diff options
Diffstat (limited to 'src/mess/drivers/ami1200.c')
-rw-r--r-- | src/mess/drivers/ami1200.c | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/src/mess/drivers/ami1200.c b/src/mess/drivers/ami1200.c new file mode 100644 index 00000000000..51f72a206a7 --- /dev/null +++ b/src/mess/drivers/ami1200.c @@ -0,0 +1,415 @@ +/* + Amiga 1200 + + Preliminary MAME driver by Mariusz Wojcieszek + CD-ROM controller by Ernesto Corvi + Borrowed by incog for MESS + + 2009-05 Fabio Priuli: + Amiga 1200 support is just sketched (I basically took cd32 and removed Akiko). I connected + the floppy drive in the same way as in amiga.c but it seems to be not working, since I + tried to load WB3.1 with no success. However, this problem may be due to anything: maybe + the floppy code must be connected elsewhere, or the .adf image is broken, or I made some + stupid mistake in the CIA interfaces. + Later, it could be wise to re-factor this source and merge the non-AGA code with + mess/drivers/amiga.c +*/ + +#include "emu.h" +#include "cpu/m68000/m68000.h" +#include "machine/6526cia.h" +#include "machine/i2cmem.h" +#include "machine/amigafdc.h" +#include "machine/amigakbd.h" + +#include "includes/amiga.h" +#include "includes/cd32.h" + + + +class ami1200_state : public amiga_state +{ +public: + ami1200_state(const machine_config &mconfig, device_type type, const char *tag) + : amiga_state(mconfig, type, tag) { } + + UINT16 m_potgo_value; + int m_cd32_shifter[2]; + int m_oldstate[2]; + DECLARE_WRITE32_MEMBER(aga_overlay_w); + DECLARE_DRIVER_INIT(a1200); +}; + + + +#define A1200PAL_XTAL_X1 XTAL_28_37516MHz +#define A1200PAL_XTAL_X2 XTAL_4_433619MHz + + + +static void handle_cd32_joystick_cia(ami1200_state *state, UINT8 pra, UINT8 dra); + +WRITE32_MEMBER(ami1200_state::aga_overlay_w) +{ + if (ACCESSING_BITS_16_23) + { + data = (data >> 16) & 1; + + /* switch banks as appropriate */ + membank("bank1")->set_entry(data & 1); + + /* swap the write handlers between ROM and bank 1 based on the bit */ + if ((data & 1) == 0) + /* overlay disabled, map RAM on 0x000000 */ + space.install_write_bank(0x000000, 0x1fffff, "bank1"); + else + /* overlay enabled, map Amiga system ROM on 0x000000 */ + space.unmap_write(0x000000, 0x1fffff); + } +} + +/************************************* + * + * CIA-A port A access: + * + * PA7 = game port 1, pin 6 (fire) + * PA6 = game port 0, pin 6 (fire) + * PA5 = /RDY (disk ready) + * PA4 = /TK0 (disk track 00) + * PA3 = /WPRO (disk write protect) + * PA2 = /CHNG (disk change) + * PA1 = /LED (LED, 0=bright / audio filter control) + * PA0 = MUTE + * + *************************************/ + +static WRITE8_DEVICE_HANDLER( ami1200_cia_0_porta_w ) +{ + ami1200_state *state = device->machine().driver_data<ami1200_state>(); + + /* bit 2 = Power Led on Amiga */ + set_led_status(device->machine(), 0, !BIT(data, 1)); + + handle_cd32_joystick_cia(state, data, mos6526_r(device, 2)); +} + +/************************************* + * + * CIA-A port B access: + * + * PB7 = parallel data 7 + * PB6 = parallel data 6 + * PB5 = parallel data 5 + * PB4 = parallel data 4 + * PB3 = parallel data 3 + * PB2 = parallel data 2 + * PB1 = parallel data 1 + * PB0 = parallel data 0 + * + *************************************/ + +static READ8_DEVICE_HANDLER( ami1200_cia_0_portb_r ) +{ + /* parallel port */ + logerror("%s:CIA0_portb_r\n", device->machine().describe_context()); + return 0xff; +} + +static WRITE8_DEVICE_HANDLER( ami1200_cia_0_portb_w ) +{ + /* parallel port */ + logerror("%s:CIA0_portb_w(%02x)\n", device->machine().describe_context(), data); +} + +static ADDRESS_MAP_START( a1200_map, AS_PROGRAM, 32, ami1200_state ) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x000000, 0x1fffff) AM_RAMBANK("bank1") AM_SHARE("chip_ram") + AM_RANGE(0xbfa000, 0xbfa003) AM_WRITE(aga_overlay_w) + AM_RANGE(0xbfd000, 0xbfefff) AM_READWRITE16_LEGACY(amiga_cia_r, amiga_cia_w, 0xffffffff) + AM_RANGE(0xc00000, 0xdfffff) AM_READWRITE16_LEGACY(amiga_custom_r, amiga_custom_w, 0xffffffff) AM_SHARE("custom_regs") + AM_RANGE(0xe80000, 0xe8ffff) AM_READWRITE16_LEGACY(amiga_autoconfig_r, amiga_autoconfig_w, 0xffffffff) + AM_RANGE(0xf80000, 0xffffff) AM_ROM AM_REGION("user1", 0) /* Kickstart */ +ADDRESS_MAP_END + + +//int cd32_input_port_val = 0; +//int cd32_input_select = 0; + +static void cd32_potgo_w(running_machine &machine, UINT16 data) +{ + ami1200_state *state = machine.driver_data<ami1200_state>(); + int i; + + state->m_potgo_value = state->m_potgo_value & 0x5500; + state->m_potgo_value |= data & 0xaa00; + + for (i = 0; i < 8; i += 2) + { + UINT16 dir = 0x0200 << i; + if (data & dir) + { + UINT16 d = 0x0100 << i; + state->m_potgo_value &= ~d; + state->m_potgo_value |= data & d; + } + } + for (i = 0; i < 2; i++) + { + UINT16 p5dir = 0x0200 << (i * 4); /* output enable P5 */ + UINT16 p5dat = 0x0100 << (i * 4); /* data P5 */ + if ((state->m_potgo_value & p5dir) && (state->m_potgo_value & p5dat)) + state->m_cd32_shifter[i] = 8; + } +} + +static void handle_cd32_joystick_cia(ami1200_state *state, UINT8 pra, UINT8 dra) +{ + int i; + + for (i = 0; i < 2; i++) + { + UINT8 but = 0x40 << i; + UINT16 p5dir = 0x0200 << (i * 4); /* output enable P5 */ + UINT16 p5dat = 0x0100 << (i * 4); /* data P5 */ + if (!(state->m_potgo_value & p5dir) || !(state->m_potgo_value & p5dat)) + { + if ((dra & but) && (pra & but) != state->m_oldstate[i]) + { + if (!(pra & but)) + { + state->m_cd32_shifter[i]--; + if (state->m_cd32_shifter[i] < 0) + state->m_cd32_shifter[i] = 0; + } + } + } + state->m_oldstate[i] = pra & but; + } +} + + +static INPUT_PORTS_START( a1200 ) + PORT_START("CIA0PORTA") + PORT_BIT( 0x3f, IP_ACTIVE_LOW, IPT_SPECIAL ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + + PORT_START("CIA0PORTB") + PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("JOY0DAT") + PORT_BIT( 0x0303, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ami1200_state,amiga_joystick_convert, "P1JOY") + PORT_BIT( 0xfcfc, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START("JOY1DAT") + PORT_BIT( 0x0303, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ami1200_state,amiga_joystick_convert, "P2JOY") + PORT_BIT( 0xfcfc, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START("POTGO") + PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) + PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_UNUSED ) + PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) + PORT_BIT( 0xaaff, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START("P1JOY") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(1) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) + + PORT_START("P2JOY") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) + + PORT_START("P0MOUSEX") + PORT_BIT( 