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tms9927: Added VSYNC callback. [Curt Coder]

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This commit is contained in:
Curt Coder 2014-01-14 18:49:24 +00:00
parent 189678f296
commit 6c8616c1c7
2 changed files with 54 additions and 2 deletions
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39
src/emu/video/tms9927.c
View File

@ -37,13 +37,15 @@ const device_type CRT5057 = &device_creator<crt5057_device>;
tms9927_device::tms9927_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, TMS9927, "TMS9927", tag, owner, clock, "tms9927", __FILE__),
device_video_interface(mconfig, *this)
device_video_interface(mconfig, *this),
m_write_vsyn(*this)
{
}
tms9927_device::tms9927_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source)
: device_t(mconfig, type, name, tag, owner, clock, shortname, source),
device_video_interface(mconfig, *this)
device_video_interface(mconfig, *this),
m_write_vsyn(*this)
{
}
@ -98,6 +100,12 @@ void tms9927_device::device_start()
assert(m_selfload != NULL);
}
// resolve callbacks
m_write_vsyn.resolve_safe();
// allocate timers
m_vsync_timer = timer_alloc(TIMER_VSYNC);
/* register for state saving */
machine().save().register_postload(save_prepost_delegate(FUNC(tms9927_device::state_postload), this));
@ -130,6 +138,30 @@ void tms9927_device::device_stop()
//-------------------------------------------------
// device_timer - handle timer events
//-------------------------------------------------
void tms9927_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TIMER_VSYNC:
m_vsyn = !m_vsyn;
m_write_vsyn(m_vsyn);
if (m_vsyn)
{
m_vsync_timer->adjust(m_screen->time_until_pos(3));
}
else
{
m_vsync_timer->adjust(m_screen->time_until_pos(0));
}
break;
}
}
void tms9927_device::state_postload()
{
@ -297,4 +329,7 @@ void tms9927_device::recompute_parameters(int postload)
refresh = HZ_TO_ATTOSECONDS(m_clock) * m_total_hpix * m_total_vpix;
m_screen->configure(m_total_hpix, m_total_vpix, visarea, refresh);
m_vsyn = 0;
m_vsync_timer->adjust(m_screen->time_until_pos(0, 0));
}

17
src/emu/video/tms9927.h
View File

@ -10,6 +10,10 @@
#ifndef __TMS9927__
#define __TMS9927__
#define MCFG_TMS9927_VSYN_CALLBACK(_write) \
devcb = &tms9927_device::set_vsyn_wr_callback(*device, DEVCB2_##_write);
/* interface */
struct tms9927_interface
{
@ -27,6 +31,8 @@ public:
tms9927_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
~tms9927_device() {}
template<class _Object> static devcb2_base &set_vsyn_wr_callback(device_t &device, _Object object) { return downcast<tms9927_device &>(device).m_write_vsyn.set_callback(object); }
DECLARE_WRITE8_MEMBER(write);
DECLARE_READ8_MEMBER(read);
@ -40,13 +46,20 @@ protected:
virtual void device_start();
virtual void device_stop();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
enum
{
TIMER_VSYNC
};
void state_postload();
void recompute_parameters(int postload);
void generic_access(address_space &space, offs_t offset);
devcb2_write_line m_write_vsyn;
// internal state
const UINT8 *m_selfload;
@ -60,6 +73,10 @@ private:
UINT8 m_valid_config;
UINT16 m_total_hpix, m_total_vpix;
UINT16 m_visible_hpix, m_visible_vpix;
int m_vsyn;
emu_timer *m_vsync_timer;
};
extern const device_type TMS9927;