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-rw-r--r--src/devices/machine/spg110.cpp669
1 files changed, 669 insertions, 0 deletions
diff --git a/src/devices/machine/spg110.cpp b/src/devices/machine/spg110.cpp
new file mode 100644
index 00000000000..9f9256f4b27
--- /dev/null
+++ b/src/devices/machine/spg110.cpp
@@ -0,0 +1,669 @@
+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+/*****************************************************************************
+
+ SunPlus SPG110-series SoC peripheral emulation
+
+ 0032xx looks like it could be the same as 003dxx on spg2xx
+ but the video seems to have differences, and data
+ is fetched from private buffers filled by DMA instead of
+ main space? tile attributes different? palette format different
+
+**********************************************************************/
+
+#include "emu.h"
+#include "spg110.h"
+
+DEFINE_DEVICE_TYPE(SPG110, spg110_device, "spg110", "SPG110 System-on-a-Chip")
+
+spg110_device::spg110_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, type, tag, owner, clock)
+ , device_memory_interface(mconfig, *this)
+ , m_space_config("spg110", ENDIANNESS_BIG, 16, 32, 0, address_map_constructor(FUNC(spg110_device::map_video), this))
+ , m_cpu(*this, finder_base::DUMMY_TAG)
+ , m_screen(*this, finder_base::DUMMY_TAG)
+ , m_palette(*this, "palette")
+ , m_gfxdecode(*this, "gfxdecode")
+ , m_palram(*this, "palram")
+ , m_spg_io(*this, "spg_io")
+ , m_porta_out(*this)
+ , m_portb_out(*this)
+ , m_portc_out(*this)
+ , m_porta_in(*this)
+ , m_portb_in(*this)
+ , m_portc_in(*this)
+ , m_adc_in{{*this}, {*this}}
+ , m_chip_sel(*this)
+{
+}
+
+template<spg110_device::flipx_t FlipX>
+void spg110_device::blit(const rectangle &cliprect, uint32_t line, uint32_t xoff, uint32_t yoff, uint32_t attr, uint32_t ctrl, uint32_t bitmap_addr, uint16_t tile)
+{
+ address_space &space = m_cpu->space(AS_PROGRAM);
+
+ int32_t h = 8 << ((attr & PAGE_TILE_HEIGHT_MASK) >> PAGE_TILE_HEIGHT_SHIFT);
+ int32_t w = 8 << ((attr & PAGE_TILE_WIDTH_MASK) >> PAGE_TILE_WIDTH_SHIFT);
+
+ uint32_t yflipmask = attr & TILE_Y_FLIP ? h - 1 : 0;
+
+ uint32_t nc = ((attr & 0x0003) + 1) << 1;
+
+ uint32_t palette_offset = (attr & 0x0f00) >> 4;
+
+ palette_offset >>= nc;
+ palette_offset <<= nc;
+
+ uint32_t bits_per_row = nc * w / 16;
+ uint32_t words_per_tile = bits_per_row * h;
+ uint32_t m = bitmap_addr + words_per_tile * tile + bits_per_row * (line ^ yflipmask);
+ uint32_t bits = 0;
+ uint32_t nbits = 0;
+ uint32_t y = line;
+
+ int yy = (yoff + y) & 0x1ff;
+ if (yy >= 0x01c0)
+ yy -= 0x0200;
+
+ if (yy > 240 || yy < 0)
+ return;
+
+ int y_index = yy * 320;
+
