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Diffstat (limited to 'src/mame/video/eprom.cpp')
-rw-r--r--src/mame/video/eprom.cpp414
1 files changed, 0 insertions, 414 deletions
diff --git a/src/mame/video/eprom.cpp b/src/mame/video/eprom.cpp
deleted file mode 100644
index 3975aef10e2..00000000000
--- a/src/mame/video/eprom.cpp
+++ /dev/null
@@ -1,414 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Aaron Giles
-/***************************************************************************
-
- Atari Escape hardware
-
-****************************************************************************/
-
-#include "emu.h"
-#include "includes/eprom.h"
-
-
-/*************************************
- *
- * Palette
- *
- *************************************/
-
-void eprom_state::update_palette()
-{
- int color;
-
- for (color = 0; color < 0x800; ++color)
- {
- int i, r, g, b;
- uint16_t const data = m_paletteram[color];
-
- /* FIXME this is only a very crude approximation of the palette output.
- * The circuit involves a dozen transistors and probably has an output
- * which is quite different from this.
- * This is, however, good enough to match the video and description
- * of MAMETesters bug #02677.
- */
- i = (((data >> 12) & 15) + 1) * (4 - m_screen_intensity);
- if (i < 0)
- i = 0;
-
- r = ((data >> 8) & 15) * i / 4;
- g = ((data >> 4) & 15) * i / 4;
- b = ((data >> 0) & 15) * i / 4;
-
- m_palette->set_pen_color(color, r, g, b);
- }
-}
-
-
-
-/*************************************
- *
- * Tilemap callbacks
- *
- *************************************/
-
-TILE_GET_INFO_MEMBER(eprom_state::get_alpha_tile_info)
-{
- uint16_t data = m_alpha_tilemap->basemem_read(tile_index);
- int code = data & 0x3ff;
- int color = ((data >> 10) & 0x0f) | ((data >> 9) & 0x20);
- int opaque = data & 0x8000;
- SET_TILE_INFO_MEMBER(1, code, color, opaque ? TILE_FORCE_LAYER0 : 0);
-}
-
-
-TILE_GET_INFO_MEMBER(eprom_state::get_playfield_tile_info)
-{
- uint16_t data1 = m_playfield_tilemap->basemem_read(tile_index);
- uint16_t data2 = m_playfield_tilemap->extmem_read(tile_index) >> 8;
- int code = data1 & 0x7fff;
- int color = 0x10 + (data2 & 0x0f);
- SET_TILE_INFO_MEMBER(0, code, color, (data1 >> 15) & 1);
-}
-
-
-TILE_GET_INFO_MEMBER(eprom_state::guts_get_playfield_tile_info)
-{
- uint16_t data1 = m_playfield_tilemap->basemem_read(tile_index);
- uint16_t data2 = m_playfield_tilemap->extmem_read(tile_index) >> 8;
- int code = data1 & 0x7fff;
- int color = 0x10 + (data2 & 0x0f);
- SET_TILE_INFO_MEMBER(2, code, color, (data1 >> 15) & 1);
-}
-
-
-
-/*************************************
- *
- * Video system start
- *
- *************************************/
-
-const atari_motion_objects_config eprom_state::s_mob_config =
-{
- 0, /* index to which gfx system */
- 1, /* number of motion object banks */
- 1, /* are the entries linked? */
- 0, /* are the entries split? */
- 1, /* render in reverse order? */
- 0, /* render in swapped X/Y order? */
- 0, /* does the neighbor bit affect the next object? */
