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mame/src/mess/drivers/cgc7900.c
Miodrag Milanovic 0e19f641d3 Cleanups and version bump
2013-01-11 07:32:46 +00:00

500 lines
17 KiB
C
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/***************************************************************************
Chromatics CGC 7900
05/04/2010 Skeleton driver.
****************************************************************************/
/*
TODO:
- does not boot
- interrupts
- vsync interrupt
- map ROM to 000000-000007 at boot
- floppy
- bitmap display
- Z mode read/write
- color status write
- bitmap roll
- overlay roll
- keyboard
- joystick
- light pen
- memory parity
- sync
- disk DMA
- PIO DMA
- serial port controller
- HVG
- OMTI Series 10 SCSI controller (8" Winchester HD)
*/
#include "includes/cgc7900.h"
/***************************************************************************
PARAMETERS
***************************************************************************/
#define INT_RTC 0x0001
#define INT_RS449_TXRDY 0x0002
#define INT_BINT2 0x0004
#define INT_RS232_TXRDY 0x0008
#define INT_DISK 0x0010
#define INT_BINT3 0x0020
#define INT_BEZEL 0x0040
#define INT_KEYBOARD 0x0080
#define INT_RS449_RXRDY 0x0100
#define INT_LIGHT_PEN 0x0200
#define INT_BINT4 0x0400
#define INT_JOYSTICK 0x0800
#define INT_VSYNC 0x1000
#define INT_BINT5 0x2000
#define INT_BINT1 0x4000
#define INT_RS232_RXRDY 0x8000
static const int INT_LEVEL[] = { 5, 4, 5, 4, 4, 5, 4, 5, 5, 4, 5, 4, 4, 5, 4, 5 };
/***************************************************************************
READ/WRITE HANDLERS
***************************************************************************/
/*-------------------------------------------------
keyboard_r - keyboard data read
-------------------------------------------------*/
READ16_MEMBER( cgc7900_state::keyboard_r )
{
/*
bit description
0 key data bit 0
1 key data bit 1
2 key data bit 2
3 key data bit 3
4 key data bit 4
5 key data bit 5
6 key data bit 6
7 key data bit 7
8 SHIFT key
9 CTRL key
10 M1 key
11 M2 key
12
13
14
15
*/
return 0;
}
/*-------------------------------------------------
keyboard_w - keyboard data write
-------------------------------------------------*/
WRITE16_MEMBER( cgc7900_state::keyboard_w )
{
/*
bit description
0 LED select bit 0
1 LED select bit 1
2 LED select bit 2
3 LED select bit 3
4 LED select bit 4
5
6
7 LED switch (1=on, 0=off)
8
9
10
11
12
13
14
15
*/
}
/*-------------------------------------------------
interrupt_mask_w - interrupt mask write
-------------------------------------------------*/
WRITE16_MEMBER( cgc7900_state::interrupt_mask_w )
{
/*
bit description
0 real time clock
1 RS-449 Tx ready
2 BINT 2
3 RS-232 Tx ready
4 disk
5 BINT 3
6 bezel keys
7 keyboard
8 RS-449 Rx ready
9 light pen
10 BINT 4
11 joystick
12 vertical retrace
13 BINT 5
14 BINT 1
15 RS-232 Rx ready
*/
m_int_mask = data;
}
/*-------------------------------------------------
disk_data_r - disk data read
-------------------------------------------------*/
READ16_MEMBER( cgc7900_state::disk_data_r )
{
return 0;
}
/*-------------------------------------------------
disk_data_w - disk data write
-------------------------------------------------*/
