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vis: more pad work

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This commit is contained in:
cracyc 2022-01-24 20:22:24 -06:00
parent 08aaa2c754
commit c97648bf5f
1 changed files with 11 additions and 7 deletions
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18
src/mame/drivers/vis.cpp
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@ -395,16 +395,16 @@ void vis_vga_device::vga_vh_yuv422(bitmap_rgb32 &bitmap, const rectangle &clipre
curr_addr = addr; curr_addr = addr;
if((line + yi) == (vga.crtc.line_compare & 0x3ff)) if((line + yi) == (vga.crtc.line_compare & 0x3ff))
curr_addr = 0; curr_addr = 0;
for (int pos=curr_addr, col=0, column=0; column<(vga.crtc.horz_disp_end+1); column++, col+=8, pos+=16) for (int pos=curr_addr, col=0, column=0; column<(vga.crtc.horz_disp_end+1); column++, col+=8, pos+=8)
{ {
if(pos + 0x08 > 0x80000) if(pos + 0x08 > 0x80000)
return; return;
for(int xi=0,xm=0;xi<8;xi+=2,xm+=4) for(int xi=0;xi<8;xi+=4)
{ {
if(!screen().visible_area().contains(col+xi, line + yi)) if(!screen().visible_area().contains(col+xi, line + yi))
continue; continue;
uint8_t y0 = vga.memory[pos + xm + 0], ub = vga.memory[pos + xm + 1]; uint8_t y0 = vga.memory[pos + xi + 0], ub = vga.memory[pos + xi + 1];
uint8_t y1 = vga.memory[pos + xm + 2], vb = vga.memory[pos + xm + 3]; uint8_t y1 = vga.memory[pos + xi + 2], vb = vga.memory[pos + xi + 3];
uint16_t u, v; uint16_t u, v;
if(col) if(col)
{ {
@ -417,8 +417,11 @@ void vis_vga_device::vga_vh_yuv422(bitmap_rgb32 &bitmap, const rectangle &clipre
v = vb; v = vb;
} }
ua = ub; va = vb; ua = ub; va = vb;
// this reads one byte per clock so it'll be one pixel for every 2 clocks
bitmap.pix(line + yi, col + xi + 0) = IV | (uint32_t)yuv_to_rgb(y0, u, v); bitmap.pix(line + yi, col + xi + 0) = IV | (uint32_t)yuv_to_rgb(y0, u, v);
bitmap.pix(line + yi, col + xi + 1) = IV | (uint32_t)yuv_to_rgb(y1, ub, vb); bitmap.pix(line + yi, col + xi + 1) = IV | (uint32_t)yuv_to_rgb(y0, u, v);
bitmap.pix(line + yi, col + xi + 2) = IV | (uint32_t)yuv_to_rgb(y1, ub, vb);
bitmap.pix(line + yi, col + xi + 3) = IV | (uint32_t)yuv_to_rgb(y1, ub, vb);
} }
} }
} }
@ -802,6 +805,7 @@ INPUT_CHANGED_MEMBER(vis_state::update)
{ {
m_pic1->ir3_w(ASSERT_LINE); m_pic1->ir3_w(ASSERT_LINE);
m_padstat = 0x80; m_padstat = 0x80;
m_padsel = false;
} }
//chipset registers? //chipset registers?
@ -887,12 +891,12 @@ uint16_t vis_state::pad_r(offs_t offset)
if(!m_padsel) if(!m_padsel)
{ {
ret = m_pad->read(); ret = m_pad->read();
m_padstat = 0;
m_padsel = true; m_padsel = true;
} }
else else
{ {
ret = 0x400; ret = 0x400; // this is probably for the second controller
m_padstat = 0;
m_padsel = false; m_padsel = false;
} }
m_pic1->ir3_w(CLEAR_LINE); m_pic1->ir3_w(CLEAR_LINE);