diff options
Diffstat (limited to 'src/mess/drivers/dim68k.c')
-rw-r--r-- | src/mess/drivers/dim68k.c | 398 |
1 files changed, 0 insertions, 398 deletions
diff --git a/src/mess/drivers/dim68k.c b/src/mess/drivers/dim68k.c deleted file mode 100644 index 7dce08a1a89..00000000000 --- a/src/mess/drivers/dim68k.c +++ /dev/null @@ -1,398 +0,0 @@ -// 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 "sound/speaker.h" -#include "video/mc6845.h" -#include "machine/keyboard.h" -#include "machine/upd765.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") { } - - 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 ); - DECLARE_WRITE8_MEMBER(kbd_put); - MC6845_UPDATE_ROW(crtc_update_row); - const UINT8 *m_p_chargen; - bool m_speaker_bit; - UINT8 m_video_control; - UINT8 m_term_data; - virtual void machine_reset(); - virtual void video_start(); - required_device<cpu_device> m_maincpu; - required_device<mc6845_device> m_crtc; - required_device<speaker_sound_device> m_speaker; - required_shared_ptr<UINT16> m_ram; - required_device<palette_device> m_palette; -}; - -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] - */ - m_crtc->set_hpixels_per_column((data & 0x40) ? 7 : 8); - m_video_control = data; - - switch (data & 0x18) - { - case 0x00: m_crtc->set_clock(XTAL_14MHz); - break; - case 0x08: m_crtc->set_clock(XTAL_3_579545MHz); - break; - case 0x10: m_crtc->set_clock(XTAL_14MHz / 2); - break; - case 0x18: m_crtc->set_clock(XTAL_3_579545MHz / 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 -{ -} - -static ADDRESS_MAP_START(dim68k_mem, AS_PROGRAM, 16, dim68k_state) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE(0x00000000, 0x00feffff) AM_RAM AM_SHARE("ram") // 16MB RAM / ROM at boot - AM_RANGE(0x00ff0000, 0x00ff1fff) AM_ROM AM_REGION("bootrom", 0) - AM_RANGE(0x00ff2000, 0x00ff7fff) AM_RAM // Graphics Video RAM - AM_RANGE(0x00ff8000, 0x00ff8001) AM_DEVREADWRITE8("crtc", mc6845_device, status_r, address_w, 0xff) - AM_RANGE(0x00ff8002, 0x00ff8003) AM_DEVREADWRITE8("crtc", mc6845_device, register_r, register_w, 0xff) - AM_RANGE(0x00ff8004, 0x00ff8005) AM_WRITE(dim68k_video_high_w) - AM_RANGE(0x00ff8008, 0x00ff8009) AM_WRITE(dim68k_video_control_w) - AM_RANGE(0x00ff800a, 0x00ff800b) AM_WRITE(dim68k_video_reset_w) - AM_RANGE(0x00ff8800, 0x00ff8fff) AM_ROM AM_REGION("cop6512",0) // slot 1 controller rom - AM_RANGE(0x00ff9000, 0x00ff97ff) AM_ROM AM_REGION("copz80",0) // slot 2 controller rom - AM_RANGE(0x00ff9800, 0x00ff9fff) AM_ROM AM_REGION("cop8086",0) // slot 3 controller rom -#if 0 - AM_RANGE(0x00ffa000, 0x00ffa7ff) AM_ROM // slot 4 controller rom - AM_RANGE(0x00ffa800, 0x00ffafff) AM_ROM // slot 5 controller rom - AM_RANGE(0x00ffb000, 0x00ffb7ff) AM_ROM // slot 6 controller rom -#endif - AM_RANGE(0x00ffc400, 0x00ffc41f) AM_READWRITE(dim68k_duart_r,dim68k_duart_w) // Signetics SCN2681AC1N40 Dual UART - AM_RANGE(0x00ffc800, 0x00ffc801) AM_READWRITE(dim68k_speaker_r,dim68k_speaker_w) - AM_RANGE(0x00ffcc00, 0x00ffcc1f) AM_READWRITE(dim68k_game_switches_r,dim68k_reset_timers_w) - AM_RANGE(0x00ffd000, 0x00ffd003) AM_DEVICE8("fdc",upd765a_device,map,0x00ff) // NEC uPD765A - AM_RANGE(0x00ffd004, 0x00ffd005) AM_READWRITE(dim68k_fdc_r,dim68k_fdc_w) - //AM_RANGE(0x00ffd400, 0x00ffd403) emulation trap control - AM_RANGE(0x00ffd800, 0x00ffd801) AM_WRITE(dim68k_printer_strobe_w) - AM_RANGE(0x00ffdc00, 0x00ffdc01) AM_WRITE(dim68k_banksw_w) -ADDRESS_MAP_END - -/* Input ports */ -static INPUT_PORTS_START( dim68k ) -INPUT_PORTS_END - - -void dim68k_state::machine_reset() -{ - UINT8* ROM = memregion("bootrom")->base(); - - memcpy((UINT8*)m_ram.target(), ROM, 0x2000); - - m_maincpu->reset(); -} - -void dim68k_state::video_start() -{ - m_p_chargen = memregion("chargen")->base(); -} - -// 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(); - UINT8 chr,gfx,x,xx,inv; - UINT16 chr16=0x2020; // set to spaces if screen is off - UINT32 *p = &bitmap.pix32(y); - UINT8 screen_on = ~m_video_control & 4; - UINT8 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( dim68k ) - GFXDECODE_ENTRY( "chargen", 0x0000, dim68k_charlayout, 0, 1 ) -GFXDECODE_END - -static SLOT_INTERFACE_START( dim68k_floppies ) - SLOT_INTERFACE( "525hd", FLOPPY_525_HD ) -SLOT_INTERFACE_END - -WRITE8_MEMBER( dim68k_state::kbd_put ) -{ - m_term_data = data; -} - -static MACHINE_CONFIG_START( dim68k, dim68k_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu", M68000, XTAL_10MHz) - MCFG_CPU_PROGRAM_MAP(dim68k_mem) - - /* video hardware */ - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_REFRESH_RATE(50) - MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ - MCFG_SCREEN_UPDATE_DEVICE("crtc", mc6845_device, screen_update) - MCFG_SCREEN_SIZE(640, 480) - MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 250-1) - MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") - MCFG_GFXDECODE_ADD("gfxdecode", "palette", dim68k) - - /* sound hardware */ - MCFG_SPEAKER_STANDARD_MONO("mono") - MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) - - /* Devices */ - MCFG_UPD765A_ADD("fdc", true, true) // these options unknown - MCFG_FLOPPY_DRIVE_ADD("fdc:0", dim68k_floppies, "525hd", floppy_image_device::default_floppy_formats) - MCFG_FLOPPY_DRIVE_ADD("fdc:1", dim68k_floppies, "525hd", floppy_image_device::default_floppy_formats) - - MCFG_MC6845_ADD("crtc", MC6845, "screen", 1790000) - MCFG_MC6845_SHOW_BORDER_AREA(false) - MCFG_MC6845_CHAR_WIDTH(8) - MCFG_MC6845_UPDATE_ROW_CB(dim68k_state, crtc_update_row) - - MCFG_DEVICE_ADD("keyboard", GENERIC_KEYBOARD, 0) - MCFG_GENERIC_KEYBOARD_CB(WRITE8(dim68k_state, kbd_put)) -MACHINE_CONFIG_END - -/* -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_REGION( 0x2000, "bootrom", ROMREGION_ERASEFF ) - ROM_LOAD16_BYTE( "mc103e.bin", 0x0000, 0x1000, CRC(4730c902) SHA1(5c4bb79ad22def721a22eb63dd05e0391c8082be)) - ROM_LOAD16_BYTE( "mc104.bin", 0x0001, 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_REGION( 0x1000, "cop6512", ROMREGION_ERASEFF ) - ROM_LOAD16_WORD_SWAP( "mc106.bin", 0x0000, 0x0100, CRC(11530d8a) SHA1(e3eae266535383bcaee2d84d7bed6052d40e4e4a)) - ROM_LOAD16_WORD_SWAP( "mc107.bin", 0x0100, 0x0100, CRC(966db11b) SHA1(3c3105ac842602d8e01b0f924152fd672a85f00c)) - ROM_LOAD16_WORD_SWAP( "mc108.bin", 0x0200, 0x0400, CRC(687f9b0a) SHA1(ed9f1265b25f89f6d3cf8cd0a7b0fb73cb129f9f)) - ROM_LOAD16_WORD_SWAP( "mc109.bin", 0x0600, 0x0200, CRC(4a857f98) SHA1(9f2bbc2171fc49f65aa798c9cd7799a26afd2ddf)) - ROM_LOAD16_WORD_SWAP( "mc110.bin", 0x0800, 0x0100, CRC(e207b457) SHA1(a8987ba3d1bbdb3d8b3b11cec90c532ff09e762e)) - - ROM_REGION( 0x1000, "copz80", ROMREGION_ERASEFF ) - ROM_LOAD16_WORD_SWAP( "mc111.bin", 0x0000, 0x0020, CRC(6a380057) SHA1(6522a7b3e0af9db14a6ed04d4eec3ee6e44c2dab)) - - ROM_REGION( 0x1000, "cop8086", ROMREGION_ERASEFF ) - ROM_LOAD16_WORD_SWAP( "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 INIT COMPANY FULLNAME FLAGS */ -COMP( 1984, dim68k, 0, 0, dim68k, dim68k, driver_device, 0, "Micro Craft", "Dimension 68000", MACHINE_NOT_WORKING) |