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Updated 20pacgal to use EEPROM device. Proper save state support still needs some work (to handle the rom banking mechanism).

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Updated galgbios to use EEPROM_NODEFAULT.
This commit is contained in:
Fabio Priuli 2009-11-18 12:59:47 +00:00
parent 514c637bbe
commit 778aebca90
3 changed files with 49 additions and 39 deletions
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73
src/mame/drivers/20pacgal.c
View File

@ -37,7 +37,7 @@
#include "driver.h"
#include "cpu/z180/z180.h"
#include "machine/eeprom.h"
#include "machine/eepromdev.h"
#include "sound/namco.h"
#include "sound/dac.h"
#include "20pacgal.h"
@ -69,7 +69,7 @@ static WRITE8_HANDLER( irqack_w )
cpu_interrupt_enable(cputag_get_cpu(space->machine, "maincpu"), bit);
if (!bit)
cputag_set_input_line(space->machine, "maincpu", 0, CLEAR_LINE );
cputag_set_input_line(space->machine, "maincpu", 0, CLEAR_LINE);
}
@ -94,47 +94,37 @@ static const namco_interface namco_config =
*
*************************************/
static const eeprom_interface eeprom_intf =
static const eeprom_interface _20pacgal_eeprom_intf =
{
7, /* address bits */
8, /* data bits */
"*110", /* read command */
"*101", /* write command */
0, /* erase command */
"*10000xxxxx", /* lock command */
"*10011xxxxx", /* unlock command */
7, /* address bits */
8, /* data bits */
"*110", /* read command */
"*101", /* write command */
0, /* erase command */
"*10000xxxxx", /* lock command */
"*10011xxxxx", /* unlock command */
};
static NVRAM_HANDLER( eeprom )
static READ8_DEVICE_HANDLER( eeprom_r )
{
if (read_or_write)
eeprom_save(file);
else
{
eeprom_init(machine, &eeprom_intf);
_20pacgal_state *state = (_20pacgal_state *)device->machine->driver_data;
if (file)
eeprom_load(file);
}
}
static READ8_HANDLER( eeprom_r )
{
/* bit 7 is EEPROM data */
return eeprom_read_bit() << 7;
return eepromdev_read_bit(state->eeprom) << 7;
}
static WRITE8_HANDLER( eeprom_w )
static WRITE8_DEVICE_HANDLER( eeprom_w )
{
_20pacgal_state *state = (_20pacgal_state *)device->machine->driver_data;
/* bit 7 is data */
/* bit 6 is clock (active high) */
/* bit 5 is cs (active low) */
eeprom_write_bit(data & 0x80);
eeprom_set_cs_line((data & 0x20) ? CLEAR_LINE : ASSERT_LINE);
eeprom_set_clock_line((data & 0x40) ? ASSERT_LINE : CLEAR_LINE);
eepromdev_write_bit(state->eeprom, data & 0x80);
eepromdev_set_cs_line(state->eeprom, (data & 0x20) ? CLEAR_LINE : ASSERT_LINE);
eepromdev_set_clock_line(state->eeprom, (data & 0x40) ? ASSERT_LINE : CLEAR_LINE);
}
@ -167,7 +157,7 @@ static WRITE8_HANDLER( rom_bank_select_w )
if (state->game_selected == 0)
{
UINT8 *rom = memory_region(space->machine, "maincpu");
memcpy(rom+0x48000, rom+0x8000, 0x2000);
memcpy(rom + 0x48000, rom + 0x8000, 0x2000);
}
}
@ -229,7 +219,7 @@ static ADDRESS_MAP_START( 20pacgal_io_map, ADDRESS_SPACE_IO, 8 )
AM_RANGE(0x81, 0x81) AM_WRITENOP /* ??? pulsed by the timer irq */
AM_RANGE(0x82, 0x82) AM_WRITE(irqack_w)
AM_RANGE(0x85, 0x86) AM_WRITENOP /* stars: rng seed (lo/hi) */
AM_RANGE(0x87, 0x87) AM_READWRITE(eeprom_r, eeprom_w)
AM_RANGE(0x87, 0x87) AM_DEVREADWRITE("eeprom", eeprom_r, eeprom_w)
AM_RANGE(0x88, 0x88) AM_WRITE(rom_bank_select_w)
AM_RANGE(0x89, 0x89) AM_DEVWRITE("dac", dac_signed_w)
AM_RANGE(0x8a, 0x8a) AM_WRITENOP /* stars: bits 3-4 = active set; bit 5 = enable */
@ -285,6 +275,22 @@ INPUT_PORTS_END
*
*************************************/
static MACHINE_START( 20pacgal )
{
_20pacgal_state *state = (_20pacgal_state *)machine->driver_data;
state->eeprom = devtag_get_device(machine, "eeprom");
state_save_register_global(machine, state->game_selected);
}
static MACHINE_RESET( 20pacgal )
{
_20pacgal_state *state = (_20pacgal_state *)machine->driver_data;
state->game_selected = 0;
}
static MACHINE_DRIVER_START( 20pacgal )
MDRV_DRIVER_DATA(_20pacgal_state)
@ -295,7 +301,10 @@ static MACHINE_DRIVER_START( 20pacgal )
MDRV_CPU_IO_MAP(20pacgal_io_map)
MDRV_CPU_VBLANK_INT("screen", irq0_line_assert)
MDRV_NVRAM_HANDLER(eeprom)
MDRV_MACHINE_START(20pacgal)
MDRV_MACHINE_RESET(20pacgal)
MDRV_EEPROM_NODEFAULT_ADD("eeprom", _20pacgal_eeprom_intf)
/* video hardware */
MDRV_IMPORT_FROM(20pacgal_video)

