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-rw-r--r--src/mess/video/x68k.c1267
1 files changed, 0 insertions, 1267 deletions
diff --git a/src/mess/video/x68k.c b/src/mess/video/x68k.c
deleted file mode 100644
index fce9998286a..00000000000
--- a/src/mess/video/x68k.c
+++ /dev/null
@@ -1,1267 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Barry Rodewald,Carl
-/*
-
- Sharp X68000 video functions
- driver by Barry Rodewald
-
- X68000 video hardware (there are some minor revisions to these custom chips across various X680x0 models):
- Custom sprite controller "Cynthia"
- Custom CRT controller "Vinas / Vicon"
- Custom video controller "VSOP / VIPS"
- Custom video data selector "Cathy"
-
- In general terms:
- 1 "Text" layer - effectively a 4bpp bitmap split into 4 planes at 1bpp each
- 512kB "text" VRAM
- can write to multiple planes at once
- can copy one character line to another character line
- is 1024x1024 in size
- Up to 4 graphic layers - can be 4 layers with a 16 colour palette, 2 layers with a 256 colour palette,
- or 1 layer at 16-bit RGB.
- 512k graphic VRAM
- all layers are 512x512, but at 16 colours, the 4 layers can be combined into 1 1024x1024 layer
- one or more layers can be cleared at once quickly with a simple hardware function
- 2 tilemapped layers - can be 8x8 or 16x16, 16 colours per tile, max 256 colours overall
- 1 sprite layer - up to 128 16x16 sprites, 16 colours per sprite, maximum 16 sprites per scanline (not yet implemented).
-
- Questions: What do the other bits in m_video.reg[2] do?
- What is "special priority mode"?
- How is the intensity applied during blending if at all?
- Black appears to be opaque only at priority 2 but not 3, is that right?
- Are the gfx layers blended from the bottom up or all at once?
-
-*/
-
-#include "emu.h"
-
-#include "machine/mc68901.h"
-#include "includes/x68k.h"
-#include "machine/ram.h"
-
-
-PALETTE_DECODER_MEMBER(x68k_state, GGGGGRRRRRBBBBBI)
-{
- UINT8 i = raw & 1;
- UINT8 r = pal6bit(((raw >> 5) & 0x3e) | i);
- UINT8 g = pal6bit(((raw >> 10) & 0x3e) | i);
- UINT8 b = pal6bit(((raw >> 0) & 0x3e) | i);
- return rgb_t(r, g, b);
-}
-
-inline void x68k_state::x68k_plot_pixel(bitmap_rgb32 &bitmap, int x, int y, UINT32 color)
-{
- bitmap.pix32(y, x) = (UINT16)color;
-}
-/*
-bitmap_rgb32* ::x68k_get_gfx_page(int pri,int type)
-{
- if(type == GFX16)
- {
- switch(pri)
- {
- case 0:
- return x68k_gfx_0_bitmap_16;
- case 1:
- return x68k_gfx_1_bitmap_16;
- case 2:
- return x68k_gfx_2_bitmap_16;
- case 3:
- return x68k_gfx_3_bitmap_16;
- default:
- return x68k_gfx_0_bitmap_16; // should never reach here.
- }
- }
- if(type == GFX256)
- {
- switch(pri)
- {
- case 0:
- case 1:
- return x68k_gfx_0_bitmap_256;
- case 2:
- case 3:
- return x68k_gfx_1_bitmap_256;
- default:
- return x68k_gfx_0_bitmap_256; // should never reach here.
- }
- }
- if(type == GFX65536)
- return x68k_gfx_0_bitmap_65536;
-
- return NULL; // should never reach here either.
-}
-*/
-void x68k_state::x68k_crtc_text_copy(int src, int dest, UINT8 planes)
-{
- // copys one raster in T-VRAM to another raster
- int src_ram = src * 256; // 128 bytes per scanline
- int dest_ram = dest * 256;
-
- // update RAM in each plane
- if(planes & 1)
- memcpy(&m_tvram[dest_ram],&m_tvram[src_ram],512);
- if(planes & 2)
- memcpy(&m_tvram[dest_ram+0x10000],&m_tvram[src_ram+0x10000],512);
- if(planes & 4)
- memcpy(&m_tvram[dest_ram+0x20000],&m_tvram[src_ram+0x20000],512);
- if(planes & 8)
- memcpy(&m_tvram[dest_ram+0x30000],&m_tvram[src_ram+0x30000],512);
-}
-
-TIMER_CALLBACK_MEMBER(x68k_state::x68k_crtc_operation_end)
-{
- int bit = param;
- m_crtc.operation &= ~bit;
-}
-
-void x68k_state::x68k_crtc_refresh_mode()
-{
-// rectangle rect;
-// double scantime;
- rectangle scr,visiblescr;
- int length;
-
- // Calculate data from register values
- m_crtc.vmultiple = 1;
- if((m_crtc.reg[20] & 0x10) != 0 && (m_crtc.reg[20] & 0x0c) == 0)
- m_crtc.vmultiple = 2; // 31.5kHz + 256 lines = doublescan
- if(m_crtc.interlace != 0)
- m_crtc.vmultiple = 0.5f; // 31.5kHz + 1024 lines or 15kHz + 512 lines = interlaced
- m_crtc.htotal = (m_crtc.reg[0] + 1) * 8;
- m_crtc.vtotal = (m_crtc.reg[4] + 1) / m_crtc.vmultiple; // default is 567 (568 scanlines)
- m_crtc.hbegin = (m_crtc.reg[2] * 8) + 1;
