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(MESS) pasogo.c: Add some more pc devices. (nw)

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This commit is contained in:
Wilbert Pol 2013-05-27 19:19:38 +00:00
parent 6806269f61
commit c1290f47bb
1 changed files with 176 additions and 2 deletions
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178
src/mess/drivers/pasogo.c
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@ -93,6 +93,10 @@ Notes:
although it is very related to standard pc hardware, it is different enough
to make the standard pc driver one level more complex, so own driver
TODO:
- Make a separate device of the Vadem VG230 core (it is also used in the HP
OmniGo 100 and 120).
******************************************************************************/
#include "emu.h"
@ -101,6 +105,9 @@ to make the standard pc driver one level more complex, so own driver
#include "machine/pic8259.h"
#include "machine/pit8253.h"
#include "machine/am9517a.h"
#include "sound/speaker.h"
#include "machine/i8255.h"
/*
rtc interrupt irq 2
@ -148,12 +155,15 @@ public:
, m_pic8259(*this, "pic8259")
, m_dma8237(*this, "dma8237")
, m_pit8253(*this, "pit8254")
, m_speaker(*this, "speaker")
{ }
required_device<cpu_device> m_maincpu;
required_device<pic8259_device> m_pic8259;
required_device<am9517a_device> m_dma8237;
required_device<pit8253_device> m_pit8253;
required_device<speaker_sound_device> m_speaker;
DECLARE_READ8_MEMBER(ems_r);
DECLARE_WRITE8_MEMBER(ems_w);
DECLARE_READ8_MEMBER(vg230_io_r);
@ -170,6 +180,11 @@ public:
IRQ_CALLBACK_MEMBER(pasogo_irq_callback);
void vg230_reset();
void vg230_init();
DECLARE_READ8_MEMBER( page_r );
DECLARE_WRITE8_MEMBER( page_w );
DECLARE_WRITE_LINE_MEMBER( speaker_set_spkrdata );
DECLARE_WRITE_LINE_MEMBER( pit8253_out1_changed );
DECLARE_WRITE_LINE_MEMBER( pit8253_out2_changed );
DECLARE_WRITE_LINE_MEMBER( dma_hrq_changed );
DECLARE_WRITE_LINE_MEMBER( dma8237_out_eop );
DECLARE_READ8_MEMBER( dma_read_byte );
@ -186,12 +201,29 @@ public:
DECLARE_WRITE_LINE_MEMBER( dack1_w ) { select_dma_channel(1, state); }
DECLARE_WRITE_LINE_MEMBER( dack2_w ) { select_dma_channel(2, state); }
DECLARE_WRITE_LINE_MEMBER( dack3_w ) { select_dma_channel(3, state); }
DECLARE_READ8_MEMBER( ppi_porta_r );
DECLARE_READ8_MEMBER( ppi_portc_r );
DECLARE_WRITE8_MEMBER( ppi_portb_w );
protected:
UINT8 m_u73_q2;
UINT8 m_out1;
int m_dma_channel;
bool m_cur_eop;
UINT8 m_dma_offset[4];
UINT8 m_pc_spkrdata;
UINT8 m_pc_input;
int m_ppi_portc_switch_high;
int m_ppi_speaker;
int m_ppi_keyboard_clear;
UINT8 m_ppi_keyb_clock;
UINT8 m_ppi_portb;
UINT8 m_ppi_clock_signal;
UINT8 m_ppi_data_signal;
UINT8 m_ppi_shift_register;
UINT8 m_ppi_shift_enable;
};
@ -474,6 +506,7 @@ static ADDRESS_MAP_START(pasogo_io, AS_IO, 16, pasogo_state)
AM_RANGE(0x0020, 0x0021) AM_DEVREADWRITE8("pic8259", pic8259_device, read, write, 0xffff)
AM_RANGE(0x26, 0x27) AM_READWRITE8(vg230_io_r, vg230_io_w, 0xffff )
AM_RANGE(0x0040, 0x0043) AM_DEVREADWRITE8_LEGACY("pit8254", pit8253_r, pit8253_w, 0xffff)
AM_RANGE(0x0060, 0x0063) AM_DEVREADWRITE8("ppi8255", i8255_device, read, write, 0xffff)
AM_RANGE(0x6c, 0x6f) AM_READWRITE8(ems_r, ems_w, 0xffff )
ADDRESS_MAP_END
@ -581,8 +614,41 @@ IRQ_CALLBACK_MEMBER(pasogo_state::pasogo_irq_callback)
void pasogo_state::machine_reset()
{
m_maincpu->set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(pasogo_state::pasogo_irq_callback),this));
m_u73_q2 = 0;
m_out1 = 2; // initial state of pit output is undefined
m_pc_spkrdata = 0;
m_pc_input = 0;
m_dma_channel = -1;
m_cur_eop = false;
}
