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Diffstat (limited to 'src/mame/drivers/dim68k.cpp')
-rw-r--r--src/mame/drivers/dim68k.cpp409
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diff --git a/src/mame/drivers/dim68k.cpp b/src/mame/drivers/dim68k.cpp
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--- a/src/mame/drivers/dim68k.cpp
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-// license:BSD-3-Clause
-// copyright-holders:Robbbert
-/***************************************************************************
-
- Micro Craft Dimension 68000
-
- 28/12/2011 Skeleton driver.
-
- This computer had the facility for plug-in cards to emulate popular
- computers of the time such as apple, trs80, kaypro, etc. The floppy
- disk parameters could be set to be able to read the disks of the
- various systems, or you create any other format you wished.
-
- There is no schematic available, so not fully able to emulate at
- this time.
-
- ToDo:
-
- - Floppy controller
- - Floppy formats (not sure if MESS supports user-defined formats)
- - Banking
- - Graphics display (including colour and video_control options)
- - DUART
- - RTC
- - RS232 interface
- - Keyboard
- - Centronics printer
- - Video-high
- - Video-reset
- - Game switches, paddles and timers
- - The plug-in boards
- - Emulator trap function
-
-****************************************************************************/
-
-#include "emu.h"
-#include "cpu/m68000/m68000.h"
-#include "imagedev/floppy.h"
-#include "machine/keyboard.h"
-#include "machine/upd765.h"
-#include "sound/spkrdev.h"
-#include "video/mc6845.h"
-#include "emupal.h"
-#include "screen.h"
-#include "softlist.h"
-#include "speaker.h"
-
-class dim68k_state : public driver_device
-{
-public:
- dim68k_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_crtc(*this, "crtc")
- , m_speaker(*this, "speaker")
- , m_ram(*this, "ram")
- , m_palette(*this, "palette")
- , m_p_chargen(*this, "chargen")
- { }
-
- void dim68k(machine_config &config);
-
-private:
- DECLARE_READ16_MEMBER( dim68k_duart_r );
- DECLARE_READ16_MEMBER( dim68k_fdc_r );
- DECLARE_READ16_MEMBER( dim68k_game_switches_r );
- DECLARE_READ16_MEMBER( dim68k_speaker_r );
- DECLARE_WRITE16_MEMBER( dim68k_banksw_w );
- DECLARE_WRITE16_MEMBER( dim68k_duart_w );
- DECLARE_WRITE16_MEMBER( dim68k_fdc_w );
- DECLARE_WRITE16_MEMBER( dim68k_printer_strobe_w );
- DECLARE_WRITE16_MEMBER( dim68k_reset_timers_w );
- DECLARE_WRITE16_MEMBER( dim68k_speaker_w );
- DECLARE_WRITE16_MEMBER( dim68k_video_control_w );
- DECLARE_WRITE16_MEMBER( dim68k_video_high_w );
- DECLARE_WRITE16_MEMBER( dim68k_video_reset_w );
- void kbd_put(u8 data);
- MC6845_UPDATE_ROW(crtc_update_row);
-
- void dim68k_mem(address_map &map);
-
- bool m_speaker_bit;
- u8 m_video_control;
- u8 m_term_data;
- virtual void machine_reset() override;
- required_device<cpu_device> m_maincpu;
- required_device<mc6845_device> m_crtc;
- required_device<speaker_sound_device> m_speaker;
- required_shared_ptr<uint16_t> m_ram;
- required_device<palette_device> m_palette;
- required_region_ptr<u8> m_p_chargen;
-};
-
-READ16_MEMBER( dim68k_state::dim68k_duart_r )
-// Port A is for the keyboard : 300 baud, no parity, 8 bits, 1 stop bit. Port B is for RS232.
-// The device also controls the parallel printer (except the strobe) and the RTC.
-// Device = SCN2681, not emulated. The keyboard is standard ASCII, so we can use the terminal
-// keyboard for now.
