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https://github.com/holub/mame
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csilver: identified 3 bad bits in MCU dump, hooked up MCU [dink]
This commit is contained in:
David Haywood
GitHub
parent
5ad522f0c1
commit
35cde25ed2
@ -168,80 +168,6 @@ WRITE8_MEMBER(dec8_state::dec8_i8751_w)
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}
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}
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/********************************
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*
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* MCU simulations
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*
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********************************/
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WRITE8_MEMBER(dec8_state::csilver_i8751_w)
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{
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/* Japan coinage first, then World coinage - US coinage shall be the same as the Japan one */
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int lneed1[2][4] = {{1, 1, 1, 2}, {1, 1, 1, 1}}; /* slot 1 : coins needed */
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int lcred1[2][4] = {{1, 2, 3, 1}, {2, 3, 4, 6}}; /* slot 1 : credits awarded */
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int lneed2[2][4] = {{1, 1, 1, 2}, {1, 2, 3, 4}}; /* slot 2 : coins needed */
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int lcred2[2][4] = {{1, 2, 3, 1}, {1, 1, 1, 1}}; /* slot 2 : credits awarded */
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m_i8751_return = 0;
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switch (offset)
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{
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case 0: /* High byte */
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m_i8751_value = (m_i8751_value & 0xff) | (data << 8);
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m_maincpu->set_input_line(M6809_FIRQ_LINE, ASSERT_LINE); /* Signal main cpu */
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break;
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case 1: /* Low byte */
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m_i8751_value = (m_i8751_value & 0xff00) | data;
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break;
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}
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/* Coins are controlled by the i8751 */
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if ((ioport("IN2")->read() & 3) == 3) m_latch = 1;
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if ((ioport("IN2")->read() & 1) != 1 && m_latch)
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{
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m_coin1++;
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m_latch = 0;
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m_snd = 0x1200;
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m_i8751_return = 0x1200;
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if (m_coin1>=m_need1)
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{
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m_coin1-=m_need1;
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m_credits+=m_cred1;
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}
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}
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if ((ioport("IN2")->read() & 2) != 2 && m_latch)
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{
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m_coin2++;
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m_latch = 0;
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m_snd = 0x1200;
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m_i8751_return = 0x1200;
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if (m_coin2>=m_need2)
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{
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m_coin2-=m_need2;
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m_credits+=m_cred2;
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}
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}
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if (m_credits>99) m_credits=99; /* not handled by main CPU */
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if (m_i8751_value == 0x054a) { m_i8751_return = 0xb5; m_coinage_id = 0; } /* Japanese version ID */
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if (m_i8751_value == 0x054c) { m_i8751_return = 0xb3; m_coinage_id = 1; } /* World version ID */
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if (offset == 0)
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{
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if ((m_i8751_value >> 8) == 0x01) /* Coinage settings */
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{
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m_i8751_return = m_i8751_value;
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m_need1 = lneed1[m_coinage_id][(m_i8751_value & 0x03) >> 0];
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m_need2 = lneed2[m_coinage_id][(m_i8751_value & 0x0c) >> 2];
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m_cred1 = lcred1[m_coinage_id][(m_i8751_value & 0x03) >> 0];
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m_cred2 = lcred2[m_coinage_id][(m_i8751_value & 0x0c) >> 2];
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}
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if ((m_i8751_value >> 8) == 0x02) { m_i8751_return = m_snd | m_credits; m_snd = 0; } /* Credits request */
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if ((m_i8751_value >> 8) == 0x03 && m_credits) { m_i8751_return = 0; m_credits--; } /* Credits clear */
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}
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}
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/******************************************************************************/
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WRITE8_MEMBER(dec8_state::dec8_bank_w)
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@ -545,7 +471,7 @@ void dec8_state::csilver_map(address_map &map)
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map(0x1808, 0x180b).w(FUNC(dec8_state::dec8_scroll2_w));
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map(0x180c, 0x180c).w(FUNC(dec8_state::dec8_sound_w));
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map(0x180d, 0x180d).w(FUNC(dec8_state::csilver_control_w));
