diff options
Diffstat (limited to 'src/mame/drivers/blw700i.cpp')
-rw-r--r-- | src/mame/drivers/blw700i.cpp | 33 |
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)]; } } |