0xff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(1) + + PORT_START("P0MOUSEY") + PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(1) + + PORT_START("P1MOUSEX") + PORT_BIT( 0xff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(2) + + PORT_START("P1MOUSEY") + PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(2) + + PORT_INCLUDE( amiga_us_keyboard ) +INPUT_PORTS_END + + +/************************************* + * + * Sound definitions + * + *************************************/ + +static READ8_DEVICE_HANDLER( a1200_cia_0_portA_r ) +{ + UINT8 ret = device->machine().root_device().ioport("CIA0PORTA")->read() & 0xc0; /* Gameport 1 and 0 buttons */ + ret |= device->machine().device<amiga_fdc>("fdc")->ciaapra_r(); + return ret; +} + + +static const mos6526_interface a1200_cia_0_intf = +{ + 0, /* tod_clock */ + DEVCB_DEVICE_LINE("cia_0", amiga_cia_0_irq), /* irq_func */ + DEVCB_NULL, /* pc_func */ + DEVCB_NULL, + DEVCB_NULL, + DEVCB_DEVICE_HANDLER("cia_0", a1200_cia_0_portA_r), + DEVCB_DEVICE_HANDLER("cia_0", ami1200_cia_0_porta_w), /* port A */ + DEVCB_DEVICE_HANDLER("cia_0", ami1200_cia_0_portb_r), + DEVCB_DEVICE_HANDLER("cia_0", ami1200_cia_0_portb_w) /* port B */ +}; + +static const mos6526_interface a1200_cia_1_intf = +{ + 0, /* tod_clock */ + DEVCB_DEVICE_LINE("cia_1", amiga_cia_1_irq), /* irq_func */ + DEVCB_NULL, /* pc_func */ + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, /* port A */ + DEVCB_NULL, + DEVCB_DEVICE_MEMBER("fdc", amiga_fdc, ciaaprb_w) /* port B */ +}; + +static SLOT_INTERFACE_START( amiga_floppies ) + SLOT_INTERFACE( "35dd", FLOPPY_35_DD ) +SLOT_INTERFACE_END + + +static MACHINE_CONFIG_START( a1200n, ami1200_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", M68EC020, AMIGA_68EC020_NTSC_CLOCK) /* 14.3 Mhz */ + MCFG_CPU_PROGRAM_MAP(a1200_map) + +// MCFG_CPU_ADD("keyboard_mpu", MC68HC05) + + MCFG_MACHINE_RESET(amiga) + + /* video hardware */ + MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK) + + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(59.997) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) + MCFG_SCREEN_SIZE(512*2, 312) + MCFG_SCREEN_VISIBLE_AREA((129-8-8)*2, (449+8-1+8)*2, 44-8, 300+8-1) + MCFG_SCREEN_UPDATE_STATIC(amiga_aga) + + MCFG_VIDEO_START(amiga_aga) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") + + MCFG_SOUND_ADD("amiga", AMIGA, XTAL_28_63636MHz/8) + MCFG_SOUND_ROUTE(0, "lspeaker", 0.25) + MCFG_SOUND_ROUTE(1, "rspeaker", 0.25) + MCFG_SOUND_ROUTE(2, "rspeaker", 0.25) + MCFG_SOUND_ROUTE(3, "lspeaker", 0.25) + + /* cia */ + MCFG_MOS8520_ADD("cia_0", AMIGA_68EC020_NTSC_CLOCK / 10, a1200_cia_0_intf) + MCFG_MOS8520_ADD("cia_1", AMIGA_68EC020_NTSC_CLOCK / 10, a1200_cia_1_intf) + + /* fdc */ + MCFG_AMIGA_FDC_ADD("fdc", AMIGA_68EC020_NTSC_CLOCK/2) + MCFG_FLOPPY_DRIVE_ADD("fd0", amiga_floppies, "35dd", 0, amiga_fdc::floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("fd1", amiga_floppies, 0, 0, amiga_fdc::floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("fd2", amiga_floppies, 0, 0, amiga_fdc::floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("fd3", amiga_floppies, 0, 