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03916: arabian: Missing bird at top of the screen. [Phil Bennett]

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Hooked up Arabian MB8841 MCU and removed obsolete simulation code [Phil Bennett]
This commit is contained in:
Phil Bennett 2010-12-24 11:16:56 +00:00
parent 5f75b3dcf8
commit fd1a3c34ba
2 changed files with 13 additions and 154 deletions
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162
src/mame/drivers/arabian.c
View File

@ -8,8 +8,7 @@
* Arabian [2 sets] * Arabian [2 sets]
Known bugs: Known bugs:
* The large blue bird is missing (see MT 03916). * none at this time
* The game doesn't work properly when the MCU is emulated. Bad ROM?
**************************************************************************** ****************************************************************************
@ -41,30 +40,6 @@
IRQ generated by VBLANK IRQ generated by VBLANK
======================================================================== ========================================================================
========================================================================
CPU #1 (Kangaroo)
========================================================================
0000-7FFF R xxxxxxxx Program ROM
8000-BFFF R/W xxxxxxxx Bitmap RAM
C000 R ----xxxx Coin inputs
C200 R ----xxxx Option switches
D000-DFFF R/W xxxxxxxx Custom microprocessor RAM
E000 W ----xxxx BSEL Bank select
E001 W xxxxxxxx DMA ROM start address low
E002 W xxxxxxxx DMA ROM start address high
E003 W xxxxxxxx DMA RAM start address low
E004 W xxxxxxxx DMA RAM start address high
E005 W xxxxxxxx Picture size/DMA start low
E006 W xxxxxxxx Picture size/DMA start high
========================================================================
C800 W xxxxxxxx Sound chip address
CA00 R/W xxxxxxxx Sound chip data
========================================================================
Interrupts:
NMI not connected
IRQ generated by VBLANK
========================================================================
***************************************************************************/ ***************************************************************************/
#include "emu.h" #include "emu.h"
@ -75,7 +50,6 @@
/* constants */ /* constants */
#define MAIN_OSC XTAL_12MHz #define MAIN_OSC XTAL_12MHz
#define SIMULATE_MCU 1
/************************************* /*************************************
@ -101,8 +75,6 @@ static WRITE8_DEVICE_HANDLER( ay8910_porta_w )
static WRITE8_DEVICE_HANDLER( ay8910_portb_w ) static WRITE8_DEVICE_HANDLER( ay8910_portb_w )
{ {
arabian_state *state = device->machine->driver_data<arabian_state>();
/* /*
bit 5 = /IREQ to custom CPU bit 5 = /IREQ to custom CPU
bit 4 = /SRES to custom CPU bit 4 = /SRES to custom CPU
@ -110,13 +82,8 @@ static WRITE8_DEVICE_HANDLER( ay8910_portb_w )
bit 0 = coin 1 counter bit 0 = coin 1 counter
*/ */
/* track the custom CPU reset */
state->custom_cpu_reset = ~data & 0x10;
#if !SIMULATE_MCU
cputag_set_input_line(device->machine, "mcu", MB88_IRQ_LINE, data & 0x20 ? CLEAR_LINE : ASSERT_LINE); cputag_set_input_line(device->machine, "mcu", MB88_IRQ_LINE, data & 0x20 ? CLEAR_LINE : ASSERT_LINE);