- 8, /* pixels per SLIP entry (0 for no-slip) */
- 0, /* pixel offset for SLIPs */
- 0, /* maximum number of links to visit/scanline (0=all) */
-
- 0x100, /* base palette entry */
- 0x100, /* maximum number of colors */
- 0, /* transparent pen index */
-
- {{ 0x03ff,0,0,0 }}, /* mask for the link */
- {{ 0,0x7fff,0,0 }}, /* mask for the code index */
- {{ 0,0,0x000f,0 }}, /* mask for the color */
- {{ 0,0,0xff80,0 }}, /* mask for the X position */
- {{ 0,0,0,0xff80 }}, /* mask for the Y position */
- {{ 0,0,0,0x0070 }}, /* mask for the width, in tiles*/
- {{ 0,0,0,0x0007 }}, /* mask for the height, in tiles */
- {{ 0,0,0,0x0008 }}, /* mask for the horizontal flip */
- {{ 0 }}, /* mask for the vertical flip */
- {{ 0,0,0x0070,0 }}, /* mask for the priority */
- {{ 0 }}, /* mask for the neighbor */
- {{ 0 }}, /* mask for absolute coordinates */
-
- {{ 0 }}, /* mask for the special value */
- 0 /* resulting value to indicate "special" */
-};
-
-VIDEO_START_MEMBER(eprom_state,eprom)
-{
- /* save states */
- save_item(NAME(m_screen_intensity));
- save_item(NAME(m_video_disable));
-}
-
-
-const atari_motion_objects_config eprom_state::s_guts_mob_config =
-{
- 0, /* index to which gfx system */
- 1, /* number of motion object banks */
- 1, /* are the entries linked? */
- 0, /* are the entries split? */
- 0, /* render in reverse order? */
- 0, /* render in swapped X/Y order? */
- 0, /* does the neighbor bit affect the next object? */
- 8, /* pixels per SLIP entry (0 for no-slip) */
- 0, /* pixel offset for SLIPs */
- 0, /* maximum number of links to visit/scanline (0=all) */
-
- 0x100, /* base palette entry */
- 0x100, /* maximum number of colors */
- 0, /* transparent pen index */
-
- {{ 0x03ff,0,0,0 }}, /* mask for the link */
- {{ 0,0x7fff,0,0 }}, /* mask for the code index */
- {{ 0,0,0x000f,0 }}, /* mask for the color */
- {{ 0,0,0xff80,0 }}, /* mask for the X position */
- {{ 0,0,0,0xff80 }}, /* mask for the Y position */
- {{ 0,0,0,0x0070 }}, /* mask for the width, in tiles*/
- {{ 0,0,0,0x000f }}, /* mask for the height, in tiles */
- {{ 0,0x8000,0,0 }}, /* mask for the horizontal flip */
- {{ 0 }}, /* mask for the vertical flip */
- {{ 0,0,0x0070,0 }}, /* mask for the priority */
- {{ 0 }}, /* mask for the neighbor */
- {{ 0 }}, /* mask for absolute coordinates */
-
- {{ 0 }}, /* mask for the special value */
- 0 /* resulting value to indicate "special" */
-};
-
-VIDEO_START_MEMBER(eprom_state,guts)
-{
- /* save states */
- save_item(NAME(m_screen_intensity));
- save_item(NAME(m_video_disable));
-}
-
-
-
-/*************************************
- *
- * Periodic scanline updater
- *
- *************************************/
-
-void eprom_state::scanline_update(screen_device &screen, int scanline)
-{
- /* update the playfield */
- if (scanline == 0)
- {
- int xscroll = (m_alpha_tilemap->basemem_read(0x780) >> 7) & 0x1ff;
- int yscroll = (m_alpha_tilemap->basemem_read(0x781) >> 7) & 0x1ff;
- m_playfield_tilemap->set_scrollx(0, xscroll);
- m_playfield_tilemap->set_scrolly(0, yscroll);
