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Diffstat (limited to 'src/devices/bus/c64/buscard.cpp')
-rw-r--r-- | src/devices/bus/c64/buscard.cpp | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/devices/bus/c64/buscard.cpp b/src/devices/bus/c64/buscard.cpp new file mode 100644 index 00000000000..68e15cb41f5 --- /dev/null +++ b/src/devices/bus/c64/buscard.cpp @@ -0,0 +1,174 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Batteries Included BusCard cartridge emulation + + Enable BASIC 4.0 with SYS 61000 + Disable BASIC 4.0 with SYS 61003 + +**********************************************************************/ + +#include "emu.h" +#include "buscard.h" + + + +//************************************************************************** +// MACROS/CONSTANTS +//************************************************************************** + +#define I8255_TAG "i8255" +#define CENTRONICS_TAG "centronics" +#define EXPANSION_TAG "exp" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +DEFINE_DEVICE_TYPE(C64_BUSCARD, buscard_t, "c64_buscard", "C64 BusCard cartridge") + + +//------------------------------------------------- +// ROM( buscard ) +//------------------------------------------------- + +ROM_START( buscard ) + ROM_REGION( 0x2000, "rom", 0 ) + ROM_LOAD( "buscardv0.9-tms2564.bin", 0x0000, 0x2000, CRC(175e8c96) SHA1(8fb4ba7e3d0b58dc01b66ef962955596f1b125b5) ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const tiny_rom_entry *buscard_t::device_rom_region() const +{ + return ROM_NAME( buscard ); +} + + +//------------------------------------------------- +// INPUT_PORTS( buscard ) +//------------------------------------------------- + +static INPUT_PORTS_START( buscard ) + PORT_START("SW") + PORT_DIPUNKNOWN_DIPLOC( 0x01, 0x01, "SW:1" ) + PORT_DIPUNKNOWN_DIPLOC( 0x02, 0x02, "SW:2" ) + PORT_DIPUNKNOWN_DIPLOC( 0x04, 0x04, "SW:3" ) + PORT_DIPUNKNOWN_DIPLOC( 0x08, 0x08, "SW:4" ) + PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x10, "SW:5" ) + PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x20, "SW:6" ) + PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x40, "SW:7" ) + PORT_DIPUNKNOWN_DIPLOC( 0x80, 0x80, "SW:8" ) +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor buscard_t::device_input_ports() const +{ + return INPUT_PORTS_NAME( buscard ); +} + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void buscard_t::device_add_mconfig(machine_config &config) +{ + I8255A(config, m_ppi, 0); + + IEEE488(config, m_bus, 0); + ieee488_slot_device::add_cbm_defaults(config, nullptr); + + CENTRONICS(config, m_centronics, centronics_devices, nullptr); + + C64_EXPANSION_SLOT(config, m_exp, DERIVED_CLOCK(1, 1), c64_expansion_cards, nullptr); + m_exp->set_passthrough(); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// buscard_t - constructor +//------------------------------------------------- + +buscard_t::buscard_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, C64_BUSCARD, tag, owner, clock), + device_c64_expansion_card_interface(mconfig, *this), + m_ppi(*this, I8255_TAG), + m_bus(*this, IEEE488_TAG), + m_centronics(*this, CENTRONICS_TAG), + m_exp(*this, EXPANSION_TAG) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void buscard_t::device_start() +{ +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void buscard_t::device_reset() +{ +} + + +//------------------------------------------------- +// c64_cd_r - cartridge data read +//------------------------------------------------- + +uint8_t buscard_t::c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) +{ + return m_exp->cd_r(offset, data, sphi2, ba, roml, romh, io1, io2); +} + + +//------------------------------------------------- +// c64_cd_w - cartridge data write +//------------------------------------------------- + +void buscard_t::c64_cd_w(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) +{ + m_exp->cd_w(offset, data, sphi2, ba, roml, romh, io1, io2); +} + + +//------------------------------------------------- +// c64_game_r - cartridge GAME read +//------------------------------------------------- + +int buscard_t::c64_game_r(offs_t offset, int sphi2, int ba, int rw) +{ + return m_exp->game_r(offset, sphi2, ba, rw, m_slot->hiram()); +} + + +//------------------------------------------------- +// c64_exrom_r - cartridge EXROM read +//------------------------------------------------- + +int buscard_t::c64_exrom_r(offs_t offset, int sphi2, int ba, int rw) +{ + return m_exp->exrom_r(offset, sphi2, ba, rw, m_slot->hiram()); +} |