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Merged in changes from earlier commit.

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This commit is contained in:
Curt Coder 2009-02-09 10:09:19 +00:00
parent 08a218dc80
commit 87ba17e145
1 changed files with 16 additions and 13 deletions
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29
src/emu/machine/6850acia.c
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@ -183,8 +183,7 @@ static DEVICE_RESET( acia6850 )
{
acia_p->first_reset = 0;
acia_p->rts = 1;
RTS(acia_p->rts);
RTS(1);
}
else
{
@ -275,7 +274,6 @@ WRITE8_DEVICE_HANDLER( acia6850_ctrl_w )
int wordsel;
int divide;
acia_p->ctrl = data;
// Counter Divide Select Bits
@ -337,21 +335,26 @@ WRITE8_DEVICE_HANDLER( acia6850_ctrl_w )
break;
}
// After writing the word type, start receive clock
// After writing the word type, set the rx/tx clocks (provided the divide values have changed)
if (!acia_p->reset)
if ((acia_p->ctrl ^ data) & CR1_0)
{
if (acia_p->rx_clock)
if (!acia_p->reset)
{
attotime rx_period = attotime_mul(ATTOTIME_IN_HZ(acia_p->rx_clock), acia_p->divide);
timer_adjust_periodic(acia_p->rx_timer, rx_period, 0, rx_period);
}
if (acia_p->tx_clock)
{
attotime tx_period = attotime_mul(ATTOTIME_IN_HZ(acia_p->tx_clock), acia_p->divide);
timer_adjust_periodic(acia_p->tx_timer, tx_period, 0, tx_period);
if (acia_p->rx_clock)
{
attotime rx_period = attotime_mul(ATTOTIME_IN_HZ(acia_p->rx_clock), acia_p->divide);
timer_adjust_periodic(acia_p->rx_timer, rx_period, 0, rx_period);
}
if (acia_p->tx_clock)
{
attotime tx_period = attotime_mul(ATTOTIME_IN_HZ(acia_p->tx_clock), acia_p->divide);
timer_adjust_periodic(acia_p->tx_timer, tx_period, 0, tx_period);
}
}
}
acia_p->ctrl = data;
}