WRITE16_MEMBER( cgc7900_state::disk_data_w )
{
}
/*-------------------------------------------------
disk_status_r - disk status read
-------------------------------------------------*/
READ16_MEMBER( cgc7900_state::disk_status_r )
{
/*
bit signal description
0 _I/O input/output
1 _REQ request
2 _BSY busy
3 C/_D control/data
4 _MSG message
5 _RDY ready
6
7
8
9
10
11
12
13
14
15
*/
return 0xffff - 0x04;
}
/*-------------------------------------------------
disk_command_w - disk command write
-------------------------------------------------*/
WRITE16_MEMBER( cgc7900_state::disk_command_w )
{
}
/***************************************************************************
MEMORY MAPS
***************************************************************************/
/*-------------------------------------------------
ADDRESS_MAP( cgc7900_mem )
-------------------------------------------------*/
static ADDRESS_MAP_START( cgc7900_mem, AS_PROGRAM, 16, cgc7900_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000000, 0x000007) AM_ROM AM_REGION(M68000_TAG, 0)
AM_RANGE(0x000008, 0x1fffff) AM_RAM AM_SHARE("chrom_ram")
AM_RANGE(0x800000, 0x80ffff) AM_ROM AM_REGION(M68000_TAG, 0)
AM_RANGE(0xa00000, 0xbfffff) AM_READWRITE(z_mode_r, z_mode_w)
AM_RANGE(0xc00000, 0xdfffff) AM_RAM AM_SHARE("plane_ram")
AM_RANGE(0xe00000, 0xe1ffff) AM_WRITE(color_status_w)
// AM_RANGE(0xe20000, 0xe23fff) Raster Processor
AM_RANGE(0xe30000, 0xe303ff) AM_RAM AM_SHARE("clut_ram")
AM_RANGE(0xe38000, 0xe3bfff) AM_RAM AM_SHARE("overlay_ram")
AM_RANGE(0xe40000, 0xe40001) AM_RAM AM_SHARE("roll_bitmap")
AM_RANGE(0xe40002, 0xe40003) AM_RAM AM_SHARE("pan_x")
AM_RANGE(0xe40004, 0xe40005) AM_RAM AM_SHARE("pan_y")
AM_RANGE(0xe40006, 0xe40007) AM_RAM AM_SHARE("zoom")
AM_RANGE(0xe40008, 0xe40009) AM_RAM
AM_RANGE(0xe4000a, 0xe4000f) AM_RAM // Raster Processor
AM_RANGE(0xe40010, 0xe40011) AM_RAM AM_SHARE("blink_select")
AM_RANGE(0xe40012, 0xe40013) AM_RAM AM_SHARE("plane_select")
AM_RANGE(0xe40014, 0xe40015) AM_RAM AM_SHARE("plane_switch")
AM_RANGE(0xe40016, 0xe40017) AM_RAM AM_SHARE("color_status_fg")
AM_RANGE(0xe40018, 0xe40019) AM_RAM AM_SHARE("color_status_bg")
AM_RANGE(0xe4001a, 0xe4001b) AM_RAM AM_SHARE("roll_overlay")
AM_RANGE(0xe4001c, 0xe40fff) AM_RAM
// AM_RANGE(0xefc440, 0xefc441) HVG Load X
// AM_RANGE(0xefc442, 0xefc443) HVG Load Y
// AM_RANGE(0xefc444, 0xefc445) HVG Load dX
// AM_RANGE(0xefc446, 0xefc447) HVG Load dY
// AM_RANGE(0xefc448, 0xefc449) HVG Load Pixel Color
// AM_RANGE(0xefc44a, 0xefc44b) HVG Load Trip
AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8(INS8251_0_TAG, i8251_device, data_r, data_w, 0xff00)
AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8(INS8251_0_TAG, i8251_device, status_r, control_w, 0xff00)
AM_RANGE(0xff8040, 0xff8041) AM_DEVREADWRITE8(INS8251_1_TAG, i8251_device, data_r, data_w, 0xff00)
AM_RANGE(0xff8042, 0xff8043) AM_DEVREADWRITE8(INS8251_1_TAG, i8251_device, status_r, control_w, 0xff00)
AM_RANGE(0xff8080, 0xff8081) AM_READWRITE(keyboard_r, keyboard_w)
// AM_RANGE(0xff80c6, 0xff80c7) Joystick X axis
// AM_RANGE(0xff80ca, 0xff80cb) Joystick Y axis
// AM_RANGE(0xff80cc, 0xff80cd) Joystick Z axis
AM_RANGE(0xff8100, 0xff8101) AM_READWRITE(disk_data_r, disk_data_w)
