diff options
Diffstat (limited to 'src/mame/drivers/m79152pc.c')
-rw-r--r-- | src/mame/drivers/m79152pc.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/mame/drivers/m79152pc.c b/src/mame/drivers/m79152pc.c new file mode 100644 index 00000000000..cf8bf82d908 --- /dev/null +++ b/src/mame/drivers/m79152pc.c @@ -0,0 +1,145 @@ +// license:BSD-3-Clause +// copyright-holders:Miodrag Milanovic +/*************************************************************************** + + Mera-Elzab 79152pc + + This is terminal + + 29/12/2011 Skeleton driver. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" + +class m79152pc_state : public driver_device +{ +public: + m79152pc_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_p_videoram(*this, "p_videoram"), + m_p_attributes(*this, "p_attributes"), + m_maincpu(*this, "maincpu") { } + + UINT8 *m_p_chargen; + required_shared_ptr<UINT8> m_p_videoram; + required_shared_ptr<UINT8> m_p_attributes; + virtual void machine_reset(); + virtual void video_start(); + UINT32 screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + required_device<cpu_device> m_maincpu; +}; + +static ADDRESS_MAP_START(m79152pc_mem, AS_PROGRAM, 8, m79152pc_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x3fff) AM_ROM + AM_RANGE(0x4000, 0x47ff) AM_RAM + AM_RANGE(0x8000, 0x8fff) AM_RAM AM_SHARE("p_videoram") + AM_RANGE(0x9000, 0x9fff) AM_RAM AM_SHARE("p_attributes") +ADDRESS_MAP_END + +static ADDRESS_MAP_START( m79152pc_io, AS_IO, 8, m79152pc_state) + //ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( m79152pc ) +INPUT_PORTS_END + + +void m79152pc_state::machine_reset() +{ +} + +void m79152pc_state::video_start() +{ + m_p_chargen = memregion("chargen")->base()+4; +} + +UINT32 m79152pc_state::screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +{ +// Attributes are unknown so are not implemented + UINT8 y,ra,chr,gfx; //,attr; + UINT16 sy=0,ma=0,x; + + for (y = 0; y < 25; y++) + { + for (ra = 0; ra < 12; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + + for (x = ma; x < ma + 80; x++) + { + chr = m_p_videoram[x]; + //attr = m_p_attributes[x]; + gfx = m_p_chargen[(chr<<4) | ra ]; + + /* Display a scanline of a character */ + *p++ = BIT(gfx, 7); + *p++ = BIT(gfx, 6); + *p++ = BIT(gfx, 5); + *p++ = BIT(gfx, 4); + *p++ = BIT(gfx, 3); + *p++ = BIT(gfx, 2); + *p++ = BIT(gfx, 1); + *p++ = BIT(gfx, 0); + } + } + ma+=80; + } + return 0; +} + +/* F4 Character Displayer */ +static const gfx_layout m79152pc_charlayout = +{ + 8, 12, /* 8 x 16 characters */ + 256, /* 256 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + /* x offsets */ + { 0, 1, 2, 3, 4, 5, 6, 7 }, + /* y offsets */ + { 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, + 8*16 /* every char takes 16 bytes */ +}; + +static GFXDECODE_START( m79152pc ) + GFXDECODE_ENTRY( "chargen", 0x0000, m79152pc_charlayout, 0, 1 ) +GFXDECODE_END + +static MACHINE_CONFIG_START( m79152pc, m79152pc_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) + MCFG_CPU_PROGRAM_MAP(m79152pc_mem) + MCFG_CPU_IO_MAP(m79152pc_io) + + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_SIZE(640, 300) + MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 300-1) + MCFG_SCREEN_UPDATE_DRIVER(m79152pc_state, screen_update_m79152pc) + MCFG_SCREEN_PALETTE("palette") + MCFG_GFXDECODE_ADD("gfxdecode", "palette", m79152pc) + MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( m79152pc ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "left.bin", 0x0000, 0x4000, CRC(8cd677fc) SHA1(7ad28f3ba984383f24a36639ca27fc1eb5a5d002)) + + ROM_REGION( 0x1800, "chargen", ROMREGION_INVERT ) + ROM_LOAD( "right.bin", 0x0000, 0x1000, CRC(93f83fdc) SHA1(e8121b3d175c46c02828f43ec071a7d9c62e7c26)) // chargen + ROM_LOAD( "char.bin", 0x1000, 0x0800, CRC(da3792a5) SHA1(b4a4f0d61d8082b7909a346a5b01494c53cf8d05)) // unknown +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( ????, m79152pc, 0, 0, m79152pc, m79152pc, driver_device, 0, "Mera-Elzab", "MERA 79152 PC", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |