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bus/heathzenith/h89/h_88_3.cpp: Connect interrupt lines (#12928)

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Mark Garlanger 2024-11-01 22:31:19 -05:00 committed by GitHub
parent 6f539d10d9
commit 74a0d801f8
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GPG key ID: B5690EEEBB952194
1 changed files with 76 additions and 4 deletions
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80
src/devices/bus/heathzenith/h89/h_88_3.cpp
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@ -51,6 +51,11 @@ protected:
u8 m_lp_int_idx;
u8 m_aux_int_idx;
u8 m_modem_int_idx;
int m_lp_intr;
int m_aux_intr;
int m_modem_intr;
private:
void lp_w(offs_t reg, u8 val);
u8 lp_r(offs_t reg);
@ -61,6 +66,8 @@ private:
void modem_w(offs_t reg, u8 val);
u8 modem_r(offs_t reg);
void update_intr(u8 level);
void lp_int(int data);
void aux_int(int data);
void modem_int(int data);
@ -89,7 +96,10 @@ h_88_3_device::h_88_3_device(const machine_config &mconfig, device_type type, co
m_modem(*this, "modem"),
m_cfg_lp(*this, "CFG_LP"),
m_cfg_aux(*this, "CFG_AUX"),
m_cfg_modem(*this, "CFG_MODEM")
m_cfg_modem(*this, "CFG_MODEM"),
m_lp_intr(0),
m_aux_intr(0),
m_modem_intr(0)
{
}
@ -172,6 +182,9 @@ void h_88_3_device::device_start()
save_item(NAME(m_aux_int_idx));
save_item(NAME(m_modem_enabled));
save_item(NAME(m_modem_int_idx));
save_item(NAME(m_lp_intr));
save_item(NAME(m_aux_intr));
save_item(NAME(m_modem_intr));
}
void h_88_3_device::device_reset()
@ -194,19 +207,78 @@ void h_88_3_device::device_reset()
m_modem_int_idx = BIT(cfg_modem, 1, 2);
}
void h_88_3_device::update_intr(u8 level)
{
// check for interrupt disabled
if (level == 0)
{
return;
}
// Handle multiple ports set to the same interrupt. If any are set, interrupt should be triggered
int data = 0;
if (m_lp_enabled && (m_lp_int_idx == level))
{
data |= m_lp_intr;
}
if (m_aux_enabled && (m_aux_int_idx == level))
{
data |= m_aux_intr;
}
if (m_modem_enabled && (m_modem_int_idx == level))
{
data |= m_modem_intr;
}
switch(level)
{
case 1:
set_slot_int3(data);
break;
case 2:
set_slot_int4(data);
break;
case 3:
set_slot_int5(data);
break;
}
}
void h_88_3_device::lp_int(int data)
{
m_int_cb[m_lp_int_idx](data);
if (!m_lp_enabled)
{
return;
}
m_lp_intr = data;
update_intr(m_lp_int_idx);
}
void h_88_3_device::aux_int(int data)
{
m_int_cb[m_aux_int_idx](data);
if (!m_aux_enabled)
{
return;
}
m_aux_intr = data;
update_intr(m_aux_int_idx);
}
void h_88_3_device::modem_int(int data)
{
m_int_cb[m_modem_int_idx](data);
if (!m_modem_enabled)
{
return;
}
m_modem_intr = data;
update_intr(m_modem_int_idx);
}
void h_88_3_device::device_add_mconfig(machine_config &config)