diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua index 7a0a7f9f389..ba933d84b68 100644 --- a/scripts/target/mame/mess.lua +++ b/scripts/target/mame/mess.lua @@ -4504,6 +4504,7 @@ files { MAME_DIR .. "src/mame/drivers/ibm3153.cpp", MAME_DIR .. "src/mame/drivers/icatel.cpp", MAME_DIR .. "src/mame/drivers/icebox.cpp", + MAME_DIR .. "src/mame/drivers/iez80.cpp", MAME_DIR .. "src/mame/drivers/if800.cpp", MAME_DIR .. "src/mame/drivers/ikt5a.cpp", MAME_DIR .. "src/mame/drivers/imsai.cpp", diff --git a/src/mame/drivers/iez80.cpp b/src/mame/drivers/iez80.cpp new file mode 100644 index 00000000000..b325953f9e4 --- /dev/null +++ b/src/mame/drivers/iez80.cpp @@ -0,0 +1,232 @@ +// license: BSD-3-Clause +// copyright-holders: Dirk Best +/*************************************************************************** + + Insight Enterprises Z80 Single Board Computer + + Possibly a prototype or part of a larger system. A video with more + info is available at https://www.youtube.com/watch?v=_z1kBb-Zwpg. + + TODO: + - Verify device hookup + - Figure out what's at 0x20, 0x21, 0x3c, 0x3d + - Hook up FDC + - Hook up CRT8002 (video attributes) + - Much more + +***************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "machine/upd765.h" +#include "machine/z80ctc.h" +#include "machine/z80dma.h" +#include "machine/z80pio.h" +#include "machine/z80sio.h" +#include "video/tms9927.h" +#include "emupal.h" +#include "screen.h" + + +namespace { + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class iez80_state : public driver_device +{ +public: + iez80_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_crtc(*this, "crtc"), + m_palette(*this, "palette"), + m_chargen(*this, "chargen"), + m_vram(*this, "vram") + { } + + void iez80(machine_config &config); + +protected: + virtual void machine_start() override; + virtual void machine_reset() override; + +private: + required_device m_maincpu; + required_device m_crtc; + required_device m_palette; + required_region_ptr m_chargen; + required_shared_ptr m_vram; + + void mem_map(address_map &map); + void io_map(address_map &map); + + uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); +}; + + +//************************************************************************** +// ADDRESS MAPS +//************************************************************************** + +void iez80_state::mem_map(address_map &map) +{ + map(0x0000, 0x0fff).rom().region("maincpu", 0); + map(0x2000, 0x2fff).ram().share("vram"); + map(0xe000, 0xffff).ram(); +} + +void iez80_state::io_map(address_map &map) +{ + map.global_mask(0xff); +// map(0x20, 0x20).lr8([this]() { return machine().rand(); }, "unk20"); +// map(0x21, 0x21).lr8([this]() { return machine().rand(); }, "unk21"); + map(0x24, 0x27).rw("pio", FUNC(z80pio_device::read), FUNC(z80pio_device::write)); + map(0x28, 0x2b).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); + map(0x2c, 0x2f).rw("dart1", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); + map(0x32, 0x32).rw("dma", FUNC(z80dma_device::read), FUNC(z80dma_device::write)); + map(0x38, 0x3b).rw("dart2", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); +// map(0x3c, 0x3c).lr8([this]() { return machine().rand(); }, "unk3c"); +// map(0x3d, 0x3d).lr8([this]() { return machine().rand(); }, "unk3d"); + map(0x40, 0x4f).rw("crtc", FUNC(crt5037_device::read), FUNC(crt5037_device::write)); +} + + +//************************************************************************** +// INPUT DEFINITIONS +//************************************************************************** + +static INPUT_PORTS_START( iez80 ) +INPUT_PORTS_END + + +//************************************************************************** +// VIDEO EMULATION +//************************************************************************** + +uint32_t iez80_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + rgb_t const *const pen = m_palette->palette()->entry_list_raw(); + + rectangle cursor; + m_crtc->cursor_bounds(cursor); + + for (int y = 0; y < 24; y++) + { + for (int ra = 0; ra < 12; ra++) + { + for (int x = 0; x < 80; x++) + { + uint8_t chr = m_vram[(y * 160) + (x * 2) + 0]; + // uint8_t attr = m_vram[(y * 160) + (x * 2) + 1]; + uint8_t data = m_chargen[((chr << 4) | ra) & 0x7ff]; + + if (cursor.contains(x * 8, y * 12)) + data ^= 0xff; + + // draw 8 pixels of the char + for (int i = 0; i < 8; i++) + bitmap.pix(y * 12 + ra, x * 8 + i) = pen[BIT(data, 7 - i)]; + } + } + } + + return 0; +} + +static const gfx_layout crt8002_charlayout = +{ + 8, 12, + RGN_FRAC(1,1), + 1, + { 0 }, + { STEP8(0,1) }, + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 }, + 8*16 +}; + +static GFXDECODE_START( gfx_crt8002 ) + GFXDECODE_ENTRY("chargen", 0, crt8002_charlayout, 0, 1) +GFXDECODE_END + + +//************************************************************************** +// MACHINE EMULATION +//************************************************************************** + +void iez80_state::machine_start() +{ +} + +void iez80_state::machine_reset() +{ +} + + +//************************************************************************** +// MACHINE DEFINTIONS +//************************************************************************** + +static const z80_daisy_config daisy_chain[] = +{ + { "ctc" }, + { nullptr } +}; + +void iez80_state::iez80(machine_config &config) +{ + Z80(config, m_maincpu, 2'500'000); // unknown clock + m_maincpu->set_addrmap(AS_PROGRAM, &iez80_state::mem_map); + m_maincpu->set_addrmap(AS_IO, &iez80_state::io_map); + m_maincpu->set_daisy_config(daisy_chain); + + Z80DMA(config, "dma", 4'000'000); // unknown clock + + z80ctc_device& ctc(Z80CTC(config, "ctc", 4'000'000)); // unknown clock + ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); + + Z80PIO(config, "pio", 4'000'000); // unknown clock + + Z80DART(config, "dart1", 4'000'000); // unknown clock (5.0688_MHz_XTAL near) + + Z80DART(config, "dart2", 4'000'000); // unknown clock (5.0688_MHz_XTAL near) + + // video hardware + screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); + screen.set_raw(17'550'000, 816, 0, 640, 358, 0, 288); // unknown clock, hand-tuned to ~60fps + screen.set_screen_update(FUNC(iez80_state::screen_update)); + + GFXDECODE(config, "gfxdecode", "palette", gfx_crt8002); + + PALETTE(config, m_palette, palette_device::MONOCHROME); + + CRT5037(config, m_crtc, 17'550'000 / 8); // unknown clock + m_crtc->set_char_width(8); + m_crtc->set_screen("screen"); +} + + +//************************************************************************** +// ROM DEFINITIONS +//************************************************************************** + +ROM_START( iez80 ) + ROM_REGION(0x1000, "maincpu", 0) + ROM_LOAD("iez80.bin", 0x0000, 0x1000, CRC(d73137d2) SHA1(a340a47c5f37bbef244d35d581ff0beeeec5d677)) + + ROM_REGION(0x800, "chargen", 0) + ROM_LOAD("8002.bin", 0x0000, 0x0800, CRC(fdd6eb13) SHA1(a094d416e66bdab916e72238112a6265a75ca690)) +ROM_END + + +} // anonymous namespace + + +//************************************************************************** +// SYSTEM DRIVERS +//************************************************************************** + +// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS +COMP( 1983, iez80, 0, 0, iez80, iez80, iez80_state, empty_init, "Insight Enterprises", "Z80 SBC (Prototype?)", MACHINE_IS_SKELETON ) diff --git a/src/mame/mame.lst b/src/mame/mame.lst index 70bad800e1d..1e83156282f 100644 --- a/src/mame/mame.lst +++ b/src/mame/mame.lst @@ -16731,6 +16731,9 @@ v1 // @source:ie15.cpp ie15 // +@source:iez80.cpp +iez80 // + @source:if800.cpp if800 // diff --git a/src/mame/mess.flt b/src/mame/mess.flt index 20ce43ddbc9..513ba47ee13 100644 --- a/src/mame/mess.flt +++ b/src/mame/mess.flt @@ -429,6 +429,7 @@ ibmpcjr.cpp icatel.cpp icebox.cpp ie15.cpp +iez80.cpp if800.cpp ikt5a.cpp imds2.cpp