// 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 "includes/vic20.h"
QUICKLOAD_LOAD_MEMBER( vic20_state, cbm_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 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->base()[offset & 0xfff];
break;
case IO0:
if (BIT(offset, 4))
{
data = m_via1->read(space, offset & 0x0f);
}
else if (BIT(offset, 5))
{
data = m_via2->read(space, 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->base()[offset & 0x1fff];
break;
case BLK7:
data = m_kernal->base()[offset & 0x1fff];
break;
}
return m_exp->cd_r(space, 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(space, offset & 0x0f, data);
}
else if (BIT(offset, 5))
{
m_via2->write(space, 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(space, 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 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->base()[offset & 0xfff];
}
return m_exp->cd_r(space, offset & 0x1fff, data, ram1, ram2, ram3, blk1, blk2, blk3, blk5, io2, io3);
}
//**************************************************************************
// ADDRESS MAPS
//**************************************************************************
//-------------------------------------------------
// ADDRESS_MAP( vic20_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( vic20_mem, AS_PROGRAM, 8, vic20_state )
AM_RANGE(0x0000, 0xffff) AM_READWRITE(read, write)
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( vic_videoram_map )
//-------------------------------------------------
static ADDRESS_MAP_START( vic_videoram_map, AS_0, 8, vic20_state )
AM_RANGE(0x0000, 0x3fff) AM_READ(vic_videoram_r)
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( vic_colorram_map )
//-------------------------------------------------
static ADDRESS_MAP_START( vic_colorram_map, AS_1, 8, vic20_state )
AM_RANGE(0x000, 0x3ff) AM_RAM AM_SHARE("color_ram")
ADDRESS_MAP_END
//**************************************************************************
// 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('\xA3')
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('\xA5')
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 data = 0;
// serial clock in
data |= m_iec->clk_r();
// serial data in
data |= m_iec->data_r() << 1;
// joystick / user port
UINT8 joy = m_joy->joy_r();
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->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 data = 0xff;
if (!BIT(m_key_col, 0)) data &= m_row0->read();
if (!BIT(m_key_col, 1)) data &= m_row1->read();
if (!BIT(m_key_col, 2)) data &= m_row2->read();
if (!BIT(m_key_col, 3)) data &= m_row3->read();
if (!BIT(m_key_col, 4)) data &= m_row4->read();
if (!BIT(m_key_col, 5)) data &= m_row5->read();
if (!BIT(m_key_col, 6)) data &= m_row6->read();
if (!BIT(m_key_col, 7)) data &= m_row7->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 data = 0xff;
// joystick
UINT8 joy = m_joy->joy_r();
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->clk_w(!state);
}
WRITE_LINE_MEMBER( vic20_state::via2_cb2_w )
{
// serial data out
m_iec->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 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
//**************************************************************************
//-------------------------------------------------
// MACHINE_CONFIG( vic20_common )
//-------------------------------------------------
