piggypas.cpp: More documentation (nw)
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@ -58,6 +58,7 @@ WRITE8_MEMBER(piggypas_state::ctrl_w)
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WRITE8_MEMBER(piggypas_state::mcs51_tx_callback)
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WRITE8_MEMBER(piggypas_state::mcs51_tx_callback)
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{
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{
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// Serial output driver is UCN5833A
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output().set_digit_value(m_digit_idx++, BITSWAP8(data,7,6,4,3,2,1,0,5) & 0x7f);
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output().set_digit_value(m_digit_idx++, BITSWAP8(data,7,6,4,3,2,1,0,5) & 0x7f);
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}
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}
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@ -126,7 +127,7 @@ HD44780_PIXEL_UPDATE(piggypas_state::piggypas_pixel_update)
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static MACHINE_CONFIG_START( piggypas )
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static MACHINE_CONFIG_START( piggypas )
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/* basic machine hardware */
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", I80C31, XTAL_8_448MHz) // OKI M80C31
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MCFG_CPU_ADD("maincpu", I80C31, XTAL_8_448MHz) // OKI M80C31F or M80C154S
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MCFG_CPU_PROGRAM_MAP(piggypas_map)
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MCFG_CPU_PROGRAM_MAP(piggypas_map)
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MCFG_CPU_IO_MAP(piggypas_io)
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MCFG_CPU_IO_MAP(piggypas_io)
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MCFG_MCS51_SERIAL_TX_CB(WRITE8(piggypas_state, mcs51_tx_callback))
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MCFG_MCS51_SERIAL_TX_CB(WRITE8(piggypas_state, mcs51_tx_callback))
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