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cultures.c, modernize it a bit (nw)

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This commit is contained in:
mamehaze 2014-12-02 12:51:23 +00:00
parent 596e1074f4
commit ad3dc11cf0
1 changed files with 43 additions and 47 deletions
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90
src/mame/drivers/cultures.c
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@ -11,6 +11,7 @@
#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/okim6295.h"
#include "machine/bankdev.h"
#define MCLK 16000000
@ -28,9 +29,10 @@ public:
m_bg2_regs_y(*this, "bg2_regs_y"),
m_maincpu(*this, "maincpu"),
m_gfxdecode(*this, "gfxdecode"),
m_palette(*this, "palette") { }
m_palette(*this, "palette"),
m_vrambank(*this, "vrambank")
{ }
UINT8 m_paletteram[0x4000];
/* memory pointers */
required_shared_ptr<UINT8> m_bg0_videoram;
required_shared_ptr<UINT8> m_bg0_regs_x;
@ -44,11 +46,9 @@ public:
tilemap_t *m_bg0_tilemap;
tilemap_t *m_bg1_tilemap;
tilemap_t *m_bg2_tilemap;
int m_video_bank;
int m_irq_enable;
int m_bg1_bank;
int m_bg2_bank;
int m_old_bank;
DECLARE_WRITE8_MEMBER(cpu_bankswitch_w);
DECLARE_WRITE8_MEMBER(bg0_videoram_w);
DECLARE_WRITE8_MEMBER(misc_w);
@ -64,6 +64,7 @@ public:
required_device<cpu_device> m_maincpu;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
required_device<address_map_bank_device> m_vrambank;
};
@ -138,45 +139,19 @@ UINT32 cultures_state::screen_update_cultures(screen_device &screen, bitmap_ind1
WRITE8_MEMBER(cultures_state::cpu_bankswitch_w)
{
membank("bank1")->set_entry(data & 0x0f);
m_video_bank = ~data & 0x20;
m_vrambank->set_bank((data & 0x20)>>5);
}
WRITE8_MEMBER(cultures_state::bg0_videoram_w)
{
if (m_video_bank == 0)
{
int r, g, b, datax;
m_paletteram[offset] = data;
offset >>= 1;
datax = m_paletteram[offset * 2] + 256 * m_paletteram[offset * 2 + 1];
r = ((datax >> 7) & 0x1e) | ((datax & 0x4000) ? 0x1 : 0);
g = ((datax >> 3) & 0x1e) | ((datax & 0x2000) ? 0x1 : 0);
b = ((datax << 1) & 0x1e) | ((datax & 0x1000) ? 0x1 : 0);
m_palette->set_pen_color(offset, pal5bit(r), pal5bit(g), pal5bit(b));
}
else
{
m_bg0_videoram[offset] = data;
m_bg0_tilemap->mark_tile_dirty(offset >> 1);
}
m_bg0_videoram[offset] = data;
m_bg0_tilemap->mark_tile_dirty(offset >> 1);
}
WRITE8_MEMBER(cultures_state::misc_w)
{
int new_bank = data & 0xf;
if (m_old_bank != new_bank)
{
// oki banking
UINT8 *src = memregion("oki")->base() + 0x40000 + 0x20000 * new_bank;
UINT8 *dst = memregion("oki")->base() + 0x20000;
memcpy(dst, src, 0x20000);
m_old_bank = new_bank;
}
membank("okibank")->set_entry(data&0x0f);
m_irq_enable = data & 0x80;
}
@ -196,10 +171,21 @@ WRITE8_MEMBER(cultures_state::bg_bank_w)
coin_counter_w(machine(), 0, data & 0x10);
}
static ADDRESS_MAP_START( oki_map, AS_0, 8, cultures_state )
AM_RANGE(0x00000, 0x1ffff) AM_ROM
AM_RANGE(0x20000, 0x3ffff) AM_ROMBANK("okibank")
ADDRESS_MAP_END
static ADDRESS_MAP_START( vrambank_map, AS_PROGRAM, 8, cultures_state )
