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piggypas.cpp: More documentation (nw)

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This commit is contained in:
AJR 2017-10-25 12:12:28 -04:00
parent 5b45e09d6b
commit e5a8a47af7
1 changed files with 2 additions and 1 deletions
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3
src/mame/drivers/piggypas.cpp
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@ -58,6 +58,7 @@ WRITE8_MEMBER(piggypas_state::ctrl_w)
WRITE8_MEMBER(piggypas_state::mcs51_tx_callback)
{
// Serial output driver is UCN5833A
output().set_digit_value(m_digit_idx++, BITSWAP8(data,7,6,4,3,2,1,0,5) & 0x7f);
}
@ -126,7 +127,7 @@ HD44780_PIXEL_UPDATE(piggypas_state::piggypas_pixel_update)
static MACHINE_CONFIG_START( piggypas )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", I80C31, XTAL_8_448MHz) // OKI M80C31
MCFG_CPU_ADD("maincpu", I80C31, XTAL_8_448MHz) // OKI M80C31F or M80C154S
MCFG_CPU_PROGRAM_MAP(piggypas_map)
MCFG_CPU_IO_MAP(piggypas_io)
MCFG_MCS51_SERIAL_TX_CB(WRITE8(piggypas_state, mcs51_tx_callback))