/***************************************************************************
Videa Gridlee hardware
driver by Aaron Giles
special thanks to Howard Delman, Roger Hector and Ed Rotberg for
allowing distribution of the Gridlee ROMs
Based on the Bally/Sente SAC system
Games supported:
* Gridlee
Known bugs:
* analog sound hardware is unemulated
****************************************************************************
Memory map
****************************************************************************
========================================================================
CPU #1
========================================================================
0000-007F R/W xxxxxxxx Sprite RAM (32 entries x 4 bytes)
R/W xxxxxxxx (0: image number)
R/W -------- (1: unused?)
R/W xxxxxxxx (2: Y position, offset by 17 pixels)
R/W xxxxxxxx (3: X position)
0080-07FF R/W xxxxxxxx Program RAM
0800-7FFF R/W xxxxxxxx Video RAM (256x240 pixels)
R/W xxxx---- (left pixel)
R/W ----xxxx (right pixel)
9000 W -------x Player 1 LED
9010 W -------x Player 2 LED
9020 W -------x Coin counter
9060 W -------x Unknown (written once at startup)
9070 W -------x Cocktail flip
9200 W --xxxxxx Palette base select
9380 W -------- Watchdog reset
9500 R ---xxxxx Trackball Y position
R ---x---- Sign of delta
R ----xxxx Cumulative magnitude
9501 R ---xxxxx Trackball X position
R ---x---- Sign of delta
R ----xxxx Cumulative magnitude
9502 R ------x- Fire button 2
R -------x Fire button 1
9503 R --xx---- Coinage switches
R ----x--- 2 player start
R -----x-- 1 player start
R ------x- Right coin
R -------x Left coin
9600 R x------- Reset game data switch
R -x------ Reset hall of fame switch
R --x----- Cocktail/upright switch
R ---x---- Free play switch
R ----xx-- Lives switches
R ------xx Bonus lives switches
9700 R x------- VBLANK
R -x------ Service advance
R --x----- Service switch
9820 R xxxxxxxx Random number generator
9828-982C W ???????? Unknown
9830-983F W ???????? Unknown (sound-related)
9C00-9CFF R/W -------- NVRAM
A000-FFFF R xxxxxxxx Fixed program ROM
========================================================================
Interrupts:
NMI not connected
IRQ generated by 32L
FIRQ generated by ??? (but should be around scanline 92)
========================================================================
***************************************************************************/
#include "driver.h"
#include "cpu/m6809/m6809.h"
#include "gridlee.h"
#include "balsente.h"
#include "sound/custom.h"
#include "sound/samples.h"
/* constants */
#define FIRQ_SCANLINE 92
/* local variables */
static UINT8 last_analog_input[2];
static UINT8 last_analog_output[2];
/* random number generator states */
static UINT8 *poly17 = NULL;
static UINT8 *rand17 = NULL;
/* local prototypes */
static void poly17_init(void);
/*************************************
*
* Interrupt handling
*
*************************************/
static TIMER_CALLBACK( irq_off )
{
cpunum_set_input_line(0, M6809_IRQ_LINE, CLEAR_LINE);
}
static TIMER_CALLBACK( irq_timer )
{
/* next interrupt after scanline 256 is scanline 64 */
if (param == 256)
timer_set(video_screen_get_time_until_pos(0, 64, 0), 64, irq_timer);
else
timer_set(video_screen_get_time_until_pos(0, param + 64, 0), param + 64, irq_timer);
/* IRQ starts on scanline 0, 64, 128, etc. */
cpunum_set_input_line(0, M6809_IRQ_LINE, ASSERT_LINE);
/* it will turn off on the next HBLANK */
timer_set(video_screen_get_time_until_pos(0, param, BALSENTE_HBSTART), 0, irq_off);
}
static TIMER_CALLBACK( firq_off )
{
cpunum_set_input_line(0, M6809_FIRQ_LINE, CLEAR_LINE);
}
static TIMER_CALLBACK( firq_timer )
{
/* same time next frame */
timer_set(video_screen_get_time_until_pos(0, FIRQ_SCANLINE, 0), 0, firq_timer);
/* IRQ starts on scanline FIRQ_SCANLINE? */
cpunum_set_input_line(0, M6809_FIRQ_LINE, ASSERT_LINE);
/* it will turn off on the next HBLANK */
timer_set(video_screen_get_time_until_pos(0, FIRQ_SCANLINE, BALSENTE_HBSTART), 0, firq_off);
}
static MACHINE_RESET( gridlee )
{
/* start timers to generate interrupts */
timer_set(video_screen_get_time_until_pos(0, 0, 0), 0, irq_timer);
timer_set(video_screen_get_time_until_pos(0, FIRQ_SCANLINE, 0), 0, firq_timer);
/* create the polynomial tables */
poly17_init();
}
/*************************************
*
* ADC handlers
*
*************************************/
static READ8_HANDLER( analog_port_r )
{
int delta, sign, magnitude;
UINT8 newval;
/* first read the new trackball value and compute the signed delta */
newval = readinputport(offset + 2 * gridlee_cocktail_flip);
delta = (int)newval - (int)last_analog_input[offset];
/* handle the case where we wrap around from 0x00 to 0xff, or vice versa */
if (delta >= 0x80)
delta -= 0x100;
if (delta <= -0x80)
delta += 0x100;
/* just return the previous value for deltas less than 2, which are ignored */
if (delta >= -1 && delta <= 1)
return last_analog_output[offset];
last_analog_input[offset] = newval;
/* compute the sign and the magnitude */
sign = (delta < 0) ? 0x10 : 0x00;
magnitude = (delta < 0) ? -delta : delta;
/* add the magnitude to the running total */
last_analog_output[offset] += magnitude;
/* or in the sign bit and return that */
return (last_analog_output[offset] & 15) | sign;
}
/*************************************
*
* MM5837 noise generator
*
* NOTE: this is stolen straight from
* POKEY.c
*
* NOTE: this is assumed to be the
* same as balsente.c
*
*************************************/
#define POLY17_BITS 17
#define POLY17_SIZE ((1 << POLY17_BITS) - 1)
#define POLY17_SHL 7
#define POLY17_SHR 10
#define POLY17_ADD 0x18000
static void poly17_init(void)
{
UINT32 i, x = 0;
UINT8 *p, *r;
/* allocate memory */
p = poly17 = auto_malloc(2 * (POLY17_SIZE + 1));
r = rand17 = poly17 + POLY17_SIZE + 1;
/* generate the polynomial */
for (i = 0; i < POLY17_SIZE; i++)
{
/* store new values */
*p++ = x & 1;
*r++ = x >> 3;
/* calculate next bit */
x = ((x << POLY17_SHL) + (x >> POLY17_SHR) + POLY17_ADD) & POLY17_SIZE;
}
}
/*************************************
*
* Hardware random numbers
*
*************************************/
static READ8_HANDLER( random_num_r )
{
UINT32 cc;
/* CPU runs at 1.25MHz, noise source at 100kHz --> multiply by 12.5 */
cc = activecpu_gettotalcycles();
/* 12.5 = 8 + 4 + 0.5 */
cc = (cc << 3) + (cc << 2) + (cc >> 1);
return rand17[cc & POLY17_SIZE];
}
/*************************************
*
* Misc handlers
*
*************************************/
static WRITE8_HANDLER( led_0_w )
{
set_led_status(0, data & 1);
logerror("LED 0 %s\n", (data & 1) ? "on" : "off");
}
static WRITE8_HANDLER( led_1_w )
{
set_led_status(1, data & 1);
logerror("LED 1 %s\n", (data & 1) ? "on" : "off");
}
static WRITE8_HANDLER( gridlee_coin_counter_w )
{
coin_counter_w(0, data & 1);