+ for (int32_t x = FlipX ? (w - 1) : 0; FlipX ? x >= 0 : x < w; FlipX ? x-- : x++)
+ {
+ int xx = xoff + x;
+
+ bits <<= nc;
+
+ if (nbits < nc)
+ {
+ uint16_t b = space.read_word(m++ & 0x3fffff);
+ //b = (b << 8) | (b >> 8);
+ bits |= b << (nc - nbits);
+ nbits += 16;
+ }
+ nbits -= nc;
+
+ uint32_t pal = palette_offset + (bits >> 16);
+ bits &= 0xffff;
+
+ xx &= 0x01ff;
+ if (xx >= 0x01c0)
+ xx -= 0x0200;
+
+ if (xx >= 0 && xx < 320)
+ {
+ // TODO, this is completely wrong for this palette system
+ int pix_index = xx + y_index;
+ uint16_t rawpal = m_palram[pal];
+ const pen_t *pens = m_palette->pens();
+ uint32_t paldata = pens[pal];
+
+ if (!(rawpal & 0x8000))
+ {
+ m_screenbuf[pix_index] = paldata;
+ }
+ }
+ }
+}
+
+void spg110_device::blit_page(const rectangle &cliprect, uint32_t scanline, int depth, uint32_t bitmap_addr, uint16_t *regs)
+{
+ uint32_t xscroll = regs[0];
+ uint32_t yscroll = regs[1];
+ uint32_t attr = regs[2];
+ uint32_t ctrl = regs[3];
+ uint32_t tilemap = regs[4];
+ uint32_t palette_map = regs[5];
+ address_space &space2 = this->space(0);
+
+ if (!(ctrl & PAGE_ENABLE_MASK))
+ {
+ return;
+ }
+
+ if (((attr & PAGE_DEPTH_FLAG_MASK) >> PAGE_DEPTH_FLAG_SHIFT) != depth)
+ {
+ return;
+ }
+
+ uint32_t tile_h = 8 << ((attr & PAGE_TILE_HEIGHT_MASK) >> PAGE_TILE_HEIGHT_SHIFT);
+ uint32_t tile_w = 8 << ((attr & PAGE_TILE_WIDTH_MASK) >> PAGE_TILE_WIDTH_SHIFT);
+
+ uint32_t tile_count_x = 512 / tile_w;
+
+ uint32_t bitmap_y = (scanline + yscroll) & 0xff;
+ uint32_t y0 = bitmap_y / tile_h;
+ uint32_t tile_scanline = bitmap_y % tile_h;
+ uint32_t tile_address = tile_count_x * y0;
+
+ for (uint32_t x0 = 0; x0 < tile_count_x; x0++, tile_address++)
+ {
+ uint32_t yy = ((tile_h * y0 - yscroll + 0x10) & 0xff) - 0x10;
+ uint32_t xx = (tile_w * x0 - xscroll) & 0x1ff;
+ uint16_t tile = (ctrl & PAGE_WALLPAPER_MASK) ? space2.read_word(tilemap*2) : space2.read_word((tilemap + tile_address)*2);
+ uint16_t palette = 0;
+
+ if (!tile)
+ continue;
+
+ palette = space2.read_word(palette_map + tile_address / 2);
+ if (x0 & 1)
+ palette = (palette & 0xff00) >> 8;
+ else
+ palette = (palette & 0x00ff);
+
+
+ bool flip_x = 0;//(tileattr & TILE_X_FLIP);
+
+ if (flip_x)
+ blit<FlipXOn>(cliprect, tile_scanline, xx, yy, attr, ctrl, bitmap_addr, tile);
+ else
+ blit<FlipXOff>(cliprect, tile_scanline, xx, yy, attr, ctrl, bitmap_addr, tile);
+
+ }
+}
+
+
+/* correct, 4bpp gfxs */
+static const gfx_layout charlayout =
+{
+ 8,8,
+ RGN_FRAC(1,1),
+ 4,
+ { STEP4(0,1) },
+ { 0*4,1*4,2*4,3*4,4*4,5*4,6*4,7*4 },
+ { STEP8(0,4*8) },
+ 8*8*4
+};
+
+static const gfx_layout charlayout6 =
+{
+ 8,8,
+ RGN_FRAC(1,1),
+ 6,
+ { 0,1,2,3,4,5 },
+ { STEP8(0,6) },
+ { STEP8(0,6*8) },
+ 8*8*6