cputag_set_input_line(device->machine, "mcu", INPUT_LINE_RESET, data & 0x10 ? CLEAR_LINE : ASSERT_LINE); cputag_set_input_line(device->machine, "mcu", INPUT_LINE_RESET, data & 0x10 ? CLEAR_LINE : ASSERT_LINE);
#endif
/* clock the coin counters */ /* clock the coin counters */
coin_counter_w(device->machine, 1, ~data & 0x02); coin_counter_w(device->machine, 1, ~data & 0x02);
@ -127,101 +94,10 @@ static WRITE8_DEVICE_HANDLER( ay8910_portb_w )
/************************************* /*************************************
* *
* Custom CPU RAM snooping * Custom CPU (MB8841 MCU)
* *
*************************************/ *************************************/
#if SIMULATE_MCU
static READ8_HANDLER( custom_cpu_r )
{
arabian_state *state = space->machine->driver_data<arabian_state>();
/* since we don't have a simulator for the Fujitsu 8841 4-bit microprocessor */
/* we have to simulate its behavior; it looks like Arabian reads out of the */
/* alternate CPU's RAM space while the CPU is running. If the CPU is not */
/* running (i.e., the /SRES line is low), it needs to look like RAM to pass */
/* the self-tests */
static const char *const comnames[] = { "COM0", "COM1", "COM2", "COM3", "COM4", "COM5" };
/* if the CPU reset line is being held down, just return RAM */
if (state->custom_cpu_reset)
return state->custom_cpu_ram[0x7f0 + offset];
/* otherwise, assume the custom CPU is live */
switch (offset)
{
/* 4-bit input ports from the custom */
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
return input_port_read(space->machine, comnames[offset]);
/* busy flag; this is polled to check the custom CPU's readiness */
/* we just toggle it on and off until the main CPU gets the result */
/* it wants. There appears to be a number of different ways to make */
/* the custom turn this on. */
case 6:
return state->custom_cpu_busy ^= 1;
/* handshake read; the main CPU writes to the previous memory location */
/* and waits for the custom to copy that value here */
case 8:
return state->custom_cpu_ram[0x7f0 + offset - 1];
/* error cases */
default:
logerror("Input Port %04X read. PC = %04X\n", offset + 0xd7f0, cpu_get_pc(space->cpu));
}
return 0;
}
static WRITE8_HANDLER( custom_cpu_w )
{
arabian_state *state = space->machine->driver_data<arabian_state>();
state->custom_cpu_ram[0x7f0 + offset] = data;
}
static void update_flip_state( running_machine *machine )
{
arabian_state *state = machine->driver_data<arabian_state>();
/* the custom CPU also controls the video flip control line; unfortunately, */
/* it appears that the custom is smart enough to flip the screen itself, based */
/* on the information stored at $d400 and $d401. The value at $d400 specifies */
/* the active player number, and the value at $d401 is a copy of the input */
/* port from $c200. Also, the value at $d34b controls the global flip screen */
/* state. */
/* initial state is based on the flip screen flag */
state->flip_screen = state->custom_cpu_ram[0x34b];
/* flip if not player 1 and cocktail mode */
if (state->custom_cpu_ram[0x400] != 0 && !(state->custom_cpu_ram[0x401] & 0x02))
