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Keyboard I/O speed up.

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This commit is contained in:
Jean-François DEL NERO 2015-12-19 14:29:24 +01:00
parent b9871d9c45
commit e1ef4d2149
1 changed files with 9 additions and 3 deletions
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12
src/mame/drivers/squale.cpp
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@ -232,18 +232,24 @@ READ8_MEMBER( squale_state::pia_u75_porta_r )
READ8_MEMBER( squale_state::pia_u75_portb_r ) READ8_MEMBER( squale_state::pia_u75_portb_r )
{ {
// U75 PIA Port B : Keyboard column input // U75 PIA Port B : Keyboard column input
char kbdrow[6]; char kbdrow[3];
unsigned char kbdrow_state;
UINT8 data = 0xFF; UINT8 data = 0xFF;
kbdrow[0] = 'X';
kbdrow[1] = '0';
kbdrow[2] = 0;
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
{ {
sprintf(kbdrow,"X%X",i); kbdrow[1] = '0' + i;
kbdrow_state = ioport(kbdrow)->read();
for( int j = 0; j < 8 ; j++) for( int j = 0; j < 8 ; j++)
{ {
if( !(keyboard_line & (0x01<<j)) ) if( !(keyboard_line & (0x01<<j)) )
{ {
if ( ioport(kbdrow)->read() & (0x01<<j) ) if ( kbdrow_state & (0x01<<j) )
{ {
data &= ~( 0x01 << i); data &= ~( 0x01 << i);
} }