- m_crtc.hend = (m_crtc.reg[3] * 8);
- m_crtc.vbegin = (m_crtc.reg[6]) / m_crtc.vmultiple;
- m_crtc.vend = (m_crtc.reg[7] - 1) / m_crtc.vmultiple;
- if((m_crtc.vmultiple == 2) && !(m_crtc.reg[7] & 1)) // otherwise if the raster irq line == vblank line, the raster irq fires too late
- m_crtc.vend++;
- m_crtc.hsync_end = (m_crtc.reg[1]) * 8;
- m_crtc.vsync_end = (m_crtc.reg[5]) / m_crtc.vmultiple;
- m_crtc.hsyncadjust = m_crtc.reg[8];
- scr.set(0, m_crtc.htotal - 8, 0, m_crtc.vtotal);
- if(scr.max_y <= m_crtc.vend)
- scr.max_y = m_crtc.vend + 2;
- if(scr.max_x <= m_crtc.hend)
- scr.max_x = m_crtc.hend + 2;
- visiblescr.set(m_crtc.hbegin, m_crtc.hend, m_crtc.vbegin, m_crtc.vend);
-
- // expand visible area to the size indicated by CRTC reg 20
- length = m_crtc.hend - m_crtc.hbegin;
- if (length < m_crtc.width)
- {
- visiblescr.min_x = m_crtc.hbegin - ((m_crtc.width - length)/2);
- visiblescr.max_x = m_crtc.hend + ((m_crtc.width - length)/2);
- }
- length = m_crtc.vend - m_crtc.vbegin;
- if (length < m_crtc.height)
- {
- visiblescr.min_y = m_crtc.vbegin - ((m_crtc.height - length)/2);
- visiblescr.max_y = m_crtc.vend + ((m_crtc.height - length)/2);
- }
- // bounds check
- if(visiblescr.min_x < 0)
- visiblescr.min_x = 0;
- if(visiblescr.min_y < 0)
- visiblescr.min_y = 0;
- if(visiblescr.max_x >= scr.max_x)
- visiblescr.max_x = scr.max_x - 2;
- if(visiblescr.max_y >= scr.max_y - 1)
- visiblescr.max_y = scr.max_y - 2;
-
-// logerror("CRTC regs - %i %i %i %i - %i %i %i %i - %i - %i\n",m_crtc.reg[0],m_crtc.reg[1],m_crtc.reg[2],m_crtc.reg[3],
-// m_crtc.reg[4],m_crtc.reg[5],m_crtc.reg[6],m_crtc.reg[7],m_crtc.reg[8],m_crtc.reg[9]);
- logerror("video_screen_configure(machine.first_screen(),%i,%i,[%i,%i,%i,%i],55.45)\n",scr.max_x,scr.max_y,visiblescr.min_x,visiblescr.min_y,visiblescr.max_x,visiblescr.max_y);
- m_screen->configure(scr.max_x,scr.max_y,visiblescr,HZ_TO_ATTOSECONDS(55.45));
-}
-
-TIMER_CALLBACK_MEMBER(x68k_state::x68k_hsync)
-{
- int hstate = param;
- attotime hsync_time;
-
- m_crtc.hblank = hstate;
- m_mfpdev->i7_w(!m_crtc.hblank);
-
- if(m_crtc.operation & 8)
- x68k_crtc_text_copy((m_crtc.reg[22] & 0xff00) >> 8,(m_crtc.reg[22] & 0x00ff),(m_crtc.reg[21] & 0xf));
-
- if(m_crtc.vmultiple == 2) // 256-line (doublescan)
- {
- if(hstate == 1)
- {
- if(m_oddscanline == 1)
- {
- int scan = m_screen->vpos();
- if(scan > m_crtc.vend)
- scan = m_crtc.vbegin;
- hsync_time = m_screen->time_until_pos(scan,(m_crtc.htotal + m_crtc.hend) / 2);
- m_scanline_timer->adjust(hsync_time);
- if(scan != 0)
- {
- if((ioport("options")->read() & 0x04))
- {
- m_screen->update_partial(scan);
- }
- }
- }
- else
- {
- int scan = m_screen->vpos();
- if(scan > m_crtc.vend)
- scan = m_crtc.vbegin;
- hsync_time = m_screen->time_until_pos(scan,m_crtc.hend / 2);
- m_scanline_timer->adjust(hsync_time);
- if(scan != 0)
- {
- if((ioport("options")->read() & 0x04))
- {
- m_screen->update_partial(scan);
- }
- }
- }
- }
- if(hstate == 0)
- {
- if(m_oddscanline == 1)
- {
- int scan = m_screen->vpos();
- if(scan > m_crtc.vend)
- scan = m_crtc.vbegin;
- else
- scan++;
- hsync_time = m_screen->time_until_pos(scan,m_crtc.hbegin / 2);
- m_scanline_timer->adjust(hsync_time, 1);
- m_oddscanline = 0;
- }
- else
- {
- hsync_time = m_screen->time_until_pos(m_screen->vpos(),(m_crtc.htotal + m_crtc.hbegin) / 2);
- m_scanline_timer->adjust(hsync_time, 1);
- m_oddscanline = 1;
- }
- }
- }
- else // 512-line
- {
- if(hstate == 1)
- {
- int scan = m_screen->vpos();
- if(scan > m_crtc.vend)
- scan = 0;
- hsync_time = m_screen->time_until_pos(scan,m_crtc.hend);
- m_scanline_timer->adjust(hsync_time);
- if(scan != 0)
- {
- if((ioport("options")->read() & 0x04))
- {
- m_screen->update_partial(scan);
- }
- }
- }
- if(hstate == 0)
- {
- hsync_time = m_screen->time_until_pos(m_screen->vpos()+1,m_crtc.hbegin);
- m_scanline_timer->adjust(hsync_time, 1);
- }
- }
-}
-
-TIMER_CALLBACK_MEMBER(x68k_state::x68k_crtc_raster_end)
-{
- m_mfpdev->i6_w(1);
-}
-
-TIMER_CALLBACK_MEMBER(x68k_state::x68k_crtc_raster_irq)
-{
- int scan = param;
- attotime irq_time;
- attotime end_time;
-
- if(scan <= m_crtc.vtotal)
- {
- m_mfpdev->i6_w(0);
- m_screen->update_partial(scan);
- irq_time = m_screen->time_until_pos(scan,m_crtc.hbegin);
- // end of HBlank period clears GPIP6 also?