-{
- if (offset==3)
- return m_term_data;
- else
- return 0;
-}
-
-READ16_MEMBER( dim68k_state::dim68k_fdc_r )
-{
- return 0;
-}
-
-READ16_MEMBER( dim68k_state::dim68k_game_switches_r )
-// Reading the game port switches
-// FFCC11 = switch 0; FFCC13 = switch 1, etc to switch 3
-// FFCC19 = paddle 0; FFCC1B = paddle 1, etc to paddle 3
-{
- return 0xffff;
-}
-
-READ16_MEMBER( dim68k_state::dim68k_speaker_r )
-// Any read or write of this address will toggle the position of the speaker cone
-{
- m_speaker_bit ^= 1;
- m_speaker->level_w(m_speaker_bit);
- return 0;
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_speaker_w )
-{
- m_speaker_bit ^= 1;
- m_speaker->level_w(m_speaker_bit);
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_fdc_w )
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_video_high_w )
-// "write high byte of address in memory of start of display buffer"
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_video_control_w )
-{
-/* D7 0 = Hires/Graphics; 1= Lores/Text [not emulated yet]
- D6 0 = 8 dots per character; 1 = 7 dots [emulated]
- D5 0 = CRTC and CPU run Asynchronously; 1 = Synchronously [won't be emulated]
- D4,D3 Dot clock: 00=14MHz; 01=3.58MHz; 10=7MHz; 11=1.79MHz [emulated]
- D2 0 = Screen On; 1 = Off [emulated]
- D1 0 = Standard Chars & LoRes; 1 = Alternate Chars & HiRes [not emulated yet]
- D0 0 = Non-Mixed (all text or all Graphics); 1 = Mixed (Colour Graphics and Monochrome Text) [not emulated yet]
- */
- unsigned dots = (data & 0x40) ? 7 : 8;
- m_crtc->set_hpixels_per_column(dots);
- m_video_control = data;
-
- switch (data & 0x18)
- {
- case 0x00: m_crtc->set_unscaled_clock(XTAL(14'000'000) / dots);
- break;
- case 0x08: m_crtc->set_unscaled_clock(XTAL(3'579'545) / dots);
- break;
- case 0x10: m_crtc->set_unscaled_clock(XTAL(14'000'000) / dots / 2);
- break;
- case 0x18: m_crtc->set_unscaled_clock(XTAL(3'579'545) / dots / 2);
- break;
- }
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_video_reset_w )
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_duart_w )
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_reset_timers_w )
-// reset game port timer before reading paddles
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_printer_strobe_w )
-// anything sent here will trigger a one-shot for a strobe pulse
-{
-}
-
-WRITE16_MEMBER( dim68k_state::dim68k_banksw_w )
-// At boot time, the rom and IO occupy 0-FFFF, this moves it to the proper place
-{
-}
-
-void dim68k_state::dim68k_mem(address_map &map)
-{
- map.unmap_value_high();
- map(0x00000000, 0x00feffff).ram().share("ram"); // 16MB RAM / ROM at boot
- map(0x00ff0000, 0x00ff1fff).rom().region("bootrom", 0);
- map(0x00ff2000, 0x00ff7fff).ram(); // Graphics Video RAM
- map(0x00ff8001, 0x00ff8001).rw(m_crtc, FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
- map(0x00ff8003, 0x00ff8003).rw(m_crtc, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
- map(0x00ff8004, 0x00ff8005).w(FUNC(dim68k_state::dim68k_video_high_w));
- map(0x00ff8008, 0x00ff8009).w(FUNC(dim68k_state::dim68k_video_control_w));
- map(0x00ff800a, 0x00ff800b).w(FUNC(dim68k_state::dim68k_video_reset_w));
- map(0x00ff8800, 0x00ff8fff).rom().region("cop6512", 0); // slot 1 controller rom
- map(0x00ff9000, 0x00ff97ff).rom().region("copz80", 0); // slot 2 controller rom
- map(0x00ff9800, 0x00ff9fff).rom().region("cop8086", 0); // slot 3 controller rom
-#if 0
- map(0x00ffa000, 0x00ffa7ff).rom(); // slot 4 controller rom
- map(0x00ffa800, 0x00ffafff).rom(); // slot 5 controller rom
- map(0x00ffb000, 0x00ffb7ff).rom(); // slot 6 controller rom
-#endif
- map(0x00ffc400, 0x00ffc41f).rw(FUNC(dim68k_state::dim68k_duart_r), FUNC(dim68k_state::dim68k_duart_w)); // Signetics SCN2681AC1N40 Dual UART
- map(0x00ffc800, 0x00ffc801).rw(FUNC(dim68k_state::dim68k_speaker_r), FUNC(dim68k_state::dim68k_speaker_w));
- map(0x00ffcc00, 0x00ffcc1f).rw(FUNC(dim68k_state::dim68k_game_switches_r), FUNC(dim68k_state::dim68k_reset_timers_w));
- map(0x00ffd000, 0x00ffd003).m("fdc", FUNC(upd765a_device::map)).umask16(0x00ff); // NEC uPD765A
- map(0x00ffd004, 0x00ffd005).rw(FUNC(dim68k_state::dim68k_fdc_r), FUNC(dim68k_state::dim68k_fdc_w));
- //map(0x00ffd400, 0x00ffd403) emulation trap control
- map(0x00ffd800, 0x00ffd801).w(FUNC(dim68k_state::dim68k_printer_strobe_w));
- map(0x00ffdc00, 0x00ffdc01).w(FUNC(dim68k_state::dim68k_banksw_w));
-}
-
-/* Input ports */
-static INPUT_PORTS_START( dim68k )
-INPUT_PORTS_END
-
-
-void dim68k_state::machine_reset()
-{
- u16* ROM = &memregion("bootrom")->as_u16();
-
- memcpy((u16*)m_ram.target(), ROM, 0x2000);
-}
-
-// Text-only; graphics isn't emulated yet. Need to find out if hardware cursor is used.