AM_RANGE(0xff8120, 0xff8121) AM_READWRITE(disk_status_r, disk_command_w)
AM_RANGE(0xff8140, 0xff8141) AM_READ_PORT("BEZEL")
// AM_RANGE(0xff8180, 0xff8181) AM_DEVWRITE8(K1135A_TAG, k1135a_w, 0xff00) Baud rate generator
// AM_RANGE(0xff81c0, 0xff81ff) AM_DEVREADWRITE8(MM58167_TAG, mm58167_r, mm58167_w, 0xff00)
AM_RANGE(0xff8200, 0xff8201) AM_WRITE(interrupt_mask_w)
// AM_RANGE(0xff8240, 0xff8241) Light Pen enable
// AM_RANGE(0xff8242, 0xff8243) Light Pen X value
// AM_RANGE(0xff8244, 0xff8245) Light Pen Y value
// AM_RANGE(0xff8246, 0xff8247) Buffer memory parity check
// AM_RANGE(0xff8248, 0xff8249) Buffer memory parity set/reset
AM_RANGE(0xff824a, 0xff824b) AM_READ(sync_r)
AM_RANGE(0xff83c0, 0xff83c1) AM_DEVWRITE8_LEGACY(AY8910_TAG, ay8910_address_w, 0xff00)
AM_RANGE(0xff83c2, 0xff83c3) AM_DEVREAD8_LEGACY(AY8910_TAG, ay8910_r, 0xff00)
AM_RANGE(0xff83c4, 0xff83c5) AM_DEVWRITE8_LEGACY(AY8910_TAG, ay8910_data_w, 0xff00)
// AM_RANGE(0xff8500, 0xff8501) Disk DMA Command Register
// AM_RANGE(0xff8502, 0xff8503) Disk DMA Address Register
// AM_RANGE(0xff8507, 0xff8507) Disk DMA Control/Status Register
ADDRESS_MAP_END
/*-------------------------------------------------
ADDRESS_MAP( keyboard_mem )
-------------------------------------------------*/
static ADDRESS_MAP_START( keyboard_mem, AS_PROGRAM, 8, cgc7900_state )
AM_RANGE(0x000, 0x7ff) AM_ROM
ADDRESS_MAP_END
/*-------------------------------------------------
ADDRESS_MAP( keyboard_io )
-------------------------------------------------*/
static ADDRESS_MAP_START( keyboard_io, AS_IO, 8, cgc7900_state )
/* AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1)
AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2)
AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1)
AM_RANGE(MCS48_PORT_BUS, MCS48_PORT_BUS)*/
ADDRESS_MAP_END
/***************************************************************************
INPUT PORTS
***************************************************************************/
/*-------------------------------------------------
INPUT_PORTS( cgc7900 )
-------------------------------------------------*/
static INPUT_PORTS_START( cgc7900 )
PORT_START("BEZEL")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 7")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 8")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 5")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 6")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 3")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 4")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 1")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 2")
PORT_START("JOYSTICK_X")
PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_X ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)
PORT_START("JOYSTICK_Y")
PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_Y ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)
PORT_START("JOYSTICK_Z")
PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_Z ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)
PORT_START("LIGHT_PEN_X")
PORT_BIT( 0x1ff, 0x100, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_MINMAX(0, 511) PORT_SENSITIVITY(20) PORT_KEYDELTA(25)
PORT_START("LIGHT_PEN_Y")