0, amiga_fdc::floppy_formats) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_DERIVED( a1200p, a1200n ) + + /* adjust for PAL specs */ + MCFG_CPU_MODIFY("maincpu") + MCFG_CPU_CLOCK(A1200PAL_XTAL_X1/2) /* 14.18758 MHz */ + + /* video hardware */ + MCFG_SCREEN_MODIFY("screen") + MCFG_SCREEN_REFRESH_RATE(50) + + /* sound hardware */ + MCFG_SOUND_MODIFY("amiga") + MCFG_SOUND_CLOCK(A1200PAL_XTAL_X1/8) /* 3.546895 MHz */ + + /* cia */ + MCFG_DEVICE_MODIFY("cia_0") + MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/20) + MCFG_DEVICE_MODIFY("cia_1") + MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/20) + + /* fdc */ + MCFG_DEVICE_MODIFY("fdc") + MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/4) +MACHINE_CONFIG_END + + +/*************************************************************************** + ROM DEFINITIONS +***************************************************************************/ + +ROM_START( a1200n ) + ROM_REGION32_BE(0x080000, "user1", 0) + ROM_DEFAULT_BIOS("kick31") + ROM_SYSTEM_BIOS(0, "kick30", "Kickstart 3.0 (39.106)") + ROMX_LOAD("391523-01.u6a", 0x000000, 0x040000, CRC(c742a412) SHA1(999eb81c65dfd07a71ee19315d99c7eb858ab186), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(1)) + ROMX_LOAD("391524-01.u6b", 0x000002, 0x040000, CRC(d55c6ec6) SHA1(3341108d3a402882b5ef9d3b242cbf3c8ab1a3e9), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(1)) + ROM_SYSTEM_BIOS(1, "kick31", "Kickstart 3.1 (40.068)") + ROMX_LOAD("391773-01.u6a", 0x000000, 0x040000, CRC(08dbf275) SHA1(b8800f5f909298109ea69690b1b8523fa22ddb37), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(2)) // ROM_LOAD32_WORD_SWAP! + ROMX_LOAD("391774-01.u6b", 0x000002, 0x040000, CRC(16c07bf8) SHA1(90e331be1970b0e53f53a9b0390b51b59b3869c2), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(2)) + + // COMMODORE | 391508-01 REV0 | KEYBOARD MPU + ROM_REGION(0x1040, "keyboard_rev0", 0) + ROM_LOAD("391508-01.u13", 0x0000, 0x1040, NO_DUMP) + + // Amiga Tech REV1 Keyboard MPU + ROM_REGION(0x2f40, "keyboard_rev1", 0) + ROM_LOAD("391508-02.u13", 0x0000, 0x2f40, NO_DUMP) +ROM_END + +#define rom_a1200p rom_a1200n + + +/***************************************************************************************************/ + +DRIVER_INIT_MEMBER(ami1200_state,a1200) +{ + static const amiga_machine_interface cd32_intf = + { + AGA_CHIP_RAM_MASK, + NULL, NULL, /* joy0dat_r & joy1dat_r */ + cd32_potgo_w, /* potgo_w */ + NULL, /* serdat_w */ + NULL, /* scanline0_callback */ + NULL, /* reset_callback */ + NULL, /* nmi_callback */ + FLAGS_AGA_CHIPSET /* flags */ + }; + + /* configure our Amiga setup */ + amiga_machine_config(machine(), &cd32_intf); + + /* set up memory */ + membank("bank1")->configure_entry(0, m_chip_ram); + membank("bank1")->configure_entry(1, machine().root_device().memregion("user1")->base()); + + /* initialize keyboard */ + amigakbd_init(machine()); +} + + +/***************************************************************************************************/ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */ +COMP( 1992, a1200n, 0, 0, a1200n, a1200, ami1200_state, a1200, "Commodore Business Machines", "Amiga 1200 (NTSC)" , GAME_NOT_WORKING ) +COMP( 1992, a1200p, a1200n, 0, a1200p, a1200, ami1200_state, a1200, "Commodore Business Machines", "Amiga 1200 (PAL)" , GAME_NOT_WORKING ) |