static MACHINE_CONFIG_START( vic20, vic20_state )
// devices
MCFG_DEVICE_ADD(M6522_1_TAG, VIA6522, 0)
MCFG_VIA6522_READPA_HANDLER(READ8(vic20_state, via1_pa_r))
MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(vic20_state, via1_pa_w))
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(vic20_state, via1_pb_w))
MCFG_VIA6522_CB1_HANDLER(DEVWRITELINE(PET_USER_PORT_TAG, pet_user_port_device, write_b))
MCFG_VIA6522_CA2_HANDLER(DEVWRITELINE(PET_DATASSETTE_PORT_TAG, pet_datassette_port_device, motor_w))
MCFG_VIA6522_CB2_HANDLER(DEVWRITELINE(PET_USER_PORT_TAG, pet_user_port_device, write_m))
MCFG_VIA6522_IRQ_HANDLER(DEVWRITELINE(M6502_TAG, m6502_device, nmi_line))
MCFG_DEVICE_ADD(M6522_2_TAG, VIA6522, 0)
MCFG_VIA6522_READPA_HANDLER(READ8(vic20_state, via2_pa_r))
MCFG_VIA6522_READPB_HANDLER(READ8(vic20_state, via2_pb_r))
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(vic20_state, via2_pb_w))
MCFG_VIA6522_CA2_HANDLER(WRITELINE(vic20_state, via2_ca2_w))
MCFG_VIA6522_CB2_HANDLER(WRITELINE(vic20_state, via2_cb2_w))
MCFG_VIA6522_IRQ_HANDLER(DEVWRITELINE(M6502_TAG, m6502_device, irq_line))
MCFG_PET_DATASSETTE_PORT_ADD(PET_DATASSETTE_PORT_TAG, cbm_datassette_devices, "c1530", DEVWRITELINE(M6522_2_TAG, via6522_device, write_ca1))
MCFG_CBM_IEC_ADD("c1541")
MCFG_CBM_IEC_BUS_SRQ_CALLBACK(DEVWRITELINE(M6522_2_TAG, via6522_device, write_cb1))
MCFG_VCS_CONTROL_PORT_ADD(CONTROL1_TAG, vcs_control_port_devices, "joy")
MCFG_VCS_CONTROL_PORT_TRIGGER_CALLBACK(WRITELINE(vic20_state, write_light_pen))
MCFG_PET_USER_PORT_ADD(PET_USER_PORT_TAG, vic20_user_port_cards, NULL)
MCFG_PET_USER_PORT_3_HANDLER(WRITELINE(vic20_state, exp_reset_w))
MCFG_PET_USER_PORT_4_HANDLER(WRITELINE(vic20_state, write_user_joy0))
MCFG_PET_USER_PORT_5_HANDLER(WRITELINE(vic20_state, write_user_joy1))
MCFG_PET_USER_PORT_6_HANDLER(WRITELINE(vic20_state, write_user_joy2))
MCFG_PET_USER_PORT_7_HANDLER(WRITELINE(vic20_state, write_user_light_pen))
MCFG_PET_USER_PORT_8_HANDLER(WRITELINE(vic20_state, write_user_cassette_switch))
MCFG_PET_USER_PORT_B_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_cb1))
MCFG_PET_USER_PORT_C_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb0))
MCFG_PET_USER_PORT_D_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb1))
MCFG_PET_USER_PORT_E_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb2))
MCFG_PET_USER_PORT_F_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb3))
MCFG_PET_USER_PORT_H_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb4))
MCFG_PET_USER_PORT_J_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb5))
MCFG_PET_USER_PORT_K_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb6))
MCFG_PET_USER_PORT_L_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_pb7))
MCFG_PET_USER_PORT_M_HANDLER(DEVWRITELINE(M6522_1_TAG, via6522_device, write_cb2))
MCFG_QUICKLOAD_ADD("quickload", vic20_state, cbm_vc20, "p00,prg", CBM_QUICKLOAD_DELAY_SECONDS)
// software lists
MCFG_SOFTWARE_LIST_ADD("cart_list", "vic1001_cart")
MCFG_SOFTWARE_LIST_ADD("cass_list", "vic1001_cass")
MCFG_SOFTWARE_LIST_ADD("flop_list", "vic1001_flop")
// internal ram
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("5K")
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_CONFIG( ntsc )
//-------------------------------------------------
static MACHINE_CONFIG_DERIVED( ntsc, vic20 )
// basic machine hardware
MCFG_CPU_ADD(M6502_TAG, M6502, MOS6560_CLOCK)