+};
+
+static const gfx_layout char16layout =
+{
+ 16,16,
+ RGN_FRAC(1,1),
+ 4,
+ { STEP4(0,1) },
+ { 0*4,1*4,2*4,3*4,4*4,5*4,6*4,7*4, 8*4,9*4,10*4,11*4,12*4,13*4,14*4,15*4 },
+ { STEP16(0,4*16) },
+ 16*16*4
+};
+
+static const gfx_layout char32layout =
+{
+ 32,32,
+ RGN_FRAC(1,1),
+ 4,
+ { STEP4(0,1) },
+ { STEP32(0,4) },
+ { STEP32(0,4*32) },
+ 32*32*4
+};
+
+
+
+static GFXDECODE_START( gfx )
+ GFXDECODE_ENTRY( ":maincpu", 0, charlayout, 0, 16 )
+ GFXDECODE_ENTRY( ":maincpu", 0, char16layout, 0, 16 )
+ GFXDECODE_ENTRY( ":maincpu", 0, char32layout, 0, 16 )
+ GFXDECODE_ENTRY( ":maincpu", 0, charlayout6, 0, 16 ) // correct for lots of the tiles inc. startup text
+GFXDECODE_END
+
+void spg110_device::configure_spg_io(spg2xx_io_device* io)
+{
+ io->porta_in().set(FUNC(spg110_device::porta_r));
+ io->portb_in().set(FUNC(spg110_device::portb_r));
+ io->portc_in().set(FUNC(spg110_device::portc_r));
+ io->porta_out().set(FUNC(spg110_device::porta_w));
+ io->portb_out().set(FUNC(spg110_device::portb_w));
+ io->portc_out().set(FUNC(spg110_device::portc_w));
+ io->adc_in<0>().set(FUNC(spg110_device::adc_r<0>));
+ io->adc_in<1>().set(FUNC(spg110_device::adc_r<1>));
+ io->chip_select().set(FUNC(spg110_device::cs_w));
+// io->pal_read_callback().set(FUNC(spg110_device::get_pal_r));
+// io->write_timer_irq_callback().set(FUNC(spg110_device::timerirq_w));
+// io->write_uart_adc_irq_callback().set(FUNC(spg110_device::uartirq_w));
+// io->write_external_irq_callback().set(FUNC(spg110_device::extirq_w));
+// io->write_ffrq_tmr1_irq_callback().set(FUNC(spg110_device::ffreq1_w));
+// io->write_ffrq_tmr2_irq_callback().set(FUNC(spg110_device::ffreq2_w));
+}
+
+void spg110_device::device_add_mconfig(machine_config &config)
+{
+// PALETTE(config, m_palette).set_format(palette_device::xRGB_555, 0x100);
+// PALETTE(config, m_palette).set_format(palette_device::RGB_565, 0x100);
+// PALETTE(config, m_palette).set_format(palette_device::IRGB_4444, 0x100);
+// PALETTE(config, m_palette).set_format(palette_device::RGBI_4444, 0x100);
+// PALETTE(config, m_palette).set_format(palette_device::xRGB_555, 0x100);
+ PALETTE(config, m_palette, palette_device::BLACK, 256);
+
+ GFXDECODE(config, m_gfxdecode, m_palette, gfx);
+
+ SPG24X_IO(config, m_spg_io, DERIVED_CLOCK(1, 1), m_cpu, m_screen);
+ configure_spg_io(m_spg_io);
+
+}
+
+
+device_memory_interface::space_config_vector spg110_device::memory_space_config() const
+{
+ return space_config_vector {
+ std::make_pair(0, &m_space_config)
+ };
+}
+
+spg110_device::spg110_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : spg110_device(mconfig, SPG110, tag, owner, clock)
+{
+}
+
+// irq source or similar?
+READ16_MEMBER(spg110_device::spg110_2063_r)
+{
+ // checks for bits 0x20 and 0x08 in the IRQ function (all IRQs point to the same place)
+ return 0x0008;
+}
+
+WRITE16_MEMBER(spg110_device::spg110_2063_w)
+{
+ // writes 0x28, probably clears the IRQ / IRQ sources? 0x63 is the same offset for this in spg2xx but bits used seem to be different
+ m_cpu->set_state_unsynced(UNSP_IRQ0_LINE, CLEAR_LINE);
+}
+
+
+WRITE16_MEMBER(spg110_device::spg110_201c_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2020_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2042_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2031_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2032_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2033_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2034_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2035_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2036_w) { COMBINE_DATA(&m_2036_scroll); }
+WRITE16_MEMBER(spg110_device::spg110_2039_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2037_w) { }
+WRITE16_MEMBER(spg110_device::spg110_203c_w) { }
+WRITE16_MEMBER(spg110_device::spg110_203d_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2045_w) { }
+
+
+WRITE16_MEMBER(spg110_device::spg110_2028_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2029_w) { }
+
+READ16_MEMBER(spg110_device::spg110_2028_r) { return 0x0000; }
+READ16_MEMBER(spg110_device::spg110_2029_r) { return 0x0000; }
+
+
+WRITE16_MEMBER(spg110_device::spg110_2050_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2051_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2052_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2053_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2054_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2055_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2056_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2057_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2058_w) { }
+WRITE16_MEMBER(spg110_device::spg110_2059_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205a_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205b_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205c_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205d_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205e_w) { }
+WRITE16_MEMBER(spg110_device::spg110_205f_w) { }
+
+WRITE16_MEMBER(spg110_device::dma_unk_2061_w) { COMBINE_DATA(&m_dma_unk_2061); }
+WRITE16_MEMBER(spg110_device::dma_dst_step_w) { COMBINE_DATA(&m_dma_dst_step); }
+WRITE16_MEMBER(spg110_device::dma_unk_2067_w) { COMBINE_DATA(&m_dma_unk_2067); }
+WRITE16_MEMBER(spg110_device::dma_src_step_w) { COMBINE_DATA(&m_dma_src_step); }
+
+WRITE16_MEMBER(spg110_device::dma_dst_w) { COMBINE_DATA(&m_dma_dst); }
+WRITE16_MEMBER(spg110_device::dma_src_w) { COMBINE_DATA(&m_dma_src); }
+
+WRITE16_MEMBER(spg110_device::dma_len_trigger_w)
+{
+ int length = data & 0x1fff;
+
+ // this is presumably a counter that underflows to 0x1fff, because that's what the wait loop waits for?
+ logerror("%s: (trigger len) %04x with values (unk) %04x (dststep) %04x (unk) %04x (src step) %04x | (dst) %04x (src) %04x\n", machine().describe_context(), data, m_dma_unk_2061, m_dma_dst_step, m_dma_unk_2067, m_dma_src_step, m_dma_dst, m_dma_src);
+
+ if ((m_dma_unk_2061!=0x0000) || (m_dma_unk_2067 != 0x0000))
+ fatalerror("unknown DMA params are not zero!\n");
+
+ int source = m_dma_src;
+ int dest = m_dma_dst;
+
+ for (int i = 0; i < length; i++)
+ {
+ address_space &mem = m_cpu->space(AS_PROGRAM);
+ uint16_t val = mem.read_word(source);
+
+ this->space(0).write_word(dest * 2, val, 0xffff);
+
+ source+=m_dma_src_step;
+ dest+=m_dma_dst_step;
+ }
+}
+
+READ16_MEMBER(spg110_device::dma_len_status_r)
+{
+ return 0x1fff; // DMA related?
