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[mess] force controller reset with sio reset (nw)

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cracyc 2013-01-26 16:26:25 +00:00
parent b9464c2a23
commit 7b1f94e316
1 changed files with 5 additions and 0 deletions
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5
src/emu/cpu/psx/sio.c
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@ -263,6 +263,11 @@ WRITE32_MEMBER( psxsio_device::write )
verboselog( machine(), 1, "psx_sio_w reset\n" ); verboselog( machine(), 1, "psx_sio_w reset\n" );
m_status |= SIO_STATUS_TX_EMPTY | SIO_STATUS_TX_RDY; m_status |= SIO_STATUS_TX_EMPTY | SIO_STATUS_TX_RDY;
m_status &= ~( SIO_STATUS_RX_RDY | SIO_STATUS_OVERRUN | SIO_STATUS_IRQ ); m_status &= ~( SIO_STATUS_RX_RDY | SIO_STATUS_OVERRUN | SIO_STATUS_IRQ );
// toggle DTR to reset controllers, Star Ocean 2, at least, requires it
// the precise mechanism of the reset is unknown
// maybe it's related to the bottom 2 bits of control which are usually set
output( m_tx ^ PSX_SIO_OUT_DTR, PSX_SIO_OUT_DTR );
} }
if( ( m_control & SIO_CONTROL_IACK ) != 0 ) if( ( m_control & SIO_CONTROL_IACK ) != 0 )
{ {