diff options
Diffstat (limited to 'src/devices/machine/sunplus_gcm394_video.cpp')
-rw-r--r-- | src/devices/machine/sunplus_gcm394_video.cpp | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/src/devices/machine/sunplus_gcm394_video.cpp b/src/devices/machine/sunplus_gcm394_video.cpp index 4a4095aa9bd..44a574e99bf 100644 --- a/src/devices/machine/sunplus_gcm394_video.cpp +++ b/src/devices/machine/sunplus_gcm394_video.cpp @@ -285,7 +285,7 @@ void gcm394_base_video_device::draw(const rectangle &cliprect, uint32_t line, ui } else { - pen = machine().rand() & 0x1f; + //pen = machine().rand() & 0x1f; // 8bpp } @@ -518,10 +518,10 @@ uint32_t gcm394_base_video_device::screen_update(screen_device &screen, bitmap_r { memset(&m_screenbuf[320 * cliprect.min_y], 0, 4 * 320 * ((cliprect.max_y - cliprect.min_y) + 1)); - const uint32_t page1_addr = 0x40 * m_page1_addr; - const uint32_t page2_addr = 0x40 * m_page2_addr; - uint16_t* page1_regs = m_tmap0_regs; - uint16_t* page2_regs = m_tmap1_regs; + const uint32_t page0_addr = 0x40 * (m_page0_addr | (m_page0_addr_msb<<16)); + const uint32_t page1_addr = 0x40 * (m_page1_addr | (m_page1_addr_msb<<16)); + uint16_t* page0_regs = m_tmap0_regs; + uint16_t* page1_regs = m_tmap1_regs; for (uint32_t scanline = (uint32_t)cliprect.min_y; scanline <= (uint32_t)cliprect.max_y; scanline++) { @@ -529,8 +529,8 @@ uint32_t gcm394_base_video_device::screen_update(screen_device &screen, bitmap_r { if (1) { + draw_page(cliprect, scanline, i, page0_addr, page0_regs); draw_page(cliprect, scanline, i, page1_addr, page1_regs); - draw_page(cliprect, scanline, i, page2_addr, page2_regs); } draw_sprites(cliprect, scanline, i); } @@ -595,15 +595,16 @@ WRITE16_MEMBER(gcm394_base_video_device::tmap0_regs_w) write_tmap_regs(0, m_tmap0_regs, offset, data); } -WRITE16_MEMBER(gcm394_base_video_device::tmap0_unk0_w) +WRITE16_MEMBER(gcm394_base_video_device::tmap0_tilebase_lsb_w) { - LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap0_unk0_w %04x\n", machine().describe_context(), data); - m_page1_addr = data; + LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap0_tilebase_lsb_w %04x\n", machine().describe_context(), data); + m_page0_addr = data; } -WRITE16_MEMBER(gcm394_base_video_device::tmap0_unk1_w) +WRITE16_MEMBER(gcm394_base_video_device::tmap0_tilebase_msb_w) { - LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap0_unk1_w %04x\n", machine().describe_context(), data); + LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap0_tilebase_msb_w %04x\n", machine().describe_context(), data); + m_page0_addr_msb = data; } // **************************************** TILEMAP 1 ************************************************* @@ -616,15 +617,16 @@ WRITE16_MEMBER(gcm394_base_video_device::tmap1_regs_w) write_tmap_regs(1, m_tmap1_regs, offset, data); } -WRITE16_MEMBER(gcm394_base_video_device::tmap1_unk0_w) +WRITE16_MEMBER(gcm394_base_video_device::tmap1_tilebase_lsb_w) { - LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap1_unk0_w %04x\n", machine().describe_context(), data); - m_page2_addr = data; + LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap1_tilebase_lsb_w %04x\n", machine().describe_context(), data); + m_page1_addr = data; } -WRITE16_MEMBER(gcm394_base_video_device::tmap1_unk1_w) +WRITE16_MEMBER(gcm394_base_video_device::tmap1_tilebase_msb_w) { - LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap1_unk1_w %04x\n", machine().describe_context(), data); + LOGMASKED(LOG_GCM394_TMAP, "%s:gcm394_base_video_device::tmap1_tilebase_msb_w %04x\n", machine().describe_context(), data); + m_page1_addr_msb = data; } // **************************************** unknown video device 0 (another tilemap? sprite layer?) ************************************************* @@ -757,6 +759,11 @@ WRITE16_MEMBER(gcm394_base_video_device::video_dma_unk_w) } +READ16_MEMBER(gcm394_base_video_device::video_707c_r) +{ + LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_707c_r\n", machine().describe_context()); + return 0x8000; +} READ16_MEMBER(gcm394_base_video_device::video_707f_r) { LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_707f_r\n", machine().describe_context()); return m_707f; } @@ -791,7 +798,12 @@ WRITE16_MEMBER(gcm394_base_video_device::video_7063_w) WRITE16_MEMBER(gcm394_base_video_device::video_702a_w) { LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_702a_w %04x\n", machine().describe_context(), data); m_702a = data; } // read in IRQ -READ16_MEMBER(gcm394_base_video_device::video_7030_r) { LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_7030_r\n", machine().describe_context()); return m_7030; } +READ16_MEMBER(gcm394_base_video_device::video_7030_r) +{ + LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_7030_r\n", machine().describe_context()); + return 0x0000; /* wrlshunt ends up doing an explicit jump to 0000 shortly after boot if you just return the value written here, what is it? do we want to be returning non-zero to continue, with the problem being elsewhere, or is this the problem? */ +} + WRITE16_MEMBER(gcm394_base_video_device::video_7030_w) { LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_7030_w %04x\n", machine().describe_context(), data); m_7030 = data; } WRITE16_MEMBER(gcm394_base_video_device::video_703c_w) { LOGMASKED(LOG_GCM394_VIDEO, "%s:gcm394_base_video_device::video_703c_w %04x\n", machine().describe_context(), data); m_703c = data; } |