8) && ((tile_data & 0x2000) == mask))
- {
- UINT32 plane0 = 0, plane1 = 0, plane2 = 0, plane3 = 0;
- int x_offset, tile_address;
- int tile_number = tile_data & 0x01ff;
- int tile_palette = 8 + ((tile_data >> 9) & 0x07);
- int check_clip = 0;
-
- if (tile_data & 0x8000)
- tile_line = 7 - tile_line;
-
- if (m_colors_16)
- {
- tile_address = 0x4000 + (tile_number * 32) + (tile_line << 2);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 24) | (m_vram[tile_address + 1] << 16) | (m_vram[tile_address + 2] << 8) | m_vram[tile_address + 3];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = m_vram[tile_address + 2] << 2;
- plane3 = m_vram[tile_address + 3] << 3;
- }
- }
- else
- {
- tile_address = 0x2000 + (tile_number * 16) + (tile_line << 1);
- if (m_tile_packed)
- {
- plane0 = (m_vram[tile_address + 0] << 8) | m_vram[tile_address + 1];
- }
- else
- {
- plane0 = m_vram[tile_address + 0];
- plane1 = m_vram[tile_address + 1] << 1;
- plane2 = 0;
- plane3 = 0;
- }
- }
-
- if (m_window_sprites_enable)
- {
- if (tile_data & 0x1000)
- {
- if (m_current_line >= m_window_sprites_top && m_current_line <= m_window_sprites_bottom)
- check_clip = 1;
- }
- else
- {
- if (m_current_line < m_window_sprites_top || m_current_line > m_window_sprites_bottom)
- continue;
- }
- }
-
- for (int j = 0; j < 8; j++)
- {
- int col;
- if (m_tile_packed)
- {
- if (m_colors_16)
- {
- col = plane0 & 0x0f;
- plane0 = plane0 >> 4;
- }
- else
- {
- col = plane0 & 0x03;
- plane0 = plane0 >> 2;
- }
- }
- else
- {
- col = (plane3 & 8) | (plane2 & 4) | (plane1 & 2) | (plane0 & 1);
- plane3 = plane3 >> 1;
- plane2 = plane2 >> 1;
- plane1 = plane1 >> 1;
- plane0 = plane0 >> 1;
- }
-
- if (tile_data & 0x4000)
- x_offset = x + j;
- else
- x_offset = x + 7 - j;
-
- x_offset = x_offset & 0xff;
-
- if (m_window_sprites_enable)
- {
- if (tile_data & 0x1000 && check_clip)
- {
- if (x_offset >= m_window_sprites_left && x_offset <= m_window_sprites_right)
- continue;
- }
- else
- {
- if (x_offset < m_window_sprites_left || x_offset > m_window_sprites_right)
- {
-// continue;
- }
- }
- }
- if (x_offset >= 0 && x_offset < WSWAN_X_PIXELS)
- {
- if (m_colors_16)
- {
- if (col)
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- /* Hmmmm, what should we do here... Is this correct?? */
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- }
- }
- else
- {
- if (col || !(tile_palette & 4))
- {
- if (m_color_mode)
- m_bitmap.pix16(m_current_line, x_offset) = m_pal[tile_palette][col];
- else
- m_bitmap.pix16(m_current_line, x_offset) = m_main_palette[m_pal[tile_palette][col]];
- }
- }
- }
- }
- }
- }
-}
-
-
-void wswan_video_device::refresh_scanline()
-{
- setup_palettes();
-
- rectangle rec(0, WSWAN_X_PIXELS, m_current_line, m_current_line);
- if (m_lcd_control)
- {
- /* Not sure if these background color checks and settings are correct */
- if (m_color_mode && m_colors_16)
- m_bitmap.fill(m_pal[m_bg_control >> 4][m_bg_control & 0x0f], rec);
- else
- m_bitmap.fill(m_main_palette[m_bg_control & 0x07], rec);
- }
- else
- {
- m_bitmap.fill(0, rec);
- return;
- }
-
- // Draw background layer
- if (m_layer_bg_enable)
- draw_background();
-
- // Draw sprites between background and foreground layers
- if (m_sprites_enable)
- handle_sprites(0);
-
- // Draw foreground layer, taking window settings into account
- if (m_layer_fg_enable)
- {
- switch (m_window_fg_mode)
- {
- case 0: // FG inside & outside window area
- draw_foreground_0();
- break;
- case 1: // ???
