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cmmb162: NVRAM access to the 29c020 flash ROM now works properly (nw)

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This commit is contained in:
arbee 2018-08-25 22:15:49 -04:00
parent ab13253d01
commit 0e07c496ce
1 changed files with 14 additions and 2 deletions
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16
src/mame/drivers/cmmb.cpp
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@ -84,6 +84,8 @@ public:
DECLARE_WRITE8_MEMBER(cmmb_charram_w); DECLARE_WRITE8_MEMBER(cmmb_charram_w);
DECLARE_READ8_MEMBER(cmmb_input_r); DECLARE_READ8_MEMBER(cmmb_input_r);
DECLARE_WRITE8_MEMBER(cmmb_output_w); DECLARE_WRITE8_MEMBER(cmmb_output_w);
DECLARE_READ8_MEMBER(flash_r);
DECLARE_WRITE8_MEMBER(flash_w);
virtual void machine_reset() override; virtual void machine_reset() override;
virtual void video_start() override; virtual void video_start() override;
@ -142,6 +144,16 @@ WRITE8_MEMBER(cmmb_state::cmmb_charram_w)
m_gfxdecode->gfx(1)->mark_dirty(offset >> 5); m_gfxdecode->gfx(1)->mark_dirty(offset >> 5);
} }
READ8_MEMBER(cmmb_state::flash_r)
{
return m_flash->read(space, offset + 0x2000);
}
WRITE8_MEMBER(cmmb_state::flash_w)
{
m_flash->write(space, offset + 0x2000, data);
}
READ8_MEMBER(cmmb_state::cmmb_input_r) READ8_MEMBER(cmmb_state::cmmb_input_r)
{ {
//printf("%02x R\n",offset); //printf("%02x R\n",offset);
@ -221,7 +233,7 @@ void cmmb_state::bnk2000_map(address_map &map)
map(0x0680, 0x0680).nopw(); map(0x0680, 0x0680).nopw();
map(0x6000, 0x7fff).rom().region("maincpu", 0x18000); map(0x6000, 0x7fff).rom().region("maincpu", 0x18000);
map(0x8000, 0xffff).rw("at29c020", FUNC(at29c020_device::read), FUNC(at29c020_device::write)); map(0x8000, 0xffff).rw(FUNC(cmmb_state::flash_r), FUNC(cmmb_state::flash_w));
} }
static INPUT_PORTS_START( cmmb ) static INPUT_PORTS_START( cmmb )
@ -359,7 +371,7 @@ static INPUT_PORTS_START( cmmb )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNKNOWN ) // if this is lit up, coins will auto-insert each frame until they hit 99 (?!) PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_SERVICE2 ) // if this is lit up, coins will auto-insert each frame until they hit 99 (?!)
INPUT_PORTS_END INPUT_PORTS_END
static const gfx_layout charlayout = static const gfx_layout charlayout =