diff options
Diffstat (limited to 'src/mame/drivers/att4425.cpp')
-rw-r--r-- | src/mame/drivers/att4425.cpp | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/src/mame/drivers/att4425.cpp b/src/mame/drivers/att4425.cpp index e574f006e55..b2033aa5f05 100644 --- a/src/mame/drivers/att4425.cpp +++ b/src/mame/drivers/att4425.cpp @@ -131,26 +131,26 @@ void att4425_state::video_start() uint32_t att4425_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { - uint8_t y, ra, gfx, fg, bg, chr, attr; - uint16_t sy = 0, ma, x, ca; + uint16_t sy = 0; - fg = 2; - bg = 0; + uint8_t fg = 2; + uint8_t bg = 0; - for (y = 0; y < 27; y++) + for (uint8_t y = 0; y < 27; y++) { - ma = 0x7e9c + 4 * (81 - 27 + y); + uint16_t ma = 0x7e9c + 4 * (81 - 27 + y); ma = (m_p_videoram[ma] << 8) + m_p_videoram[ma + 1] - 0x8000; - for (ra = 0; ra < 13; ra++) + for (uint8_t ra = 0; ra < 13; ra++) { - uint16_t *p = &bitmap.pix16(sy++); + uint16_t *p = &bitmap.pix(sy++); - for (x = ma; x < ma + 160; x += 2) + for (uint16_t x = ma; x < ma + 160; x += 2) { - chr = m_p_videoram[x + 1]; - attr = m_p_videoram[x]; - ca = (chr << 4) & 0x7f0; + uint8_t const chr = m_p_videoram[x + 1]; + uint8_t const attr = m_p_videoram[x]; + uint16_t ca = (chr << 4) & 0x7f0; + uint8_t gfx; // font 2 if (attr & 0x01) @@ -178,9 +178,8 @@ uint32_t att4425_state::screen_update(screen_device &screen, bitmap_ind16 &bitma /* Display a scanline of a character */ for (int i = 7; i >= 0; i--) - { *p++ = BIT(gfx, i) ? fg : bg; - } + *p++ = bg; } } |