logerror("coin counter %s\n", (data & 1) ? "on" : "off");
}
/*************************************
*
* Main CPU memory handlers
*
*************************************/
/* CPU 1 read addresses */
static ADDRESS_MAP_START( readmem_cpu1, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_RAM)
AM_RANGE(0x9500, 0x9501) AM_READ(analog_port_r)
AM_RANGE(0x9502, 0x9502) AM_READ(input_port_4_r)
AM_RANGE(0x9503, 0x9503) AM_READ(input_port_5_r)
AM_RANGE(0x9600, 0x9600) AM_READ(input_port_6_r)
AM_RANGE(0x9700, 0x9700) AM_READ(input_port_7_r)
AM_RANGE(0x9820, 0x9820) AM_READ(random_num_r)
AM_RANGE(0x9c00, 0x9cff) AM_READ(MRA8_RAM)
AM_RANGE(0xa000, 0xffff) AM_READ(MRA8_ROM)
ADDRESS_MAP_END
static ADDRESS_MAP_START( writemem_cpu1, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x07ff) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram)
AM_RANGE(0x0800, 0x7fff) AM_WRITE(gridlee_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size)
AM_RANGE(0x9000, 0x9000) AM_WRITE(led_0_w)
AM_RANGE(0x9010, 0x9010) AM_WRITE(led_1_w)
AM_RANGE(0x9020, 0x9020) AM_WRITE(gridlee_coin_counter_w)
/* { 0x9060, 0x9060, unknown - only written to at startup */
AM_RANGE(0x9070, 0x9070) AM_WRITE(gridlee_cocktail_flip_w)
AM_RANGE(0x9200, 0x9200) AM_WRITE(gridlee_palette_select_w)
AM_RANGE(0x9380, 0x9380) AM_WRITE(watchdog_reset_w)
AM_RANGE(0x9700, 0x9700) AM_WRITE(MWA8_NOP)
AM_RANGE(0x9828, 0x993f) AM_WRITE(gridlee_sound_w)
AM_RANGE(0x9c00, 0x9cff) AM_WRITE(MWA8_RAM) AM_BASE(&generic_nvram) AM_SIZE(&generic_nvram_size)
AM_RANGE(0xa000, 0xffff) AM_WRITE(MWA8_ROM)
ADDRESS_MAP_END
/*************************************
*
* Port definitions
*
*************************************/
static INPUT_PORTS_START( gridlee )
PORT_START /* 9500 (fake) */
PORT_BIT( 0xff, 0, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8)
PORT_START /* 9501 (fake) */
PORT_BIT( 0xff, 0, IPT_TRACKBALL_X ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_REVERSE
PORT_START /* 9500 (fake) */
PORT_BIT( 0xff, 0, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_COCKTAIL
PORT_START /* 9501 (fake) */
PORT_BIT( 0xff, 0, IPT_TRACKBALL_X ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_REVERSE PORT_COCKTAIL
PORT_START /* 9502 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* 9503 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )
PORT_DIPNAME( 0x30, 0x00, DEF_STR( Coinage ))
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ))
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ))
PORT_DIPSETTING( 0x10, DEF_STR( 1C_2C ))
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* 9600 */
PORT_DIPNAME( 0x03, 0x01, DEF_STR( Bonus_Life ))
PORT_DIPSETTING( 0x00, "8000 points" )
PORT_DIPSETTING( 0x01, "10000 points" )
PORT_DIPSETTING( 0x02, "12000 points" )
PORT_DIPSETTING( 0x03, "14000 points" )
PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Lives ))
PORT_DIPSETTING( 0x00, "2" )
PORT_DIPSETTING( 0x04, "3" )
PORT_DIPSETTING( 0x08, "4" )
PORT_DIPSETTING( 0x0c, "5" )
PORT_DIPNAME( 0x10, 0x00, DEF_STR( Free_Play ))
PORT_DIPSETTING( 0x00, DEF_STR( Off ))
PORT_DIPSETTING( 0x10, DEF_STR( On ))
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x20, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x40, 0x00, "Reset Hall of Fame" )
PORT_DIPSETTING( 0x00, DEF_STR( No ))
PORT_DIPSETTING( 0x40, DEF_STR( Yes ))
PORT_DIPNAME( 0x80, 0x00, "Reset Game Data" )
PORT_DIPSETTING( 0x00, DEF_STR( No ))
