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Diffstat (limited to 'src/devices/machine/spg110.cpp')
-rw-r--r-- | src/devices/machine/spg110.cpp | 669 |
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; +} |