PORT_BIT( 0x1ff, 0x0c0, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_MINMAX(0, 383) PORT_SENSITIVITY(20) PORT_KEYDELTA(25)
INPUT_PORTS_END
/***************************************************************************
DEVICE CONFIGURATION
***************************************************************************/
/*-------------------------------------------------
i8251_interface rs232_intf
-------------------------------------------------*/
static const i8251_interface rs232_intf =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
/*-------------------------------------------------
i8251_interface rs449_intf
-------------------------------------------------*/
static const i8251_interface rs449_intf =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
/*-------------------------------------------------
ay8910_interface ay8910_intf
-------------------------------------------------*/
static const ay8910_interface ay8910_intf =
{
AY8910_LEGACY_OUTPUT,
AY8910_DEFAULT_LOADS,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
/***************************************************************************
MACHINE INITIALIZATION
***************************************************************************/
/*-------------------------------------------------
MACHINE_START( cgc7900 )
-------------------------------------------------*/
void cgc7900_state::machine_start()
{
/* register for state saving */
save_pointer(NAME(m_overlay_ram.target()), 0x4000);
}
/*-------------------------------------------------
MACHINE_RESET( cgc7900 )
-------------------------------------------------*/
void cgc7900_state::machine_reset()
{
}
/***************************************************************************
MACHINE DRIVERS
***************************************************************************/
/*-------------------------------------------------
MACHINE_DRIVER( cgc7900 )
-------------------------------------------------*/
static MACHINE_CONFIG_START( cgc7900, cgc7900_state )
/* basic machine hardware */
MCFG_CPU_ADD(M68000_TAG, M68000, XTAL_28_48MHz/4)
MCFG_CPU_PROGRAM_MAP(cgc7900_mem)
MCFG_CPU_ADD(I8035_TAG, I8035, 1000000)
MCFG_CPU_PROGRAM_MAP(keyboard_mem)
MCFG_CPU_IO_MAP(keyboard_io)
MCFG_DEVICE_DISABLE()
/* MCFG_CPU_ADD(AM2910_TAG, AM2910, XTAL_17_36MHz)
MCFG_CPU_PROGRAM_MAP(omti10_mem)*/
/* video hardware */
MCFG_FRAGMENT_ADD(cgc7900_video)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD(AY8910_TAG, AY8910, XTAL_28_48MHz/16)
MCFG_SOUND_CONFIG(ay8910_intf)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
/* devices */
MCFG_I8251_ADD(INS8251_0_TAG, rs232_intf)
MCFG_I8251_ADD(INS8251_1_TAG, rs449_intf)
MACHINE_CONFIG_END
/***************************************************************************
ROMS
***************************************************************************/
ROM_START( cgc7900 )
ROM_REGION16_BE( 0x10000, M68000_TAG, 0 )
ROM_LOAD16_BYTE( "210274 800k even a3ee term 1.4.ue24", 0x0000, 0x1000, CRC(5fa8f368) SHA1(120dbcfedce0badd38bf5b23e1fbc99667eb286c) )
ROM_LOAD16_BYTE( "210275 800k odd bbb3 term 1.4.uf24", 0x0001, 0x1000, CRC(4d479457) SHA1(5fa96a1eadfd9ba493d28691286e2e001a489a19) )
ROM_LOAD16_BYTE( "210276 802k even 0c22 term 1.4.ue22", 0x2000, 0x1000, CRC(c88c44ec) SHA1(f39d8a3cf7aaefd815b4426348965b076c1f2265) )