- logerror("Unknown foreground mode 1 set\n");
- break;
- case 2: // FG only inside window area
- if (m_current_line >= m_window_fg_top && m_current_line <= m_window_fg_bottom)
- draw_foreground_2();
- break;
- case 3: // FG only outside window area
- if (m_current_line < m_window_fg_top || m_current_line > m_window_fg_bottom)
- draw_foreground_0();
- else
- draw_foreground_3();
- break;
- }
- }
-
- // Draw sprites in front of foreground layer
- if (m_sprites_enable)
- handle_sprites(0x2000);
-}
-
-
-
-UINT32 wswan_video_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
- return 0;
-}
-
-
-READ8_MEMBER(wswan_video_device::reg_r)
-{
- UINT8 value = m_regs[offset];
-
- if (offset >= 0x20 && offset < 0x40)
- return m_palette_port[offset & 0x1f];
-
- switch (offset)
- {
- case 0x01:
- value = m_bg_control;
- break;
- case 0x02:
- value = m_current_line;
- break;
- case 0x14:
- value = m_lcd_control;
- break;
- case 0xa8:
- value = m_timer_hblank_count & 0xff;
- break;
- case 0xa9:
- value = m_timer_hblank_count >> 8;
- break;
- case 0xaa:
- value = m_timer_vblank_count & 0xff;
- break;
- case 0xab:
- value = m_timer_vblank_count >> 8;
- break;
- }
-
- return value;
-}
-
-
-WRITE8_MEMBER(wswan_video_device::reg_w)
-{
- if (offset >= 0x20 && offset < 0x40)
- {
- // 0x20-0x3f tile/sprite palette settings
- // even offs
- // Bit 0-3 - Palette (offs & 0x1f)/2 index 0
- // Bit 4-7 - Palette (offs & 0x1f)/2 index 1
- // odd offs
- // Bit 0-3 - Palette (offs & 0x1f)/2 index 2
- // Bit 4-7 - Palette (offs & 0x1f)/2 index 3
- m_palette_port[offset & 0x1f] = data;
- return;
- }
-
- switch (offset)
- {
- case 0x00: // Display control
- // Bit 0 - Background layer enable
- // Bit 1 - Foreground layer enable
- // Bit 2 - Sprites enable
- // Bit 3 - Sprite window enable
- // Bit 4-5 - Foreground window configuration
- // 00 - Foreground layer is displayed inside and outside foreground window area
- // 01 - Unknown
- // 10 - Foreground layer is displayed only inside foreground window area
- // 11 - Foreground layer is displayed outside foreground window area
- // Bit 6-7 - Unknown
- m_layer_bg_enable = data & 0x1;
- m_layer_fg_enable = (data & 0x2) >> 1;
- m_sprites_enable = (data & 0x4) >> 2;
- m_window_sprites_enable = (data & 0x8) >> 3;
- m_window_fg_mode = (data & 0x30) >> 4;
- break;
- case 0x01: // Background colour
- // In 16 colour mode:
- // Bit 0-3 - Palette index
- // Bit 4-7 - Palette number
- // Otherwise:
- // Bit 0-2 - Main palette index
- // Bit 3-7 - Unknown
- m_bg_control = data;
- break;
- case 0x02: // Current scanline (Most likely read-only)
- logerror("Write to current scanline! Current value: %d Data to write: %d\n", m_current_line, data);
- // Returning so we don't overwrite the value here, not that it really matters
- return;
- case 0x03: // Line compare
- m_line_compare = data;
- logerror("Write to line compare: %d\n", data);
- break;
- case 0x04: // Sprite table base address
- // Bit 0-5 - Determine sprite table base address 0 0xxxxxx0 00000000
- // Bit 6-7 - Unknown
- m_sprite_table_address = (data & 0x3f) << 9;
- break;
- case 0x05: // First sprite number (the one we start drawing with)
- m_sprite_first_latch = data;
- if (data) logerror("non-zero first sprite %d\n", data);
- break;
- case 0x06: // Number of sprites to draw
- m_sprite_count_latch = data;
- break;
- case 0x07: // Background/Foreground table base addresses
- // Bit 0-2 - Determine background table base address 00xxx000 00000000
- // Bit 3 - Unknown
- // Bit 4-6 - Determine foreground table base address 00xxx000 00000000
- // Bit 7 - Unknown
- m_layer_bg_address = (data & 0x7) << 11;
- m_layer_fg_address = (data & 0x70) << 7;