WRITE_LINE_MEMBER(pasogo_state::speaker_set_spkrdata)
{
m_pc_spkrdata = state ? 1 : 0;
speaker_level_w( m_speaker, m_pc_spkrdata & m_pc_input );
}
WRITE_LINE_MEMBER( pasogo_state::pit8253_out1_changed )
{
/* Trigger DMA channel #0 */
if ( m_out1 == 0 && state == 1 && m_u73_q2 == 0 )
{
m_u73_q2 = 1;
m_dma8237->dreq0_w( m_u73_q2 );
}
m_out1 = state;
}
WRITE_LINE_MEMBER( pasogo_state::pit8253_out2_changed )
{
m_pc_input = state ? 1 : 0;
speaker_level_w( m_speaker, m_pc_spkrdata & m_pc_input );
}
static const pit8253_config pc_pit8254_config =
{
{
@ -593,16 +659,39 @@ static const pit8253_config pc_pit8254_config =
}, {
4772720/4, /* dram refresh */
DEVCB_NULL,
DEVCB_NULL
DEVCB_DRIVER_LINE_MEMBER(pasogo_state, pit8253_out1_changed)
}, {
4772720/4, /* pio port c pin 4, and speaker polling enough */
DEVCB_NULL,
DEVCB_NULL
DEVCB_DRIVER_LINE_MEMBER(pasogo_state, pit8253_out2_changed)
}
}
};
READ8_MEMBER( pasogo_state::page_r )
{
return 0xFF;
}
WRITE8_MEMBER( pasogo_state::page_w )
{
switch(offset % 4)
{
case 1:
m_dma_offset[2] = data;
break;
case 2:
m_dma_offset[3] = data;
break;
case 3:
m_dma_offset[0] = m_dma_offset[1] = data;
break;
}
}
WRITE_LINE_MEMBER( pasogo_state::dma_hrq_changed )
{
m_maincpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
@ -733,6 +822,85 @@ static I8237_INTERFACE( dma8237_config )
};
READ8_MEMBER (pasogo_state::ppi_porta_r)
{
int data = 0xFF;
/* KB port A */
if (m_ppi_keyboard_clear)
{
//data = ioport("DSW0")->read();
}
else
{
data = m_ppi_shift_register;
}
return data;
}
READ8_MEMBER ( pasogo_state::ppi_portc_r )
{
int timer2_output = pit8253_get_output( m_pit8253, 2 );
int data=0xff;
data&=~0x80; // no parity error
data&=~0x40; // no error on expansion board
/* KB port C: equipment flags */
if (m_ppi_portc_switch_high)
{
/* read hi nibble of S2 */
//data = (data & 0xf0) | ((ioport("DSW0")->read() >> 4) & 0x0f);
}
else
{
/* read lo nibble of S2 */
//data = (data & 0xf0) | (ioport("DSW0")->read() & 0x0f);
}
if ( m_ppi_portb & 0x01 )
{
data = ( data & ~0x10 ) | ( timer2_output ? 0x10 : 0x00 );
}
data = ( data & ~0x20 ) | ( timer2_output ? 0x20 : 0x00 );
return data;
}
WRITE8_MEMBER( pasogo_state::ppi_portb_w )
{
/* PPI controller port B*/
m_ppi_portb = data;
m_ppi_portc_switch_high = data & 0x08;
m_ppi_keyboard_clear = data & 0x80;
m_ppi_keyb_clock = data & 0x40;
pit8253_gate2_w(m_pit8253, BIT(data, 0));
speaker_set_spkrdata( data & 0x02 );
m_ppi_clock_signal = ( m_ppi_keyb_clock ) ? 1 : 0;
//m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal);
/* If PB7 is set clear the shift register and reset the IRQ line */
if ( m_ppi_keyboard_clear )
{
m_pic8259->ir1_w(0);
m_ppi_shift_register = 0;
m_ppi_shift_enable = 1;
}
}
static I8255A_INTERFACE( ppi8255_interface )
{
DEVCB_DRIVER_MEMBER(pasogo_state, ppi_porta_r),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DRIVER_MEMBER(pasogo_state, ppi_portb_w),
DEVCB_DRIVER_MEMBER(pasogo_state, ppi_portc_r),
DEVCB_NULL
};
WRITE_LINE_MEMBER(pasogo_state::pasogo_pic8259_set_int_line)
{
m_maincpu->set_input_line(0, state ? HOLD_LINE : CLEAR_LINE);
@ -752,6 +920,8 @@ static MACHINE_CONFIG_START( pasogo, pasogo_state )
MCFG_I8237_ADD( "dma8237", XTAL_14_31818MHz/3, dma8237_config )
MCFG_I8255_ADD( "ppi8255", ppi8255_interface )
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_SIZE(640, 400)
@ -760,6 +930,10 @@ static MACHINE_CONFIG_START( pasogo, pasogo_state )
MCFG_PALETTE_LENGTH(ARRAY_LENGTH(pasogo_palette))
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MCFG_CARTSLOT_ADD("cart")
MCFG_CARTSLOT_EXTENSION_LIST("bin")
MCFG_CARTSLOT_MANDATORY