-MC6845_UPDATE_ROW( dim68k_state::crtc_update_row )
-{
- const rgb_t *palette = m_palette->palette()->entry_list_raw();
- u8 chr,gfx,x,xx,inv;
- uint16_t chr16=0x2020; // set to spaces if screen is off
- uint32_t *p = &bitmap.pix32(y);
- u8 screen_on = ~m_video_control & 4;
- u8 dot8 = ~m_video_control & 40;
-
- // need to divide everything in half to cater for 16-bit reads
- x_count /= 2;
- ma /= 2;
- xx = 0;
-
- for (x = 0; x < x_count; x++)
- {
- if (screen_on)
- chr16 = m_ram[ma+x]; // reads 2 characters
-
- inv=0;
- if (xx == cursor_x && screen_on) inv=0xff;
- xx++;
-
- chr = chr16>>8;
- gfx = m_p_chargen[(chr<<4) | ra] ^ inv ^ ((chr & 0x80) ? 0xff : 0);
- *p++ = palette[BIT(gfx, 7)];
- *p++ = palette[BIT(gfx, 6)];
- *p++ = palette[BIT(gfx, 5)];
- *p++ = palette[BIT(gfx, 4)];
- *p++ = palette[BIT(gfx, 3)];
- *p++ = palette[BIT(gfx, 2)];
- *p++ = palette[BIT(gfx, 1)];
- if (dot8) *p++ = palette[BIT(gfx, 1)];
-
- inv = 0;
- if (xx == cursor_x) inv=0xff;
- xx++;
-
- chr = chr16;
- gfx = m_p_chargen[(chr<<4) | ra] ^ inv ^ ((chr & 0x80) ? 0xff : 0);
- *p++ = palette[BIT(gfx, 7)];
- *p++ = palette[BIT(gfx, 6)];
- *p++ = palette[BIT(gfx, 5)];
- *p++ = palette[BIT(gfx, 4)];
- *p++ = palette[BIT(gfx, 3)];
- *p++ = palette[BIT(gfx, 2)];
- *p++ = palette[BIT(gfx, 1)];
- if (dot8) *p++ = palette[BIT(gfx, 1)];
- }
-}
-
-/* F4 Character Displayer */
-static const gfx_layout dim68k_charlayout =
-{
- 8, 16, /* 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 */
- { 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 /* every char takes 16 bytes */
-};
-
-static GFXDECODE_START( gfx_dim68k )
- GFXDECODE_ENTRY( "chargen", 0x0000, dim68k_charlayout, 0, 1 )
-GFXDECODE_END
-
-static void dim68k_floppies(device_slot_interface &device)
-{
- device.option_add("525hd", FLOPPY_525_HD);
-}
-
-void dim68k_state::kbd_put(u8 data)
-{
- m_term_data = data;
-}
-
-void dim68k_state::dim68k(machine_config &config)
-{
- /* basic machine hardware */
- M68000(config, m_maincpu, XTAL(10'000'000));
- m_maincpu->set_addrmap(AS_PROGRAM, &dim68k_state::dim68k_mem);
-
- /* video hardware */
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_refresh_hz(50);
- screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
- screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
- screen.set_size(640, 480);
- screen.set_visarea(0, 640-1, 0, 250-1);
- PALETTE(config, m_palette, palette_device::MONOCHROME);
- GFXDECODE(config, "gfxdecode", m_palette, gfx_dim68k);
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50);
-
- /* Devices */
- UPD765A(config, "fdc", 8'000'000, true, true); // these options unknown
- FLOPPY_CONNECTOR(config, "fdc:0", dim68k_floppies, "525hd", floppy_image_device::default_floppy_formats);
- FLOPPY_CONNECTOR(config, "fdc:1", dim68k_floppies, "525hd", floppy_image_device::default_floppy_formats);
