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diff --git a/src/mame/drivers/modellot.cpp b/src/mame/drivers/modellot.cpp
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-// license:BSD-3-Clause
-// 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.
-
-Doco found...
-
-Port 77 out (cassette control):
-- d0 = recording signal #1
-- d1 = relay #1 (0 = open)
-- d2 = recording signal #2
-- d3 = relay #2 (0 = open)
-
-Port 77 in:
-- d0 = free
-- d1 = playback signal
-- d2 = signal from the anti-glare circuit
-- d3 = same as d2
-
-Optional ports:
-- 3c to 3f (FDC)
-- 5c to 5f (PRT)
-- 6c to 6f (US2)
-- 78 to 7b (US1)
-It's not clear if these are meant to be 3881 PIOs connected to the devices, or for
-the devices themselves. An example shows a i8251 used as the US1 device.
-
-There's a rom missing EC00-EFFF, it is used if you try to save to tape.
-All input must in UPPER case.
-
-***********************************************************************************/
-
-#include "emu.h"
-#include "cpu/z80/z80.h"
-#include "machine/keyboard.h"
-#include "emupal.h"
-#include "screen.h"
-
-
-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_maincpu(*this, "maincpu")
- , m_rom(*this, "maincpu")
- , m_ram(*this, "mainram")
- , m_p_videoram(*this, "videoram")
- , m_p_chargen(*this, "chargen")
- { }
-
- void modellot(machine_config &config);
-
-private:
- u8 port77_r();
- u8 portff_r();
- void kbd_put(u8 data);
- u32 screen_update_modellot(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-
- void io_map(address_map &map);
- void mem_map(address_map &map);
-
- u8 m_term_data;
- void machine_start() override;
- void machine_reset() override;
- memory_passthrough_handler *m_rom_shadow_tap;
- required_device<cpu_device> m_maincpu;
- required_region_ptr<u8> m_rom;
- required_shared_ptr<u8> m_ram;
- required_shared_ptr<u8> m_p_videoram;
- required_region_ptr<u8> m_p_chargen;
-};
-
-void modellot_state::mem_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0xbfff).ram().share("mainram"); // 48k ram
- map(0xc000, 0xc3ff).ram().share("videoram");
- map(0xe000, 0xffff).rom().region("maincpu", 0);
-}
-
-void modellot_state::io_map(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0xff);
- map(0x77, 0x77).r(FUNC(modellot_state::port77_r));
- map(0xff, 0xff).r(FUNC(modellot_state::portff_r));
-}
-
-
-/* Input ports */
-static INPUT_PORTS_START( modellot )
-INPUT_PORTS_END
-
-u8 modellot_state::port77_r()
-{
- return 4;
-}
-
-u8 modellot_state::portff_r()
-{
- u8 data = (m_term_data) ? (m_term_data ^ 0x7f) : 0xff;
- m_term_data = 0;
- return data;
-}
-
-void modellot_state::kbd_put(u8 data)
-{
- m_term_data = data;
-}
-
-void modellot_state::machine_reset()
-{
- m_term_data = 1;
-
- address_space &program = m_maincpu->space(AS_PROGRAM);
- program.install_rom(0x0000, 0x07ff, m_rom); // do it here for F3
- m_rom_shadow_tap = program.install_read_tap(0xe000, 0xe7ff, "rom_shadow_r",[this](offs_t offset, u8 &data, u8 mem_mask)
- {
- if (!machine().side_effects_disabled())
- {
- // delete this tap
- m_rom_shadow_tap->remove();
-
- // reinstall ram over the rom shadow
- m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x07ff, m_ram);
- }
-
- // return the original data
- return data;
- });
-}
-
-void modellot_state::machine_start()
-{
- save_item(NAME(m_term_data));
-}
-
-const gfx_layout 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( gfx_modellot )
- GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 )
-GFXDECODE_END
-
-
-u32 modellot_state::screen_update_modellot(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- u16 sy=0,ma=0;
-
- for (u8 y = 0; y < 16; y++)
- {
- for (u8 ra = 0; ra < 16; ra++)
- {
- u16 *p = &bitmap.pix(sy++);
-
- for (u16 x = 0; x < 64; x++)
- {
- u8 inv = 0;
-
- u8 chr = m_p_videoram[x+ma];
-
- if (BIT(chr, 7)) inv = 0xff;
-
- chr &= 0x7f; // cursor
-
- u8 gfx;
- 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;
-}
-
-void modellot_state::modellot(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, XTAL(4'000'000));
- m_maincpu->set_addrmap(AS_PROGRAM, &modellot_state::mem_map);
- m_maincpu->set_addrmap(AS_IO, &modellot_state::io_map);
-
- /* video hardware */
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER, rgb_t::green()));
- screen.set_refresh_hz(50);
- screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
- screen.set_size(64*8, 16*16);
- screen.set_visarea(0, 64*8-1, 0, 16*16-1);
- screen.set_screen_update(FUNC(modellot_state::screen_update_modellot));
- screen.set_palette("palette");
-
- GFXDECODE(config, "gfxdecode", "palette", gfx_modellot);
- PALETTE(config, "palette", palette_device::MONOCHROME);
-
- /* Devices */
- generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0));
- keyboard.set_keyboard_callback(FUNC(modellot_state::kbd_put));
-}
-
-/* ROM definition */
-ROM_START( modellot )
- ROM_REGION( 0x2000, "maincpu", ROMREGION_ERASEFF )
- //ROM_LOAD( "fdc8119.u3", 0x0000, 0x0400, CRC(a8aee944) SHA1(f2cc598ed2e7a1a620e2f3f53c1a573965f6af26))
- ROM_LOAD( "dt49-48.u1", 0x0000, 0x0400, CRC(2441c438) SHA1(832994a4214a744b7e19e5f74000c95ae65e3759))
- ROM_LOAD( "ht20.u2", 0x0400, 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, modellot_state, empty_init, "General Processor", "Modello T", MACHINE_IS_SKELETON | MACHINE_SUPPORTS_SAVE )
-