+}
+
+READ16_MEMBER(spg110_device::spg110_2037_r) { return 0x0000; }
+READ16_MEMBER(spg110_device::spg110_2042_r) { return 0x0000; }
+
+
+WRITE16_MEMBER(spg110_device::spg110_3100_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3101_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3102_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3104_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3105_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3106_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3107_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3108_w) { }
+WRITE16_MEMBER(spg110_device::spg110_3109_w) { }
+WRITE16_MEMBER(spg110_device::spg110_310b_w) { }
+WRITE16_MEMBER(spg110_device::spg110_310c_w) { }
+WRITE16_MEMBER(spg110_device::spg110_310d_w) { }
+
+READ16_MEMBER(spg110_device::spg110_310f_r) { return 0x0000; }
+
+READ16_MEMBER(spg110_device::tmap0_regs_r) { return tmap0_regs[offset]; }
+READ16_MEMBER(spg110_device::tmap1_regs_r) { return tmap1_regs[offset]; }
+
+void spg110_device::tilemap_write_regs(int which, uint16_t* regs, int regno, uint16_t data)
+{
+ switch (regno)
+ {
+ case 0x0: // Page X scroll
+ logerror("video_w: Page %d X Scroll = %04x\n", which, data & 0x01ff);
+ regs[regno] = data & 0x01ff;
+ break;
+
+ case 0x1: // Page Y scroll
+ logerror("video_w: Page %d Y Scroll = %04x\n", which, data & 0x00ff);
+ regs[regno] = data & 0x00ff;
+ break;
+
+ case 0x2: // Page Attributes
+ // 'depth' (aka z value) can't be depth here as it is on spg2xx, or the scores in attract will be behind the table, it really seems to be per attribute bit instead
+
+ logerror("video_w: Page %d Attributes = %04x (Depth:%d, Palette:%d, VSize:%d, HSize:%d, FlipY:%d, FlipX:%d, BPP:%d)\n", which, data
+ , (data >> 12) & 3, (data >> 8) & 15, 8 << ((data >> 6) & 3), 8 << ((data >> 4) & 3), BIT(data, 3), BIT(data, 2), 2 * ((data & 3) + 1));
+ regs[regno] = data;
+ break;
+
+ case 0x3: // Page Control
+ logerror("video_w: Page %d Control = %04x (Blend:%d, HiColor:%d, RowScroll:%d, Enable:%d, Wallpaper:%d, RegSet:%d, Bitmap:%d)\n", which, data
+ , BIT(data, 8), BIT(data, 7), BIT(data, 4), BIT(data, 3), BIT(data, 2), BIT(data, 1), BIT(data, 0));
+ regs[regno] = data;
+ break;
+
+ case 0x4: // Page Tile Address
+ logerror("video_w: Page %d Tile Address = %04x\n", which, data);
+ regs[regno] = data;
+ break;
+
+ case 0x5: // Page Attribute Address
+ logerror("video_w: Page %d Attribute Address = %04x\n", which, data);
+ regs[regno] = data;
+ break;
+ }
+}
+
+
+WRITE16_MEMBER(spg110_device::tmap0_regs_w)
+{
+ tilemap_write_regs(0, tmap0_regs,offset,data);
+}
+
+
+WRITE16_MEMBER(spg110_device::tmap1_regs_w)
+{
+ tilemap_write_regs(1, tmap1_regs,offset,data);
+}
+
+void spg110_device::map(address_map &map)
+{
+ map(0x000000, 0x000fff).ram();
+
+
+ // vregs are at 2000?
+ map(0x002010, 0x002015).rw(FUNC(spg110_device::tmap0_regs_r), FUNC(spg110_device::tmap0_regs_w));
+ map(0x002016, 0x00201b).rw(FUNC(spg110_device::tmap1_regs_r), FUNC(spg110_device::tmap1_regs_w));
+
+ map(0x00201c, 0x00201c).w(FUNC(spg110_device::spg110_201c_w));
+
+ map(0x002020, 0x002020).w(FUNC(spg110_device::spg110_2020_w));
+
+ map(0x002028, 0x002028).rw(FUNC(spg110_device::spg110_2028_r), FUNC(spg110_device::spg110_2028_w));
+ map(0x002029, 0x002029).rw(FUNC(spg110_device::spg110_2029_r), FUNC(spg110_device::spg110_2029_w));
+
+ map(0x002031, 0x002031).w(FUNC(spg110_device::spg110_2031_w)); // sometimes 14a?
