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atarisy2.c: configured banking (nw)

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This commit is contained in:
Ivan Vangelista 2015-06-26 23:28:36 +02:00
parent 7a2eac723e
commit e2fd8e0690
2 changed files with 33 additions and 37 deletions
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64
src/mame/drivers/atarisy2.c
View File

@ -203,6 +203,9 @@ MACHINE_START_MEMBER(atarisy2_state,atarisy2)
save_item(NAME(m_p2portwr_state));
save_item(NAME(m_p2portrd_state));
save_item(NAME(m_sound_reset_state));
m_rombank1->configure_entries(0, 64, memregion("maincpu")->base() + 0x10000, 0x2000);
m_rombank2->configure_entries(0, 64, memregion("maincpu")->base() + 0x10000, 0x2000);
}
@ -272,44 +275,39 @@ WRITE16_MEMBER(atarisy2_state::int_enable_w)
WRITE16_MEMBER(atarisy2_state::bankselect_w)
{
static const int bankoffset[64] =
/*static const int bankoffset[64] =
{
0x28000, 0x20000, 0x18000, 0x10000,
0x2a000, 0x22000, 0x1a000, 0x12000,
0x2c000, 0x24000, 0x1c000, 0x14000,
0x2e000, 0x26000, 0x1e000, 0x16000,
0x48000, 0x40000, 0x38000, 0x30000,
0x4a000, 0x42000, 0x3a000, 0x32000,
0x4c000, 0x44000, 0x3c000, 0x34000,
0x4e000, 0x46000, 0x3e000, 0x36000,
0x68000, 0x60000, 0x58000, 0x50000,
0x6a000, 0x62000, 0x5a000, 0x52000,
0x6c000, 0x64000, 0x5c000, 0x54000,
0x6e000, 0x66000, 0x5e000, 0x56000,
0x88000, 0x80000, 0x78000, 0x70000,
0x8a000, 0x82000, 0x7a000, 0x72000,
0x8c000, 0x84000, 0x7c000, 0x74000,
0x8e000, 0x86000, 0x7e000, 0x76000
};
12, 8, 4, 0,
13, 9, 5, 1,
14, 10, 6, 2,
15, 11, 7, 3,
28, 24, 20, 16,
29, 25, 21, 17,
30, 26, 22, 18,
31, 27, 23, 19,
44, 40, 36, 32,
45, 41, 37, 33,
46, 42, 38, 34,
47, 43, 39, 35,
60, 56, 52, 48,
61, 57, 53, 49,
62, 58, 54, 50,
63, 59, 55, 51
};*/
int newword = m_bankselect[offset];
UINT8 *base;
COMBINE_DATA(&newword);
m_bankselect[offset] = newword;
base = &memregion("maincpu")->base()[bankoffset[(newword >> 10) & 0x3f]];
memcpy(offset ? m_rombank2 : m_rombank1, base, 0x2000);
int banknumber = ((data >> 10) & 0x3f) ^ 0x03;
banknumber = BITSWAP16(banknumber, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 1, 0, 3, 2);
if (offset)
m_rombank2->set_entry(banknumber);
else
m_rombank1->set_entry(banknumber);
}
void atarisy2_state::device_post_load()
{
atarigen_state::device_post_load();
address_space &space = m_maincpu->space(AS_PROGRAM);
bankselect_w(space, 0, m_bankselect[0], 0xffff);
bankselect_w(space, 1, m_bankselect[1], 0xffff);
}
@ -754,7 +752,7 @@ WRITE8_MEMBER(atarisy2_state::coincount_w)
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, atarisy2_state )
AM_RANGE(0x0000, 0x0fff) AM_RAM
AM_RANGE(0x1000, 0x11ff) AM_MIRROR(0x0200) AM_RAM_WRITE(paletteram_w) AM_SHARE("paletteram")
AM_RANGE(0x1400, 0x1403) AM_MIRROR(0x007c) AM_READWRITE(adc_r, bankselect_w) AM_SHARE("bankselect")
AM_RANGE(0x1400, 0x1403) AM_MIRROR(0x007c) AM_READWRITE(adc_r, bankselect_w)
AM_RANGE(0x1480, 0x1487) AM_MIRROR(0x0078) AM_WRITE(adc_strobe_w)
AM_RANGE(0x1580, 0x1581) AM_MIRROR(0x001e) AM_WRITE(int0_ack_w)
AM_RANGE(0x15a0, 0x15a1) AM_MIRROR(0x001e) AM_WRITE(int1_ack_w)
@ -767,8 +765,8 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, atarisy2_state )
AM_RANGE(0x1800, 0x1801) AM_MIRROR(0x03fe) AM_READ(switch_r) AM_WRITE(watchdog_reset16_w)
AM_RANGE(0x1c00, 0x1c01) AM_MIRROR(0x03fe) AM_READ(sound_r)
AM_RANGE(0x2000, 0x3fff) AM_READWRITE(videoram_r, videoram_w)
AM_RANGE(0x4000, 0x5fff) AM_ROM AM_SHARE("rombank1")
AM_RANGE(0x6000, 0x7fff) AM_ROM AM_SHARE("rombank2")
AM_RANGE(0x4000, 0x5fff) AM_ROMBANK("rombank1")
AM_RANGE(0x6000, 0x7fff) AM_ROMBANK("rombank2")
AM_RANGE(0x8000, 0x81ff) AM_READWRITE(slapstic_r, slapstic_w) AM_SHARE("slapstic_base")
AM_RANGE(0x8000, 0xffff) AM_ROM
ADDRESS_MAP_END

6
src/mame/includes/atarisy2.h
View File

@ -21,7 +21,6 @@ public:
m_audiocpu(*this, "audiocpu"),
m_mob(*this, "mob"),
m_slapstic_base(*this, "slapstic_base"),
m_bankselect(*this, "bankselect"),
m_playfield_tilemap(*this, "playfield"),
m_alpha_tilemap(*this, "alpha"),
m_rombank1(*this, "rombank1"),
@ -36,7 +35,6 @@ public:
required_shared_ptr<UINT16> m_slapstic_base;
UINT8 m_interrupt_enable;
required_shared_ptr<UINT16> m_bankselect;
required_device<tilemap_device> m_playfield_tilemap;
required_device<tilemap_device> m_alpha_tilemap;
@ -50,8 +48,8 @@ public:
UINT8 m_p2portwr_state;
UINT8 m_p2portrd_state;
required_shared_ptr<UINT16> m_rombank1;
required_shared_ptr<UINT16> m_rombank2;
required_memory_bank m_rombank1;
required_memory_bank m_rombank2;
required_shared_ptr<UINT16> m_generic_paletteram_16;
required_device<atari_slapstic_device> m_slapstic;