- m_mob->set_scroll(xscroll, yscroll);
- }
-}
-
-
-
-/*************************************
- *
- * Main refresh
- *
- *************************************/
-
-uint32_t eprom_state::screen_update_eprom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- if (m_video_disable)
- {
- bitmap.fill(m_palette->black_pen(), cliprect);
- return 0;
- }
-
- update_palette();
-
- // start drawing
- m_mob->draw_async(cliprect);
-
- /* draw the playfield */
- m_playfield_tilemap->draw(screen, bitmap, cliprect, 0, 0);
-
- // draw and merge the MO
- bitmap_ind16 &mobitmap = m_mob->bitmap();
- for (const sparse_dirty_rect *rect = m_mob->first_dirty_rect(cliprect); rect != nullptr; rect = rect->next())
- for (int y = rect->top(); y <= rect->bottom(); y++)
- {
- uint16_t *mo = &mobitmap.pix16(y);
- uint16_t *pf = &bitmap.pix16(y);
- for (int x = rect->left(); x <= rect->right(); x++)
- if (mo[x] != 0xffff)
- {
- /* verified from the GALs on the real PCB; equations follow
- *
- * --- FORCEMC0 forces 3 bits of the MO color to 0 under some conditions
- * FORCEMC0=!PFX3*PFX4*PFX5*!MPR0
- * +!PFX3*PFX5*!MPR1
- * +!PFX3*PFX4*!MPR0*!MPR1
- *
- * --- SHADE selects an alternate color bank for the playfield
- * !SHADE=!MPX0
- * +MPX1
- * +MPX2
- * +MPX3
- * +!MPX4*!MPX5*!MPX6*!MPX7
- * +FORCEMC0
- *
- * --- PF/M is 1 if playfield has priority, or 0 if MOs have priority
- * !PF/M=MPR0*MPR1
- * +PFX3
- * +!PFX4*MPR1
- * +!PFX5*MPR1
- * +!PFX5*MPR0
- * +!PFX4*!PFX5*!MPR0*!MPR1
- *
- * --- M7 is passed as the upper MO bit to the GPC ASIC
- * M7=MPX0*!MPX1*!MPX2*!MPX3
- *
- * --- CL10-9 are outputs from the GPC, specifying which layer to render
- * CL10 = 1 if pf
- * CL9 = 1 if mo
- *
- * --- CRA10 is the 0x200 bit of the color RAM index; it comes directly from the GPC
- * CRA10 = CL10
- *
- * --- CRA9 is the 0x100 bit of the color RAM index; is comes directly from the GPC
- * or if the SHADE flag is set, it affects the playfield color bank
- * CRA9 = SHADE*CL10
- * +CL9
- *
- * --- CRA8-1 are the low 8 bits of the color RAM index; set as expected
- */
- int mopriority = (mo[x] >> atari_motion_objects_device::PRIORITY_SHIFT) & 7;
- int pfpriority = (pf[x] >> 4) & 3;
- int forcemc0 = 0, shade = 1, pfm = 1, m7 = 0;
-
- /* upper bit of MO priority signals special rendering and doesn't draw anything */
- if (mopriority & 4)
- continue;
-
- /* compute the FORCEMC signal */
- if (!(pf[x] & 8))
- {
- if (((pfpriority == 3) && !(mopriority & 1)) ||
- ((pfpriority & 2) && !(mopriority & 2)) ||
- ((pfpriority & 1) && (mopriority == 0)))
- forcemc0 = 1;
- }
-
- /* compute the SHADE signal */
- if (((mo[x] & 0x0f) != 1) ||
- ((mo[x] & 0xf0) == 0) ||
- forcemc0)
- shade = 0;
-
- /* compute the PF/M signal */
- if ((mopriority == 3) ||
- (pf[x] & 8) ||
- (!(pfpriority & 1) && (mopriority & 2)) ||
- (!(pfpriority & 2) && (mopriority & 2)) ||
- (!(pfpriority & 2) && (mopriority & 1)) ||
- ((pfpriority == 0) && (mopriority == 0)))
- pfm = 0;
-
- /* compute the M7 signal */
- if ((mo[x] & 0x0f) == 1)
- m7 = 1;