+ map(0x002032, 0x002032).w(FUNC(spg110_device::spg110_2032_w)); // always 14a?
+ map(0x002033, 0x002033).w(FUNC(spg110_device::spg110_2033_w));
+ map(0x002034, 0x002034).w(FUNC(spg110_device::spg110_2034_w));
+ map(0x002035, 0x002035).w(FUNC(spg110_device::spg110_2035_w));
+ map(0x002036, 0x002036).w(FUNC(spg110_device::spg110_2036_w)); // possible scroll register?
+ map(0x002037, 0x002037).rw(FUNC(spg110_device::spg110_2037_r), FUNC(spg110_device::spg110_2037_w));
+
+ map(0x002039, 0x002039).w(FUNC(spg110_device::spg110_2039_w));
+
+ map(0x00203c, 0x00203c).w(FUNC(spg110_device::spg110_203c_w));
+
+ map(0x00203d, 0x00203d).w(FUNC(spg110_device::spg110_203d_w)); // possible scroll register?
+
+ map(0x002042, 0x002042).rw(FUNC(spg110_device::spg110_2042_r),FUNC(spg110_device::spg110_2042_w));
+
+ map(0x002045, 0x002045).w(FUNC(spg110_device::spg110_2045_w));
+
+ // seems to be 16 entries for.. something?
+ map(0x002050, 0x002050).w(FUNC(spg110_device::spg110_2050_w));
+ map(0x002051, 0x002051).w(FUNC(spg110_device::spg110_2051_w));
+ map(0x002052, 0x002052).w(FUNC(spg110_device::spg110_2052_w));
+ map(0x002053, 0x002053).w(FUNC(spg110_device::spg110_2053_w));
+ map(0x002054, 0x002054).w(FUNC(spg110_device::spg110_2054_w));
+ map(0x002055, 0x002055).w(FUNC(spg110_device::spg110_2055_w));
+ map(0x002056, 0x002056).w(FUNC(spg110_device::spg110_2056_w));
+ map(0x002057, 0x002057).w(FUNC(spg110_device::spg110_2057_w));
+ map(0x002058, 0x002058).w(FUNC(spg110_device::spg110_2058_w));
+ map(0x002059, 0x002059).w(FUNC(spg110_device::spg110_2059_w));
+ map(0x00205a, 0x00205a).w(FUNC(spg110_device::spg110_205a_w));
+ map(0x00205b, 0x00205b).w(FUNC(spg110_device::spg110_205b_w));
+ map(0x00205c, 0x00205c).w(FUNC(spg110_device::spg110_205c_w));
+ map(0x00205d, 0x00205d).w(FUNC(spg110_device::spg110_205d_w));
+ map(0x00205e, 0x00205e).w(FUNC(spg110_device::spg110_205e_w));
+ map(0x00205f, 0x00205f).w(FUNC(spg110_device::spg110_205f_w));
+
+ //map(0x002010, 0x00205f).ram();
+
+ // everything (dma? and interrupt flag?!)
+ map(0x002060, 0x002060).w(FUNC(spg110_device::dma_dst_w));
+ map(0x002061, 0x002061).w(FUNC(spg110_device::dma_unk_2061_w));
+ map(0x002062, 0x002062).rw(FUNC(spg110_device::dma_len_status_r),FUNC(spg110_device::dma_len_trigger_w));
+ map(0x002063, 0x002063).rw(FUNC(spg110_device::spg110_2063_r),FUNC(spg110_device::spg110_2063_w)); // this looks like interrupt stuff and is checked in the irq like an irq source, but why in the middle of what otherwise look like some kind of DMA?
