// license:BSD-3-Clause // copyright-holders:Curt Coder /* TODO: - C1540 is not working currently - mos6560_port_r/w should respond at 0x1000-0x100f - VIC21 (built in 21K ram) */ #include "emu.h" #include "screen.h" #include "softlist.h" #include "speaker.h" #include "bus/cbmiec/cbmiec.h" #include "bus/pet/cass.h" #include "bus/vcs_ctrl/ctrl.h" #include "bus/vic20/exp.h" #include "bus/vic20/user.h" #include "cpu/m6502/m6510.h" #include "machine/6522via.h" #include "machine/cbm_snqk.h" #include "machine/ram.h" #include "sound/mos6560.h" #define M6502_TAG "ue10" #define M6522_1_TAG "uab3" #define M6522_2_TAG "uab1" #define VIC_TAG "ub7" #define IEC_TAG "iec" #define SCREEN_TAG "screen" #define CONTROL1_TAG "joy1" #define PET_USER_PORT_TAG "user" class vic20_state : public driver_device { public: vic20_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, M6502_TAG), m_via1(*this, M6522_1_TAG), m_via2(*this, M6522_2_TAG), m_vic(*this, VIC_TAG), m_iec(*this, CBM_IEC_TAG), m_joy(*this, CONTROL1_TAG), m_exp(*this, VIC20_EXPANSION_SLOT_TAG), m_user(*this, PET_USER_PORT_TAG), m_cassette(*this, PET_DATASSETTE_PORT_TAG), m_ram(*this, RAM_TAG), m_screen(*this, SCREEN_TAG), m_basic(*this, "basic"), m_kernal(*this, "kernal"), m_charom(*this, "charom"), m_color_ram(*this, "color_ram"), m_row(*this, "ROW%u", 0), m_restore(*this, "RESTORE"), m_lock(*this, "LOCK") { } void ntsc(machine_config &config); void pal(machine_config &config); protected: void vic20(machine_config &config, const char* softlist_filter); void add_clocked_devices(machine_config &config, uint32_t clock); private: required_device m_maincpu; required_device m_via1; required_device m_via2; required_device m_vic; required_device m_iec; required_device m_joy; required_device m_exp; required_device m_user; required_device m_cassette; required_device m_ram; required_device m_screen; required_region_ptr m_basic; required_region_ptr m_kernal; required_region_ptr m_charom; required_shared_ptr m_color_ram; required_ioport_array<8> m_row; required_ioport m_restore; required_ioport m_lock; virtual void machine_start() override; virtual void machine_reset() override; DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_READ8_MEMBER( vic_videoram_r ); DECLARE_WRITE_LINE_MEMBER( write_light_pen ); DECLARE_WRITE_LINE_MEMBER( write_user_joy0 ); DECLARE_WRITE_LINE_MEMBER( write_user_joy1 ); DECLARE_WRITE_LINE_MEMBER( write_user_joy2 ); DECLARE_WRITE_LINE_MEMBER( write_user_light_pen ); DECLARE_WRITE_LINE_MEMBER( write_user_cassette_switch ); DECLARE_READ8_MEMBER( via1_pa_r ); DECLARE_WRITE8_MEMBER( via1_pa_w ); DECLARE_WRITE8_MEMBER( via1_pb_w ); DECLARE_READ8_MEMBER( via2_pa_r ); DECLARE_READ8_MEMBER( via2_pb_r ); DECLARE_WRITE8_MEMBER( via2_pb_w ); DECLARE_WRITE_LINE_MEMBER( via2_ca2_w ); DECLARE_WRITE_LINE_MEMBER( via2_cb2_w ); DECLARE_WRITE_LINE_MEMBER( exp_reset_w ); DECLARE_QUICKLOAD_LOAD_MEMBER(quickload_vc20); // keyboard state int m_key_col; int m_light_pen; int m_user_joy0; int m_user_joy1; int m_user_joy2; int m_user_light_pen; int m_user_cassette_switch; enum { BLK0 = 0, BLK1, BLK2, BLK3, BLK4, BLK5, BLK6, BLK7 }; enum { RAM0 = 0, RAM1, RAM2, RAM3, RAM4, RAM5, RAM6, RAM7 }; enum { IO0 = 4, COLOR = 5, IO2 = 6, IO3 = 7 }; void vic20_mem(address_map &map); void vic_colorram_map(address_map &map); void vic_videoram_map(address_map &map); }; QUICKLOAD_LOAD_MEMBER(vic20_state::quickload_vc20) { return general_cbm_loadsnap(image, file_type, quickload_size, m_maincpu->space(AS_PROGRAM), 