diff options
Diffstat (limited to 'src/mess/video/mz80.c')
-rw-r--r-- | src/mess/video/mz80.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/src/mess/video/mz80.c b/src/mess/video/mz80.c index 0f849b592e7..bcf756a3971 100644 --- a/src/mess/video/mz80.c +++ b/src/mess/video/mz80.c @@ -36,11 +36,10 @@ void mz80_state::video_start() m_p_chargen = memregion("chargen")->base(); } -SCREEN_UPDATE_IND16( mz80k ) +UINT32 mz80_state::screen_update_mz80k(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { - mz80_state *state = screen.machine().driver_data<mz80_state>(); - state->m_mz80k_vertical ^= 1; - state->m_mz80k_cursor_cnt++; + m_mz80k_vertical ^= 1; + m_mz80k_cursor_cnt++; UINT8 y,ra,chr,gfx; UINT16 x,sy=0,ma=0; @@ -52,8 +51,8 @@ SCREEN_UPDATE_IND16( mz80k ) for (x = ma; x < ma + 40; x++) { - chr = state->m_p_videoram[x]; - gfx = state->m_p_chargen[(chr<<3) | ra]; + chr = m_p_videoram[x]; + gfx = m_p_chargen[(chr<<3) | ra]; /* Display a scanline of a character */ *p++ = BIT(gfx, 7); @@ -72,11 +71,10 @@ SCREEN_UPDATE_IND16( mz80k ) } // same as above except bits are in reverse order -SCREEN_UPDATE_IND16( mz80kj ) +UINT32 mz80_state::screen_update_mz80kj(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { - mz80_state *state = screen.machine().driver_data<mz80_state>(); - state->m_mz80k_vertical ^= 1; - state->m_mz80k_cursor_cnt++; + m_mz80k_vertical ^= 1; + m_mz80k_cursor_cnt++; UINT8 y,ra,chr,gfx; UINT16 x,sy=0,ma=0; @@ -88,8 +86,8 @@ SCREEN_UPDATE_IND16( mz80kj ) for (x = ma; x < ma + 40; x++) { - chr = state->m_p_videoram[x]; - gfx = state->m_p_chargen[(chr<<3) | ra]; + chr = m_p_videoram[x]; + gfx = m_p_chargen[(chr<<3) | ra]; /* Display a scanline of a character */ *p++ = BIT(gfx, 0); @@ -108,13 +106,12 @@ SCREEN_UPDATE_IND16( mz80kj ) } // has twice as much video ram and uses a scroll register -SCREEN_UPDATE_IND16( mz80a ) +UINT32 mz80_state::screen_update_mz80a(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { - mz80_state *state = screen.machine().driver_data<mz80_state>(); - state->m_mz80k_vertical ^= 1; - state->m_mz80k_cursor_cnt++; + m_mz80k_vertical ^= 1; + m_mz80k_cursor_cnt++; UINT8 y,ra,chr,gfx; - UINT16 x,sy=0, ma=state->m_p_ram[0x17d] | (state->m_p_ram[0x17e] << 8); + UINT16 x,sy=0, ma=m_p_ram[0x17d] | (m_p_ram[0x17e] << 8); for(y = 0; y < 25; y++ ) { @@ -124,8 +121,8 @@ SCREEN_UPDATE_IND16( mz80a ) for (x = ma; x < ma + 40; x++) { - chr = state->m_p_videoram[x&0x7ff]; - gfx = state->m_p_chargen[(chr<<3) | ra]; + chr = m_p_videoram[x&0x7ff]; + gfx = m_p_chargen[(chr<<3) | ra]; /* Display a scanline of a character */ *p++ = BIT(gfx, 7); |