- end_time = m_screen->time_until_pos(scan,m_crtc.hend);
- m_raster_irq->adjust(irq_time, scan);
- timer_set(end_time, TIMER_X68K_CRTC_RASTER_END);
- logerror("GPIP6: Raster triggered at line %i (%i)\n",scan,m_screen->vpos());
- }
-}
-
-TIMER_CALLBACK_MEMBER(x68k_state::x68k_crtc_vblank_irq)
-{
- int val = param;
- attotime irq_time;
- int vblank_line;
-
- if(val == 1) // V-DISP on
- {
- m_crtc.vblank = 1;
- vblank_line = m_crtc.vbegin;
- irq_time = m_screen->time_until_pos(vblank_line,2);
- m_vblank_irq->adjust(irq_time);
- logerror("CRTC: VBlank on\n");
- }
- if(val == 0) // V-DISP off
- {
- m_crtc.vblank = 0;
- vblank_line = m_crtc.vend;
- if(vblank_line > m_crtc.vtotal)
- vblank_line = m_crtc.vtotal;
- irq_time = m_screen->time_until_pos(vblank_line,2);
- m_vblank_irq->adjust(irq_time, 1);
- logerror("CRTC: VBlank off\n");
- }
-
- m_mfpdev->tai_w(!m_crtc.vblank);
- m_mfpdev->i4_w(!m_crtc.vblank);
-}
-
-
-// CRTC "VINAS 1+2 / VICON" at 0xe80000
-/* 0xe80000 - Registers (all are 16-bit):
- * 0 - Horizontal Total (in characters)
- * 1 - Horizontal Sync End
- * 2 - Horizontal Display Begin
- * 3 - Horizontal Display End
- * 4 - Vertical Total (in scanlines)
- * 5 - Vertical Sync End
- * 6 - Vertical Display Begin
- * 7 - Vertical Display End
- * 8 - Fine Horizontal Sync Adjustment
- * 9 - Raster Line (for Raster IRQ mapped to MFP GPIP6)
- * 10/11 - Text Layer X and Y Scroll
- * 12/13 - Graphic Layer 0 X and Y Scroll
- * 14/15 - Graphic Layer 1 X and Y Scroll
- * 16/17 - Graphic Layer 2 X and Y Scroll
- * 18/19 - Graphic Layer 3 X and Y Scroll
- * 20 - bit 12 - Text VRAM mode : 0 = display, 1 = buffer
- * bit 11 - Graphic VRAM mode : 0 = display, 1 = buffer
- * bit 10 - "Real" screen size : 0 = 512x512, 1 = 1024x1024
- * bits 8,9 - Colour mode :
- * 00 = 16 colour 01 = 256 colour
- * 10 = Undefined 11 = 65,536 colour
- * bit 4 - Horizontal Frequency : 0 = 15.98kHz, 1 = 31.50kHz
- * bits 2,3 - Vertical dots :
- * 00 = 256 01 = 512
- * 10 or 11 = 1024 (interlaced)
- * bits 0,1 - Horizontal dots :
- * 00 = 256 01 = 512
- * 10 = 768 11 = 50MHz clock mode (Compact XVI or later)
- * 21 - bit 9 - Text Screen Access Mask Enable
- * bit 8 - Text Screen Simultaneous Plane Access Enable
- * bits 4-7 - Text Screen Simultaneous Plane Access Select
- * bits 0-3 - Text Screen Line Copy Plane Select
- * Graphic Screen High-speed Clear Page Select
- * 22 - Text Screen Line Copy
- * bits 15-8 - Source Line
- * bits 7-0 - Destination Line
- * 23 - Text Screen Mask Pattern
- *
- * 0xe80481 - Operation Port (8-bit):
- * bit 3 - Text Screen Line Copy Begin
- * bit 1 - Graphic Screen High-speed Clear Begin
- * bit 0 - Image Taking Begin (?)
- * Operation Port bits are cleared automatically when the requested
- * operation is completed.
- */
-WRITE16_MEMBER(x68k_state::x68k_crtc_w )
-{
- if (offset < 0x24)
- COMBINE_DATA(m_crtc.reg+offset);
- switch(offset)
- {
- case 0:
- case 1:
- case 2:
- case 3:
- case 4:
- case 5:
- case 6:
- case 7:
- case 8:
- x68k_crtc_refresh_mode();
- break;
- case 9: // CRTC raster IRQ (GPIP6)
- {
- attotime irq_time;
- data = m_crtc.reg[9];
- irq_time = m_screen->time_until_pos((data) / m_crtc.vmultiple,2);
-
- if(irq_time.as_double() > 0)
- m_raster_irq->adjust(irq_time, (data) / m_crtc.vmultiple);
- }
- logerror("CRTC: Write to raster IRQ register - %i\n",data);
- break;
- case 20:
- if(ACCESSING_BITS_0_7)
- {
- m_crtc.interlace = 0;
- switch(data & 0x0c)
- {
- case 0x00:
- m_crtc.height = 256;
- break;
- case 0x08:
- case 0x0c: // TODO: 1024 vertical, if horizontal freq = 31kHz
- m_crtc.height = 512;
- m_crtc.interlace = 1; // if 31kHz, 1024 lines = interlaced
- break;
- case 0x04:
- m_crtc.height = 512;
- if(!(m_crtc.reg[20] & 0x0010)) // if 15kHz, 512 lines = interlaced
- m_crtc.interlace = 1;
- break;
- }
- switch(data & 0x03)
- {
- case 0x00:
- m_crtc.width = 256;
- break;
- case 0x01:
- m_crtc.width = 512;
- break;
- case 0x02:
- case 0x03: // 0x03 = 50MHz clock mode (XVI only)
- m_crtc.width = 768;
- break;
- }
- }
-/* if(ACCESSING_BITS_8_15)
- {
- m_crtc.interlace = 0;
- if(data & 0x0400)
- m_crtc.interlace = 1;
- }*/
- x68k_crtc_refresh_mode();
- break;
- case 576: // operation register
- m_crtc.operation = data;
- if(data & 0x02) // high-speed graphic screen clear
- {
- memset(&m_gvram[0],0,0x40000);
- timer_set(attotime::from_msec(10), TIMER_X68K_CRTC_OPERATION_END, 0x02); // time taken to do operation is a complete guess.
- }
- break;
- }
-// logerror("CRTC: [%08x] Wrote %04x to CRTC register %i\n",m_maincpu->safe_pc(),data,offset);
-}
-
-READ16_MEMBER(x68k_state::x68k_crtc_r )
-{
- if(offset < 24)
- {
-// logerror("CRTC: [%08x] Read %04x from CRTC register %i\n",m_maincpu->safe_pc(),m_crtc.reg[offset],offset);
- switch(offset)
- {
- case 9:
- return 0;
- case 10: // Text X/Y scroll
- case 11:
- case 12: // Graphic layer 0 scroll
- case 13:
- return m_crtc.reg[offset] & 0x3ff;
- case 14: // Graphic layer 1 scroll
- case 15:
- case 16: // Graphic layer 2 scroll
- case 17:
- case 18: // Graphic layer 3 scroll
- case 19:
- return m_crtc.reg[offset] & 0x1ff;
- default:
- return m_crtc.reg[offset];
- }
- }
- if(offset == 576) // operation port, operation bits are set to 0 when operation is complete
- return m_crtc.operation;
-// logerror("CRTC: [%08x] Read from unknown CRTC register %i\n",activecpu_get_pc(),offset);
- return 0xffff;
-}
-
-WRITE16_MEMBER(x68k_state::x68k_gvram_w )
-{
-// int xloc,yloc,pageoffset;
- /*
- G-VRAM usage is determined by colour depth and "real" screen size.
-
- For screen size of 1024x1024, all G-VRAM space is used, in one big page.
- At 1024x1024 real screen size, colour depth is always 4bpp, and ranges from
- 0xc00000-0xdfffff.
-
- For screen size of 512x512, the colour depth determines the page usage.
