// license:BSD-3-Clause // copyright-holders:Ryan Holtz #include "emu.h" #include "ex1280.h" DEFINE_DEVICE_TYPE(ISA16_EX1280, isa16_ex1280_device, "ex1280", "Vectrix EX1280") //------------------------------------------------- // isa16_ex1280_device - constructor //------------------------------------------------- isa16_ex1280_device::isa16_ex1280_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, ISA16_EX1280, tag, owner, clock) , device_isa16_card_interface(mconfig, *this) , m_cpu(*this, "maincpu") , m_ramdac(*this, "ramdac") , m_screen(*this, "screen") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void isa16_ex1280_device::device_start() { set_isa_device(); save_item(NAME(m_flags)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void isa16_ex1280_device::device_reset() { m_vram.clear(); m_vram.resize(0xa00000); m_flags = 0x0002; } //------------------------------------------------- // main_map - memory map for the card's TMS34010 //------------------------------------------------- void isa16_ex1280_device::main_map(address_map &map) { map(0x00000000, 0x009fffff).rw(FUNC(isa16_ex1280_device::vram_r), FUNC(isa16_ex1280_device::vram_w)); map(0x04000000, 0x04000fff).rw(FUNC(isa16_ex1280_device::regs_r), FUNC(isa16_ex1280_device::regs_w)); map(0xfff00000, 0xfffbffff).ram(); map(0xfffc0000, 0xffffffff).rom().region("ex1280", 0); } //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void isa16_ex1280_device::device_add_mconfig(machine_config &config) { TMS34010(config, m_cpu, 64000000); m_cpu->set_addrmap(AS_PROGRAM, &isa16_ex1280_device::main_map); m_cpu->set_halt_on_reset(false); m_cpu->set_pixel_clock(64000000); m_cpu->set_pixels_per_clock(1); m_cpu->set_scanline_rgb32_callback(FUNC(isa16_ex1280_device::scanline_update)); m_cpu->set_shiftreg_in_callback(FUNC(isa16_ex1280_device::to_shiftreg)); /* write to shiftreg function */ m_cpu->set_shiftreg_out_callback(FUNC(isa16_ex1280_device::from_shiftreg)); /* read from shiftreg function */ m_cpu->set_screen(m_screen); SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_refresh_hz(60); m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // Not accurate m_screen->set_size(640, 480); m_screen->set_visarea(0, 640-1, 0, 480-1); m_screen->set_screen_update(m_cpu, FUNC(tms34010_device::tms340x0_rgb32)); m_screen->screen_vblank().set(FUNC(isa16_ex1280_device::vblank_w)); BT451(config, m_ramdac, 0); } //------------------------------------------------- // regs_r - register read handler //------------------------------------------------- uint16_t isa16_ex1280_device::regs_r(offs_t offset, uint16_t mem_mask) { uint16_t data = 0; if (offset == 0) { data = m_flags; } else if (offset == 4) { data = 0x0000; } logerror("%s: regs_r: %08x: %04x & %04x\n", machine().describe_context(), 0x04000000 | (offset << 1), data, mem_mask); return data; } //------------------------------------------------- // regs_w - register write handler //------------------------------------------------- void isa16_ex1280_device::regs_w(offs_t offset, uint16_t data, uint16_t mem_mask) { logerror("%s: regs_w: %08x = %04x & %04x\n", machine().describe_context(), 0x04000000 | (offset << 1), data, mem_mask); } //------------------------------------------------- // vram_r - VRAM direct read handler //------------------------------------------------- uint16_t isa16_ex1280_device::vram_r(offs_t offset) { logerror("vram_r: %08x = %04x\n", offset, m_vram[offset]); return m_vram[offset]; } //------------------------------------------------- // vram_w - VRAM direct write handler //------------------------------------------------- void isa16_ex1280_device::vram_w(offs_t offset, uint16_t data, uint16_t mem_mask) { logerror("vram_r: %08x = %04x & %04x\n", offset, data, mem_mask); COMBINE_DATA(&m_vram[offset]); } //------------------------------------------------- // scanline_update - //------------------------------------------------- TMS340X0_SCANLINE_RGB32_CB_MEMBER(isa16_ex1280_device::scanline_update) { uint16_t *src = &m_vram[params->rowaddr << 8]; uint32_t *dest = &bitmap.pix32(scanline); const pen_t *pens = m_ramdac->pens(); int coladdr = params->coladdr << 1; /* copy the non-blanked portions of this scanline */ for (int x = params->heblnk; x < params->hsblnk; x += 4) { uint16_t pixels = src[coladdr++]; dest[x + 0] = pens[pixels & 0x0f]; dest[x + 1] = pens[(pixels >> 4) & 0x0f]; dest[x + 2] = pens[(pixels >> 8) & 0x0f]; dest[x + 3] = pens[(pixels >> 12) & 0x0f]; } } //------------------------------------------------- // to_shiftreg - handle VRAM->TMS shift register //------------------------------------------------- TMS340X0_TO_SHIFTREG_CB_MEMBER(isa16_ex1280_device::to_shiftreg) { printf("address to shiftreg: %08x\n", address); if (address < 0xa00000) { memcpy(shiftreg, &m_vram[address >> 4], 0x400); } } //--------------------------------------------------- // from_shiftreg - handle TMS shift register->VRAM //--------------------------------------------------- TMS340X0_FROM_SHIFTREG_CB_MEMBER(isa16_ex1280_device::from_shiftreg) { printf("address from shiftreg: %08x\n", address); if (address < 0xa00000) { memcpy(&m_vram[address >> 4], shiftreg, 0x400); } } //------------------------------------------------- // vblank_w - toggle vblank bit(?) //------------------------------------------------- WRITE_LINE_MEMBER(isa16_ex1280_device::vblank_w) { //m_flags &= ~(1 << 1); //m_flags |= (state << 1); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- ROM_START( ex1280 ) ROM_REGION16_LE(0x8000, "ex1280", 0) ROM_LOAD16_BYTE("hbv10lo.bin", 0x0000, 0x4000, CRC(4de578b8) SHA1(cd7bc7859dd44f978adca7506afb0a1a73cb1121) ) ROM_LOAD16_BYTE("hbv10hi.bin", 0x0001, 0x4000, CRC(b87caa0c) SHA1(88c19cf36cb98e59810dad2a2f1f0e6c884cd7eb) ) ROM_END const tiny_rom_entry *isa16_ex1280_device::device_rom_region() const { return ROM_NAME( ex1280 ); }