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Did the following changes to the tankbatt.c driver [Angelo Salese]:

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* Cleaned-up the irq / nmi firing and fixed irq acks;
* Cleaned-up the memory map;
* Added coin counter, coin lockouts and added a second coin chute;
* Documented some unclear i/os;
* Flagged the game as GAME_IMPERFECT_SOUND since it uses samples instead of proper discrete sound emulation;
This commit is contained in:
Angelo Salese 2009-07-22 20:36:29 +00:00
parent 48e1c2ac35
commit ce03bc23a2
1 changed files with 49 additions and 31 deletions
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80
src/mame/drivers/tankbatt.c
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@ -40,6 +40,7 @@ Write:
$2000-$3fff : ROM
TODO:
. Needs proper discrete emulation
. Resistor values on the color prom need to be verified
Changes:
@ -104,11 +105,7 @@ static WRITE8_HANDLER( tankbatt_interrupt_enable_w )
{
tankbatt_nmi_enable = !data;
tankbatt_sound_enable = !data;
if (data != 0)
{
cputag_set_input_line(space->machine, "maincpu", 0, CLEAR_LINE);
cputag_set_input_line(space->machine, "maincpu", INPUT_LINE_NMI, CLEAR_LINE);
}
/* hack - turn off the engine noise if the normal game nmi's are disabled */
if (data) sample_stop (devtag_get_device(space->machine, "samples"), 2);
// interrupt_enable_w (offset, !data);
@ -117,11 +114,6 @@ static WRITE8_HANDLER( tankbatt_interrupt_enable_w )
static WRITE8_HANDLER( tankbatt_demo_interrupt_enable_w )
{
tankbatt_nmi_enable = data;
if (data != 0)
{
cputag_set_input_line(space->machine, "maincpu", 0, CLEAR_LINE);
cputag_set_input_line(space->machine, "maincpu", INPUT_LINE_NMI, CLEAR_LINE);
}
// interrupt_enable_w (offset, data);
}
@ -156,32 +148,57 @@ static WRITE8_HANDLER( tankbatt_sh_fire_w )
}
}
static WRITE8_HANDLER( tankbatt_irq_ack_w )
{
/* 0x6e written at the end of the irq routine, could be either irq ack or a coin sample */
cputag_set_input_line(space->machine, "maincpu", 0, CLEAR_LINE);
}
static WRITE8_HANDLER( tankbatt_coin_counter_w )
{
coin_counter_w(0,data & 1);
coin_counter_w(1,data & 1);
}
static WRITE8_HANDLER( tankbatt_coin_lockout_w )
{
coin_lockout_w(0,data & 1);
coin_lockout_w(1,data & 1);
}
static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x01ff) AM_READ(SMH_RAM)
AM_RANGE(0x0000, 0x000f) AM_WRITE(SMH_RAM) AM_BASE(&tankbatt_bulletsram) AM_SIZE(&tankbatt_bulletsram_size)
AM_RANGE(0x0010, 0x01ff) AM_WRITE(SMH_RAM)
AM_RANGE(0x0800, 0x0bff) AM_WRITE(tankbatt_videoram_w) AM_BASE(&videoram)
AM_RANGE(0x0000, 0x000f) AM_RAM AM_BASE(&tankbatt_bulletsram) AM_SIZE(&tankbatt_bulletsram_size)
AM_RANGE(0x0010, 0x01ff) AM_RAM
AM_RANGE(0x0200, 0x07ff) AM_RAM
AM_RANGE(0x0800, 0x0bff) AM_RAM_WRITE(tankbatt_videoram_w) AM_BASE(&videoram)
AM_RANGE(0x0c00, 0x0c07) AM_READ(tankbatt_in0_r)
AM_RANGE(0x0c00, 0x0c01) AM_WRITE(tankbatt_led_w)
AM_RANGE(0x0c02, 0x0c02) AM_WRITE(tankbatt_coin_counter_w)
AM_RANGE(0x0c03, 0x0c03) AM_WRITE(tankbatt_coin_lockout_w)
AM_RANGE(0x0c08, 0x0c0f) AM_READ(tankbatt_in1_r)
AM_RANGE(0x0c08, 0x0c08) AM_WRITENOP //coin counter mirror?
AM_RANGE(0x0c0a, 0x0c0a) AM_WRITE(tankbatt_interrupt_enable_w)
AM_RANGE(0x0c0b, 0x0c0b) AM_WRITE(tankbatt_sh_engine_w)
AM_RANGE(0x0c0c, 0x0c0c) AM_WRITE(tankbatt_sh_fire_w)
AM_RANGE(0x0c0d, 0x0c0d) AM_WRITE(tankbatt_sh_expl_w)
AM_RANGE(0x0c0d, 0x0c0d) AM_WRITE(tankbatt_sh_expl_w) // bit 7 == led for the start 2 button
AM_RANGE(0x0c0e, 0x0c0e) AM_WRITENOP //bit 7 == led for the start 1 button
AM_RANGE(0x0c0f, 0x0c0f) AM_WRITE(tankbatt_demo_interrupt_enable_w)
AM_RANGE(0x0c10, 0x0c10) AM_WRITE(tankbatt_irq_ack_w)
AM_RANGE(0x0c18, 0x0c1f) AM_READ(tankbatt_dsw_r)
AM_RANGE(0x0c18, 0x0c18) AM_WRITENOP /* watchdog ?? */
AM_RANGE(0x0200, 0x0bff) AM_READ(SMH_RAM)
AM_RANGE(0x0200, 0x07ff) AM_WRITE(SMH_RAM)
AM_RANGE(0x2000, 0x3fff) AM_WRITE(SMH_ROM)
AM_RANGE(0x6000, 0x7fff) AM_READ(SMH_ROM)
AM_RANGE(0xf800, 0xffff) AM_READ(SMH_ROM) /* for the reset / interrupt vectors */
AM_RANGE(0x6000, 0x7fff) AM_ROM AM_REGION("maincpu",0)
AM_RANGE(0xe000, 0xffff) AM_ROM AM_REGION("maincpu",0) //mirror for the reset/irq vectors
AM_RANGE(0x2000, 0xffff) AM_READNOP //anything else might be left-over for a diagnostic ROM or something related to the discrete sound HW
ADDRESS_MAP_END
static INTERRUPT_GEN( tankbatt_interrupt )
{
if ((input_port_read(device->machine, "P1") & 0x60) == 0) cpu_set_input_line(device,0,HOLD_LINE);
else if (tankbatt_nmi_enable) cpu_set_input_line(device,INPUT_LINE_NMI,PULSE_LINE);
if (tankbatt_nmi_enable) cpu_set_input_line(device,INPUT_LINE_NMI,PULSE_LINE);
}
static INPUT_CHANGED( coin_inserted )
{
cputag_set_input_line(field->port->machine, "maincpu", 0, ASSERT_LINE);
}
static INPUT_PORTS_START( tankbatt )
@ -191,7 +208,8 @@ static INPUT_PORTS_START( tankbatt )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x60, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(2)
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_CHANGED(coin_inserted, 0)
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_TILT )
PORT_START("P2") /* IN1 */
@ -318,20 +336,20 @@ MACHINE_DRIVER_END
***************************************************************************/
ROM_START( tankbatt )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "tb1-1.1a", 0x6000, 0x0800, CRC(278a0b8c) SHA1(11ea8fe8401b3cd986616a30a759c0ac1a5ce73b) )
ROM_LOAD( "tb1-2.1b", 0x6800, 0x0800, CRC(e0923370) SHA1(8d3dbea877bed9f9c267d8002dc180f6eb1e5a8f) )
ROM_LOAD( "tb1-3.1c", 0x7000, 0x0800, CRC(85005ea4) SHA1(91583081803a5ef600fb90bee34be9edd87f157e) )
ROM_LOAD( "tb1-4.1d", 0x7800, 0x0800, CRC(3dfb5bcf) SHA1(aa24bf74f4d5dc81baf3843196c837e0b731077b) )
ROM_RELOAD( 0xf800, 0x0800 ) /* for the reset and interrupt vectors */
ROM_REGION( 0x2000, "maincpu", 0 )
ROM_LOAD( "tb1-1.1a", 0x0000, 0x0800, CRC(278a0b8c) SHA1(11ea8fe8401b3cd986616a30a759c0ac1a5ce73b) )
ROM_LOAD( "tb1-2.1b", 0x0800, 0x0800, CRC(e0923370) SHA1(8d3dbea877bed9f9c267d8002dc180f6eb1e5a8f) )
ROM_LOAD( "tb1-3.1c", 0x1000, 0x0800, CRC(85005ea4) SHA1(91583081803a5ef600fb90bee34be9edd87f157e) )
ROM_LOAD( "tb1-4.1d", 0x1800, 0x0800, CRC(3dfb5bcf) SHA1(aa24bf74f4d5dc81baf3843196c837e0b731077b) )
ROM_REGION( 0x0800, "gfx1", 0 )
ROM_LOAD( "tb1-5.2k", 0x0000, 0x0800, CRC(aabd4fb1) SHA1(5cff659b531d0f1b6faa503f7c06045c3a209a84) )
ROM_REGION( 0x0100, "proms", 0 )
ROM_REGION( 0x0200, "proms", 0 )
ROM_LOAD( "bct1-1.l3", 0x0000, 0x0100, CRC(d17518bc) SHA1(f3b0deffa586808bc59e9a24ec1699c54ebe84cc) ) /* prom is a Fujitsu MB7052 or equivalent */
ROM_LOAD( "prom.2d", 0x0100, 0x0100, NO_DUMP )
ROM_END
GAME( 1980, tankbatt, 0, tankbatt, tankbatt, 0, ROT90, "Namco", "Tank Battalion", 0 )
GAME( 1980, tankbatt, 0, tankbatt, tankbatt, 0, ROT90, "Namco", "Tank Battalion", GAME_IMPERFECT_SOUND )