- 16 colours = 4 pages
- 256 colours = 2 pages
- 65,536 colours = 1 page
- Page 1 - 0xc00000-0xc7ffff Page 2 - 0xc80000-0xcfffff
- Page 3 - 0xd00000-0xd7ffff Page 4 - 0xd80000-0xdfffff
- */
-
- // handle different G-VRAM page setups
- if(m_crtc.reg[20] & 0x0800) // G-VRAM set to buffer
- {
- if(offset < 0x40000)
- COMBINE_DATA(&m_gvram[offset]);
- }
- else
- {
- switch(m_crtc.reg[20] & 0x0300)
- {
- case 0x0300:
- if(offset < 0x40000)
- COMBINE_DATA(&m_gvram[offset]);
- break;
- case 0x0100:
- if(offset < 0x40000)
- {
- m_gvram[offset] = (m_gvram[offset] & 0xff00) | (data & 0x00ff);
- }
- if(offset >= 0x40000 && offset < 0x80000)
- {
- m_gvram[offset-0x40000] = (m_gvram[offset-0x40000] & 0x00ff) | ((data & 0x00ff) << 8);
- }
- break;
- case 0x0000:
- if(offset < 0x40000)
- {
- m_gvram[offset] = (m_gvram[offset] & 0xfff0) | (data & 0x000f);
- }
- if(offset >= 0x40000 && offset < 0x80000)
- {
- m_gvram[offset-0x40000] = (m_gvram[offset-0x40000] & 0xff0f) | ((data & 0x000f) << 4);
- }
- if(offset >= 0x80000 && offset < 0xc0000)
- {
- m_gvram[offset-0x80000] = (m_gvram[offset-0x80000] & 0xf0ff) | ((data & 0x000f) << 8);
- }
- if(offset >= 0xc0000 && offset < 0x100000)
- {
- m_gvram[offset-0xc0000] = (m_gvram[offset-0xc0000] & 0x0fff) | ((data & 0x000f) << 12);
- }
- break;
- default:
- logerror("G-VRAM written while layer setup is undefined.\n");
- }
- }
-}
-
-WRITE16_MEMBER(x68k_state::x68k_tvram_w )
-{
- UINT16 text_mask;
-
- text_mask = ~(m_crtc.reg[23]) & mem_mask;
-
- if(!(m_crtc.reg[21] & 0x0200)) // text access mask enable
- text_mask = 0xffff & mem_mask;
-
- mem_mask = text_mask;
-
- if(m_crtc.reg[21] & 0x0100)
- { // simultaneous T-VRAM plane access (I think ;))
- int plane,wr;
- offset = offset & 0x00ffff;
- wr = (m_crtc.reg[21] & 0x00f0) >> 4;
- for(plane=0;plane<4;plane++)
- {
- if(wr & (1 << plane))
- {
- COMBINE_DATA(&m_tvram[offset+0x10000*plane]);
- }
- }
- }
- else
- {
- COMBINE_DATA(&m_tvram[offset]);
- }
-}
-
-READ16_MEMBER(x68k_state::x68k_gvram_r )
-{
- UINT16 ret = 0;
-
- if(m_crtc.reg[20] & 0x0800) // G-VRAM set to buffer
- return m_gvram[offset];
-
- switch(m_crtc.reg[20] & 0x0300) // colour setup determines G-VRAM use
- {
- case 0x0300: // 65,536 colour (RGB) - 16-bits per word
- if(offset < 0x40000)
- ret = m_gvram[offset];
- else
- ret = 0xffff;
- break;
- case 0x0100: // 256 colour (paletted) - 8 bits per word
- if(offset < 0x40000)
- ret = m_gvram[offset] & 0x00ff;
- if(offset >= 0x40000 && offset < 0x80000)
- ret = (m_gvram[offset-0x40000] & 0xff00) >> 8;
- if(offset >= 0x80000)
- ret = 0xffff;
- break;
- case 0x0000: // 16 colour (paletted) - 4 bits per word
- if(offset < 0x40000)
- ret = m_gvram[offset] & 0x000f;
- if(offset >= 0x40000 && offset < 0x80000)
- ret = (m_gvram[offset-0x40000] & 0x00f0) >> 4;
- if(offset >= 0x80000 && offset < 0xc0000)
- ret = (m_gvram[offset-0x80000] & 0x0f00) >> 8;
- if(offset >= 0xc0000 && offset < 0x100000)
- ret = (m_gvram[offset-0xc0000] & 0xf000) >> 12;
- break;
- default:
- logerror("G-VRAM read while layer setup is undefined.\n");
- ret = 0xffff;
- }
-
- return ret;
-}
-
-READ16_MEMBER(x68k_state::x68k_tvram_r )
-{
- return m_tvram[offset];
-}
-
-WRITE16_MEMBER(x68k_state::x68k_spritereg_w )
-{
- COMBINE_DATA(&m_spritereg[offset]);
- switch(offset)
- {
- case 0x400:
- m_bg0_8->set_scrollx(0,(data - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- m_bg0_16->set_scrollx(0,(data - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- break;
- case 0x401:
- m_bg0_8->set_scrolly(0,(data - m_crtc.vbegin) & 0x3ff);
- m_bg0_16->set_scrolly(0,(data - m_crtc.vbegin) & 0x3ff);
- break;
- case 0x402:
- m_bg1_8->set_scrollx(0,(data - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- m_bg1_16->set_scrollx(0,(data - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- break;
- case 0x403:
- m_bg1_8->set_scrolly(0,(data - m_crtc.vbegin) & 0x3ff);
- m_bg1_16->set_scrolly(0,(data - m_crtc.vbegin) & 0x3ff);
- break;
- case 0x406: // BG H-DISP (normally equals CRTC reg 2 value + 4)
- if(data != 0x00ff)
- {
- m_crtc.bg_visible_width = (m_crtc.reg[3] - ((data & 0x003f) - 4)) * 8;
- m_crtc.bg_hshift = ((data - (m_crtc.reg[2]+4)) * 8);
- if(m_crtc.bg_hshift > 0)
- m_crtc.bg_hshift = 0;
- }
- break;
- case 0x407: // BG V-DISP (like CRTC reg 6)
- m_crtc.bg_vshift = m_crtc.vshift;
- break;
- case 0x408: // BG H/V-Res
- m_crtc.bg_hvres = data & 0x1f;