+ map(0x002064, 0x002064).w(FUNC(spg110_device::dma_dst_step_w));
+ map(0x002066, 0x002066).w(FUNC(spg110_device::dma_src_w));
+ map(0x002067, 0x002067).w(FUNC(spg110_device::dma_unk_2067_w));
+ map(0x002068, 0x002068).w(FUNC(spg110_device::dma_src_step_w));
+
+ map(0x002200, 0x0022ff).ram(); // looks like per-pen brightness or similar? strange because palette isn't memory mapped here
+
+ map(0x003000, 0x00307f).ram(); // sound registers? seems to be 8 long entries, only uses up to 0x7f?
+ map(0x003080, 0x0030ff).ram();
+
+ map(0x003100, 0x003100).w(FUNC(spg110_device::spg110_3100_w));
+ map(0x003101, 0x003101).w(FUNC(spg110_device::spg110_3101_w));
+ map(0x003102, 0x003102).w(FUNC(spg110_device::spg110_3102_w));
+
+ map(0x003104, 0x003104).w(FUNC(spg110_device::spg110_3104_w));
+ map(0x003105, 0x003105).w(FUNC(spg110_device::spg110_3105_w));
+ map(0x003106, 0x003106).w(FUNC(spg110_device::spg110_3106_w));
+ map(0x003107, 0x003107).w(FUNC(spg110_device::spg110_3107_w));
+ map(0x003108, 0x003108).w(FUNC(spg110_device::spg110_3108_w));
+ map(0x003109, 0x003109).w(FUNC(spg110_device::spg110_3109_w));
+
+ map(0x00310b, 0x00310b).w(FUNC(spg110_device::spg110_310b_w));
+ map(0x00310c, 0x00310c).w(FUNC(spg110_device::spg110_310c_w));
+ map(0x00310d, 0x00310d).w(FUNC(spg110_device::spg110_310d_w));
+
+ map(0x00310f, 0x00310f).r(FUNC(spg110_device::spg110_310f_r));
+
+ // 0032xx looks like it could be the same as 003d00 on spg2xx
+ map(0x003200, 0x00322f).rw(m_spg_io, FUNC(spg2xx_io_device::io_r), FUNC(spg2xx_io_device::io_w));
+}
+
+// this seems to be a different, non-cpu mapped space only accessible via the DMA?
+void spg110_device::map_video(address_map &map)
+{
+ // are these addresses hardcoded, or can they move (in which case tilemap system isn't really suitable)
+ map(0x00000, 0x03fff).ram(); // 2fff?
+
+ map(0x04000, 0x04fff).ram(); // seems to be 3 blocks, almost certainly spritelist
+
+// map(0x08000, 0x081ff).ram().w(m_palette, FUNC(palette_device::write16)).share("palette"); // probably? format unknown tho
+ map(0x08000, 0x081ff).ram().share("palram");
+}
+
+
+/*
+TIMER_CALLBACK_MEMBER(spg110_device::test_timer)
+{
+ //
+}
+*/
+
+
+
+void spg110_device::device_start()
+{
+// m_test_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(spg110_device::test_timer), this));
+ save_item(NAME(m_dma_src_step));
+ save_item(NAME(m_dma_dst_step));
+ save_item(NAME(m_dma_unk_2061));
+ save_item(NAME(m_dma_unk_2067));
+ save_item(NAME(m_dma_dst));
+ save_item(NAME(m_dma_src));
+ save_item(NAME(m_bg_scrollx));
+ save_item(NAME(m_bg_scrolly));
+ save_item(NAME(m_2036_scroll));
+
+ m_porta_out.resolve_safe();
+ m_portb_out.resolve_safe();
+ m_portc_out.resolve_safe();
+ m_porta_in.resolve_safe(0);
+ m_portb_in.resolve_safe(0);
+ m_portc_in.resolve_safe(0);
+ m_adc_in[0].resolve_safe(0x0fff);
+ m_adc_in[1].resolve_safe(0x0fff);
+ m_chip_sel.resolve_safe();
+
+}
+
+void spg110_device::device_reset()
+{
+ m_dma_src_step = 0;
+ m_dma_dst_step = 0;
+ m_dma_unk_2061 = 0;
+ m_dma_unk_2067 = 0;
+ m_dma_dst = 0;
+ m_dma_src = 0;
+ m_bg_scrollx = 0;
+ m_bg_scrolly = 0;
+ m_2036_scroll = 0;
+}
+
+double spg110_device::hue2rgb(double p, double q, double t)
+{
+ if (t < 0) t += 1;
+ if (t > 1) t -= 1;
+ if (t < 1 / 6.0f) return p + (q - p) * 6 * t;
+ if (t < 1 / 2.0f) return q;
+ if (t < 2 / 3.0f) return p + (q - p) * (2 / 3.0f - t) * 6;
+ return p;
+}
+
+uint32_t spg110_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+ // Palette, this is still wrong!
