diff options
Diffstat (limited to 'src/mame/drivers/tim100.c')
-rw-r--r-- | src/mame/drivers/tim100.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/mame/drivers/tim100.c b/src/mame/drivers/tim100.c new file mode 100644 index 00000000000..212a2e60f39 --- /dev/null +++ b/src/mame/drivers/tim100.c @@ -0,0 +1,168 @@ +// license:BSD-3-Clause +// copyright-holders:Miodrag Milanovic +/*************************************************************************** + + TIM-100 Terminal + Mihajlo Pupin Institute + + 21/12/2012 Skeleton driver. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/i8085/i8085.h" +#include "machine/i8251.h" +#include "video/i8275.h" + +class tim100_state : public driver_device +{ +public: + tim100_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_palette(*this, "palette") + { } + + required_device<cpu_device> m_maincpu; + required_device<palette_device> m_palette; + virtual void machine_start(); + virtual void machine_reset(); + I8275_DRAW_CHARACTER_MEMBER( crtc_display_pixels ); + +private: + UINT8 *m_charmap; +}; + +static ADDRESS_MAP_START(tim100_mem, AS_PROGRAM, 8, tim100_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x1fff) AM_ROM // 2764 at U16 + AM_RANGE(0x2000, 0x27ff) AM_RAM // 2KB static ram CDM6116A at U15 + + AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("i8276", i8275_device, read, write) + + AM_RANGE(0x6000, 0x6000) AM_DEVREADWRITE("uart_u17", i8251_device, status_r, control_w) + AM_RANGE(0x6001, 0x6001) AM_DEVREADWRITE("uart_u17", i8251_device, data_r, data_w) + + AM_RANGE(0x8000, 0x8000) AM_DEVREADWRITE("uart_u18", i8251_device, status_r, control_w) + AM_RANGE(0x8001, 0x8001) AM_DEVREADWRITE("uart_u18", i8251_device, data_r, data_w) +ADDRESS_MAP_END + +static ADDRESS_MAP_START(tim100_io, AS_IO, 8, tim100_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) +ADDRESS_MAP_END + + +/* Input ports */ +static INPUT_PORTS_START( tim100 ) +INPUT_PORTS_END + +static const rgb_t tim100_palette[3] = { + rgb_t(0x00, 0x00, 0x00), // black + rgb_t(0xa0, 0xa0, 0xa0), // white + rgb_t(0xff, 0xff, 0xff) // highlight +}; + +void tim100_state::machine_start() +{ + m_charmap = memregion("chargen")->base(); +} + +void tim100_state::machine_reset() +{ + m_palette->set_pen_colors(0, tim100_palette, ARRAY_LENGTH(tim100_palette)); +} + +const gfx_layout tim100_charlayout = +{ + 12, 16, /* 8x16 characters */ + 256, /* 128 characters */ + 1, /* 1 bits per pixel */ + {0}, /* no bitplanes; 1 bit per pixel */ + {0,1,2,3,4,5,0x8000,0x8001,0x8002,0x8003,0x8004,0x8005}, + {0 * 8, 1 * 8, 2 * 8, 3 * 8, 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 /* space between characters */ +}; + +static GFXDECODE_START( tim100 ) + GFXDECODE_ENTRY( "chargen", 0x0000, tim100_charlayout, 0, 1 ) +GFXDECODE_END + + +// this gets called via a (i8275_dack_w), so does nothing currently +// once fixed, pixel count needs adjusting +I8275_DRAW_CHARACTER_MEMBER( tim100_state::crtc_display_pixels ) +{ + int i; + const rgb_t *palette = m_palette->palette()->entry_list_raw(); + UINT8 pixels = m_charmap[(linecount & 15) + (charcode << 4)]; + if (vsp) + { + pixels = 0; + } + + if (lten) + { + pixels = 0xff; + } + + if (rvv) + { + pixels ^= 0xff; + } + + for(i=0;i<8;i++) // 6 pixels + { + bitmap.pix32(y, x + i) = palette[(pixels >> (7-i)) & 1 ? (hlgt ? 2 : 1) : 0]; + } +} + +static MACHINE_CONFIG_START( tim100, tim100_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",I8085A, XTAL_4_9152MHz) // divider unknown + MCFG_CPU_PROGRAM_MAP(tim100_mem) + MCFG_CPU_IO_MAP(tim100_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_UPDATE_DEVICE("i8276", i8275_device, screen_update) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_SIZE(40*16, 16*16) + MCFG_SCREEN_VISIBLE_AREA(0, 40*16-1, 0, 16*16-1) + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", tim100 ) + + MCFG_DEVICE_ADD("i8276", I8275, XTAL_4_9152MHz) + MCFG_I8275_CHARACTER_WIDTH(16) + MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(tim100_state, crtc_display_pixels) + MCFG_I8275_IRQ_CALLBACK(INPUTLINE("maincpu", I8085_RST65_LINE)) + + MCFG_PALETTE_ADD("palette", 3) + + MCFG_DEVICE_ADD("uart_u17", I8251, 0) + MCFG_DEVICE_ADD("uart_u18", I8251, 0) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( tim100 ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "tim 100 v.3.2.0.u16", 0x0000, 0x2000, CRC(4de9c8ad) SHA1(b0914d6e8d618e92a87b4b39c35391541251e8cc)) + + // The first and 2nd halves of these roms are identical, confirmed ok + ROM_REGION( 0x2000, "chargen", ROMREGION_INVERT ) + ROM_SYSTEM_BIOS( 0, "212", "v 2.1.2" ) + ROMX_LOAD( "tim 100kg v.2.1.2.u12", 0x0000, 0x0800, CRC(faf5743c) SHA1(310b662e9535878210f8aaab3e2b846fade60642),ROM_BIOS(1)) + ROM_CONTINUE (0x1000, 0x0800) + ROM_CONTINUE (0x0800, 0x0800) + ROM_CONTINUE (0x1800, 0x0800) + ROM_SYSTEM_BIOS( 1, "220", "v 2.2.0" ) + ROMX_LOAD( "tim 100kg v.2.2.0.u12", 0x0000, 0x0800, CRC(358dbbd3) SHA1(14b7d6ee41b19bedf2f070f5b28b03aaff2cac4f),ROM_BIOS(2)) + ROM_CONTINUE (0x1000, 0x0800) + ROM_CONTINUE (0x0800, 0x0800) + ROM_CONTINUE (0x1800, 0x0800) +ROM_END + +/* Driver */ +COMP( 1985, tim100, 0, 0, tim100, tim100, driver_device, 0, "Mihajlo Pupin Institute", "TIM-100", MACHINE_IS_SKELETON) |