- if(data != 0xff)
- { // Handle when the PCG is using 256 and the CRTC is using 512
- if((m_crtc.bg_hvres & 0x0c) == 0x00 && (m_crtc.reg[20] & 0x0c) == 0x04)
- m_crtc.bg_double = 2;
- else
- m_crtc.bg_double = 1;
- }
- else
- m_crtc.bg_double = 1;
- break;
- }
-}
-
-READ16_MEMBER(x68k_state::x68k_spritereg_r )
-{
- if(offset >= 0x400 && offset < 0x404)
- return m_spritereg[offset] & 0x3ff;
- return m_spritereg[offset];
-}
-
-WRITE16_MEMBER(x68k_state::x68k_spriteram_w )
-{
- COMBINE_DATA(m_spriteram+offset);
- m_video.tile8_dirty[offset / 16] = 1;
- m_video.tile16_dirty[offset / 64] = 1;
- if(offset < 0x2000)
- {
- m_bg1_8->mark_all_dirty();
- m_bg1_16->mark_all_dirty();
- m_bg0_8->mark_all_dirty();
- m_bg0_16->mark_all_dirty();
- }
- if(offset >= 0x2000 && offset < 0x3000)
- {
- m_bg1_8->mark_tile_dirty(offset & 0x0fff);
- m_bg1_16->mark_tile_dirty(offset & 0x0fff);
- }
- if(offset >= 0x3000)
- {
- m_bg0_8->mark_tile_dirty(offset & 0x0fff);
- m_bg0_16->mark_tile_dirty(offset & 0x0fff);
- }
-}
-
-READ16_MEMBER(x68k_state::x68k_spriteram_r )
-{
- return m_spriteram[offset];
-}
-
-void x68k_state::x68k_draw_text(bitmap_rgb32 &bitmap, int xscr, int yscr, rectangle rect)
-{
- unsigned int line,pixel; // location on screen
- UINT32 loc; // location in TVRAM
- UINT32 colour;
- int bit;
-
- for(line=rect.min_y;line<=rect.max_y;line++) // per scanline
- {
- // adjust for scroll registers
- loc = (((line - m_crtc.vbegin) + yscr) & 0x3ff) * 64;
- loc += (xscr / 16) & 0x7f;
- loc &= 0xffff;
- bit = 15 - (xscr & 0x0f);
- for(pixel=rect.min_x;pixel<=rect.max_x;pixel++) // per pixel
- {
- colour = (((m_tvram[loc] >> bit) & 0x01) ? 1 : 0)
- + (((m_tvram[loc+0x10000] >> bit) & 0x01) ? 2 : 0)
- + (((m_tvram[loc+0x20000] >> bit) & 0x01) ? 4 : 0)
- + (((m_tvram[loc+0x30000] >> bit) & 0x01) ? 8 : 0);
- // Colour 0 is displayable if the text layer is at the priority level 2
- if((m_pcgpalette->pen(colour) & 0xffffff) || ((m_video.reg[1] & 0x0c00) == 0x0800))
- bitmap.pix32(line, pixel) = m_pcgpalette->pen(colour);
- bit--;
- if(bit < 0)
- {
- bit = 15;
- loc++;
- loc &= 0xffff;
- }
- }
- }
-}
-
-bool x68k_state::x68k_draw_gfx_scanline( bitmap_ind16 &bitmap, rectangle cliprect, UINT8 priority)
-{
- int pixel;
- int page;
- UINT32 loc; // location in GVRAM
- UINT32 lineoffset;
- UINT16 xscr,yscr;
- UINT16 colour = 0;
- int shift;
- int scanline;
- bool blend, ret = false;
- UINT16 *pal = (UINT16 *)m_gfxpalette->basemem().base();
-
- for(scanline=cliprect.min_y;scanline<=cliprect.max_y;scanline++) // per scanline
- {
- if(m_crtc.reg[20] & 0x0400) // 1024x1024 "real" screen size - use 1024x1024 16-colour gfx layer
- {
- // adjust for scroll registers
- if(m_video.reg[2] & 0x0010 && priority == m_video.gfxlayer_pri[0])
- {
- xscr = (m_crtc.reg[12] & 0x3ff);
- yscr = (m_crtc.reg[13] & 0x3ff);
- lineoffset = (((scanline - m_crtc.vbegin) + yscr) & 0x3ff) * 1024;
- loc = xscr & 0x3ff;
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- switch(lineoffset & 0xc0000)
- {
- case 0x00000:
- colour = m_gvram[lineoffset + (loc & 0x3ff)] & 0x000f;
- break;
- case 0x40000:
- colour = (m_gvram[(lineoffset - 0x40000) + (loc & 0x3ff)] & 0x00f0) >> 4;
- break;
- case 0x80000:
- colour = (m_gvram[(lineoffset - 0x80000) + (loc & 0x3ff)] & 0x0f00) >> 8;
- break;
- case 0xc0000:
- colour = (m_gvram[(lineoffset - 0xc0000) + (loc & 0x3ff)] & 0xf000) >> 12;
- break;
- }
- if(colour || (priority == 3))
- bitmap.pix16(scanline, pixel) = colour;
- loc++;
- loc &= 0x3ff;
- }
- }
- }
- else // else 512x512 "real" screen size
- {
- if(m_video.reg[2] & (1 << priority))
- {
- page = m_video.gfxlayer_pri[priority];
- // adjust for scroll registers
- switch(m_video.reg[0] & 0x03)
- {
- case 0x00: // 16 colours
- xscr = ((m_crtc.reg[12+(page*2)])) & 0x1ff;
- yscr = ((m_crtc.reg[13+(page*2)])) & 0x1ff;
- lineoffset = (((scanline - m_crtc.vbegin) + yscr) & 0x1ff) * 512;
- loc = xscr & 0x1ff;
- shift = 4;
- if((m_video.reg[2] & 0x1a00) == 0x1a00)
- ret = true;
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- colour = ((m_gvram[lineoffset + loc] >> page*shift) & 0x000f);
- if(ret && (colour & 1))
- {
- blend = true;
- colour &= 0xfe;
- }
- else
- blend = false;
- if(colour || (priority == 3))
- {
- if(ret)
- {
- if(blend && bitmap.pix16(scanline, pixel))
- bitmap.pix16(scanline, pixel) = ((bitmap.pix16(scanline, pixel) >> 1) & 0x7bde) + ((pal[colour] >> 1) & 0x7bde) + 1;
