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am9517a: sync with MESS changes (nw)

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This commit is contained in:
R. Belmont 2012-07-25 13:27:08 +00:00
parent a664ac2015
commit 2c437a6d66
1 changed files with 21 additions and 2 deletions
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23
src/emu/machine/am9517a.c
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@ -118,6 +118,7 @@ inline void am9517a_device::dma_request(int channel, int state)
{
m_status &= ~(1 << (channel + 4));
}
trigger(1);
}
@ -142,7 +143,7 @@ inline bool am9517a_device::is_software_request_active(int channel)
//-------------------------------------------------
// set_hreq -
// set_hreq
//-------------------------------------------------
inline void am9517a_device::set_hreq(int state)
@ -498,6 +499,11 @@ void am9517a_device::execute_run()
}
}
}
if(m_state == STATE_SI)
{
suspend_until_trigger(1, true);
m_icount = 0;
}
break;
case STATE_S0:
@ -507,14 +513,25 @@ void am9517a_device::execute_run()
{
m_state = (MODE_MASK == MODE_CASCADE) ? STATE_SC : get_state1(true);
}
else
{
suspend_until_trigger(1, true);
m_icount = 0;
}
break;
case STATE_SC:
if (!is_request_active(m_current_channel))
{
set_hreq(0);
m_current_channel = -1;
m_state = STATE_SI;
}
else
{
suspend_until_trigger(1, true);
m_icount = 0;
}
set_dack();
break;
@ -649,7 +666,7 @@ READ8_MEMBER( am9517a_device::read )
data = m_status;
// clear TC bits
m_status &= 0x0f;
m_status &= 0xf0;
break;
case REGISTER_TEMPORARY:
@ -793,6 +810,7 @@ WRITE8_MEMBER( am9517a_device::write )
break;
}
}
trigger(1);
}
@ -805,6 +823,7 @@ WRITE_LINE_MEMBER( am9517a_device::hack_w )
if (LOG) logerror("AM9517A '%s' Hold Acknowledge: %u\n", tag(), state);
m_hack = state;
trigger(1);
}