MCFG_CPU_PROGRAM_MAP(vic20_mem)
// video/sound hardware
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_MOS6560_ADD(M6560_TAG, SCREEN_TAG, MOS6560_CLOCK, vic_videoram_map, vic_colorram_map)
MCFG_MOS6560_POTX_CALLBACK(DEVREAD8(CONTROL1_TAG, vcs_control_port_device, pot_x_r))
MCFG_MOS6560_POTY_CALLBACK(DEVREAD8(CONTROL1_TAG, vcs_control_port_device, pot_y_r))
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
// devices
MCFG_VIC20_EXPANSION_SLOT_ADD(VIC20_EXPANSION_SLOT_TAG, MOS6560_CLOCK, vic20_expansion_cards, NULL)
MCFG_VIC20_EXPANSION_SLOT_IRQ_CALLBACK(INPUTLINE(M6502_TAG, M6502_IRQ_LINE))
MCFG_VIC20_EXPANSION_SLOT_NMI_CALLBACK(INPUTLINE(M6502_TAG, M6502_NMI_LINE))
MCFG_VIC20_EXPANSION_SLOT_RES_CALLBACK(WRITELINE(vic20_state, exp_reset_w))
// software lists
MCFG_SOFTWARE_LIST_FILTER("cart_list", "NTSC")
MCFG_SOFTWARE_LIST_FILTER("cass_list", "NTSC")
MCFG_SOFTWARE_LIST_FILTER("flop_list", "NTSC")
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_CONFIG( pal )
//-------------------------------------------------
static MACHINE_CONFIG_DERIVED( pal, vic20 )
// basic machine hardware
MCFG_CPU_ADD(M6502_TAG, M6502, MOS6561_CLOCK)
MCFG_CPU_PROGRAM_MAP(vic20_mem)
// video/sound hardware
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_MOS6561_ADD(M6560_TAG, SCREEN_TAG, MOS6561_CLOCK, vic_videoram_map, vic_colorram_map)
MCFG_MOS6560_POTX_CALLBACK(DEVREAD8(CONTROL1_TAG, vcs_control_port_device, pot_x_r))
MCFG_MOS6560_POTY_CALLBACK(DEVREAD8(CONTROL1_TAG, vcs_control_port_device, pot_y_r))
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
// devices
MCFG_VIC20_EXPANSION_SLOT_ADD(VIC20_EXPANSION_SLOT_TAG, MOS6561_CLOCK, vic20_expansion_cards, NULL)
MCFG_VIC20_EXPANSION_SLOT_IRQ_CALLBACK(INPUTLINE(M6502_TAG, M6502_IRQ_LINE))
MCFG_VIC20_EXPANSION_SLOT_NMI_CALLBACK(INPUTLINE(M6502_TAG, M6502_NMI_LINE))
MCFG_VIC20_EXPANSION_SLOT_RES_CALLBACK(WRITELINE(vic20_state, exp_reset_w))
// software lists
MCFG_SOFTWARE_LIST_FILTER("cart_list", "PAL")
MCFG_SOFTWARE_LIST_FILTER("cass_list", "PAL")
MCFG_SOFTWARE_LIST_FILTER("flop_list", "PAL")
MACHINE_CONFIG_END
//**************************************************************************
// 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(1) )
ROM_SYSTEM_BIOS( 1, "jiffydos", "JiffyDOS" )
ROMX_LOAD( "jiffydos vic-20 ntsc.ue12", 0x0000, 0x2000, CRC(683a757f) SHA1(83fb83e97b5a840311dbf7e1fe56fe828f41936d), ROM_BIOS(2) )
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(1) )
ROM_SYSTEM_BIOS( 1, "jiffydos", "JiffyDOS" )
ROMX_LOAD( "jiffydos vic-20 pal.ue12", 0x0000, 0x2000, CRC(705e7810) SHA1(5a03623a4b855531b8bffd756f701306f128be2d), ROM_BIOS(2) )
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 INIT COMPANY FULLNAME FLAGS
COMP( 1980, vic1001, 0, 0, ntsc, vic1001, driver_device, 0, "Commodore Business Machines", "VIC-1001 (Japan)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
COMP( 1981, vic20, vic1001, 0, ntsc, vic20, driver_device, 0, "Commodore Business Machines", "VIC-20 (NTSC)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
COMP( 1981, vic20p, vic1001, 0, pal, vic20, driver_device, 0, "Commodore Business Machines", "VIC-20 / VC-20 (PAL)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
COMP( 1981, vic20_se, vic1001, 0, pal, vic20s, driver_device, 0, "Commodore Business Machines", "VIC-20 (Sweden/Finland)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )