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(MESS) c64: Triton Quick Disk WIP. (nw)

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This commit is contained in:
Curt Coder 2013-10-14 18:01:59 +00:00
parent 98652587d8
commit d77a52f5e4
3 changed files with 118 additions and 9 deletions
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3
hash/c64_cart.xml
View File

@ -84,10 +84,11 @@
</part>
</software>
<software name="tdos12" supported="no">
<software name="tdos12" supported="partial">
<description>Triton QD TDOS 1.2</description>
<year>198?</year>
<publisher>Radofin</publisher>
<info name="usage" value="Enter 'SYS 32768' to run" />
<part name="cart" interface="c64_cart">
<feature name="slot" value="tdos" />

120
src/mess/machine/c64/tdos.c
View File

@ -43,13 +43,27 @@
|==========================================|
ROM - Hitachi HN482764G 8Kx8 EPROM "TDOS 1.2"
ULA - Ferranti ULA5RB073E1 XZ-2085-1 custom (?)
ULA - Ferranti ULA5RB073E1 XZ-2085-1 40-pin custom ULA
SSDA - Motorola MC68A52P SSDA
CN1 - C64 expansion connector (pass-thru)
CN2,3 - 19x1 flat ribbon cable to other PCB
CN4 - 9 wires to 3" drive
SW1 - cartridge on/off switch
Drive cable pinout
------------------
1 WP
2 WD
3 WG
4 MO
5 RD
6 RY
7 MS
8 RS
9 +5V
10 GND
*/
#include "tdos.h"
@ -82,8 +96,8 @@ static MC6852_INTERFACE( ssda_intf )
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_LINE_GND,
DEVCB_LINE_GND,
DEVCB_NULL,
DEVCB_NULL
};
@ -111,6 +125,28 @@ machine_config_constructor c64_tdos_cartridge_device::device_mconfig_additions()
}
//-------------------------------------------------
// INPUT_PORTS( c64_tdos )
//-------------------------------------------------
static INPUT_PORTS_START( c64_tdos )
PORT_START("SW1")
PORT_DIPNAME( 0x01, 0x01, "Enabled" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x01, DEF_STR( On ) )
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor c64_tdos_cartridge_device::device_input_ports() const
{
return INPUT_PORTS_NAME( c64_tdos );
}
//**************************************************************************
// LIVE DEVICE
@ -124,7 +160,8 @@ c64_tdos_cartridge_device::c64_tdos_cartridge_device(const machine_config &mconf
device_t(mconfig, C64_TDOS, "C64 TDOS cartridge", tag, owner, clock, "c64_tdos", __FILE__),
device_c64_expansion_card_interface(mconfig, *this),
m_ssda(*this, MC68A52P_TAG),
m_exp(*this, C64_EXPANSION_SLOT_TAG)
m_exp(*this, C64_EXPANSION_SLOT_TAG),
m_sw1(*this, "SW1")
{
}
@ -144,6 +181,11 @@ void c64_tdos_cartridge_device::device_start()
void c64_tdos_cartridge_device::device_reset()
{
m_ssda->reset();
//m_ula->reset();
//flip-flop reset
m_enabled = m_sw1->read();
}
@ -155,7 +197,40 @@ UINT8 c64_tdos_cartridge_device::c64_cd_r(address_space &space, offs_t offset, U
{
data = m_exp->cd_r(space, offset, data, sphi2, ba, roml, romh, io1, io2);
// TODO
if (m_enabled && !roml)
{
data = m_roml[offset & 0x1fff];
}
if (m_enabled && !io2)
{
switch (offset >> 1)
{
case 0:
data = m_ssda->read(space, offset & 0x01);
break;
case 1:
break;
case 2:
/*
bit description
0
1
2
3
4
5 drive MS
6 drive WP
7 drive RY
*/
break;
}
}
return data;
}
@ -167,8 +242,37 @@ UINT8 c64_tdos_cartridge_device::c64_cd_r(address_space &space, offs_t offset, U
void c64_tdos_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)
{
// TODO
m_exp->cd_w(space, offset, data, sphi2, ba, roml, romh, io1, io2);
if (m_enabled && !io2)
{
switch (offset >> 1)
{
case 0:
m_ssda->write(space, offset & 0x01, data);
break;
case 1:
/*
bit description
0
1
2
3
4
5 ULA pin 8, inverted
6 drive MO
7 ULA pin 15
*/
break;
case 2:
break;
}
}
}
@ -178,7 +282,7 @@ void c64_tdos_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UI
int c64_tdos_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_exp->game_r(offset, sphi2, ba, rw, m_slot->hiram());
return m_enabled ? 1 : m_exp->game_r(offset, sphi2, ba, rw, m_slot->hiram());
}
@ -188,5 +292,5 @@ int c64_tdos_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int
int c64_tdos_cartridge_device::c64_exrom_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_exp->exrom_r(offset, sphi2, ba, rw, m_slot->hiram());
return m_enabled ? 0 : m_exp->exrom_r(offset, sphi2, ba, rw, m_slot->hiram());
}

4
src/mess/machine/c64/tdos.h
View File

@ -33,6 +33,7 @@ public:
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const;
virtual ioport_constructor device_input_ports() const;
protected:
// device-level overrides
@ -48,6 +49,9 @@ protected:
private:
required_device<mc6852_device> m_ssda;
required_device<c64_expansion_slot_device> m_exp;
required_ioport m_sw1;
bool m_enabled;
};