PORT_DIPSETTING( 0x80, DEF_STR( Yes ))
PORT_START /* 9700 */
PORT_BIT( 0x1f, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_SERVICE( 0x20, IP_ACTIVE_LOW )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE1 )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK )
INPUT_PORTS_END
/*************************************
*
* Sound definitions
*
*************************************/
static struct CustomSound_interface custom_interface =
{
gridlee_sh_start
};
static const char *sample_names[] =
{
"*gridlee",
"bounce1.wav",
"bounce2.wav",
0 /* end of array */
};
static struct Samplesinterface samples_interface =
{
8, /* 8 channels */
sample_names
};
/*************************************
*
* Machine driver
*
*************************************/
static MACHINE_DRIVER_START( gridlee )
/* basic machine hardware */
MDRV_CPU_ADD(M6809, BALSENTE_CPU_CLOCK)
MDRV_CPU_PROGRAM_MAP(readmem_cpu1,writemem_cpu1)
MDRV_MACHINE_RESET(gridlee)
MDRV_NVRAM_HANDLER(generic_0fill)
/* video hardware */
MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_RAW_PARAMS(BALSENTE_PIXEL_CLOCK, BALSENTE_HTOTAL, BALSENTE_HBEND, BALSENTE_HBSTART, BALSENTE_VTOTAL, BALSENTE_VBEND, BALSENTE_VBSTART)
MDRV_PALETTE_LENGTH(2048)
MDRV_PALETTE_INIT(gridlee)
MDRV_VIDEO_START(gridlee)
MDRV_VIDEO_UPDATE(gridlee)
/* sound hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD(CUSTOM, 0)
MDRV_SOUND_CONFIG(custom_interface)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MDRV_SOUND_ADD(SAMPLES, 0)
MDRV_SOUND_CONFIG(samples_interface)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40)
MACHINE_DRIVER_END
/*************************************
*
* ROM definitions
*
*************************************/
ROM_START( gridlee )
ROM_REGION( 0x10000, REGION_CPU1, 0 )
ROM_LOAD( "gridfnla.bin", 0xa000, 0x1000, CRC(1c43539e) SHA1(8b4a6f5c2c22bb021937157606d2129e2b01f718) )
ROM_LOAD( "gridfnlb.bin", 0xb000, 0x1000, CRC(c48b91b8) SHA1(651210470ddf7c14f16f6c3046a9b8e903824ab8) )
ROM_LOAD( "gridfnlc.bin", 0xc000, 0x1000, CRC(6ad436dd) SHA1(f393b63077f249d34a8e85649aea58b27a0425b1) )
ROM_LOAD( "gridfnld.bin", 0xd000, 0x1000, CRC(f7188ddb) SHA1(eeb3f7dd8c61689cdd9992280ee1b3b5dc79a54c) )
ROM_LOAD( "gridfnle.bin", 0xe000, 0x1000, CRC(d5330bee) SHA1(802bb5705d4cd22d556c1bcbcf730d688ca8e8ab) )
ROM_LOAD( "gridfnlf.bin", 0xf000, 0x1000, CRC(695d16a3) SHA1(53d22cbedbedad8c89a964b6a38b7075c43cf03b) )
ROM_REGION( 0x4000, REGION_GFX1, 0 )
ROM_LOAD( "gridpix0.bin", 0x0000, 0x1000, CRC(e6ea15ae) SHA1(2c482e25ea44aafd63ca5533b5a2e2dd8bf89365) )
ROM_LOAD( "gridpix1.bin", 0x1000, 0x1000, CRC(d722f459) SHA1(8cad028eefbba387bdd57fb8bb3a855ae314fb32) )
ROM_LOAD( "gridpix2.bin", 0x2000, 0x1000, CRC(1e99143c) SHA1(89c2f772cd15f2c37c8167a03dc4c7d1c923e4c3) )
ROM_LOAD( "gridpix3.bin", 0x3000, 0x1000, CRC(274342a0) SHA1(818cfd4132183d922ff4585c73f2cd6e4546c75b) )
ROM_REGION( 0x1800, REGION_PROMS, 0 )
ROM_LOAD( "grdrprom.bin", 0x0000, 0x800, CRC(f28f87ed) SHA1(736f38c3ec5455de1266aad348ba708d7201b21a) )
ROM_LOAD( "grdgprom.bin", 0x0800, 0x800, CRC(921b0328) SHA1(59d1a3d3a90bd680a75adca5dd1b4682236c673b) )
ROM_LOAD( "grdbprom.bin", 0x1000, 0x800, CRC(04350348) SHA1(098fec3073143e0b8746e728d7d321f2a353286f) )
ROM_END
/*************************************
*
* Game drivers
*
*************************************/
GAME( 1983, gridlee, 0, gridlee, gridlee, 0, ROT0, "Videa", "Gridlee", GAME_IMPERFECT_SOUND )