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(MESS) c64: Fixed Magic Formel cartridge. [Curt Coder]
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Curt Coder
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1156254f57
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2777a10ec5
@ -6260,38 +6260,38 @@
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</part>
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</software>
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<software name="formel64" supported="no">
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<description>Formel 64</description>
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<software name="magicfrm">
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<description>Magic Formel (v1.1)</description>
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<year>1986</year>
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<publisher>Grewe Computertechnik</publisher>
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<part name="cart" interface="c64_cart">
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<feature name="slot" value="magic_formel" />
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<feature name="exrom" value="1" />
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<feature name="game" value="1" />
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<dataarea name="romh" size="0x10000">
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<dataarea name="romh" size="0x20000">
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<rom name="magic_formel_v1.1_1986_ori.bin" size="0x10000" crc="71dc4e30" sha1="329c4e73150e4520cc11924e220210cec3bf78f6" offset="0x0000" />
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</dataarea>
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<dataarea name="ram" size="0x2000"/>
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</part>
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</software>
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<software name="magicfor" cloneof="formel64" supported="no">
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<description>Magic Formel</description>
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<software name="magicfrm12" cloneof="magicfrm">
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<description>Magic Formel (v1.2)</description>
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<year>1986</year>
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<publisher>Grewe Computertechnik</publisher>
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<part name="cart" interface="c64_cart">
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<feature name="slot" value="magic_formel" />
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<feature name="exrom" value="1" />
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<feature name="game" value="1" />
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<dataarea name="romh" size="0x10000">
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<dataarea name="romh" size="0x20000">
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<rom name="magic_formel_v1.2_1986_ori.bin" size="0x10000" crc="dfc8b7f3" sha1="7c2e12ee2836157af9f811e1c9017bff542c8cfa" offset="0x0000" />
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</dataarea>
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<dataarea name="ram" size="0x2000"/>
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</part>
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</software>
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<software name="magicf20" cloneof="formel64" supported="no">
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<description>Magic Formel 2.0</description>
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<software name="magicfrm20" cloneof="magicfrm">
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<description>Magic Formel (v2.0)</description>
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<year>1987</year>
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<publisher>Grewe Computertechnik</publisher>
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<part name="cart" interface="c64_cart">
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@ -6300,7 +6300,7 @@
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<feature name="game" value="1" />
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<dataarea name="romh" size="0x20000">
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<rom name="magic_formel_v2.0_1987_1st_eprom.bin" size="0x10000" crc="030e0031" sha1="a78323a25fc9e93f6008669948c93afe2b14a63f" offset="0x00000" />
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<rom name="magic_formel_v2.0_1987_2nd_eprom.bin" size="0x8000" crc="5d5ce3e8" sha1="80db6efd099c66fccd0d6337226c3f786bed5b71" offset="0x18000" />
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<rom name="magic_formel_v2.0_1987_2nd_eprom.bin" size="0x8000" crc="5d5ce3e8" sha1="80db6efd099c66fccd0d6337226c3f786bed5b71" offset="0x10000" />
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</dataarea>
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<dataarea name="ram" size="0x2000"/>
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</part>
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@ -9,6 +9,14 @@
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**********************************************************************/
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/*
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TODO:
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- pia6821 port A DDR needs to reset to 0xff or this won't boot
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*/
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#include "magic_formel.h"
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@ -19,7 +27,6 @@
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#define MC6821_TAG "mc6821"
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#define PA4 (m_pb7_ff ? m_ram_oe : 0)
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//**************************************************************************
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@ -46,11 +53,8 @@ WRITE8_MEMBER( c64_magic_formel_cartridge_device::pia_pa_w )
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*/
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logerror("PA %02x\n",data);
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m_rom_bank = data & 0x0f;
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m_rom_oe = BIT(data, 3);
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m_ram_oe = BIT(data, 4);
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}
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@ -65,30 +69,31 @@ WRITE8_MEMBER( c64_magic_formel_cartridge_device::pia_pb_w )
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PB2 RAM A9
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PB3 RAM A8
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PB4 RAM A12
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PB5
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PB5 U9A clr
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PB6
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PB7 ROMH enable
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*/
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logerror("PB %02x\n",data);
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m_ram_bank = data & 0x1f;
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m_pb7 = BIT(data, 7);
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if (!m_pb7)
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if (!BIT(data, 5))
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{
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m_pb7_ff = 1;
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m_u9a = 0;
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}
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m_pb7 = BIT(data, 7);
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}
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WRITE_LINE_MEMBER( c64_magic_formel_cartridge_device::pia_cb2_w )
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{
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if (!state)
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{
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m_cb2_ff = 1;
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m_u9b = 1;
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}
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}
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//-------------------------------------------------
