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Diffstat (limited to 'src/mame/drivers/blw700i.cpp')
-rw-r--r--src/mame/drivers/blw700i.cpp33
1 files changed, 14 insertions, 19 deletions
diff --git a/src/mame/drivers/blw700i.cpp b/src/mame/drivers/blw700i.cpp
index c5c8a0fd9b7..3552b957a64 100644
--- a/src/mame/drivers/blw700i.cpp
+++ b/src/mame/drivers/blw700i.cpp
@@ -122,29 +122,24 @@ void lw700i_state::video_start()
uint32_t lw700i_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint32_t *scanline;
- int x, y;
- uint8_t pixels;
static const uint32_t palette[2] = { 0xffffff, 0 };
- uint8_t *pVRAM = (uint8_t *)m_mainram.target();
+ uint8_t const *const pVRAM = (uint8_t *)m_mainram.target() + 0x3e200;
- pVRAM += 0x3e200;
-
- for (y = 0; y < 128; y++)
+ for (int y = 0; y < 128; y++)
{
- scanline = &bitmap.pix32(y);
- for (x = 0; x < 480/8; x++)
+ uint32_t *scanline = &bitmap.pix(y);
+ for (int x = 0; x < 480/8; x++)
{
- pixels = pVRAM[(y * (480/8)) + (BYTE_XOR_BE(x))];
-
- *scanline++ = palette[(pixels>>7)&1];
- *scanline++ = palette[(pixels>>6)&1];
- *scanline++ = palette[(pixels>>5)&1];
- *scanline++ = palette[(pixels>>4)&1];
- *scanline++ = palette[(pixels>>3)&1];
- *scanline++ = palette[(pixels>>2)&1];
- *scanline++ = palette[(pixels>>1)&1];
- *scanline++ = palette[(pixels&1)];
+ uint8_t const pixels = pVRAM[(y * (480/8)) + (BYTE_XOR_BE(x))];
+
+ *scanline++ = palette[BIT(pixels, 7)];
+ *scanline++ = palette[BIT(pixels, 6)];
+ *scanline++ = palette[BIT(pixels, 5)];
+ *scanline++ = palette[BIT(pixels, 4)];
+ *scanline++ = palette[BIT(pixels, 3)];
+ *scanline++ = palette[BIT(pixels, 2)];
+ *scanline++ = palette[BIT(pixels, 1)];
+ *scanline++ = palette[BIT(pixels, 0)];
}
}