-
- /* PF/M and M7 go in the GPC ASIC and select playfield or MO layers */
- if (!pfm && !m7)
- {
- if (!forcemc0)
- pf[x] = mo[x] & atari_motion_objects_device::DATA_MASK;
- else
- pf[x] = mo[x] & atari_motion_objects_device::DATA_MASK & ~0x70;
- }
- else
- {
- if (shade)
- pf[x] |= 0x100;
- if (m7)
- pf[x] |= 0x080;
- }
- }
- }
-
- /* add the alpha on top */
- m_alpha_tilemap->draw(screen, bitmap, cliprect, 0, 0);
-
- /* now go back and process the upper bit of MO priority */
- for (const sparse_dirty_rect *rect = m_mob->first_dirty_rect(cliprect); rect != nullptr; rect = rect->next())
- for (int y = rect->top(); y <= rect->bottom(); y++)
- {
- uint16_t *mo = &mobitmap.pix16(y);
- uint16_t *pf = &bitmap.pix16(y);
- for (int x = rect->left(); x <= rect->right(); x++)
- if (mo[x] != 0xffff)
- {
- int mopriority = mo[x] >> atari_motion_objects_device::PRIORITY_SHIFT;
-
- /* upper bit of MO priority might mean palette kludges */
- if (mopriority & 4)
- {
- /* if bit 2 is set, start setting high palette bits */
- if (mo[x] & 2)
- m_mob->apply_stain(bitmap, pf, mo, x, y);
- }
- }
- }
- return 0;
-}
-
-
-uint32_t eprom_state::screen_update_guts(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- if (m_video_disable)
- {
- bitmap.fill(m_palette->black_pen(), cliprect);
- return 0;
- }
-
- update_palette();
-
- // start drawing
- m_mob->draw_async(cliprect);
-
- /* draw the playfield */
- m_playfield_tilemap->draw(screen, bitmap, cliprect, 0, 0);
-
- // draw and merge the MO
- bitmap_ind16 &mobitmap = m_mob->bitmap();
- for (const sparse_dirty_rect *rect = m_mob->first_dirty_rect(cliprect); rect != nullptr; rect = rect->next())
- for (int y = rect->top(); y <= rect->bottom(); y++)
- {
- uint16_t *mo = &mobitmap.pix16(y);
- uint16_t *pf = &bitmap.pix16(y);
- for (int x = rect->left(); x <= rect->right(); x++)
- if (mo[x] != 0xffff)
- {
- int mopriority = (mo[x] >> atari_motion_objects_device::PRIORITY_SHIFT) & 7;
- int pfpriority = (pf[x] >> 5) & 3;
-
- /* upper bit of MO priority signals special rendering and doesn't draw anything */
- if (mopriority & 4)
- continue;
-
- /* check the priority */
- if (!(pf[x] & 8) || mopriority >= pfpriority)
- pf[x] = mo[x] & atari_motion_objects_device::DATA_MASK;
- }
- }
-
- /* add the alpha on top */
- m_alpha_tilemap->draw(screen, bitmap, cliprect, 0, 0);
-
- /* now go back and process the upper bit of MO priority */
- for (const sparse_dirty_rect *rect = m_mob->first_dirty_rect(cliprect); rect != nullptr; rect = rect->next())
- for (int y = rect->top(); y <= rect->bottom(); y++)
- {
- uint16_t *mo = &mobitmap.pix16(y);
- uint16_t *pf = &bitmap.pix16(y);
- for (int x = rect->left(); x <= rect->right(); x++)
- if (mo[x] != 0xffff)
- {
- int mopriority = mo[x] >> atari_motion_objects_device::PRIORITY_SHIFT;
-
- /* upper bit of MO priority might mean palette kludges */
- if (mopriority & 4)
- {
- /* if bit 2 is set, start setting high palette bits */
- if (mo[x] & 2)
- m_mob->apply_stain(bitmap, pf, mo, x, y);
- }
- }
- }
-
- return 0;
-}