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(MESS) bcs3: Less tag lookup. (nw)

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This commit is contained in:
Curt Coder 2014-03-31 12:48:34 +00:00
parent b051f24fd5
commit d0f9f71af8
1 changed files with 35 additions and 16 deletions
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51
src/mess/drivers/bcs3.c
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@ -25,11 +25,31 @@ public:
bcs3_state(const machine_config &mconfig, device_type type, const char *tag) bcs3_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag), : driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"), m_maincpu(*this, "maincpu"),
m_p_videoram(*this, "videoram"){ } m_p_chargen(*this, "chargen"),
m_p_videoram(*this, "videoram"),
m_io_line0(*this, "LINE0"),
m_io_line1(*this, "LINE1"),
m_io_line2(*this, "LINE2"),
m_io_line3(*this, "LINE3"),
m_io_line4(*this, "LINE4"),
m_io_line5(*this, "LINE5"),
m_io_line6(*this, "LINE6"),
m_io_line7(*this, "LINE7"),
m_io_line8(*this, "LINE8")
{ }
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
const UINT8 *m_p_chargen; required_memory_region m_p_chargen;
required_shared_ptr<UINT8> m_p_videoram; required_shared_ptr<UINT8> m_p_videoram;
required_ioport m_io_line0;
required_ioport m_io_line1;
required_ioport m_io_line2;
required_ioport m_io_line3;
required_ioport m_io_line4;
required_ioport m_io_line5;
required_ioport m_io_line6;
required_ioport m_io_line7;
required_ioport m_io_line8;
DECLARE_READ8_MEMBER(bcs3_keyboard_r); DECLARE_READ8_MEMBER(bcs3_keyboard_r);
virtual void machine_reset(); virtual void machine_reset();
virtual void video_start(); virtual void video_start();
@ -44,23 +64,23 @@ READ8_MEMBER( bcs3_state::bcs3_keyboard_r )
UINT8 data = 0; UINT8 data = 0;
if (~offset & 0x01) if (~offset & 0x01)
data |= ioport("LINE0")->read(); data |= m_io_line0->read();
if (~offset & 0x02) if (~offset & 0x02)
data |= ioport("LINE1")->read(); data |= m_io_line1->read();
if (~offset & 0x04) if (~offset & 0x04)
data |= ioport("LINE2")->read(); data |= m_io_line2->read();
if (~offset & 0x08) if (~offset & 0x08)
data |= ioport("LINE3")->read(); data |= m_io_line3->read();
if (~offset & 0x10) if (~offset & 0x10)
data |= ioport("LINE4")->read(); data |= m_io_line4->read();
if (~offset & 0x20) if (~offset & 0x20)
data |= ioport("LINE5")->read(); data |= m_io_line5->read();
if (~offset & 0x40) if (~offset & 0x40)
data |= ioport("LINE6")->read(); data |= m_io_line6->read();
if (~offset & 0x80) if (~offset & 0x80)
data |= ioport("LINE7")->read(); data |= m_io_line7->read();
if (~offset & 0x100) if (~offset & 0x100)
data |= ioport("LINE8")->read(); data |= m_io_line8->read();
return data; return data;
} }
@ -219,7 +239,6 @@ void bcs3_state::machine_reset()
void bcs3_state::video_start() void bcs3_state::video_start()
{ {
m_p_chargen = memregion("chargen")->base();
} }
UINT32 bcs3_state::screen_update_bcs3(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) UINT32 bcs3_state::screen_update_bcs3(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
@ -241,7 +260,7 @@ UINT32 bcs3_state::screen_update_bcs3(screen_device &screen, bitmap_ind16 &bitma
chr = m_p_videoram[x] & 0x7f; chr = m_p_videoram[x] & 0x7f;
/* get pattern of pixels for that character scanline */ /* get pattern of pixels for that character scanline */
gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; gfx = m_p_chargen->base()[(chr<<3) | rat ] ^ 0xff;
} }
else else
gfx = 0xff; gfx = 0xff;
@ -286,7 +305,7 @@ UINT32 bcs3_state::screen_update_bcs3a(screen_device &screen, bitmap_ind16 &bitm
chr = m_p_videoram[x] & 0x7f; chr = m_p_videoram[x] & 0x7f;
/* get pattern of pixels for that character scanline */ /* get pattern of pixels for that character scanline */
gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; gfx = m_p_chargen->base()[(chr<<3) | rat ] ^ 0xff;
} }
else else
gfx = 0xff; gfx = 0xff;
@ -329,7 +348,7 @@ UINT32 bcs3_state::screen_update_bcs3b(screen_device &screen, bitmap_ind16 &bitm
chr = m_p_videoram[x] & 0x7f; chr = m_p_videoram[x] & 0x7f;
/* get pattern of pixels for that character scanline */ /* get pattern of pixels for that character scanline */
gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; gfx = m_p_chargen->base()[(chr<<3) | rat ] ^ 0xff;
} }
else else
gfx = 0xff; gfx = 0xff;
@ -372,7 +391,7 @@ UINT32 bcs3_state::screen_update_bcs3c(screen_device &screen, bitmap_ind16 &bitm
chr = m_p_videoram[x] & 0x7f; chr = m_p_videoram[x] & 0x7f;
/* get pattern of pixels for that character scanline */ /* get pattern of pixels for that character scanline */
gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; gfx = m_p_chargen->base()[(chr<<3) | rat ] ^ 0xff;
} }
else else
gfx = 0xff; gfx = 0xff;