-
- MC6845(config, m_crtc, 1790000);
- m_crtc->set_screen("screen");
- m_crtc->set_show_border_area(false);
- m_crtc->set_char_width(8);
- m_crtc->set_update_row_callback(FUNC(dim68k_state::crtc_update_row));
-
- generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0));
- keyboard.set_keyboard_callback(FUNC(dim68k_state::kbd_put));
-
- // software lists
- SOFTWARE_LIST(config, "flop_list").set_original("dim68k");
-}
-
-/*
-68000
-
-MC101A 82S100
-MC102B 82S100
-MC103E 2732A
-MC104 2732A label "4050" underneath
-MC105 2732A char gen
-
-6512
-
-MC106 82LS135 U24
-MC107 82LS135 U20
-MC108 82S137 U23
-MC109 82S131 U16
-MC110 82LS135 U35
-
-Z80
-
-MC111 82S123 U11
-
-8086
-
-MC112 82LS135 U18
-MC113 82S153 U16
-*/
-/* ROM definition */
-ROM_START( dim68k )
- ROM_REGION16_BE( 0x2000, "bootrom", ROMREGION_ERASEFF )
- ROM_LOAD16_BYTE( "mc103e.bin", 0x0001, 0x1000, CRC(4730c902) SHA1(5c4bb79ad22def721a22eb63dd05e0391c8082be))
- ROM_LOAD16_BYTE( "mc104.bin", 0x0000, 0x1000, CRC(14b04575) SHA1(43e15d9ebe1c9c1bf1bcfc1be3899a49e6748200))
-
- ROM_REGION( 0x1000, "chargen", ROMREGION_ERASEFF )
- ROM_LOAD( "mc105e.bin", 0x0000, 0x1000, CRC(7a09daa8) SHA1(844bfa579293d7c3442fcbfa21bda75fff930394))
-
- // The remaining roms may not be in the correct positions or being loaded correctly
- ROM_REGION16_BE( 0x1000, "cop6512", ROMREGION_ERASEFF )
- ROM_LOAD16_WORD( "mc106.bin", 0x0000, 0x0100, CRC(11530d8a) SHA1(e3eae266535383bcaee2d84d7bed6052d40e4e4a))
- ROM_LOAD16_WORD( "mc107.bin", 0x0100, 0x0100, CRC(966db11b) SHA1(3c3105ac842602d8e01b0f924152fd672a85f00c))
- ROM_LOAD16_WORD( "mc108.bin", 0x0200, 0x0400, CRC(687f9b0a) SHA1(ed9f1265b25f89f6d3cf8cd0a7b0fb73cb129f9f))
- ROM_LOAD16_WORD( "mc109.bin", 0x0600, 0x0200, CRC(4a857f98) SHA1(9f2bbc2171fc49f65aa798c9cd7799a26afd2ddf))
- ROM_LOAD16_WORD( "mc110.bin", 0x0800, 0x0100, CRC(e207b457) SHA1(a8987ba3d1bbdb3d8b3b11cec90c532ff09e762e))
-
- ROM_REGION16_BE( 0x1000, "copz80", ROMREGION_ERASEFF )
- ROM_LOAD16_WORD( "mc111.bin", 0x0000, 0x0020, CRC(6a380057) SHA1(6522a7b3e0af9db14a6ed04d4eec3ee6e44c2dab))
-
- ROM_REGION16_BE( 0x1000, "cop8086", ROMREGION_ERASEFF )
- ROM_LOAD16_WORD( "mc112.bin", 0x0000, 0x0100, CRC(dfd4cdbb) SHA1(a7831d415943fa86c417066807038bccbabb2573))
- ROM_LOAD( "mc113.bin", 0x0100, 0x00ef, CRC(594bdf05) SHA1(36db911a27d930e023fa12683e86e9eecfffdba6))
-
- ROM_REGION( 0x1000, "mb", ROMREGION_ERASEFF ) // mainboard unknown
- ROM_LOAD( "mc102.bin", 0x0000, 0x00fa, CRC(38e2abac) SHA1(0d7e730b46fc162764c69c51dea3bbe8337b1a7d))
- ROM_LOAD( "mc101.bin", 0x0100, 0x00fa, CRC(caffb3a0) SHA1(36f5140b306565794c4d856e0c20589b8f2a37f4))
-ROM_END
-
-/* Driver */
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1984, dim68k, 0, 0, dim68k, dim68k, dim68k_state, empty_init, "Micro Craft", "Dimension 68000", MACHINE_NOT_WORKING)