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Added serial input

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This commit is contained in:
Ted Green 2017-03-17 13:56:55 -06:00
parent 32f4e130ee
commit d441cbdd2d
1 changed files with 33 additions and 9 deletions
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42
src/mame/machine/midwayic.cpp
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@ -777,9 +777,8 @@ void midway_ioasic_device::update_ioasic_irq()
uint16_t irqbits = 0x2000;
uint8_t new_state;
irqbits |= m_sound_irq_state;
if (m_reg[IOASIC_UARTIN] & 0x1000)
irqbits |= 0x1000;
irqbits |= m_sound_irq_state & 0xff;
irqbits |= m_reg[IOASIC_UARTIN] & 0x3f00;
if (fifo_state & 8)
irqbits |= 0x0008;
if (irqbits)
@ -793,6 +792,8 @@ void midway_ioasic_device::update_ioasic_irq()
m_irq_state = new_state;
if (!m_irq_callback.isnull())
m_irq_callback(m_irq_state ? ASSERT_LINE : CLEAR_LINE);
if (m_irq_state && (m_reg[IOASIC_UARTIN] & 0x1000))
logerror("IOASIC: Asserting IRQ INTCTRL=%04x INTSTAT=%04X\n", m_reg[IOASIC_INTCTL], m_reg[IOASIC_INTSTAT]);
}
}
@ -1042,6 +1043,12 @@ READ32_MEMBER( midway_ioasic_device::read )
case IOASIC_UARTIN:
m_reg[offset] &= ~0x1000;
if (result & 0x1000)
logerror("%06X:ioasic_r(%d) = %08X\n", machine().device("maincpu")->safe_pc(), offset, result);
// Add lf
if ((result & 0xff)==0x0d)
m_reg[offset] = 0x300a;
update_ioasic_irq();
break;
case IOASIC_SOUNDSTAT:
@ -1087,7 +1094,7 @@ READ32_MEMBER( midway_ioasic_device::read )
}
if (LOG_IOASIC && offset != IOASIC_SOUNDSTAT && offset != IOASIC_SOUNDIN)
logerror("%06X:ioasic_r(%d) = %08X\n", space.device().safe_pc(), offset, result);
logerror("%08X:ioasic_r(%d) = %08X\n", space.device().safe_pc(), offset, result);
return result;
}
@ -1103,8 +1110,18 @@ WRITE32_MEMBER( midway_ioasic_device::packed_w )
WRITE8_MEMBER(midway_ioasic_device::serial_rx_w)
{
m_reg[IOASIC_UARTIN] = data | 0x1000;
update_ioasic_irq();
// Break Detect 0x0100
// Frame Error 0x0200
// Overrun 0x0400
// Rx FIFO FULL 0x0800
// Rx Ready 0x1000
// Tx EMPTY 0x2000
// CTS IN 0x4000
// CTS OUT 0x8000
if (m_reg[IOASIC_UARTCONTROL] & 0x200) {
m_reg[IOASIC_UARTIN] = data | 0x3000;
update_ioasic_irq();
}
}
@ -1140,20 +1157,27 @@ WRITE32_MEMBER( midway_ioasic_device::write )
break;
break;
case IOASIC_UARTCONTROL:
logerror("%08X IOASIC uart control = %04X INTCTRL=%04x\n", machine().device("maincpu")->safe_pc(), data, m_reg[IOASIC_INTCTL]);
break;
case IOASIC_UARTOUT:
if (m_reg[IOASIC_UARTCONTROL] & 0x800)
{
/* we're in loopback mode -- copy to the input */
m_reg[IOASIC_UARTIN] = (newreg & 0x00ff) | 0x1000;
m_reg[IOASIC_UARTIN] = (newreg & 0x00ff) | 0x3000;
update_ioasic_irq();
}
else {
m_serial_tx_cb(data & 0xff);
m_serial_tx_cb(data);
m_reg[IOASIC_UARTIN] |= 0x2000;
update_ioasic_irq();
if (PRINTF_DEBUG) {
osd_printf_info("%c", data & 0xff);
logerror("%c", data & 0xff);
}
}
//logerror("IOASIC uart tx data = %04X\n", data);
break;
case IOASIC_SOUNDCTL:
@ -1209,7 +1233,7 @@ WRITE32_MEMBER( midway_ioasic_device::write )
/* bit 7 = sound output buffer empty */
/* bit 14 = LED? */
if (LOG_IOASIC && ((oldreg ^ newreg) & 0x3ff6))
logerror("IOASIC int control = %04X\n", data);
logerror("IOASIC interrupt control = %04X\n", data);
update_ioasic_irq();
break;