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removed runtime ioport tag lookups [smf]

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This commit is contained in:
smf- 2013-01-26 14:16:03 +00:00
parent 7d5d93715d
commit 8de1cf4b4a
1 changed files with 53 additions and 5 deletions
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58
src/mess/drivers/clcd.c
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@ -15,8 +15,6 @@
#include "machine/6551acia.h"
#include "rendlay.h"
static const char *const keyColumns[] = { "COL0", "COL1", "COL2", "COL3", "COL4", "COL5", "COL6", "COL7" };
class clcd_state : public driver_device
{
public:
@ -24,7 +22,16 @@ public:
: driver_device(mconfig, type, tag),
m_ram(*this,"ram"),
keyClockState(0),
keyReadState(0)
keyReadState(0),
m_col0(*this,"COL0"),
m_col1(*this,"COL1"),
m_col2(*this,"COL2"),
m_col3(*this,"COL3"),
m_col4(*this,"COL4"),
m_col5(*this,"COL5"),
m_col6(*this,"COL6"),
m_col7(*this,"COL7"),
m_special(*this,"SPECIAL")
{
}
@ -68,6 +75,38 @@ public:
keyColumnSelect = data;
}
int read_column( int column )
{
switch( column )
{
case 0:
return m_col0->read();
case 1:
return m_col1->read();
case 2:
return m_col2->read();
case 3:
return m_col3->read();
case 4:
return m_col4->read();
case 5:
return m_col5->read();
case 6:
return m_col6->read();
case 7:
return m_col7->read();
}
return 0;
}
WRITE8_MEMBER( via0_pb_w )
{
int newKeyReadState = data & 1;
@ -77,13 +116,13 @@ public:
if( newKeyReadState != 0 )
{
keyData = ioport( "SPECIAL" )->read();
keyData = m_special->read();
for( int i = 0; i < 8; i++ )
{
if( ( keyColumnSelect & ( 128 >> i ) ) == 0 )
{
keyData |= ioport( keyColumns[ i ] )->read() << 8;
keyData |= read_column( i ) << 8;
}
}
@ -125,6 +164,15 @@ private:
int keyClockState;
int keyReadState;
virtual void palette_init();
required_ioport m_col0;
required_ioport m_col1;
required_ioport m_col2;
required_ioport m_col3;
required_ioport m_col4;
required_ioport m_col5;
required_ioport m_col6;
required_ioport m_col7;
required_ioport m_special;
};
static ADDRESS_MAP_START( clcd_mem, AS_PROGRAM, 8, clcd_state )