12
src/mame/drivers/tmaster.c
View File

@ -939,19 +939,17 @@ static MACHINE_RESET( galgames )
device_reset(cputag_get_cpu(machine, "maincpu"));
}
static UINT8 *galgames_eeprom_data = NULL;
static MACHINE_DRIVER_START( galgames )
MDRV_CPU_ADD("maincpu", M68000, XTAL_24MHz / 2)
MDRV_CPU_PROGRAM_MAP(galgames_map)
MDRV_CPU_VBLANK_INT_HACK(galgames_interrupt, 1+20) // ??
// 5 EEPROMs on the motherboard (for BIOS + 4 Carts)
MDRV_EEPROM_ADD(GALGAMES_EEPROM_BIOS, galgames_eeprom_interface, 0, galgames_eeprom_data)
MDRV_EEPROM_ADD(GALGAMES_EEPROM_CART1, galgames_eeprom_interface, 0, galgames_eeprom_data)
MDRV_EEPROM_ADD(GALGAMES_EEPROM_CART2, galgames_eeprom_interface, 0, galgames_eeprom_data)
MDRV_EEPROM_ADD(GALGAMES_EEPROM_CART3, galgames_eeprom_interface, 0, galgames_eeprom_data)
MDRV_EEPROM_ADD(GALGAMES_EEPROM_CART4, galgames_eeprom_interface, 0, galgames_eeprom_data)
MDRV_EEPROM_NODEFAULT_ADD(GALGAMES_EEPROM_BIOS, galgames_eeprom_interface)
MDRV_EEPROM_NODEFAULT_ADD(GALGAMES_EEPROM_CART1, galgames_eeprom_interface)
MDRV_EEPROM_NODEFAULT_ADD(GALGAMES_EEPROM_CART2, galgames_eeprom_interface)
MDRV_EEPROM_NODEFAULT_ADD(GALGAMES_EEPROM_CART3, galgames_eeprom_interface)
MDRV_EEPROM_NODEFAULT_ADD(GALGAMES_EEPROM_CART4, galgames_eeprom_interface)
MDRV_MACHINE_RESET( galgames )

3
src/mame/includes/20pacgal.h
View File

@ -20,6 +20,9 @@ struct __20pacgal_state
/* machine state */
UINT8 game_selected; /* 0 = Ms. Pac-Man, 1 = Galaga */
/* devices */
const device_config *eeprom;
};