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megavdp cleanup (nw)

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This commit is contained in:
Miodrag Milanovic 2014-03-25 12:27:36 +00:00
parent e5644c2735
commit d8dda01631
5 changed files with 16 additions and 31 deletions
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9
src/mame/drivers/puckpkmn.c
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@ -221,8 +221,9 @@ static ADDRESS_MAP_START( puckpkmn_map, AS_PROGRAM, 16, md_boot_state )
AM_RANGE(0x700018, 0x700019) AM_READ_PORT("DSW2")
AM_RANGE(0x700022, 0x700023) AM_DEVREADWRITE8("oki", okim6295_device, read, write, 0x00ff)
AM_RANGE(0xa04000, 0xa04003) AM_READWRITE8(megadriv_68k_YM2612_read, megadriv_68k_YM2612_write, 0xffff)
AM_RANGE(0xc00000, 0xc0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00000, 0xc0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_RAM AM_MIRROR(0x1f0000)
/* Unknown reads/writes: */
@ -245,8 +246,8 @@ static ADDRESS_MAP_START( jzth_map, AS_PROGRAM, 16, md_boot_state )
AM_RANGE(0x700018, 0x700019) AM_READ_PORT("DSW2")
AM_RANGE(0x700022, 0x700023) AM_DEVREADWRITE8("oki", okim6295_device, read, write, 0x00ff)
AM_RANGE(0xa04000, 0xa04003) AM_READWRITE8( megadriv_68k_YM2612_read, megadriv_68k_YM2612_write, 0xffff)
AM_RANGE(0xc00000, 0xc0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00000, 0xc0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_RAM AM_MIRROR(0x1f0000)

3
src/mame/drivers/segac2.c
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@ -602,7 +602,8 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, segac2_state )
AM_RANGE(0x840100, 0x840107) AM_MIRROR(0x13fef8) AM_DEVREADWRITE8("ymsnd", ym3438_device, read, write, 0x00ff)
AM_RANGE(0x880100, 0x880101) AM_MIRROR(0x13fefe) AM_WRITE(counter_timer_w)
AM_RANGE(0x8c0000, 0x8c0fff) AM_MIRROR(0x13f000) AM_READWRITE(palette_r, palette_w) AM_SHARE("paletteram")
AM_RANGE(0xc00000, 0xc0001f) AM_MIRROR(0x18ff00) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00000, 0xc0000f) AM_MIRROR(0x18ff00) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_MIRROR(0x18ff00) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_MIRROR(0x1f0000) AM_RAM AM_SHARE("nvram")
ADDRESS_MAP_END

7
src/mame/machine/megadriv.c
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@ -513,9 +513,10 @@ static ADDRESS_MAP_START( megadriv_map, AS_PROGRAM, 16, md_base_state )
// AM_RANGE(0xb10000, 0xb1007f) AM_RAM AM_SHARE("megadrive_vdp_vsram")
// AM_RANGE(0xb10100, 0xb1017f) AM_RAM AM_SHARE("megadrive_vdp_cram")
AM_RANGE(0xc00000, 0xc0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xd00000, 0xd0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w) // the earth defend
AM_RANGE(0xc00000, 0xc0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xd00000, 0xd0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w) // the earth defend
AM_RANGE(0xd00010, 0xd0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_RAM AM_MIRROR(0x1f0000) AM_SHARE("megadrive_ram")
// AM_RANGE(0xff0000, 0xffffff) AM_READONLY
/* 0xe00000 - 0xffffff) == MAIN RAM (64kb, Mirrored, most games use ff0000 - ffffff) */

21
src/mame/machine/megavdp.c
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@ -817,19 +817,6 @@ WRITE16_MEMBER( sega_genesis_vdp_device::megadriv_vdp_w )
case 0x0e:
logerror("Attempt to Write to HV counters!!\n");
break;
case 0x10:
case 0x12:
case 0x14:
case 0x16:
{
// accessed by either segapsg_device or sn76496_device
sn76496_base_device *sn = machine().device<sn76496_base_device>(":snsnd");
if (ACCESSING_BITS_0_7) sn->write(space, 0, data & 0xff);
//if (ACCESSING_BITS_8_15) sn->write(space, 0, (data>>8) & 0xff);
break;
}
default:
mame_printf_debug("write to unmapped vdp port\n");
}
@ -1236,14 +1223,6 @@ READ16_MEMBER( sega_genesis_vdp_device::megadriv_vdp_r )
// retvalue = machine().rand();
// mame_printf_debug("%06x: Read HV counters at scanline %d hpos %d (return %04x)\n",space.device().safe_pc(),genesis_get_scanline_counter(), get_hposition(),retvalue);
break;
case 0x10:
case 0x12:
case 0x14:
case 0x16:
logerror("Attempting to read PSG!\n");
retvalue = 0;
break;
}
return retvalue;
}

7
src/mess/drivers/segapico.c
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@ -299,7 +299,8 @@ static ADDRESS_MAP_START( pico_mem, AS_PROGRAM, 16, pico_base_state )
AM_RANGE(0x800000, 0x80001f) AM_READWRITE(pico_68k_io_read, pico_68k_io_write)
AM_RANGE(0xc00000, 0xc0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00000, 0xc0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_RAM AM_MIRROR(0x1f0000)
ADDRESS_MAP_END
@ -505,7 +506,9 @@ static ADDRESS_MAP_START( copera_mem, AS_PROGRAM, 16, copera_state )
AM_RANGE(0x800000, 0x80001f) AM_READWRITE(pico_68k_io_read, pico_68k_io_write)
AM_RANGE(0xc00000, 0xc0001f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00000, 0xc0000f) AM_DEVREADWRITE("gen_vdp", sega_genesis_vdp_device, megadriv_vdp_r,megadriv_vdp_w)
AM_RANGE(0xc00010, 0xc0001f) AM_DEVWRITE8("snsnd", sn76496_base_device, write, 0x00ff)
AM_RANGE(0xe00000, 0xe0ffff) AM_RAM AM_MIRROR(0x1f0000)
ADDRESS_MAP_END