state->flip_screen = !state->flip_screen;
}
static WRITE8_HANDLER( custom_flip_w )
{
arabian_state *state = space->machine->driver_data<arabian_state>();
state->custom_cpu_ram[0x34b + offset] = data;
update_flip_state(space->machine);
}
static WRITE8_HANDLER( custom_cocktail_w )
{
arabian_state *state = space->machine->driver_data<arabian_state>();
state->custom_cpu_ram[0x400 + offset] = data;
update_flip_state(space->machine);
}
#else
static READ8_HANDLER( mcu_port_r_r ) static READ8_HANDLER( mcu_port_r_r )
{ {
arabian_state *state = space->machine->driver_data<arabian_state>(); arabian_state *state = space->machine->driver_data<arabian_state>();
@ -297,7 +173,7 @@ static WRITE8_HANDLER( mcu_port_p_w )
arabian_state *state = space->machine->driver_data<arabian_state>(); arabian_state *state = space->machine->driver_data<arabian_state>();
state->mcu_port_p = data & 0x0f; state->mcu_port_p = data & 0x0f;
} }
#endif
/************************************* /*************************************
@ -311,12 +187,7 @@ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x8000, 0xbfff) AM_WRITE(arabian_videoram_w) AM_RANGE(0x8000, 0xbfff) AM_WRITE(arabian_videoram_w)
AM_RANGE(0xc000, 0xc000) AM_MIRROR(0x01ff) AM_READ_PORT("IN0") AM_RANGE(0xc000, 0xc000) AM_MIRROR(0x01ff) AM_READ_PORT("IN0")
AM_RANGE(0xc200, 0xc200) AM_MIRROR(0x01ff) AM_READ_PORT("DSW1") AM_RANGE(0xc200, 0xc200) AM_MIRROR(0x01ff) AM_READ_PORT("DSW1")
#if SIMULATE_MCU
AM_RANGE(0xd000, 0xd7ef) AM_RAM AM_BASE_MEMBER(arabian_state, custom_cpu_ram)
AM_RANGE(0xd7f0, 0xd7ff) AM_READWRITE(custom_cpu_r, custom_cpu_w)
#else
AM_RANGE(0xd000, 0xd7ff) AM_MIRROR(0x0800) AM_RAM AM_BASE_MEMBER(arabian_state, custom_cpu_ram) AM_RANGE(0xd000, 0xd7ff) AM_MIRROR(0x0800) AM_RAM AM_BASE_MEMBER(arabian_state, custom_cpu_ram)
#endif
AM_RANGE(0xe000, 0xe007) AM_MIRROR(0x0ff8) AM_WRITE(arabian_blitter_w) AM_BASE_MEMBER(arabian_state, blitter) AM_RANGE(0xe000, 0xe007) AM_MIRROR(0x0ff8) AM_WRITE(arabian_blitter_w) AM_BASE_MEMBER(arabian_state, blitter)
ADDRESS_MAP_END ADDRESS_MAP_END
@ -340,14 +211,14 @@ ADDRESS_MAP_END
* MCU port handlers * MCU port handlers
* *
*************************************/ *************************************/
#if !SIMULATE_MCU
static ADDRESS_MAP_START( mcu_io_map, ADDRESS_SPACE_IO, 8 ) static ADDRESS_MAP_START( mcu_io_map, ADDRESS_SPACE_IO, 8 )
AM_RANGE(MB88_PORTK, MB88_PORTK ) AM_READ(mcu_portk_r) AM_RANGE(MB88_PORTK, MB88_PORTK ) AM_READ(mcu_portk_r)
AM_RANGE(MB88_PORTO, MB88_PORTO ) AM_WRITE(mcu_port_o_w) AM_RANGE(MB88_PORTO, MB88_PORTO ) AM_WRITE(mcu_port_o_w)
AM_RANGE(MB88_PORTP, MB88_PORTP ) AM_WRITE(mcu_port_p_w) AM_RANGE(MB88_PORTP, MB88_PORTP ) AM_WRITE(mcu_port_p_w)
AM_RANGE(MB88_PORTR0, MB88_PORTR3) AM_READWRITE(mcu_port_r_r, mcu_port_r_w) AM_RANGE(MB88_PORTR0, MB88_PORTR3) AM_READWRITE(mcu_port_r_r, mcu_port_r_w)
ADDRESS_MAP_END ADDRESS_MAP_END
#endif
/************************************* /*************************************
@ -479,18 +350,16 @@ static MACHINE_START( arabian )
{ {
arabian_state *state = machine->driver_data<arabian_state>(); arabian_state *state = machine->driver_data<arabian_state>();
