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Moved base address out of legacy switch case (nw)

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This commit is contained in:
angelosa 2017-06-29 02:06:59 +02:00
parent 6080fc101a
commit b85cbce394
2 changed files with 23 additions and 2 deletions
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22
src/mame/video/ygv608.cpp
View File

@ -366,6 +366,7 @@ GFXDECODE_END
static ADDRESS_MAP_START( regs_map, AS_IO, 8, ygv608_device )
AM_RANGE(14, 14) AM_READWRITE(irq_mask_r,irq_mask_w)
AM_RANGE(15, 16) AM_READWRITE(irq_ctrl_r,irq_ctrl_w)
AM_RANGE(17, 24) AM_WRITE(base_address_w)
AM_RANGE(39, 46) AM_WRITE(crtc_w)
ADDRESS_MAP_END
@ -1805,6 +1806,7 @@ WRITE8_MEMBER( ygv608_device::irq_ctrl_w )
//printf("%d %d %d %d %d\n",m_raster_irq_hpos,m_raster_irq_vpos,m_raster_irq_mode,m_crtc.htotal,m_crtc.vtotal);
}
// helper for validating and convert to screen position
attotime ygv608_device::raster_sync_offset()
{
@ -1819,9 +1821,26 @@ attotime ygv608_device::raster_sync_offset()
return attotime::never;
}
// TODO: actual sync not taken into account, needs a better test than NCV2 limited case
return m_screen->time_until_pos(m_raster_irq_vpos,m_raster_irq_hpos);
}
// R#17 / R#24 - base address
/*
* offset & 4 selects plane B
* -xxx ---- write to base address + 1
* ---- -xxx write to base address
*/
WRITE8_MEMBER( ygv608_device::base_address_w )
{
int plane = offset >> 2;
int addr = ( offset << 1 ) & 0x07;
m_base_addr[plane][addr] = data & 0x07;
m_base_addr[plane][addr+1] = (data >> 4) & 0x7;
m_tilemap_resize = 1;
}
// R#39W - R#46W display scan control write
WRITE8_MEMBER( ygv608_device::crtc_w )
@ -1961,7 +1980,6 @@ void ygv608_device::SetPreShortcuts( int reg, int data )
void ygv608_device::SetPostShortcuts(int reg )
{
int plane, addr;
switch (reg)
{
@ -2052,6 +2070,7 @@ void ygv608_device::SetPostShortcuts(int reg )
//ShowYGV608Registers();
break;
#if 0
case 17 : case 18 : case 19 : case 20 :
case 21 : case 22 : case 23 : case 24 :
plane = (reg-17) >> 2;
@ -2059,6 +2078,7 @@ void ygv608_device::SetPostShortcuts(int reg )
m_base_addr[plane][addr] = m_regs.b[reg] & 0x0f;
m_base_addr[plane][addr+1] = m_regs.b[reg] >> 4;
break;
#endif
case 25 : case 26 : case 27 :
m_ax = (int)(m_regs.s.ax16 & 0x1f) << 16 |

1
src/mame/video/ygv608.h
View File

@ -47,6 +47,7 @@ public:
DECLARE_READ8_MEMBER(irq_ctrl_r);
DECLARE_WRITE8_MEMBER(irq_ctrl_w);
DECLARE_WRITE8_MEMBER(crtc_w);
DECLARE_WRITE8_MEMBER(base_address_w);
// TODO: is this even a real connection?
void set_gfxbank(uint8_t gfxbank);