diff options
Diffstat (limited to 'src/mame/drivers/m3.cpp')
-rw-r--r-- | src/mame/drivers/m3.cpp | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/src/mame/drivers/m3.cpp b/src/mame/drivers/m3.cpp deleted file mode 100644 index e97675a6e50..00000000000 --- a/src/mame/drivers/m3.cpp +++ /dev/null @@ -1,154 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders: -/*********************************************************************************************************************************** - -2017-11-20 Skeleton - -LSI M3 - -From disassembly: chips: Z80, 6845, 8251, 2x 8255, Z80CTC - - -************************************************************************************************************************************/ - -#include "emu.h" -#include "cpu/z80/z80.h" -#include "video/mc6845.h" -#include "emupal.h" -#include "screen.h" - -class m3_state : public driver_device -{ -public: - m3_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, "maincpu") - , m_p_chargen(*this, "chargen") - , m_p_videoram(*this, "videoram") - , m_palette(*this, "palette") - { } - - void m3(machine_config &config); - -private: - MC6845_UPDATE_ROW(crtc_update_row); - - void io_map(address_map &map); - void mem_map(address_map &map); - - virtual void machine_reset() override; - required_device<cpu_device> m_maincpu; - required_region_ptr<u8> m_p_chargen; - required_shared_ptr<u8> m_p_videoram; - required_device<palette_device> m_palette; -}; - -void m3_state::mem_map(address_map &map) -{ - map(0x0000, 0xe7ff).ram(); - map(0xe800, 0xefff).ram().share("videoram"); - map(0xf000, 0xffff).rom().region("roms", 0); -} - -void m3_state::io_map(address_map &map) -{ - map.global_mask(0xff); - map(0x84, 0x84).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w)); - map(0x85, 0x85).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); -} - -static INPUT_PORTS_START( m3 ) -INPUT_PORTS_END - -MC6845_UPDATE_ROW( m3_state::crtc_update_row ) -{ - const rgb_t *pens = m_palette->palette()->entry_list_raw(); - uint8_t chr,gfx,inv; - uint16_t mem,x; - uint32_t *p = &bitmap.pix32(y); - - for (x = 0; x < x_count; x++) - { - inv = (x == cursor_x) ? 0xff : 0; - mem = (ma + x) & 0x7ff; - chr = m_p_videoram[mem]; - if (BIT(chr, 7)) - { - inv ^= 0xff; - chr &= 0x7f; - } - - /* get pattern of pixels for that character scanline */ - gfx = m_p_chargen[(chr<<4) | ra] ^ inv; - - /* Display a scanline of a character (8 pixels) */ - *p++ = pens[BIT(gfx, 6)]; - *p++ = pens[BIT(gfx, 5)]; - *p++ = pens[BIT(gfx, 4)]; - *p++ = pens[BIT(gfx, 3)]; - *p++ = pens[BIT(gfx, 2)]; - *p++ = pens[BIT(gfx, 1)]; - *p++ = pens[BIT(gfx, 0)]; - } -} - -/* F4 Character Displayer */ -static const gfx_layout charlayout = -{ - 7, 16, /* 7 x 16 characters */ - 128, /* 128 characters */ - 1, /* 1 bits per pixel */ - { 0 }, /* no bitplanes */ - /* x offsets */ - { 1, 2, 3, 4, 5, 6, 7 }, - /* y offsets */ - { 0, 8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 }, - 8*16 /* every char takes 16 bytes */ -}; - -static GFXDECODE_START( gfx_f4disp ) - GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 ) -GFXDECODE_END - -void m3_state::machine_reset() -{ - m_maincpu->set_pc(0xf000); -} - -void m3_state::m3(machine_config &config) -{ - Z80(config, m_maincpu, 2'000'000); // no idea of clock. - m_maincpu->set_addrmap(AS_PROGRAM, &m3_state::mem_map); - m_maincpu->set_addrmap(AS_IO, &m3_state::io_map); - - /* video hardware */ - screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER, rgb_t::green())); - screen.set_refresh_hz(60); - screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not correct - screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update)); - screen.set_size(640, 480); - screen.set_visarea(0, 639, 0, 479); - GFXDECODE(config, "gfxdecode", m_palette, gfx_f4disp); - PALETTE(config, m_palette, palette_device::MONOCHROME); - - /* Devices */ - mc6845_device &crtc(MC6845(config, "crtc", 2'000'000)); // clk unknown - crtc.set_screen("screen"); - crtc.set_show_border_area(false); - crtc.set_char_width(7); - crtc.set_update_row_callback(FUNC(m3_state::crtc_update_row)); -} - -ROM_START( m3 ) - ROM_REGION( 0x3000, "roms", 0 ) - ROM_LOAD( "bootstrap_prom,034.bin", 0x0000, 0x0800, CRC(7fdb051e) SHA1(7aa24d4f44b6a0c8f7f647667f4997432c186cac) ) - ROM_LOAD( "monitor_prom_v1.7_2015-12-09.bin", 0x0800, 0x0800, CRC(85b5c541) SHA1(92b4ec87a4d0d8c0f7b49eec0c5457f237de0a01) ) - - ROM_REGION( 0x0800, "chargen", 0 ) // bit 7 set on every byte - bad? - ROM_LOAD( "6845crt_font_prom,033.bin", 0x0000, 0x0800, CRC(cc29f664) SHA1(4197530d9455d665fd4773f95bb6394f6b056dec) ) - - ROM_REGION( 0x0800, "keyboard", 0 ) - ROM_LOAD( "keyboard_prom,032.bin", 0x0000, 0x0800, CRC(21548355) SHA1(ee4ce4af9c78474263dd58e0f19e79e5b00926fa) ) -ROM_END - -COMP( 19??, m3, 0, 0, m3, m3, m3_state, empty_init, "LSI", "M3", MACHINE_IS_SKELETON ) |