- else
- bitmap.pix16(scanline, pixel) = (pal[colour] & 0xfffe) + blend;
- }
- else
- bitmap.pix16(scanline, pixel) = colour;
- }
- loc++;
- loc &= 0x1ff;
- }
- break;
- case 0x01: // 256 colours
- if(page == 0 || page == 2)
- {
- xscr = ((m_crtc.reg[12+(page*2)])) & 0x1ff;
- yscr = ((m_crtc.reg[13+(page*2)])) & 0x1ff;
- lineoffset = (((scanline - m_crtc.vbegin) + yscr) & 0x1ff) * 512;
- loc = xscr & 0x1ff;
- shift = 4;
- if((m_video.reg[2] & 0x1a00) == 0x1a00)
- ret = true;
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- colour = ((m_gvram[lineoffset + loc] >> page*shift) & 0x00ff);
- if(ret && (colour & 1))
- {
- blend = true;
- colour &= 0xfe;
- }
- else
- blend = false;
- if(colour || (priority == 3))
- {
- if(ret)
- {
- if(blend && bitmap.pix16(scanline, pixel))
- bitmap.pix16(scanline, pixel) = ((bitmap.pix16(scanline, pixel) >> 1) & 0x7bde) + ((pal[colour] >> 1) & 0x7bde) + 1;
- else
- bitmap.pix16(scanline, pixel) = (pal[colour] & 0xfffe) + blend;
- }
- else
- bitmap.pix16(scanline, pixel) = colour;
- }
- loc++;
- loc &= 0x1ff;
- }
- }
- break;
- case 0x03: // 65536 colours
- xscr = ((m_crtc.reg[12])) & 0x1ff;
- yscr = ((m_crtc.reg[13])) & 0x1ff;
- lineoffset = (((scanline - m_crtc.vbegin) + yscr) & 0x1ff) * 512;
- loc = xscr & 0x1ff;
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- colour = m_gvram[lineoffset + loc];
- if(colour || (priority == 3))
- bitmap.pix16(scanline, pixel) = colour;
- loc++;
- loc &= 0x1ff;
- }
- break;
- }
- }
- }
- }
- return ret;
-}
-
-void x68k_state::x68k_draw_gfx(bitmap_rgb32 &bitmap,rectangle cliprect)
-{
- int priority, scanline, pixel;
- bool gfxblend=false;
- //rectangle rect;
- //int xscr,yscr;
- //int gpage;
-
- if(m_crtc.reg[20] & 0x0800) // if graphic layers are set to buffer, then they aren't visible
- return;
-
- m_gfxbitmap->fill(0, cliprect);
-
- for(priority=3;priority>=0;priority--)
- {
- gfxblend = x68k_draw_gfx_scanline(*m_gfxbitmap,cliprect,priority);
- }
-
- for(scanline=cliprect.min_y;scanline<=cliprect.max_y;scanline++)
- {
- UINT16 colour;
- bool blend = false;
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- if((m_video.reg[0] & 0x03) == 3)
- {
- colour = m_gfxbitmap->pix16(scanline, pixel);
- if(colour || (m_video.gfx_pri == 2))
- bitmap.pix32(scanline, pixel) = GGGGGRRRRRBBBBBI_decoder(colour);
- }
- else if(gfxblend)
- {
- colour = m_gfxbitmap->pix16(scanline, pixel);
- if(((m_video.reg[2] & 0x1900) == 0x1900) && (m_video.gfx_pri != 2) && (colour & 1))
- blend = true;
- else
- blend = false;
- if(colour || (m_video.gfx_pri == 2))
- {
- if(blend)
- bitmap.pix32(scanline, pixel) = ((bitmap.pix32(scanline, pixel) >> 1) & 0xff7f7f7f) + ((pal555(colour, 6, 11, 1) >> 1) & 0x7f7f7f);
- else
- bitmap.pix32(scanline, pixel) = pal555(colour, 6, 11, 1);
- }
- }
- else
- {
- colour = m_gfxbitmap->pix16(scanline, pixel) & 0xff;
- if(((m_video.reg[2] & 0x1900) == 0x1900) && (m_video.gfx_pri != 2) && (colour & 1))
- {
- blend = true;
- colour &= 0xfe;
- }
- else
- blend = false;
- if((colour && (m_gfxpalette->pen(colour) & 0xffffff)) || (m_video.gfx_pri == 2))
- {
- if(blend)
- bitmap.pix32(scanline, pixel) = ((bitmap.pix32(scanline, pixel) >> 1) & 0xff7f7f7f) + ((m_gfxpalette->pen(colour) >> 1) & 0x7f7f7f);
- else
- bitmap.pix32(scanline, pixel) = m_gfxpalette->pen(colour);
- }
- }
- }
- }
-}
-
-// Sprite controller "Cynthia" at 0xeb0000
-void x68k_state::x68k_draw_sprites(bitmap_ind16 &bitmap, int priority, rectangle cliprect)
-{
- /*
- 0xeb0000 - 0xeb07ff - Sprite registers (up to 128)
- + 00 : b9-0, Sprite X position
- + 02 : b9-0, Sprite Y position
- + 04 : b15, Vertical Reversing (flipping?)
- b14, Horizontal Reversing
- b11-8, Sprite colour
- b7-0, Sprite tile code (in PCG)
- + 06 : b1-0, Priority
- 00 = Sprite not displayed
-
- 0xeb0800 - BG0 X Scroll (10-bit)
- 0xeb0802 - BG0 Y Scroll
- 0xeb0804 - BG1 X Scroll
- 0xeb0806 - BG1 Y Scroll
- 0xeb0808 - BG control
- b9, BG/Sprite display (RAM and register access is faster if 1)
- b4, PCG area 1 available
- b3, BG1 display enable
- b1, PCG area 0 available
- b0, BG0 display enable
- 0xeb080a - Horizontal total (like CRTC reg 0 - is 0xff if in 256x256?)
- 0xeb080c - Horizontal display position (like CRTC reg 2 - +4)
- 0xeb080e - Vertical display position (like CRTC reg 6)
- 0xeb0810 - Resolution setting
- b4, "L/H" (apparently 15kHz/31kHz switch for sprites/BG?)
