// license:MAME // copyright-holders:Miodrag Milanovic, Robbbert /********************************************************************************** General Processor Modello T 2012-12-10 Skeleton driver. 2013-09-27 Added keyboard and cursor. Made in Italy, a single board with numerous small daughter boards. The 3 units (keyboard, disk drives, main unit) had wooden cabinets. It had an inbuilt small green-screen CRT, like a Kaypro, and the RAM could be 16, 32, or 48k. The FDC is a FD1791. All the articles and doco (what there is of it) is all in Italian. ***********************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/keyboard.h" #define KEYBOARD_TAG "keyboard" class modellot_state : public driver_device { public: modellot_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_READ8_MEMBER(port77_r); DECLARE_READ8_MEMBER(portff_r); DECLARE_WRITE8_MEMBER(kbd_put); UINT32 screen_update_modellot(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_shared_ptr m_p_videoram; private: UINT8 m_term_data; const UINT8 *m_p_chargen; virtual void machine_reset(); required_device m_maincpu; }; static ADDRESS_MAP_START(modellot_mem, AS_PROGRAM, 8, modellot_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0xbfff) AM_RAM // 48k ram AM_RANGE(0xc000, 0xc3ff) AM_RAM AM_SHARE("videoram") AM_RANGE(0xe000, 0xffff) AM_ROM ADDRESS_MAP_END static ADDRESS_MAP_START(modellot_io, AS_IO, 8, modellot_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x77, 0x77) AM_READ(port77_r) AM_RANGE(0xff, 0xff) AM_READ(portff_r) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( modellot ) INPUT_PORTS_END READ8_MEMBER( modellot_state::port77_r) { return 4; } READ8_MEMBER( modellot_state::portff_r) { UINT8 data = (m_term_data) ? m_term_data ^ 0x7f : 0xff; m_term_data = 0; return data; } WRITE8_MEMBER( modellot_state::kbd_put ) { m_term_data = data; } void modellot_state::machine_reset() { m_term_data = 1; m_p_chargen = memregion("chargen")->base(); m_maincpu->set_state_int(Z80_PC, 0xe000); } const gfx_layout modellot_charlayout = { 8, 16, /* 8x16 characters */ 128, /* 128 characters */ 1, /* 1 bits per pixel */ {0}, /* no bitplanes; 1 bit per pixel */ {0,1,2,3,4,5,6,7}, {0, 8, 2 * 8, 3 * 8, 4 * 8, 5 * 8, 6 * 8, 7 * 8, 0x400*8, 0x401*8, 0x402*8, 0x403*8, 0x404*8, 0x405*8, 0x406*8, 0x407*8}, 8*8 /* space between characters */ }; static GFXDECODE_START( modellot ) GFXDECODE_ENTRY( "chargen", 0x0000, modellot_charlayout, 0, 1 ) GFXDECODE_END UINT32 modellot_state::screen_update_modellot(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx,inv; UINT16 sy=0,ma=0,x; for (y = 0; y < 16; y++) { for (ra = 0; ra < 16; ra++) { UINT16 *p = &bitmap.pix16(sy++); for (x = 0; x < 64; x++) { inv = 0; chr = m_p_videoram[x+ma]; if BIT(chr, 7) inv = 0xff; chr &= 0x7f; // cursor if (ra < 8) gfx = m_p_chargen[(chr<<3) | ra ]; else gfx = m_p_chargen[(chr<<3) | (ra-8) | 0x400]; gfx ^= inv; /* 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+=64; } return 0; } static MACHINE_CONFIG_START( modellot, modellot_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) MCFG_CPU_PROGRAM_MAP(modellot_mem) MCFG_CPU_IO_MAP(modellot_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(64*8, 16*16) MCFG_SCREEN_VISIBLE_AREA(0, 64*8-1, 0, 16*16-1) MCFG_SCREEN_UPDATE_DRIVER(modellot_state, screen_update_modellot) MCFG_SCREEN_PALETTE("palette") MCFG_GFXDECODE_ADD("gfxdecode", "palette", modellot ) MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") /* Devices */ MCFG_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0) MCFG_GENERIC_KEYBOARD_CB(WRITE8(modellot_state, kbd_put)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( modellot ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) //ROM_LOAD( "fdc8119.u3", 0x0000, 0x0400, CRC(a8aee944) SHA1(f2cc598ed2e7a1a620e2f3f53c1a573965f6af26)) ROM_LOAD( "dt49-48.u1", 0xe000, 0x0400, CRC(2441c438) SHA1(832994a4214a744b7e19e5f74000c95ae65e3759)) ROM_LOAD( "ht20.u2", 0xe400, 0x0400, CRC(497c0495) SHA1(d03beebc4c31284729f6eac3bdf1fbf44adf7fff)) ROM_REGION( 0x0800, "chargen", ROMREGION_INVERT ) ROM_LOAD( "gcem1.u3", 0x0000, 0x0200, CRC(e7739268) SHA1(091ef69282abe657d5f38c70a572964f5200a1d5)) ROM_CONTINUE(0x400, 0x200) ROM_LOAD( "gcem2.u4", 0x0200, 0x0200, CRC(6614330e) SHA1(880a541fb0ef6f37ac89439f9ea75a313c3e53d6)) ROM_CONTINUE(0x600, 0x200) ROM_END /* Driver */ COMP( 1979, modellot, 0, 0, modellot, modellot, driver_device, 0, "General Processor", "Modello T", GAME_IS_SKELETON)