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Preliminary scroll, just to realize that I need to rewrite the video emulation ...

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This commit is contained in:
Angelo Salese 2013-03-15 01:01:23 +00:00
parent 799faee10f
commit 12f745b785
1 changed files with 83 additions and 9 deletions
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92
src/mess/drivers/fp200.c
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@ -69,23 +69,97 @@ void fp200_state::video_start()
m_lcd.attr = auto_alloc_array_clear(machine(), UINT8, 20*64);
}
/* TODO: Very preliminary, I actually believe that the LCDC writes in a blitter fashion ... */
UINT32 fp200_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
{
UINT16 l_offs, r_offs;
bitmap.fill(0, cliprect);
l_offs = 0;
r_offs = 0;
for(int y=cliprect.min_y;y<cliprect.max_y;y++)
{
for(int x=cliprect.min_x;x<cliprect.max_x;x++)
for(int x=0;x<80;x++)
{
if(m_lcd.attr[x/8+y*20] == 0x60)
if(m_lcd.attr[x/8+y*20] == 0x50)
{
l_offs = (y & ~7);
break;
}
}
}
for(int y=cliprect.min_y;y<cliprect.max_y;y++)
{
for(int x=80;x<160;x++)
{
if(m_lcd.attr[x/8+y*20] == 0x50)
{
r_offs = (y & ~7);
break;
}
}
}
for(int y=cliprect.min_y;y<cliprect.max_y;y++)
{
for(int x=0;x<80;x++)
{
UINT16 yoffs;
yoffs = y + l_offs;
if(yoffs >= 64)
yoffs -= 64;
if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
{
UINT8 vram,pix;
vram = m_lcd.vram[x/8+y*20];
pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(y & 7))) & 1;
vram = m_lcd.vram[x/8+yoffs*20];
pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
bitmap.pix16(y,x) = pix;
}
/* fake, to see where the scrolling should stay. */
if(m_lcd.attr[x/8+y*20] == 0x50)
bitmap.pix16(y,x) = machine().rand() & 1;
/*
else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
{
UINT8 vram,pix;
vram = m_lcd.vram[x/8+yoffs*20];
pix = (vram) >> (7-(yoffs & 7)) & 1;
bitmap.pix16(y,x) = pix;
}*/
}
}
for(int y=cliprect.min_y;y<cliprect.max_y;y++)
{
for(int x=80;x<160;x++)
{
UINT16 yoffs;
yoffs = y + r_offs;
if(yoffs >= 64)
yoffs -= 64;
if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
{
UINT8 vram,pix;
vram = m_lcd.vram[x/8+yoffs*20];
pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
bitmap.pix16(y,x) = pix;
}
/*else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
{
UINT8 vram,pix;
vram = m_lcd.vram[x/8+yoffs*20];
pix = (vram) >> (7-(yoffs & 7)) & 1;
bitmap.pix16(y,x) = pix;
}*/
}
}
@ -144,14 +218,14 @@ READ8_MEMBER(fp200_state::fp200_lcd_r)
switch(offset)
{
case 1:
printf("%d %d -> (L) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
//printf("%d %d -> (L) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
if(m_lcd.status == 0xb)
res = read_lcd_attr(m_lcd.x,m_lcd.y);
else if(m_lcd.status == 1)
res = read_lcd_vram(m_lcd.x,m_lcd.y);
break;
case 2:
printf("%d %d -> (R) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
//printf("%d %d -> (R) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
if(m_lcd.status == 0xb)
res = read_lcd_attr(m_lcd.x + 10,m_lcd.y);
else if(m_lcd.status == 1)