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k052109.cpp fix/cleanup tilemap scrolls, fixes fuusenpn and MT6790

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This commit is contained in:
MetalliC 2020-01-27 00:15:49 +02:00
parent f6a04074f6
commit 9c50204b23
1 changed files with 30 additions and 27 deletions
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57
src/mame/video/k052109.cpp
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@ -86,12 +86,11 @@ address lines), and then reading it from the 051962.
1 = 64 (actually 40) columns
---xx--- layer B row scroll
--x----- layer B column scroll
surpratk sets this register to 70 during the second boss. There is
nothing obviously wrong so it's not clear what should happen.
suratk sets this register to 70 during the second boss to produce rotating star field, using X and Y scroll in the same time.
not emulated due to MAME's tilemaps restrictions, currently handled in hacky way.
glfgreat sets it to 30 when showing the leader board
mariorou sets it to 36 when ingame, while actually does per-row scroll for layer A and per-collumn scroll for layer B.
such usage not supported by current implementation, hacked in game driver instead.
fuusenpn sets this to 20 but not happy with -6 added to column index, apparently current logic is not entirely correct.
1d00 : bits 0 & 1 might enable NMI and FIRQ, not sure
: bit 2 = IRQ enable
1d80 : ROM bank selector bits 0-3 = bank 0 bits 4-7 = bank 1
@ -249,6 +248,9 @@ void k052109_device::device_start()
m_tilemap[1]->set_transparent_pen(0);
m_tilemap[2]->set_transparent_pen(0);
m_tilemap[1]->set_scrolldx(6, 6);
m_tilemap[2]->set_scrolldx(6, 6);
save_pointer(NAME(m_ram), 0x6000);
save_item(NAME(m_rmrd_line));
save_item(NAME(m_romsubbank));
@ -519,19 +521,21 @@ popmessage("%x %x %x %x",
}
#endif
// note: this chip can do both per-column and per-row scroll in the same time, currently not emulated.
if ((m_scrollctrl & 0x03) == 0x02)
{
uint8_t *scrollram = &m_ram[0x1a00];
m_tilemap[1]->set_scroll_rows(256);
m_tilemap[1]->set_scroll_rows(32);
m_tilemap[1]->set_scroll_cols(1);
yscroll = m_ram[0x180c];
m_tilemap[1]->set_scrolly(0, yscroll);
for (offs = 0; offs < 256; offs++)
yscroll /= 8;
for (offs = 0; offs < 32; offs++)
{
xscroll = scrollram[2 * (offs & 0xfff8) + 0] + 256 * scrollram[2 * (offs & 0xfff8) + 1];
xscroll -= 6;
m_tilemap[1]->set_scrollx((offs + yscroll) & 0xff, xscroll);
xscroll = scrollram[16 * offs + 0] + 256 * scrollram[16 * offs + 1];
m_tilemap[1]->set_scrollx((offs + yscroll) & 31, xscroll);
}
}
else if ((m_scrollctrl & 0x03) == 0x03)
@ -545,7 +549,6 @@ popmessage("%x %x %x %x",
for (offs = 0; offs < 256; offs++)
{
xscroll = scrollram[2 * offs + 0] + 256 * scrollram[2 * offs + 1];
xscroll -= 6;
m_tilemap[1]->set_scrollx((offs + yscroll) & 0xff, xscroll);
}
}
@ -554,14 +557,14 @@ popmessage("%x %x %x %x",
uint8_t *scrollram = &m_ram[0x1800];
m_tilemap[1]->set_scroll_rows(1);
m_tilemap[1]->set_scroll_cols(512);
m_tilemap[1]->set_scroll_cols(64);
xscroll = m_ram[0x1a00] + 256 * m_ram[0x1a01];
xscroll -= 6;
m_tilemap[1]->set_scrollx(0, xscroll);
for (offs = 0; offs < 512; offs++)
xscroll /= 8;
for (offs = 0; offs < 64; offs++)
{
yscroll = scrollram[offs / 8];
m_tilemap[1]->set_scrolly((offs + xscroll) & 0x1ff, yscroll);
yscroll = scrollram[offs];
m_tilemap[1]->set_scrolly((offs + xscroll) & 63, yscroll);
}
}
else
@ -571,7 +574,6 @@ popmessage("%x %x %x %x",
m_tilemap[1]->set_scroll_rows(1);
m_tilemap[1]->set_scroll_cols(1);
xscroll = scrollram[0] + 256 * scrollram[1];
xscroll -= 6;
yscroll = m_ram[0x180c];
m_tilemap[1]->set_scrollx(0, xscroll);
m_tilemap[1]->set_scrolly(0, yscroll);
@ -581,15 +583,18 @@ popmessage("%x %x %x %x",
{
uint8_t *scrollram = &m_ram[0x3a00];
m_tilemap[2]->set_scroll_rows(256);
m_tilemap[2]->set_scroll_rows(32);
m_tilemap[2]->set_scroll_cols(1);
yscroll = m_ram[0x380c];
//
if (m_scrollctrl == 0x70) yscroll = m_ram[0x3823]; // hack for suratk 2nd boss rotating star field
//
m_tilemap[2]->set_scrolly(0, yscroll);
for (offs = 0; offs < 256; offs++)
yscroll /= 8;
for (offs = 0; offs < 32; offs++)
{
xscroll = scrollram[2 * (offs & 0xfff8) + 0] + 256 * scrollram[2 * (offs & 0xfff8) + 1];
xscroll -= 6;
m_tilemap[2]->set_scrollx((offs + yscroll) & 0xff, xscroll);
xscroll = scrollram[16 * offs + 0] + 256 * scrollram[16 * offs + 1];
m_tilemap[2]->set_scrollx((offs + yscroll) & 31, xscroll);
}
}
else if ((m_scrollctrl & 0x18) == 0x18)
@ -603,7 +608,6 @@ popmessage("%x %x %x %x",
for (offs = 0; offs < 256; offs++)
{
xscroll = scrollram[2 * offs + 0] + 256 * scrollram[2 * offs + 1];
xscroll -= 6;
m_tilemap[2]->set_scrollx((offs + yscroll) & 0xff, xscroll);
}
}
@ -612,14 +616,14 @@ popmessage("%x %x %x %x",
uint8_t *scrollram = &m_ram[0x3800];
m_tilemap[2]->set_scroll_rows(1);
m_tilemap[2]->set_scroll_cols(512);
m_tilemap[2]->set_scroll_cols(64);
xscroll = m_ram[0x3a00] + 256 * m_ram[0x3a01];
xscroll -= 6;
m_tilemap[2]->set_scrollx(0, xscroll);
for (offs = 0; offs < 512; offs++)
xscroll /= 8;
for (offs = 0; offs < 64; offs++)
{
yscroll = scrollram[offs / 8];
m_tilemap[2]->set_scrolly((offs + xscroll) & 0x1ff, yscroll);
yscroll = scrollram[offs];
m_tilemap[2]->set_scrolly((offs + xscroll) & 63, yscroll);
}
}
else
@ -629,7 +633,6 @@ popmessage("%x %x %x %x",
m_tilemap[2]->set_scroll_rows(1);
m_tilemap[2]->set_scroll_cols(1);
xscroll = scrollram[0] + 256 * scrollram[1];
xscroll -= 6;
yscroll = m_ram[0x380c];
m_tilemap[2]->set_scrollx(0, xscroll);
m_tilemap[2]->set_scrolly(0, yscroll);