ROM_LOAD16_BYTE( "210277 802k odd b58c term 1.4.uf22", 0x2001, 0x1000, CRC(52ffe01f) SHA1(683aa71c2eb17b7ad639b888487db73d7684901a) )
ROM_LOAD16_BYTE( "210278 804k even eaf4 term 1.4.ue21", 0x4000, 0x1000, CRC(7fe326db) SHA1(d39d05e008160fb8afa62e0d4cfb1d813f2296d4) )
ROM_LOAD16_BYTE( "210279 804k odd 3f6d term 1.4.uf21", 0x4001, 0x1000, CRC(6c12d81c) SHA1(efe7c20e567c02b9c5b66a2d18e035d5f5f56b28) )
ROM_LOAD16_BYTE( "210280 806k even 679d term 1.4.ue20", 0x6000, 0x1000, CRC(70930d74) SHA1(a5ab1c0bd8bd829408961107e01598cd71a97fec) )
ROM_LOAD16_BYTE( "210281 1.4 806k odd sum 611e.uf20", 0x6001, 0x1000, CRC(8080aa2a) SHA1(c018a23e6f2158e2d63723cade0a3ad737090921) )
ROM_LOAD16_BYTE( "su7700 210282 808k even opmod term 1.4 sum 2550.ue18", 0x8000, 0x1000, CRC(8f5834cd) SHA1(3cd03c82aa85c30cbc8e954f5a9fc4e9034f913b) )
ROM_LOAD16_BYTE( "su7700 210283 808k odd opmod term 1.4 sum faca.uf18", 0x8001, 0x1000, CRC(e593b133) SHA1(6c641df844706e0d990b5fd544e98594171080a1) )
ROM_LOAD16_BYTE( "210258 80ak even b2f6 mon 1.3.ue15", 0xa000, 0x1000, CRC(ec5a1250) SHA1(ffef73d35f172ac610b35bdf729d51eb6f9346ba) )
ROM_LOAD16_BYTE( "210259 80ak odd cd66 mon 1.3.uf15", 0xa001, 0x1000, CRC(61eb43c6) SHA1(baaae0b787798147da453aac1f815589ea4ed921) )
ROM_LOAD16_BYTE( "210244 80c even ce40 dos 1.6b.ue13", 0xc000, 0x1000, CRC(3b64e4cb) SHA1(71b28d160b101ea6165e602ff1c54272b7b30ece) )
ROM_LOAD16_BYTE( "210245 80c odd 1ac3 dos 1.6b.uf13", 0xc001, 0x1000, CRC(0b6539ca) SHA1(d49e6d3307e5d634a412fd80b59492f31e29f7e0) )
ROM_LOAD16_BYTE( "210290 idris even rel3 sum 0cce.ue12", 0xe000, 0x1000, CRC(07065772) SHA1(620ea5d55021e5c38efc010722ddbd852cd49e39) )
ROM_LOAD16_BYTE( "210291 idris odd rel3 sum 5d11.uf12", 0xe001, 0x1000, CRC(d81b30da) SHA1(228f9b4e39d430ce4aaa81ea63f4516a51e6d001) )
ROM_REGION( 0x800, "i8035", 0 )
ROM_LOAD( "keyboard controller i8035", 0x0000, 0x0800, NO_DUMP )
ROM_REGION( 0x800, "gfx1", 0 )
ROM_LOAD( "norm chrset 4b40.ua13", 0x0000, 0x0400, CRC(55eb7b87) SHA1(768cea80597e7396d9e26f8cd09e6b480a526fce) )
ROM_LOAD( "alt 46a7.ua14", 0x0400, 0x0400, CRC(be22b7e4) SHA1(83ef252c7fab33b4d3821a3049b89d044df35de8) )
ROM_REGION( 0x20, "proms", 0 )
ROM_LOAD( "rp0a.ub8", 0x0000, 0x0020, NO_DUMP )
ROM_LOAD( "rp1a.ub7", 0x0000, 0x0020, NO_DUMP )
ROM_LOAD( "rp2a.ub9", 0x0000, 0x0020, NO_DUMP )
ROM_LOAD( "ha-5.ub1", 0x0000, 0x0020, NO_DUMP )
ROM_LOAD( "03c0.ua16", 0x0000, 0x0020, NO_DUMP )
ROM_LOAD( "03c0.ua11", 0x0000, 0x0020, NO_DUMP )
/* OMTI Series 10 SCSI controller */
ROM_REGION( 0x1400, AM2910_TAG, 0 )
ROM_LOAD( "35 1.7b", 0x0000, 0x0400, NO_DUMP ) /* 82S137N */
ROM_LOAD( "35 2.7b", 0x0400, 0x0400, NO_DUMP ) /* 82S137N */
ROM_LOAD( "35 3.7b", 0x0800, 0x0400, NO_DUMP ) /* 82S137N */
ROM_LOAD( "35 4.7b", 0x0c00, 0x0400, NO_DUMP ) /* 82S137N */
ROM_LOAD( "35 5.7b", 0x1000, 0x0400, NO_DUMP ) /* 82S137N */
ROM_END
/***************************************************************************
SYSTEM DRIVERS
***************************************************************************/
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1980, cgc7900, 0, 0, cgc7900, cgc7900, driver_device, 0, "Chromatics", "CGC 7900", GAME_NOT_WORKING)
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