0, cbm_quick_sethiaddress); } //************************************************************************** // MEMORY MANAGEMENT //************************************************************************** //------------------------------------------------- // read - //------------------------------------------------- READ8_MEMBER( vic20_state::read ) { uint8_t data = m_vic->bus_r(); int ram1 = 1, ram2 = 1, ram3 = 1; int blk1 = 1, blk2 = 1, blk3 = 1, blk5 = 1; int io2 = 1, io3 = 1; switch ((offset >> 13) & 0x07) { case BLK0: switch ((offset >> 10) & 0x07) { case RAM0: data = m_ram->pointer()[offset & 0x3ff]; break; case RAM1: ram1 = 0; break; case RAM2: ram2 = 0; break; case RAM3: ram3 = 0; break; default: data = m_ram->pointer()[0x400 + (offset & 0xfff)]; break; } break; case BLK1: blk1 = 0; break; case BLK2: blk2 = 0; break; case BLK3: blk3 = 0; break; case BLK4: switch ((offset >> 10) & 0x07) { default: data = m_charom[offset & 0xfff]; break; case IO0: if (BIT(offset, 4)) { data = m_via1->read(offset & 0x0f); } else if (BIT(offset, 5)) { data = m_via2->read(offset & 0x0f); } else if (offset >= 0x9000 && offset < 0x9010) { data = m_vic->read(space, offset & 0x0f); } break; case COLOR: data = m_color_ram[offset & 0x3ff]; break; case IO2: io2 = 0; break; case IO3: io3 = 0; break; } break; case BLK5: blk5 = 0; break; case BLK6: data = m_basic[offset & 0x1fff]; break; case BLK7: data = m_kernal[offset & 0x1fff]; break; } return m_exp->cd_r(offset & 0x1fff, data, ram1, ram2, ram3, blk1, blk2, blk3, blk5, io2, io3); } //------------------------------------------------- // write - //------------------------------------------------- WRITE8_MEMBER( vic20_state::write ) { int ram1 = 1, ram2 = 1, ram3 = 1; int blk1 = 1, blk2 = 1, blk3 = 1, blk5 = 1; int io2 = 1, io3 = 1; switch ((offset >> 13) & 0x07) { case BLK0: switch ((offset >> 10) & 0x07) { case RAM0: m_ram->pointer()[offset] = data; break; case RAM1: ram1 = 0; break; case RAM2: ram2 = 0; break; case RAM3: ram3 = 0; break; default: m_ram->pointer()[0x400 + (offset & 0xfff)] = data; break; } break; case BLK1: blk1 = 0; break; case BLK2: blk2 = 0; break; case BLK3: blk3 = 0; break; case BLK4: switch ((offset >> 10) & 0x07) { case IO0: if (BIT(offset, 4)) { m_via1->write(offset & 0x0f, data); } else if (BIT(offset, 5)) { m_via2->write(offset & 0x0f, data); } else if (offset >= 0x9000 && offset < 0x9010) { m_vic->write(space, offset & 0x0f, data); } break; case COLOR: m_color_ram[offset & 0x3ff] = data & 0x0f; break; case IO2: io2 = 0; break; case IO3: io3 = 0; break; } break; case BLK5: blk5 = 0; break; } m_exp->cd_w(offset & 0x1fff, data, ram1, ram2, ram3, blk1, blk2, blk3, blk5, io2, io3); } //------------------------------------------------- // vic_videoram_r - //------------------------------------------------- READ8_MEMBER( vic20_state::vic_videoram_r ) { int ram1 = 1, ram2 = 1, ram3 = 1; int blk1 = 1, blk2 = 1, blk3 = 1, blk5 = 1; int io2 = 1, io3 = 1; uint8_t data = 0; if (BIT(offset, 13)) { switch ((offset >> 10) & 0x07) { case RAM0: data = m_ram->pointer()[offset & 0x3ff]; break; case RAM1: ram1 = 0; break; case RAM2: ram2 = 0; break; case RAM3: ram3 = 0; break; default: data = m_ram->pointer()[0x400 + (offset & 0xfff)]; break; } } else { data = m_charom[offset & 0xfff]; } return m_exp->cd_r(offset & 0x1fff, data, ram1, ram2, ram3, blk1, blk2, blk3, blk5, io2, io3); } //************************************************************************** // ADDRESS MAPS //************************************************************************** //------------------------------------------------- // ADDRESS_MAP( vic20_mem ) //------------------------------------------------- void vic20_state::vic20_mem(address_map &map) { map(0x0000, 0xffff).rw(FUNC(vic20_state::read), FUNC(vic20_state::write)); } //------------------------------------------------- // ADDRESS_MAP( vic_videoram_map ) //------------------------------------------------- void vic20_state::vic_videoram_map(address_map &map) { map(0x0000, 0x3fff).r(FUNC(vic20_state::vic_videoram_r)); } //------------------------------------------------- // ADDRESS_MAP( vic_colorram_map ) //------------------------------------------------- void vic20_state::vic_colorram_map(address_map &map) { map(0x000, 0x3ff).ram().share("color_ram"); } //************************************************************************** // INPUT PORTS //************************************************************************** //------------------------------------------------- // INPUT_PORTS( vic20 ) //------------------------------------------------- static INPUT_PORTS_START( vic20 ) PORT_START( "ROW0" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Del Inst") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR(0xA3) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('+') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_START( "ROW1" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('*') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xE2\x86\x90") PORT_CODE(KEYCODE_TILDE) PORT_CHAR(0x2190) PORT_START( "ROW2" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Crsr Right Left") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(';') PORT_CHAR(']') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_SHIFT_2) PORT_START( "ROW3" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Crsr Down Up") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Shift (Left)") PORT_CODE(KEYCODE_LSHIFT) PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Stop Run") PORT_CODE(KEYCODE_HOME) PORT_START( "ROW4" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Shift (Right)") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_START( "ROW5" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_CHAR(UCHAR_MAMEKEY(F4)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('=') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(':') PORT_CHAR('[') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CBM") PORT_CODE(KEYCODE_LCONTROL) PORT_START( "ROW6" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_CHAR(UCHAR_MAMEKEY(F6)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xE2\x86\x91 Pi") PORT_CODE(KEYCODE_DEL) PORT_CHAR(0x2191) PORT_CHAR(0x03C0) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_START( "ROW7" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F7)) PORT_CHAR(UCHAR_MAMEKEY(F8)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Home Clr") PORT_CODE(KEYCODE_INSERT) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('-') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_START( "RESTORE" ) PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RESTORE") PORT_CODE(KEYCODE_PRTSCR) PORT_WRITE_LINE_DEVICE_MEMBER(M6522_1_TAG, via6522_device, write_ca1) PORT_START( "LOCK" ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_BIT( 0x7f, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END //------------------------------------------------- // INPUT_PORTS( vic1001 ) //------------------------------------------------- static INPUT_PORTS_START( vic1001 ) PORT_INCLUDE( vic20 ) PORT_MODIFY( "ROW0" ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR(0xA5) INPUT_PORTS_END //------------------------------------------------- // INPUT_PORTS( vic20s ) //------------------------------------------------- static INPUT_PORTS_START( vic20s ) PORT_INCLUDE( vic20 ) PORT_MODIFY( "ROW0" ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR(':') PORT_CHAR('*') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_MODIFY( "ROW1" ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('@') PORT_MODIFY( "ROW2" ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(0x00C4) PORT_MODIFY( "ROW5" ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR(';') PORT_CHAR('+') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(0x00D6) PORT_MODIFY( "ROW6" ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(0x00C5) PORT_MODIFY( "ROW7" ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') INPUT_PORTS_END //************************************************************************** // DEVICE CONFIGURATION //************************************************************************** READ8_MEMBER( vic20_state::via1_pa_r ) { /* bit description PA0 SERIAL CLK IN PA1 SERIAL DATA IN PA2 JOY 0 (UP) PA3 JOY 1 (DOWN) PA4 JOY 2 (LEFT) PA5 LITE PEN (FIRE) PA6 CASS SWITCH PA7 */ uint8_t data = 0; // serial clock in data |= m_iec->clk_r(); // serial data in data |= m_iec->data_r() << 1; // joystick / user port uint8_t joy = m_joy->read_joy(); data |= (m_user_joy0 && BIT(joy, 0)) << 2; data |= (m_user_joy1 && BIT(joy, 1)) << 3; data |= (m_user_joy2 && BIT(joy, 2)) << 4; data |= (m_user_light_pen && BIT(joy, 5)) << 5; // cassette switch data |= (m_user_cassette_switch && m_cassette->sense_r()) << 6; return data; } WRITE8_MEMBER( vic20_state::via1_pa_w ) { /* bit description PA0 PA1 PA2 PA3 PA4 PA5 LITE PEN (FIRE) PA6 PA7 SERIAL ATN OUT */ // light pen strobe m_user->write_7(BIT(data, 5)); m_vic->lp_w(BIT(data, 5)); // serial attention out m_user->write_9(!BIT(data, 7)); m_iec->host_atn_w(!BIT(data, 7)); } WRITE8_MEMBER( vic20_state::via1_pb_w ) { m_user->write_c((data>>0)&1); m_user->write_d((data>>1)&1); m_user->write_e((data>>2)&1); m_user->write_f((data>>3)&1); m_user->write_h((data>>4)&1); m_user->write_j((data>>5)&1); m_user->write_k((data>>6)&1); m_user->write_l((data>>7)&1); } READ8_MEMBER( vic20_state::via2_pa_r ) { /* bit description PA0 ROW 0 PA1 ROW 1 PA2 ROW 2 PA3 ROW 3 PA4 ROW 4 PA5 ROW 5 PA6 ROW 6 PA7 ROW 7 */ uint8_t data = 0xff; for (int i = 0; i < 8; i++) { if (!BIT(m_key_col, i)) data &= m_row[i]->read(); } return data; } READ8_MEMBER( vic20_state::via2_pb_r ) { /* bit description PB0 COL 0 PB1 COL 1 PB2 COL 2 PB3 COL 3 PB4 COL 4 PB5 COL 5 PB6 COL 6 PB7 COL 7, JOY 3 (RIGHT) */ uint8_t data = 0xff; // joystick uint8_t joy = m_joy->read_joy(); data &= BIT(joy, 3) << 7; return data; } WRITE8_MEMBER( vic20_state::via2_pb_w ) { /* bit description PB0 COL 0 PB1 COL 1 PB2 COL 2 PB3 COL 3, CASS WRITE PB4 COL 4 PB5 COL 5 PB6 COL 6 PB7 COL 7 */ // cassette write m_cassette->write(BIT(data, 3)); // keyboard column m_key_col = data; } WRITE_LINE_MEMBER( vic20_state::via2_ca2_w ) { // serial clock out m_iec->host_clk_w(!state); } WRITE_LINE_MEMBER( vic20_state::via2_cb2_w ) { // serial data out m_iec->host_data_w(!state); } //------------------------------------------------- // VIC20_EXPANSION_INTERFACE( expansion_intf ) //------------------------------------------------- WRITE_LINE_MEMBER( vic20_state::exp_reset_w ) { if (!state) { machine_reset(); } } //************************************************************************** // MACHINE INITIALIZATION //************************************************************************** //------------------------------------------------- // MACHINE_START( vic20 ) //------------------------------------------------- void vic20_state::machine_start() { // initialize memory uint8_t data = 0xff; for (offs_t offset = 0; offset < m_ram->size(); offset++) { m_ram->pointer()[offset] = data; if (!(offset % 64)) data ^= 0xff; } // state saving save_item(NAME(m_key_col)); save_item(NAME(m_light_pen)); save_item(NAME(m_user_joy0)); save_item(NAME(m_user_joy1)); save_item(NAME(m_user_joy2)); save_item(NAME(m_user_light_pen)); save_item(NAME(m_user_cassette_switch)); } void vic20_state::machine_reset() { m_maincpu->reset(); m_vic->reset(); m_via1->reset(); m_via2->reset(); m_iec->reset(); m_exp->reset(); m_user->write_3(0); m_user->write_3(1); } WRITE_LINE_MEMBER(vic20_state::write_user_joy0) { m_user_joy0 = state; } WRITE_LINE_MEMBER(vic20_state::write_user_joy1) { m_user_joy1 = state; } WRITE_LINE_MEMBER(vic20_state::write_user_joy2) { m_user_joy2 = state; } WRITE_LINE_MEMBER(vic20_state::write_light_pen) { m_light_pen = state; m_vic->lp_w(m_light_pen && m_user_light_pen); } WRITE_LINE_MEMBER(vic20_state::write_user_light_pen) { m_user_light_pen = state; m_vic->lp_w(m_light_pen && m_user_light_pen); } WRITE_LINE_MEMBER(vic20_state::write_user_cassette_switch) { m_user_cassette_switch = state; } //************************************************************************** // MACHINE DRIVERS //************************************************************************** void vic20_state::vic20(machine_config &config, const char* softlist_filter) { SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); m_screen->set_screen_update(VIC_TAG, FUNC(mos6560_device::screen_update)); m_vic->set_screen(SCREEN_TAG); m_vic->set_addrmap(0, &vic20_state::vic_videoram_map); m_vic->set_addrmap(1, &vic20_state::vic_colorram_map); m_vic->potx_rd_callback().set(m_joy, FUNC(vcs_control_port_device::pot_x_r)); m_vic->poty_rd_callback().set(m_joy, FUNC(vcs_control_port_device::pot_y_r)); m_vic->add_route(ALL_OUTPUTS, "mono", 0.25); PET_DATASSETTE_PORT(config, m_cassette, 0); cbm_datassette_devices(*m_cassette); m_cassette->set_default_option("c1530"); m_cassette->read_handler().set(m_via2, FUNC(via6522_device::write_ca1)); cbm_iec_slot_device::add(config, m_iec, "c1541"); m_iec->srq_callback().set(m_via2, FUNC(via6522_device::write_cb1)); VCS_CONTROL_PORT(config, m_joy, 0); vcs_control_port_devices(*m_joy); m_joy->set_default_option("joy"); m_joy->trigger_wr_callback().set(FUNC(vic20_state::write_light_pen)); PET_USER_PORT(config, m_user, vic20_user_port_cards, nullptr); m_user->p3_handler().set(FUNC(vic20_state::exp_reset_w)); m_user->p4_handler().set(FUNC(vic20_state::write_user_joy0)); m_user->p5_handler().set(FUNC(vic20_state::write_user_joy1)); m_user->p6_handler().set(FUNC(vic20_state::write_user_joy2)); m_user->p7_handler().set(FUNC(vic20_state::write_user_light_pen)); m_user->p8_handler().set(FUNC(vic20_state::write_user_cassette_switch)); m_user->pb_handler().set(m_via1, FUNC(via6522_device::write_cb1)); m_user->pc_handler().set(m_via1, FUNC(via6522_device::write_pb0)); m_user->pd_handler().set(m_via1, FUNC(via6522_device::write_pb1)); m_user->pe_handler().