- break;
- case 0x08: // Left coordinate of foreground window
- m_window_fg_left = data;
- break;
- case 0x09: // Top coordinate of foreground window
- m_window_fg_top = data;
- break;
- case 0x0a: // Right coordinate of foreground window
- m_window_fg_right = data;
- break;
- case 0x0b: // Bottom coordinate of foreground window
- m_window_fg_bottom = data;
- break;
- case 0x0c: // Left coordinate of sprite window
- m_window_sprites_left = data;
- break;
- case 0x0d: // Top coordinate of sprite window
- m_window_sprites_top = data;
- break;
- case 0x0e: // Right coordinate of sprite window
- m_window_sprites_right = data;
- break;
- case 0x0f: // Bottom coordinate of sprite window
- m_window_sprites_bottom = data;
- break;
- case 0x10: // Background layer X scroll
- m_layer_bg_scroll_x = data;
- break;
- case 0x11: // Background layer Y scroll
- m_layer_bg_scroll_y = data;
- break;
- case 0x12: // Foreground layer X scroll
- m_layer_fg_scroll_x = data;
- break;
- case 0x13: // Foreground layer Y scroll
- m_layer_fg_scroll_y = data;
- break;
- case 0x14: // LCD control
- // Bit 0 - LCD enable
- // Bit 1-7 - Unknown
- m_lcd_control = data;
- break;
- case 0x15: // LCD icons
- // Bit 0 - LCD sleep icon enable
- // Bit 1 - Vertical position icon enable
- // Bit 2 - Horizontal position icon enable
- // Bit 3 - Dot 1 icon enable
- // Bit 4 - Dot 2 icon enable
- // Bit 5 - Dot 3 icon enable
- // Bit 6-7 - Unknown
- m_icons = data; /* ummmmm */
- break;
- case 0x1c: // Palette colors 0 and 1
- // Bit 0-3 - Gray tone setting for main palette index 0
- // Bit 4-7 - Gray tone setting for main palette index 1
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- int i = 15 - (data & 0x0f);
- int j = 15 - ((data & 0xf0) >> 4);
- m_main_palette[0] = (i << 8) | (i << 4) | i;
- m_main_palette[1] = (j << 8) | (j << 4) | j;
- }
- else
- {
- m_main_palette[0] = data & 0x0f;
- m_main_palette[1] = (data & 0xf0) >> 4;
- }
- break;
- case 0x1d: // Palette colors 2 and 3
- // Bit 0-3 - Gray tone setting for main palette index 2
- // Bit 4-7 - Gray tone setting for main palette index 3
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- int i = 15 - (data & 0x0f);
- int j = 15 - ((data & 0xf0) >> 4);
- m_main_palette[2] = (i << 8) | (i << 4) | i;
- m_main_palette[3] = (j << 8) | (j << 4) | j;
- }
- else
- {
- m_main_palette[2] = data & 0x0f;
- m_main_palette[3] = (data & 0xf0) >> 4;
- }
- break;
- case 0x1e: // Palette colors 4 and 5
- // Bit 0-3 - Gray tone setting for main palette index 4
- // Bit 4-7 - Gray tone setting for main palette index 5
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- int i = 15 - (data & 0x0f);
- int j = 15 - ((data & 0xf0) >> 4);
- m_main_palette[4] = (i << 8) | (i << 4) | i;
- m_main_palette[5] = (j << 8) | (j << 4) | j;
- }
- else
- {
- m_main_palette[4] = data & 0x0f;
- m_main_palette[5] = (data & 0xf0) >> 4;
- }
- break;
- case 0x1f: // Palette colors 6 and 7
- // Bit 0-3 - Gray tone setting for main palette index 6
- // Bit 4-7 - Gray tone setting for main palette index 7
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- int i = 15 - (data & 0x0f);
- int j = 15 - ((data & 0xf0) >> 4);
- m_main_palette[6] = (i << 8) | (i << 4) | i;
- m_main_palette[7] = (j << 8) | (j << 4) | j;
- }
- else
- {
- m_main_palette[6] = data & 0x0f;
- m_main_palette[7] = (data & 0xf0) >> 4;
- }
- break;
- case 0x60: // Video mode
- // Bit 0-4 - Unknown
- // Bit 5 - Packed mode 0 = not packed mode, 1 = packed mode
- // Bit 6 - 4/16 colour mode select: 0 = 4 colour mode, 1 = 16 colour mode
- // Bit 7 - monochrome/colour mode select: 0 = monochrome mode, 1 = colour mode
- /*
- * 111 - packed, 16 color, use 4000/8000, color
- * 110 - not packed, 16 color, use 4000/8000, color
- * 101 - packed, 4 color, use 2000, color
- * 100 - not packed, 4 color, use 2000, color
- * 011 - packed, 16 color, use 4000/8000, monochrome
- * 010 - not packed, 16 color , use 4000/8000, monochrome
- * 001 - packed, 4 color, use 2000, monochrome
- * 000 - not packed, 4 color, use 2000, monochrome - Regular WS monochrome
- */
- if (m_vdp_type == VDP_TYPE_WSC)
- {
- m_color_mode = data & 0x80;
- m_colors_16 = data & 0x40;
- m_tile_packed = data & 0x20;
- }
- break;
- case 0xa2: // Timer control
- // Bit 0 - HBlank Timer enable
- // Bit 1 - HBlank Timer mode: 0 = one shot, 1 = auto reset
- // Bit 2 - VBlank Timer(1/75s) enable
- // Bit 3 - VBlank Timer mode: 0 = one shot, 1 = auto reset
- // Bit 4-7 - Unknown
- m_timer_hblank_enable = BIT(data, 0);
- m_timer_hblank_mode = BIT(data, 1);
- m_timer_vblank_enable = BIT(data, 2);
- m_timer_vblank_mode = BIT(data, 3);
- break;
- case 0xa4: // HBlank timer frequency reload value (bits 0-7)
- m_timer_hblank_reload &= 0xff00;
- m_timer_hblank_reload += data;
- m_timer_hblank_count = m_timer_hblank_reload;
- break;
- case 0xa5: // HBlank timer frequency reload value (bits 8-15)
- m_timer_hblank_reload &= 0xff;
- m_timer_hblank_reload += data << 8;
- m_timer_hblank_count = m_timer_hblank_reload;
- break;
- case 0xa6: // VBlank timer frequency reload value (bits 0-7)
- m_timer_vblank_reload &= 0xff00;
- m_timer_vblank_reload += data;
- m_timer_vblank_count = m_timer_vblank_reload;
- break;
- case 0xa7: // VBlank timer frequency reload value (bits 8-15)
- m_timer_vblank_reload &= 0xff;
- m_timer_vblank_reload += data << 8;
- m_timer_vblank_count = m_timer_vblank_reload;
- break;
- case 0xa8: // HBlank counter (bits 0-7)
- case 0xa9: // HBlank counter (bits 8-15)
- case 0xaa: // VBlank counter (bits 0-7)
- case 0xab: // VBlank counter (bits 8-15)
- break;
- }
-
- m_regs[offset] = data;
-}
-
-
-void wswan_video_device::scanline_interrupt()
-{
- if (m_current_line < 144)
- refresh_scanline();
-
- // Decrement 12kHz (HBlank) counter
- if (m_timer_hblank_enable && m_timer_hblank_reload != 0)
- {
- m_timer_hblank_count--;
- logerror("timer_hblank_count: %X\n", m_timer_hblank_count);
- if (m_timer_hblank_count == 0)
- {
- if (m_timer_hblank_mode)
- m_timer_hblank_count = m_timer_hblank_reload;
- else
- m_timer_hblank_reload = 0;
-
- logerror( "triggering hbltmr interrupt\n" );
- m_set_irq_cb(WSWAN_VIDEO_IFLAG_HBLTMR);
- }
- }
-
- // Handle Sound DMA
- m_snd_dma_cb();
-
-// m_current_line = (m_current_line + 1) % 159;
-
- if (m_current_line == 144) // buffer sprite table
- {
- memcpy(m_sprite_table_buffer, &m_vram[m_sprite_table_address], 512);
- m_sprite_first = m_sprite_first_latch; // always zero?
- m_sprite_count = m_sprite_count_latch;
- }
-
- if (m_current_line == 144)
- {
- m_set_irq_cb(WSWAN_VIDEO_IFLAG_VBL);
- /* Decrement 75Hz (VBlank) counter */
- if (m_timer_vblank_enable && m_timer_vblank_reload != 0)
- {
- m_timer_vblank_count--;
- logerror("timer_vblank_count: %X\n", m_timer_vblank_count);
- if (m_timer_vblank_count == 0)
- {
- if (m_timer_vblank_mode)
- m_timer_vblank_count = m_timer_vblank_reload;
- else
- m_timer_vblank_reload = 0;
-
- logerror("triggering vbltmr interrupt\n");
- m_set_irq_cb(WSWAN_VIDEO_IFLAG_VBLTMR);
- }
- }
- }
-
-// m_current_line = (m_current_line + 1) % 159;
-
- if (m_current_line == m_line_compare)
- m_set_irq_cb(WSWAN_VIDEO_IFLAG_LCMP);
-
- m_current_line = (m_current_line + 1) % 159;
-}
-
-
-READ8_MEMBER(wswan_video_device::vram_r)
-{
- return m_vram[offset];
-}
-
-WRITE8_MEMBER(wswan_video_device::vram_w)
-{
- m_vram[offset] = data;
-}