- b3-2, V-Res
- b1-0, H-Res (0 = 8x8 tilemaps, 1 = 16x16 tilemaps, 2 or 3 = unknown)
- */
- int ptr,pri;
-
- for(ptr=508;ptr>=0;ptr-=4) // stepping through sprites
- {
- pri = m_spritereg[ptr+3] & 0x03;
-#ifdef MAME_DEBUG
- if(!(machine().input().code_pressed(KEYCODE_I)))
-#endif
- if(pri == priority)
- { // if at the right priority level, draw the sprite
- rectangle rect;
- int code = m_spritereg[ptr+2] & 0x00ff;
- int colour = (m_spritereg[ptr+2] & 0x0f00) >> 8;
- int xflip = m_spritereg[ptr+2] & 0x4000;
- int yflip = m_spritereg[ptr+2] & 0x8000;
- int sx = (m_spritereg[ptr+0] & 0x3ff) - 16;
- int sy = (m_spritereg[ptr+1] & 0x3ff) - 16;
-
- rect.min_x=m_crtc.hshift;
- rect.min_y=m_crtc.vshift;
- rect.max_x=rect.min_x + m_crtc.visible_width-1;
- rect.max_y=rect.min_y + m_crtc.visible_height-1;
-
- sx += m_crtc.bg_hshift;
- sx += m_sprite_shift;
-
- m_gfxdecode->gfx(1)->zoom_transpen(bitmap,cliprect,code,colour,xflip,yflip,m_crtc.hbegin+sx,m_crtc.vbegin+(sy*m_crtc.bg_double),0x10000,0x10000*m_crtc.bg_double,0x00);
- }
- }
-}
-
-static const gfx_layout x68k_pcg_8 =
-{
- 8,8,
- 256,
- 4,
- { 0,1,2,3 },
- { 8,12,0,4,24,28,16,20 },
- { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
- 32*8
-};
-
-static const gfx_layout x68k_pcg_16 =
-{
- 16,16,
- 256,
- 4,
- { 0,1,2,3 },
- { 8,12,0,4,24,28,16,20,8+64*8,12+64*8,64*8,4+64*8,24+64*8,28+64*8,16+64*8,20+64*8 },
- { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
- 8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 },
- 128*8
-};
-
-TILE_GET_INFO_MEMBER(x68k_state::x68k_get_bg0_tile)
-{
- int code = m_spriteram[0x3000+tile_index] & 0x00ff;
- int colour = (m_spriteram[0x3000+tile_index] & 0x0f00) >> 8;
- int flags = (m_spriteram[0x3000+tile_index] & 0xc000) >> 14;
- SET_TILE_INFO_MEMBER(0,code,colour,flags);
-}
-
-TILE_GET_INFO_MEMBER(x68k_state::x68k_get_bg1_tile)
-{
- int code = m_spriteram[0x2000+tile_index] & 0x00ff;
- int colour = (m_spriteram[0x2000+tile_index] & 0x0f00) >> 8;
- int flags = (m_spriteram[0x2000+tile_index] & 0xc000) >> 14;
- SET_TILE_INFO_MEMBER(0,code,colour,flags);
-}
-
-TILE_GET_INFO_MEMBER(x68k_state::x68k_get_bg0_tile_16)
-{
- int code = m_spriteram[0x3000+tile_index] & 0x00ff;
- int colour = (m_spriteram[0x3000+tile_index] & 0x0f00) >> 8;
- int flags = (m_spriteram[0x3000+tile_index] & 0xc000) >> 14;
- SET_TILE_INFO_MEMBER(1,code,colour,flags);
-}
-
-TILE_GET_INFO_MEMBER(x68k_state::x68k_get_bg1_tile_16)
-{
- int code = m_spriteram[0x2000+tile_index] & 0x00ff;
- int colour = (m_spriteram[0x2000+tile_index] & 0x0f00) >> 8;
- int flags = (m_spriteram[0x2000+tile_index] & 0xc000) >> 14;
- SET_TILE_INFO_MEMBER(1,code,colour,flags);
-}
-
-VIDEO_START_MEMBER(x68k_state,x68000)
-{
- int gfx_index;
-
- for (gfx_index = 0; gfx_index < MAX_GFX_ELEMENTS; gfx_index++)
- if (m_gfxdecode->gfx(gfx_index) == 0)
- break;
-
- /* create the char set (gfx will then be updated dynamically from RAM) */
- m_gfxdecode->set_gfx(gfx_index, global_alloc(gfx_element(m_pcgpalette, x68k_pcg_8, memregion("user1")->base(), 0, 32, 0)));
-
- gfx_index++;
-
- m_gfxdecode->set_gfx(gfx_index, global_alloc(gfx_element(m_pcgpalette, x68k_pcg_16, memregion("user1")->base(), 0, 32, 0)));
- m_gfxdecode->gfx(gfx_index)->set_colors(32);
-
- /* Tilemaps */
- m_bg0_8 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(x68k_state::x68k_get_bg0_tile),this),TILEMAP_SCAN_ROWS,8,8,64,64);
- m_bg1_8 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(x68k_state::x68k_get_bg1_tile),this),TILEMAP_SCAN_ROWS,8,8,64,64);
- m_bg0_16 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(x68k_state::x68k_get_bg0_tile_16),this),TILEMAP_SCAN_ROWS,16,16,64,64);
- m_bg1_16 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(x68k_state::x68k_get_bg1_tile_16),this),TILEMAP_SCAN_ROWS,16,16,64,64);
-
- m_bg0_8->set_transparent_pen(0);
- m_bg1_8->set_transparent_pen(0);
- m_bg0_16->set_transparent_pen(0);
- m_bg1_16->set_transparent_pen(0);
-
- m_pcgbitmap = auto_bitmap_ind16_alloc(machine(), 1024, 1024);
- m_pcgbitmap->fill(0);
-
- m_gfxbitmap = auto_bitmap_ind16_alloc(machine(), 1024, 1024);
- m_gfxbitmap->fill(0);
-
-// m_scanline_timer->adjust(attotime::zero, 0, attotime::from_hz(55.45)/568);
-}
-
-UINT32 x68k_state::screen_update_x68000(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
-{
- rectangle rect(0,0,0,0);
- int priority;
- int xscr,yscr;
- int x;
- tilemap_t* x68k_bg0;
- tilemap_t* x68k_bg1;
- int pixel, scanline;
- //UINT8 *rom;
-
- if((m_spritereg[0x408] & 0x03) == 0x00) // Sprite/BG H-Res 0=8x8, 1=16x16, 2 or 3 = undefined.