set(m_via1, FUNC(via6522_device::write_pb2)); m_user->pf_handler().set(m_via1, FUNC(via6522_device::write_pb3)); m_user->ph_handler().set(m_via1, FUNC(via6522_device::write_pb4)); m_user->pj_handler().set(m_via1, FUNC(via6522_device::write_pb5)); m_user->pk_handler().set(m_via1, FUNC(via6522_device::write_pb6)); m_user->pl_handler().set(m_via1, FUNC(via6522_device::write_pb7)); m_user->pm_handler().set(m_via1, FUNC(via6522_device::write_cb2)); QUICKLOAD(config, "quickload", "p00,prg", CBM_QUICKLOAD_DELAY).set_load_callback(FUNC(vic20_state::quickload_vc20)); SOFTWARE_LIST(config, "cart_list").set_original("vic1001_cart").set_filter(softlist_filter); SOFTWARE_LIST(config, "cass_list").set_original("vic1001_cass").set_filter(softlist_filter); SOFTWARE_LIST(config, "flop_list").set_original("vic1001_flop").set_filter(softlist_filter); RAM(config, m_ram); m_ram->set_default_size("5K"); } void vic20_state::add_clocked_devices(machine_config &config, uint32_t clock) { // basic machine hardware M6502(config, m_maincpu, clock); m_maincpu->set_addrmap(AS_PROGRAM, &vic20_state::vic20_mem); VIA6522(config, m_via1, clock); m_via1->readpa_handler().set(FUNC(vic20_state::via1_pa_r)); m_via1->writepa_handler().set(FUNC(vic20_state::via1_pa_w)); m_via1->writepb_handler().set(FUNC(vic20_state::via1_pb_w)); m_via1->cb1_handler().set(m_user, FUNC(pet_user_port_device::write_b)); m_via1->ca2_handler().set(m_cassette, FUNC(pet_datassette_port_device::motor_w)); m_via1->cb2_handler().set(m_user, FUNC(pet_user_port_device::write_m)); m_via1->irq_handler().set_inputline(m_maincpu, M6502_NMI_LINE); VIA6522(config, m_via2, clock); m_via2->readpa_handler().set(FUNC(vic20_state::via2_pa_r)); m_via2->readpb_handler().set(FUNC(vic20_state::via2_pb_r)); m_via2->writepb_handler().set(FUNC(vic20_state::via2_pb_w)); m_via2->ca2_handler().set(FUNC(vic20_state::via2_ca2_w)); m_via2->cb2_handler().set(FUNC(vic20_state::via2_cb2_w)); m_via2->irq_handler().set_inputline(m_maincpu, M6502_IRQ_LINE); // video/sound hardware SPEAKER(config, "mono").front_center(); // devices VIC20_EXPANSION_SLOT(config, m_exp, clock, vic20_expansion_cards, nullptr); m_exp->irq_wr_callback().set_inputline(m_maincpu, M6502_IRQ_LINE); m_exp->nmi_wr_callback().set_inputline(m_maincpu, M6502_NMI_LINE); m_exp->res_wr_callback().set(FUNC(vic20_state::exp_reset_w)); } void vic20_state::ntsc(machine_config &config) { add_clocked_devices(config, MOS6560_CLOCK); MOS6560(config, m_vic, MOS6560_CLOCK); vic20(config, "NTSC"); m_screen->set_refresh_hz(MOS6560_VRETRACERATE); m_screen->set_size((MOS6560_XSIZE + 7) & ~7, MOS6560_YSIZE); m_screen->set_visarea(MOS6560_MAME_XPOS, MOS6560_MAME_XPOS + MOS6560_MAME_XSIZE - 1, MOS6560_MAME_YPOS, MOS6560_MAME_YPOS + MOS6560_MAME_YSIZE - 1); } void vic20_state::pal(machine_config &config) { add_clocked_devices(config, MOS6561_CLOCK); MOS6561(config, m_vic, MOS6561_CLOCK); vic20(config, "PAL"); m_screen->set_refresh_hz(MOS6561_VRETRACERATE); m_screen->set_size((MOS6561_XSIZE + 7) & ~7, MOS6561_YSIZE); m_screen->set_visarea(MOS6561_MAME_XPOS, MOS6561_MAME_XPOS + MOS6561_MAME_XSIZE - 1, MOS6561_MAME_YPOS, MOS6561_MAME_YPOS + MOS6561_MAME_YSIZE - 1); } //************************************************************************** // ROM DEFINITIONS //************************************************************************** //------------------------------------------------- // ROM( vic1001 ) //------------------------------------------------- ROM_START( vic1001 ) ROM_REGION( 