UINT8 z80sio_c_r(int which, int ch)
{
z80sio *sio = sios + which;
int reg = sio->regs[ch][0] & 7;
UINT8 result = sio->status[ch][reg];
/* switch off the register for live state changes */
switch (reg)
{
/* SIO read register 0 */
case 0:
result &= ~SIO_RR0_INT_PENDING;
if (z80sio_irq_state(which) & Z80_DAISY_INT)
result |= SIO_RR0_INT_PENDING;
break;
}
VPRINTF(("%04X:sio_reg_r(%c,%d) = %02x\n", activecpu_get_pc(), 'A' + ch, reg, sio->status[ch][reg]));
return sio->status[ch][reg];
}
INLINE void interrupt_check(z80sio *sio)
{
/* if we have a callback, update it with the current state */
if (sio->irq_cb != NULL)
(*sio->irq_cb)((z80sio_irq_state(sio - sios) & Z80_DAISY_INT) ? ASSERT_LINE : CLEAR_LINE);
}