state_save_register_global(machine, state->custom_cpu_reset); state_save_register_global(machine, state->mcu_port_o);
state_save_register_global(machine, state->custom_cpu_busy); state_save_register_global(machine, state->mcu_port_p);
state_save_register_global_array(machine, state->mcu_port_r);
} }
static MACHINE_RESET( arabian ) static MACHINE_RESET( arabian )
{ {
arabian_state *state = machine->driver_data<arabian_state>(); arabian_state *state = machine->driver_data<arabian_state>();
state->custom_cpu_reset = 0;
state->custom_cpu_busy = 0;
state->video_control = 0; state->video_control = 0;
state->flip_screen = 0;
} }
static MACHINE_CONFIG_START( arabian, arabian_state ) static MACHINE_CONFIG_START( arabian, arabian_state )
@ -501,10 +370,8 @@ static MACHINE_CONFIG_START( arabian, arabian_state )
MDRV_CPU_IO_MAP(main_io_map) MDRV_CPU_IO_MAP(main_io_map)
MDRV_CPU_VBLANK_INT("screen", irq0_line_hold) MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
#if !SIMULATE_MCU MDRV_CPU_ADD("mcu", MB8841, MAIN_OSC/3/2)
MDRV_CPU_ADD("mcu", MB8841, MAIN_OSC/3/2) MDRV_CPU_IO_MAP(mcu_io_map)
MDRV_CPU_IO_MAP(mcu_io_map)
#endif
MDRV_MACHINE_START(arabian) MDRV_MACHINE_START(arabian)
MDRV_MACHINE_RESET(arabian) MDRV_MACHINE_RESET(arabian)
@ -552,7 +419,7 @@ ROM_START( arabian )
ROM_LOAD( "tvg-94.ic87", 0x6000, 0x2000, CRC(82160b9a) SHA1(03511f6ebcf22ba709a80a565e71acf5bdecbabb) ) ROM_LOAD( "tvg-94.ic87", 0x6000, 0x2000, CRC(82160b9a) SHA1(03511f6ebcf22ba709a80a565e71acf5bdecbabb) )
ROM_REGION( 0x800, "mcu", 0 ) ROM_REGION( 0x800, "mcu", 0 )
ROM_LOAD( "sun-8212.ic3", 0x000, 0x800, BAD_DUMP CRC(8869611e) SHA1(c6443f3bcb0cdb4d7b1b19afcbfe339c300f36aa) ) ROM_LOAD( "sun-8212.ic3", 0x000, 0x800, CRC(8869611e) SHA1(c6443f3bcb0cdb4d7b1b19afcbfe339c300f36aa) )
ROM_END ROM_END
@ -570,7 +437,7 @@ ROM_START( arabiana )
ROM_LOAD( "tvg-94.ic87", 0x6000, 0x2000, CRC(82160b9a) SHA1(03511f6ebcf22ba709a80a565e71acf5bdecbabb) ) ROM_LOAD( "tvg-94.ic87", 0x6000, 0x2000, CRC(82160b9a) SHA1(03511f6ebcf22ba709a80a565e71acf5bdecbabb) )
ROM_REGION( 0x800, "mcu", 0 ) ROM_REGION( 0x800, "mcu", 0 )
ROM_LOAD( "sun-8212.ic3", 0x000, 0x800, BAD_DUMP CRC(8869611e) SHA1(c6443f3bcb0cdb4d7b1b19afcbfe339c300f36aa) ) ROM_LOAD( "sun-8212.ic3", 0x000, 0x800, CRC(8869611e) SHA1(c6443f3bcb0cdb4d7b1b19afcbfe339c300f36aa) )
ROM_END ROM_END
@ -583,12 +450,7 @@ ROM_END
static DRIVER_INIT( arabian ) static DRIVER_INIT( arabian )
{ {
#if SIMULATE_MCU
memory_install_write8_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xd34b, 0xd34b, 0, 0, custom_flip_w);
memory_install_write8_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xd400, 0xd401, 0, 0, custom_cocktail_w);
#else
cputag_set_input_line(machine, "mcu", INPUT_LINE_RESET, ASSERT_LINE); cputag_set_input_line(machine, "mcu", INPUT_LINE_RESET, ASSERT_LINE);
#endif
} }

5
src/mame/includes/arabian.h
View File

@ -23,10 +23,7 @@ public:
UINT8 video_control; UINT8 video_control;
UINT8 flip_screen; UINT8 flip_screen;
/* misc */ /* MCU */
UINT8 custom_cpu_reset;
UINT8 custom_cpu_busy;
UINT8 mcu_port_o; UINT8 mcu_port_o;
UINT8 mcu_port_p; UINT8 mcu_port_p;
UINT8 mcu_port_r[4]; UINT8 mcu_port_r[4];