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map(0x180e, 0x180f).w(FUNC(dec8_state::csilver_i8751_w));
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map(0x180e, 0x180f).w(FUNC(dec8_state::dec8_i8751_w));
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map(0x1c00, 0x1c00).r(FUNC(dec8_state::i8751_h_r));
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map(0x1e00, 0x1e00).r(FUNC(dec8_state::i8751_l_r));
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map(0x2000, 0x27ff).ram().w(FUNC(dec8_state::dec8_videoram_w));
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@ -821,6 +747,27 @@ void dec8_state::srdarwin_mcu_to_main_w(uint8_t data)
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m_maincpu->set_input_line(MCS51_INT1_LINE, CLEAR_LINE);
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}
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void dec8_state::csilver_mcu_to_main_w(uint8_t data)
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{
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if (~data & 0x10)
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m_i8751_port0 = m_i8751_value >> 8;
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if (~data & 0x20)
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m_i8751_port1 = m_i8751_value & 0xff;
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if (~data & 0x40)
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{
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m_i8751_return = (m_i8751_return & 0xff) | (m_i8751_port0 << 8);
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m_subcpu->set_input_line(M6809_FIRQ_LINE, ASSERT_LINE); // FIRQ to main cpu
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}
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if (~data & 0x80)
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m_i8751_return = (m_i8751_return & 0xff00) | m_i8751_port1;
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m_i8751_p2 = data;
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}
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/******************************************************************************/
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#define PLAYER1_JOYSTICK /* Player 1 controls */ \
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@ -1333,8 +1280,8 @@ static INPUT_PORTS_START( csilver )
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PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_START("IN2")
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) // coins read through MCU
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED ) // ^
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
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@ -1383,6 +1330,10 @@ static INPUT_PORTS_START( csilver )
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PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPUNUSED( 0x80, IP_ACTIVE_LOW )
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PORT_START("I8751") /* hooked up on the i8751 */
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PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 )
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PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
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INPUT_PORTS_END
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/* verified from M6809 code - coinage needs further checking when the MCU is available */
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@ -1403,6 +1354,7 @@ static INPUT_PORTS_START( csilverj )
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INPUT_PORTS_END
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/* verified from HD6309 code */
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static INPUT_PORTS_START( oscar )
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PORT_START("IN0")
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@ -2182,6 +2134,7 @@ void dec8_state::meikyuh(machine_config &config)
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m_audiocpu->set_addrmap(AS_PROGRAM, &dec8_state::dec8_s_map);
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}
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void dec8_state::csilver(machine_config &config)
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{
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/* basic machine hardware */
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@ -2196,6 +2149,16 @@ void dec8_state::csilver(machine_config &config)
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config.set_maximum_quantum(attotime::from_hz(6000));
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I8751(config, m_mcu, XTAL(8'000'000));
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m_mcu->port_in_cb<0>().set(FUNC(dec8_state::i8751_port0_r));
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m_mcu->port_out_cb<0>().set(FUNC(dec8_state::i8751_port0_w));
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m_mcu->port_in_cb<1>().set(FUNC(dec8_state::i8751_port1_r));
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m_mcu->port_out_cb<1>().set(FUNC(dec8_state::i8751_port1_w));
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m_mcu->port_out_cb<2>().set(FUNC(dec8_state::csilver_mcu_to_main_w));
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m_mcu->port_in_cb<3>().set_ioport("I8751");
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config.set_perfect_quantum(m_maincpu);
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/* video hardware */
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BUFFERED_SPRITERAM8(config, m_spriteram);
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@ -3231,6 +3194,7 @@ Lower board (DATA EAST DE-0251-2):
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*/
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ROM_START( csilver )
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ROM_REGION( 0x48000, "maincpu", 0 )
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ROM_LOAD( "dx03-12.18d", 0x08000, 0x08000, CRC(2d926e7c) SHA1(cf38e92904edb1870b0a4965f9049d67efe8cf6a) )
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@ -3245,7 +3209,8 @@ ROM_START( csilver )
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ROM_REGION( 0x1000, "mcu", 0 ) /* i8751 microcontroller */
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// 017F: B4 4C 0D : cjne a,#$4C,$018F (ID code 0x4c = World version)
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ROM_LOAD( "id8751h.mcu", 0x0000, 0x1000, CRC(ca663965) SHA1(a5fb7afdfd324761bde4bb90ba12efc9954627af) ) // dx-8.19a ?
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// 3 bytes (always bit 0x08 set incorrectly) had to be hand fixed, hence 'BAD_DUMP'
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ROM_LOAD( "id8751h.mcu", 0x0000, 0x1000, BAD_DUMP CRC(c0266263) SHA1(27ac6fa4af7195f04249c04dec168ab82158704e) ) // dx-8.19a ?
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ROM_REGION( 0x08000, "gfx1", 0 ) /* characters */
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ROM_LOAD( "dx00.3d", 0x00000, 0x08000, CRC(f01ef985) SHA1(d5b823bd7c0efcf3137f8643c5d99a260bed5675) )
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@ -3282,7 +3247,8 @@ ROM_START( csilverj )
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ROM_LOAD( "dx05.a6", 0x00000, 0x10000, CRC(eb32cf25) SHA1(9390c88033259c65eb15320e31f5d696970987cc) )
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ROM_REGION( 0x1000, "mcu", 0 ) /* i8751 microcontroller */
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ROM_LOAD( "id8751h.mcu", 0x0000, 0x1000, NO_DUMP )
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// hand modified version of csilver ROM
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ROM_LOAD( "id8751h_japan.mcu", 0x0000, 0x1000, BAD_DUMP CRC(6e801217) SHA1(2d8f7ae533dd8146acf8461d61ddd839544adf55) )
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ROM_REGION( 0x08000, "gfx1", 0 ) /* characters */
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ROM_LOAD( "dx00.a1", 0x00000, 0x08000, CRC(f01ef985) SHA1(d5b823bd7c0efcf3137f8643c5d99a260bed5675) )
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@ -3320,7 +3286,8 @@ ROM_START( csilverja ) // DE-0250-3 + DE-0251-2
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ROM_LOAD( "dx05.3f", 0x00000, 0x10000, CRC(eb32cf25) SHA1(9390c88033259c65eb15320e31f5d696970987cc) )
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ROM_REGION( 0x1000, "mcu", 0 ) /* i8751 microcontroller */
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ROM_LOAD( "id8751h.mcu", 0x0000, 0x1000, NO_DUMP )
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// hand modified version of csilver ROM
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ROM_LOAD( "id8751h_japan.mcu", 0x0000, 0x1000, BAD_DUMP CRC(6e801217) SHA1(2d8f7ae533dd8146acf8461d61ddd839544adf55) )
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ROM_REGION( 0x08000, "gfx1", 0 ) /* characters */
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ROM_LOAD( "dx00.3d", 0x00000, 0x08000, CRC(f01ef985) SHA1(d5b823bd7c0efcf3137f8643c5d99a260bed5675) )
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@ -134,7 +134,6 @@ private:
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DECLARE_READ8_MEMBER(gondo_player_1_r);
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DECLARE_READ8_MEMBER(gondo_player_2_r);
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DECLARE_WRITE8_MEMBER(dec8_i8751_w);
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DECLARE_WRITE8_MEMBER(csilver_i8751_w);
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DECLARE_WRITE8_MEMBER(dec8_bank_w);
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void ghostb_bank_w(uint8_t data);
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DECLARE_WRITE8_MEMBER(csilver_control_w);
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@ -155,6 +154,7 @@ private:
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void gondo_mcu_to_main_w(uint8_t data);
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void shackled_mcu_to_main_w(uint8_t data);
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void srdarwin_mcu_to_main_w(uint8_t data);
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void csilver_mcu_to_main_w(uint8_t data);
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DECLARE_WRITE8_MEMBER(dec8_bg_data_w);
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DECLARE_READ8_MEMBER(dec8_bg_data_r);
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DECLARE_WRITE8_MEMBER(dec8_videoram_w);
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