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Interrupt line & events supported.

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This commit is contained in:
Jean-François DEL NERO 2015-12-27 23:51:52 +01:00
parent ea3e3870da
commit 179feeac15
2 changed files with 90 additions and 1 deletions
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80
src/devices/video/ef9365.cpp
View File

@ -100,7 +100,8 @@ ef9365_device::ef9365_device(const machine_config &mconfig, const char *tag, dev
device_memory_interface(mconfig, *this),
device_video_interface(mconfig, *this),
m_space_config("videoram", ENDIANNESS_LITTLE, 8, 18, 0, NULL, *ADDRESS_MAP_NAME(ef9365)),
m_palette(*this)
m_palette(*this),
m_irq_handler(*this)
{
clock_freq = clock;
}
@ -203,12 +204,19 @@ void ef9365_device::device_start()
{
int i;
m_irq_handler.resolve_safe();
m_busy_timer = timer_alloc(BUSY_TIMER);
m_videoram = &space(0);
m_charset = region();
m_current_color = 0x0F;
m_irq_vb = 0;
m_irq_lb = 0;
m_irq_rdy = 0;
m_irq_state = 0;
// Default palette : Black and white
palette[0] = rgb_t(0, 0, 0);
for( i = 1; i < 16 ; i++ )
@ -223,6 +231,11 @@ void ef9365_device::device_start()
save_item(NAME(m_bf));
save_item(NAME(m_state));
save_item(NAME(m_irq_state));
save_item(NAME(m_irq_vb));
save_item(NAME(m_irq_lb));
save_item(NAME(m_irq_rdy));
save_item(NAME(m_screen_out));
}
@ -232,7 +245,12 @@ void ef9365_device::device_start()
void ef9365_device::device_reset()
{
m_state = 0;
m_bf = 0;
m_irq_state = 0;
m_irq_vb = 0;
m_irq_lb = 0;
m_irq_rdy = 0;
memset(m_registers, 0, sizeof(m_registers));
memset(m_border, 0, sizeof(m_border));
@ -240,8 +258,27 @@ void ef9365_device::device_reset()
m_screen_out.fill(0);
set_video_mode();
m_irq_handler(FALSE);
}
//-------------------------------------------------
// update_interrupts
//-------------------------------------------------
void ef9365_device::update_interrupts()
{
int new_state = ( m_irq_vb && (m_registers[EF936X_REG_CTRL1] & 0x20) )
|| ( m_irq_rdy && (m_registers[EF936X_REG_CTRL1] & 0x40) )
|| ( m_irq_lb && (m_registers[EF936X_REG_CTRL1] & 0x10) );
if (new_state != m_irq_state)
{
m_irq_state = new_state;
m_irq_handler(m_irq_state);
}
}
//-------------------------------------------------
// device_timer - handler timer events
//-------------------------------------------------
@ -251,6 +288,14 @@ void ef9365_device::device_timer(emu_timer &timer, device_timer_id id, int param
{
case BUSY_TIMER:
m_bf = 0;
if( m_registers[EF936X_REG_CTRL1] & 0x40 )
{
m_irq_rdy = 1;
}
update_interrupts();
break;
}
}
@ -930,7 +975,15 @@ UINT32 ef9365_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap,
void ef9365_device::update_scanline(UINT16 scanline)
{
if (scanline == vsync_scanline_pos)
{
m_state |= (0x02); // vsync
if( m_registers[EF936X_REG_CTRL1] & 0x20 )
{
m_irq_vb = 1;
}
update_interrupts();
}
if (scanline == 0)
{
@ -956,6 +1009,31 @@ READ8_MEMBER( ef9365_device::data_r )
m_state |= 0x08;
}
if( m_irq_vb || m_irq_lb || m_irq_rdy )
{
m_state |= 0x80;
}
if( m_irq_lb )
{
m_state |= 0x10;
m_irq_lb = 0;
}
if( m_irq_vb )
{
m_state |= 0x20;
m_irq_vb = 0;
}
if( m_irq_rdy )
{
m_state |= 0x40;
m_irq_rdy = 0;
}
update_interrupts();
return_value = m_state;
break;
case EF936X_REG_CTRL1:

11
src/devices/video/ef9365.h
View File

@ -25,6 +25,9 @@
#define MCFG_EF936X_DISPLAYMODE(_display_mode) \
ef9365_device::static_set_display_mode(*device,_display_mode);
#define MCFG_EF936X_IRQ_HANDLER(_devcb) \
devcb = &ef9365_device::set_irq_handler(*device, DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
@ -43,6 +46,7 @@ public:
static void static_set_palette_tag(device_t &device, const char *tag);
static void static_set_nb_bitplans(device_t &device, int nb_bitplans );
static void static_set_display_mode(device_t &device, int display_mode );
template<class _Object> static devcb_base &set_irq_handler(device_t &device, _Object object) { return downcast<ef9365_device &>(device).m_irq_handler.set_callback(object); }
// device interface
DECLARE_READ8_MEMBER( data_r );
@ -84,12 +88,18 @@ private:
void ef9365_exec(UINT8 cmd);
int cycles_to_us(int cycles);
void update_interrupts();
// internal state
static const device_timer_id BUSY_TIMER = 0;
memory_region *m_charset;
address_space *m_videoram;
UINT8 m_irq_state;
UINT8 m_irq_vb;
UINT8 m_irq_lb;
UINT8 m_irq_rdy;
UINT8 m_current_color;
UINT8 m_bf; //busy flag
UINT8 m_registers[0x10]; //registers
@ -112,6 +122,7 @@ private:
emu_timer *m_busy_timer;
required_device<palette_device> m_palette;
devcb_write_line m_irq_handler;
};
// device type definition