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Fix cliffhgr. tms9928a depends on the screen parameters matching output

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exactly, but for ld games it doesn't since they are externally clocked.
This commit is contained in:
Aaron Giles 2012-02-04 19:58:03 +00:00
parent 3d10a89945
commit 39c358476c
3 changed files with 6 additions and 11 deletions
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6
src/emu/video/tms9928a.c
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@ -274,7 +274,8 @@ WRITE8_MEMBER( tms9928a_device::register_write )
void tms9928a_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
int vpos = m_screen->vpos();
int raw_vpos = m_screen->vpos();
int vpos = raw_vpos * m_vertical_size / m_screen->height();
UINT16 BackColour = m_Regs[7] & 15;
UINT16 *p = &m_tmpbmp.pix16(vpos);
@ -567,7 +568,7 @@ void tms9928a_device::device_timer(emu_timer &timer, device_timer_id id, int par
}
/* Schedule next callback */
m_line_timer->adjust( m_screen->time_until_pos( ( vpos + 1 ) % m_screen->height() , 0 ) );
m_line_timer->adjust( m_screen->time_until_pos( ( raw_vpos + 1 ) % m_screen->height() , 0 ) );
}
@ -602,6 +603,7 @@ void tms9928a_device::device_start()
assert( m_screen != NULL );
m_top_border = m_50hz ? TMS9928A_VERT_DISPLAY_START_PAL : TMS9928A_VERT_DISPLAY_START_NTSC;
m_vertical_size = m_50hz ? TMS9928A_TOTAL_VERT_PAL : TMS9928A_TOTAL_VERT_NTSC;
m_irq_changed.resolve( m_out_int_line, *this );

1
src/emu/video/tms9928a.h
View File

@ -153,6 +153,7 @@ private:
/* emulation settings */
int m_top_border;
int m_vertical_size;
};

10
src/mame/drivers/cliffhgr.c
View File

@ -671,14 +671,6 @@ static TMS9928A_INTERFACE(cliffhgr_tms9928a_interface)
DEVCB_LINE(vdp_interrupt)
};
static SCREEN_UPDATE_IND16( cliffhgr )
{
tms9928a_device *tms9928a = screen.machine().device<tms9928a_device>( "tms9928a" );
tms9928a->screen_update( screen, bitmap, cliprect );
return 0;
}
DISCRETE_SOUND_EXTERN( cliffhgr );
@ -701,7 +693,7 @@ static MACHINE_CONFIG_START( cliffhgr, cliffhgr_state )
MCFG_NVRAM_ADD_0FILL("nvram")
MCFG_LASERDISC_PR8210_ADD("laserdisc")
MCFG_LASERDISC_OVERLAY_STATIC(TMS9928A_TOTAL_HORZ, TMS9928A_TOTAL_VERT_NTSC, cliffhgr)
MCFG_LASERDISC_OVERLAY_DEVICE(TMS9928A_TOTAL_HORZ, TMS9928A_TOTAL_VERT_NTSC, "tms9928a", tms9928a_device, screen_update)
MCFG_LASERDISC_OVERLAY_CLIP(TMS9928A_HORZ_DISPLAY_START-12, TMS9928A_HORZ_DISPLAY_START+32*8+12-1, TMS9928A_VERT_DISPLAY_START_NTSC - 12, TMS9928A_VERT_DISPLAY_START_NTSC+24*8+12-1)
/* start with the TMS9928a video configuration */