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-netlist: Properly fixed 74165 implementation. Fixed MK28000 address latching.

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This commit is contained in:
Ryan Holtz 2020-08-17 16:24:46 +02:00
parent dd47a15e3a
commit 96921ccac9
2 changed files with 8 additions and 16 deletions
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9
src/lib/netlist/devices/nld_74165.cpp
View File

@ -56,7 +56,6 @@ namespace netlist
NETLIB_HANDLERI(inputs)
{
{
netlist_sig_t old_qh = m_QH.net().Q();
netlist_sig_t qh = 0;
if (!m_SH_LDQ())
@ -65,12 +64,7 @@ namespace netlist
for (std::size_t i=0; i<8; i++)
m_shifter |= (m_DATA[i]() << i);
}
else if (!m_CLK() || m_CLKINH())
{
// FIXME: qh is overwritten below?
qh = old_qh;
}
else if (!m_last_CLK)
else if (m_CLK() && !m_last_CLK && !m_CLKINH())
{
unsigned high_bit = m_SER() ? 0x80 : 0;
m_shifter = high_bit | (m_shifter >> 1);
@ -81,6 +75,7 @@ namespace netlist
m_last_CLK = m_CLK();
m_QH.push(qh, NLTIME_FROM_NS(20)); // FIXME: Timing
m_QHQ.push(1 - qh, NLTIME_FROM_NS(20)); // FIXME: Timing
}
}

15
src/lib/netlist/devices/nld_roms.cpp
View File

@ -31,7 +31,7 @@ namespace netlist
, m_enable_hi(*this, "m_enable_hi", false)
, m_latched_rom(*this, "m_latched_rom", 0)
, m_A(*this, 1, "A{}", NETLIB_DELEGATE(addr))
, m_ARQ(*this, "ARQ", NETLIB_DELEGATE(arq))
, m_ARQ(*this, "ARQ", NETLIB_DELEGATE(addr))
, m_OE1(*this, "OE1", NETLIB_DELEGATE(oe1))
, m_OE2(*this, "OE2", NETLIB_DELEGATE(oe2))
, m_O(*this, 1, "O{}", 0)
@ -41,14 +41,6 @@ namespace netlist
}
private:
inline NETLIB_HANDLERI(arq)
{
if (m_ARQ() == 0)
{
m_latched_rom = m_ROM[m_A()];
}
}
inline NETLIB_HANDLERI(oe1)
{
m_enable_lo = m_OE1();
@ -73,6 +65,11 @@ namespace netlist
inline NETLIB_HANDLERI(addr)
{
if (!m_ARQ())
{
uint16_t addr = m_A();
m_latched_rom = m_ROM[addr];
}
uint8_t o = (m_enable_hi || m_enable_lo) ? m_latched_rom : 0;
for (std::size_t i=0; i<4; i++)
{