- {
- x68k_bg0 = m_bg0_8;
- x68k_bg1 = m_bg1_8;
- }
- else
- {
- x68k_bg0 = m_bg0_16;
- x68k_bg1 = m_bg1_16;
- }
-// rect.max_x=m_crtc.width;
-// rect.max_y=m_crtc.height;
- bitmap.fill(0, cliprect);
-
- if(m_sysport.contrast == 0) // if monitor contrast is 0, then don't bother displaying anything
- return 0;
-
- rect.min_x=m_crtc.hbegin;
- rect.min_y=m_crtc.vbegin;
-// rect.max_x=rect.min_x + m_crtc.visible_width-1;
-// rect.max_y=rect.min_y + m_crtc.visible_height-1;
- rect.max_x=m_crtc.hend;
- rect.max_y=m_crtc.vend;
-
- if(rect.min_y < cliprect.min_y)
- rect.min_y = cliprect.min_y;
- if(rect.max_y > cliprect.max_y)
- rect.max_y = cliprect.max_y;
-
- // update tiles
- //rom = memregion("user1")->base();
- for(x=0;x<256;x++)
- {
- if(m_video.tile16_dirty[x] != 0)
- {
- m_gfxdecode->gfx(1)->mark_dirty(x);
- m_video.tile16_dirty[x] = 0;
- }
- if(m_video.tile8_dirty[x] != 0)
- {
- m_gfxdecode->gfx(0)->mark_dirty(x);
- m_video.tile8_dirty[x] = 0;
- }
- }
-
-
- for(priority=2;priority>=0;priority--)
- {
- // Graphics screen(s)
- if(priority == m_video.gfx_pri)
- x68k_draw_gfx(bitmap,rect);
-
- // Sprite / BG Tiles
- if(priority == m_video.sprite_pri /*&& (m_spritereg[0x404] & 0x0200)*/ && (m_video.reg[2] & 0x0040))
- {
- m_pcgbitmap->fill(0, rect);
- x68k_draw_sprites(*m_pcgbitmap,1,rect);
- if((m_spritereg[0x404] & 0x0008))
- {
- if((m_spritereg[0x404] & 0x0030) == 0x10) // BG1 TXSEL
- {
- x68k_bg0->set_scrollx(0,(m_spritereg[0x402] - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- x68k_bg0->set_scrolly(0,(m_spritereg[0x403] - m_crtc.vbegin) & 0x3ff);
- x68k_bg0->draw(screen, *m_pcgbitmap,rect,0,0);
- }
- else
- {
- x68k_bg1->set_scrollx(0,(m_spritereg[0x402] - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- x68k_bg1->set_scrolly(0,(m_spritereg[0x403] - m_crtc.vbegin) & 0x3ff);
- x68k_bg1->draw(screen, *m_pcgbitmap,rect,0,0);
- }
- }
- x68k_draw_sprites(*m_pcgbitmap,2,rect);
- if((m_spritereg[0x404] & 0x0001))
- {
- if((m_spritereg[0x404] & 0x0006) == 0x02) // BG0 TXSEL
- {
- x68k_bg0->set_scrollx(0,(m_spritereg[0x400] - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- x68k_bg0->set_scrolly(0,(m_spritereg[0x401] - m_crtc.vbegin) & 0x3ff);
- x68k_bg0->draw(screen, *m_pcgbitmap,rect,0,0);
- }
- else
- {
- x68k_bg1->set_scrollx(0,(m_spritereg[0x400] - m_crtc.hbegin - m_crtc.bg_hshift) & 0x3ff);
- x68k_bg1->set_scrolly(0,(m_spritereg[0x401] - m_crtc.vbegin) & 0x3ff);
- x68k_bg1->draw(screen, *m_pcgbitmap,rect,0,0);
- }
- }
- x68k_draw_sprites(*m_pcgbitmap,3,rect);
-
- for(scanline=rect.min_y;scanline<=rect.max_y;scanline++)
- {
- for(pixel=m_crtc.hbegin;pixel<=m_crtc.hend;pixel++)
- {
- UINT8 colour = m_pcgbitmap->pix16(scanline, pixel) & 0xff;
- if((colour && (m_pcgpalette->pen(colour) & 0xffffff)) || ((m_video.reg[1] & 0x3000) == 0x2000))
- bitmap.pix32(scanline, pixel) = m_pcgpalette->pen(colour);
- }
- }
- }
-
- // Text screen
- if(m_video.reg[2] & 0x0020 && priority == m_video.text_pri)
- {
- xscr = (m_crtc.reg[10] & 0x3ff);
- yscr = (m_crtc.reg[11] & 0x3ff);
- if(!(m_crtc.reg[20] & 0x1000)) // if text layer is set to buffer, then it's not visible
- x68k_draw_text(bitmap,xscr,yscr,rect);
- }
- }
-
-#ifdef MAME_DEBUG
- if(machine().input().code_pressed(KEYCODE_9))
- {
- m_sprite_shift--;
- popmessage("Sprite shift = %i",m_sprite_shift);
- }
- if(machine().input().code_pressed(KEYCODE_0))
- {
- m_sprite_shift++;
- popmessage("Sprite shift = %i",m_sprite_shift);
- }
-
-#endif
-
-#ifdef MAME_DEBUG
-// popmessage("Layer priorities [%04x] - Txt: %i Spr: %i Gfx: %i Layer Pri0-3: %i %i %i %i",m_video.reg[1],m_video.text_pri,m_video.sprite_pri,
-// m_video.gfx_pri,m_video.gfxlayer_pri[0],m_video.gfxlayer_pri[1],m_video.gfxlayer_pri[2],m_video.gfxlayer_pri[3]);
-// popmessage("CRTC regs - %i %i %i %i - %i %i %i %i - %i - %i",m_crtc.reg[0],m_crtc.reg[1],m_crtc.reg[2],m_crtc.reg[3],
-// m_crtc.reg[4],m_crtc.reg[5],m_crtc.reg[6],m_crtc.reg[7],m_crtc.reg[8],m_crtc.reg[9]);
-// popmessage("Visible resolution = %ix%i (%s) Screen size = %ix%i",m_crtc.visible_width,m_crtc.visible_height,m_crtc.interlace ? "Interlaced" : "Non-interlaced",m_crtc.video_width,m_crtc.video_height);
-// popmessage("VBlank : scanline = %i",m_scanline);
-// popmessage("CRTC/BG compare H-TOTAL %i/%i H-DISP %i/%i V-DISP %i/%i BG Res %02x",m_crtc.reg[0],m_spritereg[0x405],m_crtc.reg[2],m_spritereg[0x406],
-// m_crtc.reg[6],m_spritereg[0x407],m_spritereg[0x408]);
-// popmessage("BG Scroll - BG0 X %i Y %i BG1 X %i Y %i",m_spriteram[0x400],m_spriteram[0x401],m_spriteram[0x402],m_spriteram[0x403]);
-// popmessage("uPD72065 status = %02x",upd765_status_r(machine(), space, 0));
-// popmessage("Layer enable - 0x%02x",m_video.reg[2] & 0xff);
-// popmessage("Graphic layer scroll - %i, %i - %i, %i - %i, %i - %i, %i",
-// m_crtc.reg[12],m_crtc.reg[13],m_crtc.reg[14],m_crtc.reg[15],m_crtc.reg[16],m_crtc.reg[17],m_crtc.reg[18],m_crtc.reg[19]);
-// popmessage("IOC IRQ status - %02x",m_ioc.irqstatus);
-// popmessage("RAM: mouse data - %02x %02x %02x %02x",m_ram->pointer()[0x931],m_ram->pointer()[0x930],m_ram->pointer()[0x933],m_ram->pointer()[0x932]);
-#endif
- return 0;
-}