diff options
Diffstat (limited to 'src/mame/drivers/jonos.c')
-rw-r--r-- | src/mame/drivers/jonos.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/mame/drivers/jonos.c b/src/mame/drivers/jonos.c new file mode 100644 index 00000000000..4f4a0ad2593 --- /dev/null +++ b/src/mame/drivers/jonos.c @@ -0,0 +1,158 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/*************************************************************************** + + Jonos Escort + + 2013-09-12 Skeleton driver + + This computer is some sort of portable Z80-based system. + + Haven't found any info. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" + + +class jonos_state : public driver_device +{ +public: + jonos_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_p_videoram(*this, "videoram") + , m_maincpu(*this, "maincpu") + { } + + DECLARE_DRIVER_INIT(jonos); + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + required_shared_ptr<UINT8> m_p_videoram; +private: + const UINT8 *m_p_chargen; + virtual void machine_reset(); + virtual void video_start(); + required_device<cpu_device> m_maincpu; +}; + + + +static ADDRESS_MAP_START(jonos_mem, AS_PROGRAM, 8, jonos_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x0fff) AM_ROM AM_REGION("roms", 0) + AM_RANGE(0x1000, 0x17ff) AM_RAM + AM_RANGE(0x1800, 0x1fff) AM_RAM AM_SHARE("videoram") + AM_RANGE(0x2000, 0xffff) AM_RAM +ADDRESS_MAP_END + +static ADDRESS_MAP_START( jonos_io, AS_IO, 8, jonos_state) + ADDRESS_MAP_GLOBAL_MASK(0xff) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( jonos ) +INPUT_PORTS_END + +void jonos_state::machine_reset() +{ +} + +void jonos_state::video_start() +{ + m_p_chargen = memregion("chargen")->base(); +} + +UINT32 jonos_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +{ + UINT8 y,ra,chr,gfx; + 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]; + + if (ra < 8) + gfx = m_p_chargen[(chr<<3) | ra ]; + else + gfx = m_p_chargen[(chr<<3) | (ra&7) | 0x400]; + + /* Display a scanline of a character */ + *p++ = BIT(gfx, 0); + *p++ = BIT(gfx, 1); + *p++ = BIT(gfx, 2); + *p++ = BIT(gfx, 3); + *p++ = BIT(gfx, 4); + *p++ = BIT(gfx, 5); + *p++ = BIT(gfx, 6); + *p++ = BIT(gfx, 7); + } + } + ma+=80; + } + return 0; +} + +/* F4 Character Displayer */ +static const gfx_layout jonos_charlayout = +{ + 8, 12, /* 8 x 12 characters */ + 128, /* 128 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + /* x offsets */ + { 7, 6, 5, 4, 3, 2, 1, 0 }, + /* y offsets */ + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 1024*8, 1025*8, 1026*8, 1027*8 }, + 8*8 /* every char takes 8 bytes */ +}; + +static GFXDECODE_START( jonos ) + GFXDECODE_ENTRY( "chargen", 0x0000, jonos_charlayout, 0, 1 ) +GFXDECODE_END + + +static MACHINE_CONFIG_START( jonos, jonos_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4) + MCFG_CPU_PROGRAM_MAP(jonos_mem) + MCFG_CPU_IO_MAP(jonos_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(60) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_UPDATE_DRIVER(jonos_state, screen_update) + MCFG_SCREEN_SIZE(640, 300) + MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 299) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", jonos) + MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") +MACHINE_CONFIG_END + +DRIVER_INIT_MEMBER(jonos_state,jonos) +{ +} + +/* ROM definition */ +ROM_START( jonos ) + ROM_REGION( 0x1000, "roms", 0 ) + ROM_LOAD( "jocrts04.rom", 0x0000, 0x1000, CRC(6a3d4048) SHA1(bdb0bc2c8c4e54261376e4ea3c2827d00d3d89bc) ) + + ROM_REGION( 0x0800, "user1", 0 ) // Z80 code for serial & parallel ports + ROM_LOAD( "joz80.rom", 0x0000, 0x0800, CRC(de1e8998) SHA1(270df08caf30cc8f18e740ef05dc8727a925a5da) ) + + ROM_REGION( 0x0800, "chargen", 0 ) + ROM_LOAD( "jochset0.rom", 0x0000, 0x0800, CRC(1d8e9640) SHA1(74f3604acc71f9bc1e1f9479f6438feda79293a2) ) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( 198?, jonos, 0, 0, jonos, jonos, jonos_state, jonos, "Jonos", "Escort", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |