diff options
Diffstat (limited to 'src/mame/video/midtview.ipp')
| -rw-r--r-- | src/mame/video/midtview.ipp | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/mame/video/midtview.ipp b/src/mame/video/midtview.ipp new file mode 100644 index 00000000000..02da31bf928 --- /dev/null +++ b/src/mame/video/midtview.ipp @@ -0,0 +1,280 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +/************************************************************************* + + DMA-Blitter Viewer for Midway T-unit, W-unit, and X-unit games. + +**************************************************************************/ + +#if DEBUG_MIDTUNIT_BLITTER +void midtunit_video_device::device_reset() +{ + m_dma_debug = false; + m_doing_debug_dma = false; + memset(&m_debug_dma_state, 0, sizeof(dma_state)); + m_debug_dma_state.gfxrom = m_gfxrom->base(); + m_debug_dma_state.offset = 0; + m_debug_dma_state.rowbits = 0; + m_debug_dma_state.width = 256; + m_debug_dma_state.height = 256; + m_debug_dma_state.palette = 0x0100; + m_debug_dma_state.color = 0x0001; + m_debug_dma_state.yflip = 0; + + m_debug_dma_state.xpos = 0; + m_debug_dma_state.ypos = 0; + m_debug_dma_state.preskip = 0; + m_debug_dma_state.postskip = 0; + m_debug_dma_state.topclip = 0; + m_debug_dma_state.botclip = 0xffff; + m_debug_dma_state.leftclip = 0; + m_debug_dma_state.rightclip = 0xffff; + m_debug_dma_state.startskip = 0; + m_debug_dma_state.endskip = 0; + m_debug_dma_state.xstep = 0x100; + m_debug_dma_state.ystep = 0x100; + + m_debug_dma_bpp = 0; + m_debug_dma_mode = 1; + m_debug_dma_command = 0; +} + +void midtunit_video_device::device_add_mconfig(machine_config &config) +{ + screen_device &debugscreen(SCREEN(config, "debugscreen", SCREEN_TYPE_RASTER)); + debugscreen.set_raw(8000000 * 2, 506, 100, 500, 289, 20, 274); + debugscreen.set_screen_update(FUNC(midtunit_video_device::debug_screen_update)); + + PALETTE(config, m_debug_palette, 32768).set_format(PALETTE_FORMAT_xRRRRRGGGGGBBBBB); +} + +void midwunit_video_device::device_add_mconfig(machine_config &config) +{ + screen_device &debugscreen(SCREEN(config, "debugscreen", SCREEN_TYPE_RASTER)); + debugscreen.set_raw(8000000, 506, 101, 501, 289, 20, 274); + debugscreen.set_screen_update(FUNC(midwunit_video_device::debug_screen_update)); + + PALETTE(config, m_debug_palette, 32768).set_format(PALETTE_FORMAT_xRRRRRGGGGGBBBBB); +} + +void midtunit_video_device::do_debug_blit() +{ + m_dma_state = m_debug_dma_state; + m_debug_dma_command = m_debug_dma_mode * 8 + m_debug_dma_bpp; + m_doing_debug_dma = true; + memset(&m_debug_videoram[0], 0, 0x100000); + ((this)->*(m_dma_draw_noskip_noscale[m_debug_dma_command]))(); + m_doing_debug_dma = false; +} + +void midtunit_video_device::do_dma_debug_inputs() +{ + static const char* const mode_strs[0x20] = { + "None", "P0", "P1", "P0P1", "C0", "C0", "C0P1", "C0P1", "C1", "P0C1", "C1", "P0C1", "C0C1", "C0C1", "C0C1", "C0C1", + "None", "P0F", "P1F", "P0P1F", "C0F", "C0F", "C0P1F", "C0P1F", "C1F", "P0C1F", "C1F", "P0C1F", "C0C1F", "C0C1F", "C0C1F", "C0C1F" + }; + + bool do_blit = false; + if (machine().input().code_pressed_once(KEYCODE_M)) + { + m_dma_debug = !m_dma_debug; + if (m_dma_debug) + { + for (pen_t i = 0; i < 32768; i++) + { + m_debug_palette->set_pen_color(i, m_palette->pen_color(i)); + } + do_blit = true; + } + } + else if (machine().input().code_pressed_once(KEYCODE_O)) + { + m_debug_dma_state.rowbits++; + do_blit = true; + popmessage("DMA RowBits: %d", m_debug_dma_state.rowbits); + } + else if (machine().input().code_pressed_once(KEYCODE_U)) + { + m_debug_dma_state.rowbits--; + if (m_debug_dma_state.rowbits < 0) + m_debug_dma_state.rowbits = 0; + else + do_blit = true; + popmessage("DMA RowBits: %d", m_debug_dma_state.rowbits); + } + else if (machine().input().code_pressed_once(KEYCODE_PGDN)) + { + m_debug_dma_state.offset += 0x10000; + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_PGUP)) + { + uint32_t old_offset = m_debug_dma_state.offset; + m_debug_dma_state.offset -= 0x10000; + if (old_offset < m_debug_dma_state.offset) + m_debug_dma_state.offset = 0; + else + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_END)) + { + m_debug_dma_state.offset += 0x100; + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_HOME)) + { + uint32_t old_offset = m_debug_dma_state.offset; + m_debug_dma_state.offset -= 0x100; + if (old_offset < m_debug_dma_state.offset) + m_debug_dma_state.offset = 0; + else + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_DEL)) + { + m_debug_dma_state.offset++; + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_INSERT)) + { + uint32_t old_offset = m_debug_dma_state.offset; + m_debug_dma_state.offset--; + if (old_offset < m_debug_dma_state.offset) + m_debug_dma_state.offset = 0; + else + do_blit = true; + popmessage("DMA Offset: %08x", m_debug_dma_state.offset); + } + else if (machine().input().code_pressed_once(KEYCODE_RIGHT)) + { + m_debug_dma_state.width += machine().input().code_pressed(KEYCODE_LCONTROL) ? 16 : 1; + if (m_debug_dma_state.width > 512) + m_debug_dma_state.width = 512; + else + do_blit = true; + popmessage("DMA Width: %d", m_debug_dma_state.width); + } + else if (machine().input().code_pressed_once(KEYCODE_LEFT)) + { + m_debug_dma_state.width -= machine().input().code_pressed(KEYCODE_LCONTROL) ? 16 : 1; + if (m_debug_dma_state.width < 0) + m_debug_dma_state.width = 0; + else + do_blit = true; + popmessage("DMA Width: %d", m_debug_dma_state.width); + } + else if (machine().input().code_pressed_once(KEYCODE_UP)) + { + m_debug_dma_state.height += machine().input().code_pressed(KEYCODE_LCONTROL) ? 16 : 1; + if (m_debug_dma_state.height > 512) + m_debug_dma_state.height = 512; + else + do_blit = true; + popmessage("DMA Height: %d", m_debug_dma_state.height); + } + else if (machine().input().code_pressed_once(KEYCODE_DOWN)) + { + m_debug_dma_state.height -= machine().input().code_pressed(KEYCODE_LCONTROL) ? 16 : 1; + if (m_debug_dma_state.height < 0) + m_debug_dma_state.height = 0; + else + do_blit = true; + popmessage("DMA Height: %d", m_debug_dma_state.height); + } + else if (machine().input().code_pressed_once(KEYCODE_I)) + { + m_debug_dma_state.palette += 0x0100; + do_blit = true; + popmessage("DMA Palette: %04x", m_debug_dma_state.palette); + } + else if (machine().input().code_pressed_once(KEYCODE_K)) + { + m_debug_dma_state.palette -= 0x0100; + do_blit = true; + popmessage("DMA Palette: %04x", m_debug_dma_state.palette); + } + else if (machine().input().code_pressed_once(KEYCODE_L)) + { + m_debug_dma_state.color++; + if (m_debug_dma_state.color == 0x0100) + m_debug_dma_state.color = 0; + do_blit = true; + popmessage("DMA Color: %02x", m_debug_dma_state.color); + } + else if (machine().input().code_pressed_once(KEYCODE_J)) + { + m_debug_dma_state.color--; + if (m_debug_dma_state.color == 0xffff) + m_debug_dma_state.color = 0x00ff; + do_blit = true; + popmessage("DMA Color: %02x", m_debug_dma_state.color); + } + else if (machine().input().code_pressed_once(KEYCODE_H)) + { + m_debug_dma_bpp++; + if (m_debug_dma_bpp > 7) + m_debug_dma_bpp = 7; + else + do_blit = true; + popmessage("DMA BitsPerPixel: %d", m_debug_dma_bpp ? m_debug_dma_bpp : 8); + } + else if (machine().input().code_pressed_once(KEYCODE_G)) + { + m_debug_dma_bpp--; + if (m_debug_dma_bpp < 0) + m_debug_dma_bpp = 0; + else + do_blit = true; + popmessage("DMA BitsPerPixel: %d", m_debug_dma_bpp ? m_debug_dma_bpp : 8); + } + else if (machine().input().code_pressed_once(KEYCODE_Y)) + { + m_debug_dma_mode++; + if (m_debug_dma_mode > 0x1f) + m_debug_dma_mode = 0x1f; + else + do_blit = true; + popmessage("DMA Mode: %s (%02x)", mode_strs[m_debug_dma_mode], m_debug_dma_mode); + } + else if (machine().input().code_pressed_once(KEYCODE_T)) + { + m_debug_dma_mode--; + if (m_debug_dma_mode < 0) + m_debug_dma_mode = 0; + else + do_blit = true; + popmessage("DMA Mode: %s (%02x)", mode_strs[m_debug_dma_mode], m_debug_dma_mode); + } + else if (machine().input().code_pressed_once(KEYCODE_F)) + { + m_debug_dma_state.yflip = 1 - m_debug_dma_state.yflip; + do_blit = true; + } + + if (do_blit) + do_debug_blit(); +} + +uint32_t midtunit_video_device::debug_screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + do_dma_debug_inputs(); + const pen_t *pens = m_debug_palette->pens(); + for (int y = 0; y <= cliprect.max_y; y++) + { + uint32_t *dest = &bitmap.pix32(y); + uint16_t *src = &m_debug_videoram[y * 512]; + for (int x = 0; x < cliprect.max_x; x++) + { + *dest = pens[*src & 0x7fff]; + src++; + dest++; + } + } + return 0; +} +#endif |