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v100: Render set-up screen much better (nw)

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This commit is contained in:
AJR 2018-01-15 08:39:10 -05:00
parent 6b0f14ed7b
commit 9d5aef5c68
1 changed files with 63 additions and 28 deletions
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91
src/mame/drivers/v100.cpp
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@ -68,39 +68,74 @@ u32 v100_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const
return 0;
}
unsigned row = cliprect.top() / 10;
unsigned scan = cliprect.top() % 10;
unsigned row0 = cliprect.top() / 10;
unsigned x0 = cliprect.left();
unsigned stride = (screen.visible_area().width() / CHAR_WIDTH) + 2;
unsigned ch0 = (x0 / CHAR_WIDTH) + (row * stride) + 2;
unsigned px0 = x0 % CHAR_WIDTH;
for (unsigned y = cliprect.top(); y <= cliprect.bottom(); y++)
u16 start = 0;
unsigned y = 0;
for (unsigned row = 0; y <= cliprect.bottom(); row++)
{
unsigned x = x0, ch = ch0, px = px0;
u8 vchar = m_videoram[ch & m_videoram.mask()];
u8 gfxdata = m_p_chargen[((vchar & 0x7f) << 4) | scan];
while (x <= cliprect.right())
start = m_videoram[start] | (m_videoram[(start + 1) & 0xfff] << 8);
u16 end = start + 0x50;
switch (start & 0xf000)
{
bitmap.pix(y, x) = BIT(gfxdata, 7) ? rgb_t::white() : rgb_t::black();
x++;
px++;
if ((px & 1) == 0)
gfxdata <<= 1;
if (px >= CHAR_WIDTH)
case 0x1000:
end = start + 0x29;
break;
case 0x3000:
end = start + 0x6e;
break;
case 0xc000:
end = start + 0x50;
break;
default:
break;
}
start &= 0xfff;
end &= 0xfff;
if (row < row0)
y += 10;
else
{
unsigned scan = 0;
if (row == row0)
{
vchar = m_videoram[++ch & m_videoram.mask()];
gfxdata = m_p_chargen[((vchar & 0x7f) << 4) | scan];
px = 0;
scan += cliprect.top() - y;
y = cliprect.top();
}
while (scan < 10 && y <= cliprect.bottom())
{
unsigned x = x0, px = px0, addr = start;
u8 gfxdata = m_p_chargen[((m_videoram[addr] & 0x7f) << 4) | scan] << (px0 / 2);
while (x <= cliprect.right())
{
bitmap.pix(y, x) = BIT(gfxdata, 7) ? rgb_t::white() : rgb_t::black();
x++;
px++;
if ((px & 1) == 0)
gfxdata <<= 1;
if (px >= CHAR_WIDTH)
{
addr = (addr + 1) & 0xfff;
gfxdata = m_p_chargen[((m_videoram[addr] & 0x7f) << 4) | scan];
px = 0;
if (addr == end)
{
while (x <= cliprect.right())
bitmap.pix(y, x++) = rgb_t::black();
break;
}
}
}
scan++;
y++;
}
}
scan++;
if (scan >= 10)
{
row++;
ch0 += stride;
scan = 0;
}
start = end;
}
return 0;
@ -145,14 +180,14 @@ WRITE8_MEMBER(v100_state::ppi_porta_w)
}
static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, v100_state )
AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x0000, 0x1fff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x4000, 0x4fff) AM_RAM AM_SHARE("videoram")
AM_RANGE(0x5000, 0x5fff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, v100_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x0f) AM_DEVREADWRITE("vtac", crt5037_device, read, write)
AM_RANGE(0x00, 0x0f) AM_DEVWRITE("vtac", crt5037_device, write)
AM_RANGE(0x10, 0x10) AM_WRITE(brg_w<0>)
AM_RANGE(0x12, 0x12) AM_DEVREADWRITE("usart1", i8251_device, data_r, data_w)
AM_RANGE(0x13, 0x13) AM_DEVREADWRITE("usart1", i8251_device, status_r, control_w)
@ -225,7 +260,7 @@ Crystal: 47.736
***************************************************************************************************************/
ROM_START( v100 )
ROM_REGION(0x4000, "maincpu", 0)
ROM_REGION(0x2000, "maincpu", 0)
ROM_LOAD( "262-047.u108", 0x0000, 0x1000, CRC(e82f708c) SHA1(20ed83a41fd0703d72a20e170af971181cfbd575) )
ROM_LOAD( "262-048.u110", 0x1000, 0x1000, CRC(830923d3) SHA1(108590234ff84b5856cc2784d738a2a625305953) )