AM_RANGE(0x0000, 0x3fff) AM_RAM_WRITE(bg0_videoram_w) AM_SHARE("bg0_videoram")
AM_RANGE(0x4000, 0x6fff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
ADDRESS_MAP_END
static ADDRESS_MAP_START( cultures_map, AS_PROGRAM, 8, cultures_state )
AM_RANGE(0x0000, 0x3fff) AM_ROM
AM_RANGE(0x4000, 0x7fff) AM_ROMBANK("bank1")
AM_RANGE(0x8000, 0xbfff) AM_RAM_WRITE(bg0_videoram_w) AM_SHARE("bg0_videoram")
AM_RANGE(0x8000, 0xbfff) AM_DEVICE("vrambank", address_map_bank_device, amap8)
AM_RANGE(0xc000, 0xdfff) AM_RAM
AM_RANGE(0xf000, 0xffff) AM_RAM
ADDRESS_MAP_END
@ -380,10 +366,9 @@ void cultures_state::machine_start()
UINT8 *ROM = memregion("maincpu")->base();
membank("bank1")->configure_entries(0, 16, &ROM[0x0000], 0x4000);
membank("okibank")->configure_entries(0, 0x200000 / 0x20000, memregion("oki")->base(), 0x20000);
membank("okibank")->set_entry(0);
save_item(NAME(m_paletteram));
save_item(NAME(m_old_bank));
save_item(NAME(m_video_bank));
save_item(NAME(m_irq_enable));
save_item(NAME(m_bg1_bank));
save_item(NAME(m_bg2_bank));
@ -391,13 +376,15 @@ void cultures_state::machine_start()
void cultures_state::machine_reset()
{
m_old_bank = -1;
m_video_bank = 0;
membank("okibank")->set_entry(0);
m_vrambank->set_bank(1);
m_irq_enable = 0;
m_bg1_bank = 0;
m_bg2_bank = 0;
}
static MACHINE_CONFIG_START( cultures, cultures_state )
/* basic machine hardware */
@ -406,6 +393,13 @@ static MACHINE_CONFIG_START( cultures, cultures_state )
MCFG_CPU_IO_MAP(cultures_io_map)
MCFG_CPU_VBLANK_INT_DRIVER("screen", cultures_state, cultures_interrupt)
MCFG_DEVICE_ADD("vrambank", ADDRESS_MAP_BANK, 0)
MCFG_DEVICE_PROGRAM_MAP(vrambank_map)
MCFG_ADDRESS_MAP_BANK_ENDIANNESS(ENDIANNESS_LITTLE)
MCFG_ADDRESS_MAP_BANK_DATABUS_WIDTH(8)
MCFG_ADDRESS_MAP_BANK_ADDRBUS_WIDTH(15)
MCFG_ADDRESS_MAP_BANK_STRIDE(0x4000)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
@ -417,14 +411,17 @@ static MACHINE_CONFIG_START( cultures, cultures_state )
MCFG_SCREEN_PALETTE("palette")
MCFG_GFXDECODE_ADD("gfxdecode", "palette", culture)
MCFG_PALETTE_ADD("palette", 0x2000)
MCFG_PALETTE_ADD("palette", 0x3000/2)
MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit0)
MCFG_PALETTE_ENDIANNESS(ENDIANNESS_LITTLE)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_OKIM6295_ADD("oki", (MCLK/1024)*132, OKIM6295_PIN7_HIGH) // clock frequency & pin 7 not verified
MCFG_OKIM6295_ADD("oki", MCLK/8, OKIM6295_PIN7_HIGH) // clock frequency & pin 7 not verified
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
MCFG_DEVICE_ADDRESS_MAP(AS_0, oki_map)
MACHINE_CONFIG_END
/*
@ -485,9 +482,8 @@ ROM_START( cultures )
ROM_LOAD( "bg1t.u67", 0x200000, 0x100000, CRC(d2e594ee) SHA1(a84b5ab62dec1867d433ccaeb1381e7593958cf0) )
/* 0x300000 - 0x3fffff empty */
ROM_REGION( 0x240000, "oki", 0 )
ROM_LOAD( "pcm.u87", 0x040000, 0x200000, CRC(84206475) SHA1(d1423bd5c7425e121fb4e7845cf57801e9afa7b3) )
ROM_RELOAD( 0x000000, 0x020000 )
ROM_REGION( 0x200000, "oki", 0 )
ROM_LOAD( "pcm.u87", 0x000000, 0x200000, CRC(84206475) SHA1(d1423bd5c7425e121fb4e7845cf57801e9afa7b3) )
ROM_END