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Fixed a bug in netlib's NE555 emulation

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This commit is contained in:
Couriersud 2013-10-06 11:35:56 +00:00
parent 61b4265747
commit a27b932e9d
1 changed files with 32 additions and 25 deletions
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57
src/emu/machine/net_lib.c
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@ -84,7 +84,7 @@ NETLIB_UPDATE_PARAM(netdev_clock)
NETLIB_UPDATE(netdev_clock)
{
m_Q.setToPS(!m_Q.new_Q(), m_inc );
m_Q.setToNoCheckPS(!m_Q.new_Q(), m_inc );
}
NETLIB_START(nicMultiSwitch)
@ -231,8 +231,9 @@ NETLIB_UPDATE(nicNE555N_MSTABLE)
{
update_param(); // FIXME : m_CV should be on a sub device ...
bool bthresh = (INPANALOG(m_THRESHOLD) > nicNE555N_cv(*this));
bool btrig = (INPANALOG(m_trigger) > nicNE555N_cv(*this) * 0.5);
double vt = nicNE555N_clamp(*this, nicNE555N_cv(*this), 0.7, 1.4);
bool bthresh = (INPANALOG(m_THRESHOLD) > vt);
bool btrig = (INPANALOG(m_trigger) > nicNE555N_clamp(*this, nicNE555N_cv(*this) * 0.5, 0.7, 1.4));
bool out = m_last;
if (!btrig)
@ -246,20 +247,23 @@ NETLIB_UPDATE(nicNE555N_MSTABLE)
if (!m_last && out)
{
double vt = nicNE555N_cv(*this);
double vl = m_VL.Value();
double time;
vt = nicNE555N_clamp(*this, vt, 0.7, 1.4);
// FIXME : m_CV should be on a sub device ...
// TI datasheet states minimum pulse of 10 us
if (vt<vl)
time = 0;
time = 10;
else
time = - log((m_VS.Value()-vt)/(m_VS.Value()-vl)) * m_R.Value() * m_C.Value();
{
time = - log((m_VS.Value()-vt)/(m_VS.Value()-vl)) * m_R.Value() * m_C.Value() * 1.0e6; // in us
if (time < 10.0)
time = 10.0;
}
m_Q.setToNoCheckPS(m_VS.Value() * 0.7, NLTIME_FROM_NS(100));
m_THRESHOLD_OUT.setToPS(m_VS.Value(), NLTIME_FROM_US(time * 1.0e6));
m_THRESHOLD_OUT.setToPS(m_VS.Value(), NLTIME_FROM_US(time ));
}
else if (m_last && !out)
{
@ -269,15 +273,6 @@ NETLIB_UPDATE(nicNE555N_MSTABLE)
m_last = out;
}
#if 0
NETLIB_TIMER_CALLBACK(nicNE555N_MSTABLE)
{
if (INPVAL(m_trigger))
m_Q.setToPS(0.25, NLTIME_FROM_NS(100));
m_fired = 1;
}
#endif
NETLIB_START(nic7404)
{
register_input("I1", m_I);
@ -522,10 +517,10 @@ NETLIB_START(nic7490)
register_input("R91", m_R91);
register_input("R92", m_R92);
register_output("QA", m_QA);
register_output("QB", m_QB);
register_output("QC", m_QC);
register_output("QD", m_QD);
register_output("QA", m_Q[0]);
register_output("QB", m_Q[1]);
register_output("QC", m_Q[2]);
register_output("QD", m_Q[3]);
}
NETLIB_UPDATE(nic7490)
@ -548,7 +543,7 @@ NETLIB_UPDATE(nic7490)
update_outputs();
}
}
#if 0
NETLIB_FUNC_VOID(nic7490, update_outputs)
{
m_QA.setToPS((m_cnt >> 0) & 1, NLTIME_FROM_NS(18));
@ -556,7 +551,19 @@ NETLIB_FUNC_VOID(nic7490, update_outputs)
m_QC.setToPS((m_cnt >> 2) & 1, NLTIME_FROM_NS(54));
m_QD.setToPS((m_cnt >> 3) & 1, NLTIME_FROM_NS(72));
}
#else
NETLIB_FUNC_VOID(nic7490, update_outputs)
{
static netlist_time delay[4] = { NLTIME_FROM_NS(18), NLTIME_FROM_NS(36), NLTIME_FROM_NS(54), NLTIME_FROM_NS(72) };
for (int i=0; i<4; i++)
m_Q[i].setToPS((m_cnt >> i) & 1, delay[i]);
//m_QA.setToPS((m_cnt >> 0) & 1, delay[0]);
//m_QB.setToPS((m_cnt >> 1) & 1, delay[1]);
//m_QC.setToPS((m_cnt >> 2) & 1, delay[2]);
//m_QD.setToPS((m_cnt >> 3) & 1, delay[3]);
}
#endif
#if 1
NETLIB_START(nic7493)
{
@ -595,12 +602,12 @@ NETLIB_UPDATE(nic7493)
{
//printf("%s reset\n", name());
A.m_I.inactivate();
A.m_Q.setToPS(0, NLTIME_FROM_NS(40));
B.m_I.inactivate();
B.m_Q.setToPS(0, NLTIME_FROM_NS(40));
C.m_I.inactivate();
C.m_Q.setToPS(0, NLTIME_FROM_NS(40));
D.m_I.inactivate();
A.m_Q.setToPS(0, NLTIME_FROM_NS(40));
B.m_Q.setToPS(0, NLTIME_FROM_NS(40));
C.m_Q.setToPS(0, NLTIME_FROM_NS(40));
D.m_Q.setToPS(0, NLTIME_FROM_NS(40));
}
else