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(MESS) c64: Implemented logic for PARTNER 64 cartridge. (nw)

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This commit is contained in:
Curt Coder 2013-09-21 21:20:33 +00:00
parent 0445857424
commit 67328a0ccd
3 changed files with 94 additions and 14 deletions
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4
hash/c64_cart.xml
View File

@ -6924,9 +6924,9 @@
<part name="cart" interface="c64_cart">
<feature name="slot" value="partner" />
<feature name="game" value="0" />
<feature name="exrom" value="0" />
<feature name="exrom" value="1" />
<dataarea name="roml" size="0x4000">
<dataarea name="romh" size="0x4000">
<rom name="timeworks c-64 ver 2-16-87" size="0x4000" status="nodump" offset="0" />
</dataarea>
</part>

96
src/mess/machine/c64/partner.c
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@ -43,9 +43,18 @@ const device_type C64_PARTNER = &device_creator<c64_partner_cartridge_device>;
// INPUT_PORTS( c64_partner )
//-------------------------------------------------
WRITE_LINE_MEMBER( c64_partner_cartridge_device::nmi_w )
{
if (!state && !m_a6 && !m_nmi)
{
m_slot->nmi_w(ASSERT_LINE);
m_nmi = 1;
}
}
static INPUT_PORTS_START( c64_partner )
PORT_START("RESET")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Reset") PORT_CODE(KEYCODE_F11) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF_OWNER, c64_expansion_slot_device, reset_w)
PORT_START("NMI")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("NMI") PORT_CODE(KEYCODE_F11) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF_OWNER, c64_partner_cartridge_device, nmi_w)
INPUT_PORTS_END
@ -70,7 +79,10 @@ ioport_constructor c64_partner_cartridge_device::device_input_ports() const
c64_partner_cartridge_device::c64_partner_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, C64_PARTNER, "C64 PARTNER 64 cartridge", tag, owner, clock, "c64_partner", __FILE__),
device_c64_expansion_card_interface(mconfig, *this)
device_c64_expansion_card_interface(mconfig, *this),
m_a0(1),
m_a6(1),
m_nmi(0)
{
}
@ -92,6 +104,14 @@ void c64_partner_cartridge_device::device_start()
void c64_partner_cartridge_device::device_reset()
{
m_a0 = 1;
m_a6 = 1;
if (m_nmi && m_a6)
{
m_slot->nmi_w(CLEAR_LINE);
m_nmi = 0;
}
}
@ -101,6 +121,30 @@ void c64_partner_cartridge_device::device_reset()
UINT8 c64_partner_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)
{
if (!io1)
{
data = m_romh[offset & 0x3fff];
}
if (m_nmi && (offset == 0xfffa || offset == 0xfffb))
{
m_a0 = 1;
}
if (m_a0 && BIT(offset, 15))
{
switch ((offset >> 13) & 0x03)
{
case 0: case 3:
data = m_romh[offset & 0x3fff];
break;
case 1:
data = m_ram[offset & 0x1fff];
break;
}
}
return data;
}
@ -111,16 +155,32 @@ UINT8 c64_partner_cartridge_device::c64_cd_r(address_space &space, offs_t offset
void c64_partner_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)
{
}
if (!io1)
{
m_a0 = BIT(offset, 0);
m_a6 = BIT(offset, 6);
if (m_nmi && m_a6)
{
m_slot->nmi_w(CLEAR_LINE);
m_nmi = 0;
}
}
//-------------------------------------------------
// c64_exrom_r - EXROM read
//-------------------------------------------------
if (m_a0 && BIT(offset, 15))
{
switch ((offset >> 13) & 0x03)
{
case 1:
m_ram[offset & 0x1fff] = data;
break;
}
}
int c64_partner_cartridge_device::c64_exrom_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_exrom;
if (m_nmi && (offset == 0xfffa || offset == 0xfffb))
{
m_a0 = 1;
}
}
@ -130,5 +190,19 @@ int c64_partner_cartridge_device::c64_exrom_r(offs_t offset, int sphi2, int ba,
int c64_partner_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_game;
int game = 1;
if (m_a0 && BIT(offset, 15))
{
switch ((offset >> 13) & 0x03)
{
case 0: case 1: case 3:
game = 0;
break;
}
}
// TODO if I/O1=0, GAME=0
return game;
}

8
src/mess/machine/c64/partner.h
View File

@ -33,6 +33,8 @@ public:
// optional information overrides
virtual ioport_constructor device_input_ports() const;
DECLARE_WRITE_LINE_MEMBER( nmi_w );
protected:
// device-level overrides
virtual void device_start();
@ -41,8 +43,12 @@ protected:
// device_c64_expansion_card_interface overrides
virtual UINT8 c64_cd_r(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2);
virtual void c64_cd_w(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2);
virtual int c64_exrom_r(offs_t offset, int sphi2, int ba, int rw);
virtual int c64_game_r(offs_t offset, int sphi2, int ba, int rw);
private:
int m_a0;
int m_a6;
int m_nmi;
};