+ int offs = 0;
+ for (int index = 0;index < 256; index++)
+ {
+ uint16_t dat = m_palram[offs++];
+
+ // llll lsss sshh hhhh
+ int l_raw = (dat & 0xf800) >> 11;
+ int sl_raw = (dat & 0x07c0) >> 6;
+ int h_raw = (dat & 0x003f) >> 0;
+
+ double l = (double)l_raw / 31.0f;
+ double s = (double)sl_raw / 31.0f;
+ double h = (double)h_raw / 47.0f;
+
+ double r, g, b;
+
+ if (s == 0) {
+ r = g = b = l; // greyscale
+ } else {
+ double q = l < 0.5f ? l * (1 + s) : l + s - l * s;
+ double p = 2 * l - q;
+ r = hue2rgb(p, q, h + 1/3.0f);
+ g = hue2rgb(p, q, h);
+ b = hue2rgb(p, q, h - 1/3.0f);
+ }
+
+ int r_real = r * 255.0f;
+ int g_real = g * 255.0f;
+ int b_real = b * 255.0f;
+
+ m_palette->set_pen_color(index, r_real, g_real, b_real);
+ }
+
+ memset(&m_screenbuf[320 * cliprect.min_y], 0, 4 * 320 * ((cliprect.max_y - cliprect.min_y) + 1));
+
+ const uint32_t page1_addr = 0;//0x40 * m_video_regs[0x20];
+ const uint32_t page2_addr = 0;//0x40 * m_video_regs[0x21];
+ uint16_t *page1_regs = tmap0_regs;
+ uint16_t *page2_regs = tmap1_regs;
+
+ for (uint32_t scanline = (uint32_t)cliprect.min_y; scanline <= (uint32_t)cliprect.max_y; scanline++)
+ {
+ for (int i = 0; i < 4; i++)
+ {
+ blit_page(cliprect, scanline, i, page2_addr, page2_regs);
+ blit_page(cliprect, scanline, i, page1_addr, page1_regs);
+ //blit_sprites(cliprect, scanline, i);
+ }
+ }
+
+ for (int y = cliprect.min_y; y <= cliprect.max_y; y++)
+ {
+ uint32_t *dest = &bitmap.pix32(y, cliprect.min_x);
+ uint32_t *src = &m_screenbuf[cliprect.min_x + 320 * y];
+ memcpy(dest, src, sizeof(uint32_t) * ((cliprect.max_x - cliprect.min_x) + 1));
+ }
+
+ return 0;
+}
+
+WRITE_LINE_MEMBER(spg110_device::vblank)
+{
+ if (!state)
+ {
+ m_cpu->set_state_unsynced(UNSP_IRQ0_LINE, ASSERT_LINE);
+ // m_test_timer->adjust(attotime::from_usec(100), 0);
+ }
+
+ return;
+}