Esempi in C++ (Cpp) per vtech2_cassette_image

Esempio n. 1

File: vtech2.c Progetto: broftkd/historic-mess

/*************************************************
 * memory mapped I/O read
 * bit  function
 * 7	not assigned
 * 6	column 6
 * 5	column 5
 * 4	column 4
 * 3	column 3
 * 2	column 2
 * 1	column 1
 * 0	column 0
 ************************************************/
static int mra_bank(int bank, int offs)
{
	static int level_old = 0, cassette_bit = 0;
    int level, data = 0xff;

    /* Laser 500/700 only: keyboard rows A through D */
	if( (offs & 0x00ff) == 0x00ff )
	{
		static int row_a,row_b,row_c,row_d;
		if( (offs & 0x0300) == 0x0000 ) /* keyboard row A */
		{
			if( readinputport( 8) != row_a )
			{
				row_a = readinputport(8);
				data &= row_a;
			}
		}
		if( (offs & 0x0300) == 0x0100 ) /* keyboard row B */
		{
			if( readinputport( 9) != row_b )
			{
				row_b = readinputport( 9);
				data &= row_b;
			}
		}
		if( (offs & 0x0300) == 0x0200 ) /* keyboard row C */
		{
			if( readinputport(10) != row_c )
			{
				row_c = readinputport(10);
				data &= row_c;
			}
		}
		if( (offs & 0x0300) == 0x0300 ) /* keyboard row D */
		{
			if( readinputport(11) != row_d )
			{
				row_d = readinputport(11);
				data &= row_d;
			}
		}
	}
	else
	{
		/* All Lasers keyboard rows 0 through 7 */
        if( !(offs & 0x01) )
			data &= readinputport( 0);
		if( !(offs & 0x02) )
			data &= readinputport( 1);
		if( !(offs & 0x04) )
			data &= readinputport( 2);
		if( !(offs & 0x08) )
			data &= readinputport( 3);
		if( !(offs & 0x10) )
			data &= readinputport( 4);
		if( !(offs & 0x20) )
			data &= readinputport( 5);
		if( !(offs & 0x40) )
			data &= readinputport( 6);
		if( !(offs & 0x80) )
			data &= readinputport( 7);
	}

    /* what's bit 7 good for? tape input maybe? */
	level = cassette_input(vtech2_cassette_image()) * 65536.0;
	if( level < level_old - 511 )
		cassette_bit = 0x00;
	if( level > level_old + 511 )
		cassette_bit = 0x80;
	level_old = level;

	data &= ~cassette_bit;
    // logerror("bank #%d keyboard_r [$%04X] $%02X\n", bank, offs, data);

    return data;
}

Esempio n. 2

File: vtech2.c Progetto: poliva/mame-rr

/*************************************************
 * memory mapped I/O read
 * bit  function
 * 7    not assigned
 * 6    column 6
 * 5    column 5
 * 4    column 4
 * 3    column 3
 * 2    column 2
 * 1    column 1
 * 0    column 0
 ************************************************/
static int mra_bank(running_machine &machine, int bank, int offs)
{
	vtech2_state *state = machine.driver_data<vtech2_state>();
    int level, data = 0xff;

    /* Laser 500/700 only: keyboard rows A through D */
	if( (offs & 0x00ff) == 0x00ff )
	{
		if( (offs & 0x0300) == 0x0000 ) /* keyboard row A */
		{
			if( input_port_read(machine, "ROWA") != state->m_row_a )
			{
				state->m_row_a = input_port_read(machine, "ROWA");
				data &= state->m_row_a;
			}
		}
		if( (offs & 0x0300) == 0x0100 ) /* keyboard row B */
		{
			if( input_port_read(machine, "ROWB") != state->m_row_b )
			{
				state->m_row_b = input_port_read(machine, "ROWB");
				data &= state->m_row_b;
			}
		}
		if( (offs & 0x0300) == 0x0200 ) /* keyboard row C */
		{
			if( input_port_read(machine, "ROWC") != state->m_row_c )
			{
				state->m_row_c = input_port_read(machine, "ROWC");
				data &= state->m_row_c;
			}
		}
		if( (offs & 0x0300) == 0x0300 ) /* keyboard row D */
		{
			if( input_port_read(machine, "ROWD") != state->m_row_d )
			{
				state->m_row_d = input_port_read(machine, "ROWD");
				data &= state->m_row_d;
			}
		}
	}
	else
	{
		/* All Lasers keyboard rows 0 through 7 */
        if( !(offs & 0x01) )
			data &= input_port_read(machine, "ROW0");
		if( !(offs & 0x02) )
			data &= input_port_read(machine, "ROW1");
		if( !(offs & 0x04) )
			data &= input_port_read(machine, "ROW2");
		if( !(offs & 0x08) )
			data &= input_port_read(machine, "ROW3");
		if( !(offs & 0x10) )
			data &= input_port_read(machine, "ROW4");
		if( !(offs & 0x20) )
			data &= input_port_read(machine, "ROW5");
		if( !(offs & 0x40) )
			data &= input_port_read(machine, "ROW6");
		if( !(offs & 0x80) )
			data &= input_port_read(machine, "ROW7");
	}

    /* what's bit 7 good for? tape input maybe? */
	level = (vtech2_cassette_image(machine))->input() * 65536.0;
	if( level < state->m_level_old - 511 )
		state->m_cassette_bit = 0x00;
	if( level > state->m_level_old + 511 )
		state->m_cassette_bit = 0x80;
	state->m_level_old = level;

	data &= ~state->m_cassette_bit;
    // logerror("bank #%d keyboard_r [$%04X] $%02X\n", bank, offs, data);

    return data;
}