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// MACHINE_CONFIG_FRAGMENT( c64_magic_formel )
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//-------------------------------------------------
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@ -118,9 +123,9 @@ machine_config_constructor c64_magic_formel_cartridge_device::device_mconfig_add
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INPUT_CHANGED_MEMBER( c64_magic_formel_cartridge_device::freeze )
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{
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if (newval && (m_pb7_ff & m_cb2_ff))
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if (newval && (!m_u9a && !m_u9b))
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{
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m_cb2_ff = 0;
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m_u9b = 1;
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m_slot->nmi_w(ASSERT_LINE);
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}
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@ -167,11 +172,10 @@ c64_magic_formel_cartridge_device::c64_magic_formel_cartridge_device(const machi
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m_ram(*this, "ram"),
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m_rom_bank(0),
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m_ram_bank(0),
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m_pb7_ff(0),
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m_cb2_ff(0),
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m_rom_oe(0),
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m_ram_oe(0),
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m_pb7(1)
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m_pb7(1),
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m_u9a(1),
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m_u9b(1)
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{
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}
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@ -188,11 +192,10 @@ void c64_magic_formel_cartridge_device::device_start()
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// state saving
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save_item(NAME(m_rom_bank));
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save_item(NAME(m_ram_bank));
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save_item(NAME(m_pb7_ff));
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save_item(NAME(m_cb2_ff));
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save_item(NAME(m_rom_oe));
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save_item(NAME(m_ram_oe));
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save_item(NAME(m_pb7));
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save_item(NAME(m_u9a));
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save_item(NAME(m_u9b));
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}
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@ -204,11 +207,10 @@ void c64_magic_formel_cartridge_device::device_reset()
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{
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m_rom_bank = 0;
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m_ram_bank = 0;
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m_pb7_ff = 0;
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m_cb2_ff = 0;
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m_rom_oe = 0;
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m_ram_oe = 0;
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m_pb7 = 1;
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m_pb7 = 0;
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m_u9a = 1;
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m_u9b = 1;
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}
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@ -218,13 +220,12 @@ void c64_magic_formel_cartridge_device::device_reset()
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UINT8 c64_magic_formel_cartridge_device::c64_cd_r(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2)
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{
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if (!romh && !m_rom_oe)
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if (!romh)
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{
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UINT8 bank = m_pb7_ff ? m_rom_bank : 0;
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offs_t addr = (bank << 13) | (offset & 0x1fff);
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offs_t addr = (m_rom_bank << 13) | (offset & 0x1fff);
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data = m_romh[addr];
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}
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else if (!io1 && !PA4)
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else if (!io1 && !m_ram_oe)
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{
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offs_t addr = (m_ram_bank << 8) | (offset & 0xff);
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data = m_ram[addr];
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@ -240,20 +241,21 @@ UINT8 c64_magic_formel_cartridge_device::c64_cd_r(address_space &space, offs_t o
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void c64_magic_formel_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2)
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{
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if (!io1)
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if (!io1 && !m_ram_oe)
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{
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offs_t addr = (m_ram_bank << 8) | (offset & 0xff);
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m_ram[addr] = data;
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}
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else if (!io2 && !(m_cb2_ff & PA4))
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else if (!io2 && !(!m_u9b && m_ram_oe))
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{
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offs_t addr = (offset >> 6) & 0x03;
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UINT8 new_data = (BIT(data, 1) << 7) | (offset & 0x3f);
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m_pia->write(space, addr, new_data);
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}
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else if (offset == 0x0001)
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{
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m_pb7_ff = 0;
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m_u9a = 1;
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}
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}
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@ -264,5 +266,5 @@ void c64_magic_formel_cartridge_device::c64_cd_w(address_space &space, offs_t of
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int c64_magic_formel_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw)
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{
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return !(ba & rw & ((offset & 0xe000) == 0xe000) & !(m_pb7 & m_cb2_ff));
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return !(ba && rw && ((offset & 0xe000) == 0xe000) && !(!m_pb7 && !m_u9b));
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}
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@ -14,7 +14,6 @@
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#ifndef __MAGIC_FORMEL__
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#define __MAGIC_FORMEL__
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#include "emu.h"
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#include "exp.h"
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#include "machine/6821pia.h"
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@ -61,11 +60,10 @@ private:
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UINT8 m_rom_bank;
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UINT8 m_ram_bank;
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int m_pb7_ff;
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int m_cb2_ff;
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int m_rom_oe;
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int m_ram_oe;
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int m_pb7;
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int m_u9a;
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int m_u9b;
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};
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