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k037122: added tilemap origin

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This commit is contained in:
Ville Linde 2021-06-14 18:21:39 +03:00
parent ecab14553a
commit 78500ef334
1 changed files with 13 additions and 7 deletions
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20
src/mame/video/k037122.cpp
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@ -55,6 +55,9 @@ Konami 037122
34 ---------------- -------------x-- CLUT location
---------------- -------------0-- CLUT at 0x00000-0x08000
---------------- -------------1-- CLUT at 0x18000-0x20000
---------------x ---------------- Tilemap Y origin
---------------0 ---------------- Origin at tilemap center
---------------1 ---------------- Origin at 0
Other bits/registers unknown, some registers are used
@ -170,15 +173,13 @@ void k037122_device::tile_draw( screen_device &screen, bitmap_rgb32 &bitmap, con
int16_t incxx = m_reg[0xa] >> 16;
int16_t incxy = m_reg[0xa] & 0xffff;
int16_t incyx = m_reg[0x9] >> 16;
int16_t incyy = m_reg[0x9] & 0xffff;
// on 256x64 tilemap y-scroll seems to be 8.4 fixed point instead
int16_t scrolly_256 = scrolly;
if (scrolly_256 & 0x800)
scrolly_256 |= 0xf000;
int16_t incyy = m_reg[0x9] & 0xffff;
if (m_reg[0xc] & 0x10000)
{
if ((m_reg[0xd] & 0x10000) == 0)
scrolly -= 0x2000;
m_tilemap_128->set_scrolldx(visarea.min_x, visarea.min_x);
m_tilemap_128->set_scrolldy(visarea.min_y, visarea.min_y);
@ -188,10 +189,13 @@ void k037122_device::tile_draw( screen_device &screen, bitmap_rgb32 &bitmap, con
}
else
{
if ((m_reg[0xd] & 0x10000) == 0)
scrolly -= 0x1000;
m_tilemap_256->set_scrolldx(visarea.min_x, visarea.min_x);
m_tilemap_256->set_scrolldy(visarea.min_y, visarea.min_y);
m_tilemap_256->draw_roz(screen, bitmap, cliprect, (int32_t)(scrollx) << 12, (int32_t)(scrolly_256) << 12,
m_tilemap_256->draw_roz(screen, bitmap, cliprect, (int32_t)(scrollx) << 12, (int32_t)(scrolly) << 12,
(int32_t)(incxx) << 4, (int32_t)(incxy) << 4, (int32_t)(incyx) << 4, (int32_t)(incyy) << 4,
false, 0, 0);
}
@ -253,6 +257,8 @@ uint32_t k037122_device::reg_r(offs_t offset)
void k037122_device::reg_w(offs_t offset, uint32_t data, uint32_t mem_mask)
{
if (offset != 4)
printf("reg_w: %08X, %08X, %08X\n", data, offset, mem_mask);
if (offset == 0x34/4 && ACCESSING_BITS_0_15)
{
uint32_t palette_base = (data & 0x4) ? 0x18000 : 0x00000;