0x2000, "basic", 0 ) ROM_LOAD( "901486-01", 0x0000, 0x2000, CRC(db4c43c1) SHA1(587d1e90950675ab6b12d91248a3f0d640d02e8d) ) ROM_REGION( 0x2000, "kernal", 0 ) ROM_LOAD( "901486-02", 0x0000, 0x2000, CRC(336900d7) SHA1(c9ead45e6674d1042ca6199160e8583c23aeac22) ) ROM_REGION( 0x1000, "charom", 0 ) ROM_LOAD( "901460-02", 0x0000, 0x1000, CRC(fcfd8a4b) SHA1(dae61ac03065aa2904af5c123ce821855898c555) ) ROM_END //------------------------------------------------- // ROM( vic20 ) //------------------------------------------------- ROM_START( vic20 ) ROM_REGION( 0x2000, "basic", 0 ) ROM_LOAD( "901486-01.ue11", 0x0000, 0x2000, CRC(db4c43c1) SHA1(587d1e90950675ab6b12d91248a3f0d640d02e8d) ) ROM_REGION( 0x2000, "kernal", 0 ) ROM_SYSTEM_BIOS( 0, "cbm", "Original" ) ROMX_LOAD( "901486-06.ue12", 0x0000, 0x2000, CRC(e5e7c174) SHA1(06de7ec017a5e78bd6746d89c2ecebb646efeb19), ROM_BIOS(0) ) ROM_SYSTEM_BIOS( 1, "jiffydos", "JiffyDOS" ) ROMX_LOAD( "jiffydos vic-20 ntsc.ue12", 0x0000, 0x2000, CRC(683a757f) SHA1(83fb83e97b5a840311dbf7e1fe56fe828f41936d), ROM_BIOS(1) ) ROM_REGION( 0x1000, "charom", 0 ) ROM_LOAD( "901460-03.ud7", 0x0000, 0x1000, CRC(83e032a6) SHA1(4fd85ab6647ee2ac7ba40f729323f2472d35b9b4) ) ROM_END //------------------------------------------------- // ROM( vic20p ) //------------------------------------------------- ROM_START( vic20p ) ROM_REGION( 0x2000, "basic", 0 ) ROM_LOAD( "901486-01.ue11", 0x0000, 0x2000, CRC(db4c43c1) SHA1(587d1e90950675ab6b12d91248a3f0d640d02e8d) ) ROM_REGION( 0x2000, "kernal", 0 ) ROM_SYSTEM_BIOS( 0, "cbm", "Original" ) ROMX_LOAD( "901486-07.ue12", 0x0000, 0x2000, CRC(4be07cb4) SHA1(ce0137ed69f003a299f43538fa9eee27898e621e), ROM_BIOS(0) ) ROM_SYSTEM_BIOS( 1, "jiffydos", "JiffyDOS" ) ROMX_LOAD( "jiffydos vic-20 pal.ue12", 0x0000, 0x2000, CRC(705e7810) SHA1(5a03623a4b855531b8bffd756f701306f128be2d), ROM_BIOS(1) ) ROM_REGION( 0x1000, "charom", 0 ) ROM_LOAD( "901460-03.ud7", 0x0000, 0x1000, CRC(83e032a6) SHA1(4fd85ab6647ee2ac7ba40f729323f2472d35b9b4) ) ROM_END //------------------------------------------------- // ROM( vic20_se ) //------------------------------------------------- ROM_START( vic20_se ) ROM_REGION( 0x2000, "basic", 0 ) ROM_LOAD( "901486-01.ue11", 0x0000, 0x2000, CRC(db4c43c1) SHA1(587d1e90950675ab6b12d91248a3f0d640d02e8d) ) ROM_REGION( 0x2000, "kernal", 0 ) ROM_LOAD( "nec22081.206", 0x0000, 0x2000, CRC(b2a60662) SHA1(cb3e2f6e661ea7f567977751846ce9ad524651a3) ) ROM_REGION( 0x1000, "charom", 0 ) ROM_LOAD( "nec22101.207", 0x0000, 0x1000, CRC(d808551d) SHA1(f403f0b0ce5922bd61bbd768bdd6f0b38e648c9f) ) ROM_END //************************************************************************** // GAME DRIVERS //************************************************************************** // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1980, vic1001, 0, 0, ntsc, vic1001, vic20_state, empty_init, "Commodore Business Machines", "VIC-1001 (Japan)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) COMP( 1981, vic20, vic1001, 0, ntsc, vic20, vic20_state, empty_init, "Commodore Business Machines", "VIC-20 (NTSC)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) COMP( 1981, vic20p, vic1001, 0, pal, vic20, vic20_state, empty_init, "Commodore Business Machines", "VIC-20 / VC-20 (PAL)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) COMP( 1981, vic20_se, vic1001, 0, pal, vic20s, vic20_state, empty_init, "Commodore Business Machines", "VIC-20 (Sweden/Finland)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )