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machine/sis85c496: add int pin mapper

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This commit is contained in:
angelosa 2024-03-04 02:35:14 +01:00
parent b22372ec49
commit 1565fb9ba6
3 changed files with 133 additions and 0 deletions
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115
src/devices/machine/sis85c496.cpp
View File

@ -34,6 +34,7 @@ void sis85c496_host_device::config_map(address_map &map)
);
map(0x58, 0x59).rw(FUNC(sis85c496_host_device::ide_vesa_config_r), FUNC(sis85c496_host_device::ide_vesa_config_w));
map(0x5a, 0x5a).rw(FUNC(sis85c496_host_device::smram_ctrl_r), FUNC(sis85c496_host_device::smram_ctrl_w));
map(0xc0, 0xc3).rw(FUNC(sis85c496_host_device::pirqrc_r), FUNC(sis85c496_host_device::pirqrc_w));
map(0xc8, 0xcb).rw(FUNC(sis85c496_host_device::mailbox_r), FUNC(sis85c496_host_device::mailbox_w));
map(0xd0, 0xd0).rw(FUNC(sis85c496_host_device::bios_config_r), FUNC(sis85c496_host_device::bios_config_w));
map(0xd1, 0xd1).rw(FUNC(sis85c496_host_device::isa_decoder_r), FUNC(sis85c496_host_device::isa_decoder_w));
@ -194,6 +195,9 @@ void sis85c496_host_device::device_start()
set_spaces(&m_maincpu->space(AS_PROGRAM), &m_maincpu->space(AS_IO));
m_pci_root->set_pin_mapper(pci_pin_mapper(*this, FUNC(sis85c496_host_device::pin_mapper)));
m_pci_root->set_irq_handler(pci_irq_handler(*this, FUNC(sis85c496_host_device::irq_handler)));
memory_window_start = 0;
memory_window_end = 0xffffffff;
memory_offset = 0;
@ -235,6 +239,8 @@ void sis85c496_host_device::device_reset()
m_shadctrl = 0;
m_smramctrl = 0;
m_ide_vesa_ctrl = 0;
memset(m_pirqrc, 0x80, sizeof(m_pirqrc));
}
void sis85c496_host_device::device_config_complete()
@ -596,6 +602,115 @@ void sis85c496_host_device::pc_irq12m_w(int state) { m_pic8259_slave->ir4_w(stat
void sis85c496_host_device::pc_irq14_w(int state) { m_pic8259_slave->ir6_w(state); }
void sis85c496_host_device::pc_irq15_w(int state) { m_pic8259_slave->ir7_w(state); }
uint8_t sis85c496_host_device::pirqrc_r(offs_t offset)
{
return m_pirqrc[offset];
}
void sis85c496_host_device::pirqrc_w(offs_t offset, uint8_t data)
{
m_pirqrc[offset] = data;
logerror("pirqrc[%d] = %02x\n", offset, m_pirqrc[offset]);
}
int sis85c496_host_device::pin_mapper(int pin)
{
if(pin < 0 || pin >= 4 || (m_pirqrc[pin] & 0x80))
return -1;
return m_pirqrc[pin];
}
void sis85c496_host_device::irq_handler(int line, int state)
{
if(line < 0 && line >= 16)
return;
logerror("irq_handler %d %d\n", line, state);
redirect_irq(line, state);
}
void sis85c496_host_device::pc_pirqa_w(int state)
{
int irq = m_pirqrc[0] & 15;
if (!(BIT(m_pirqrc[0], 7)))
return;
redirect_irq(irq, state);
}
void sis85c496_host_device::pc_pirqb_w(int state)
{
int irq = m_pirqrc[1] & 15;
if (!(BIT(m_pirqrc[1], 7)))
return;
redirect_irq(irq, state);
}
void sis85c496_host_device::pc_pirqc_w(int state)
{
int irq = m_pirqrc[2] & 15;
if (!(BIT(m_pirqrc[2], 7)))
return;
redirect_irq(irq, state);
}
void sis85c496_host_device::pc_pirqd_w(int state)
{
int irq = m_pirqrc[3] & 15;
if (!(BIT(m_pirqrc[3], 7)))
return;
redirect_irq(irq, state);
}
void sis85c496_host_device::redirect_irq(int irq, int state)
{
switch (irq)
{
case 0:
case 1:
case 2:
case 8:
case 13:
break;
case 3:
m_pic8259_master->ir3_w(state);
break;
case 4:
m_pic8259_master->ir4_w(state);
break;
case 5:
m_pic8259_master->ir5_w(state);
break;
case 6:
m_pic8259_master->ir6_w(state);
break;
case 7:
m_pic8259_master->ir7_w(state);
break;
case 9:
m_pic8259_slave->ir1_w(state);
break;
case 10:
m_pic8259_slave->ir2_w(state);
break;
case 11:
m_pic8259_slave->ir3_w(state);
break;
case 12:
m_pic8259_slave->ir4_w(state);
break;
case 14:
m_pic8259_slave->ir6_w(state);
break;
case 15:
m_pic8259_slave->ir7_w(state);
break;
}
}
uint8_t sis85c496_host_device::at_portb_r()
{
uint8_t data = m_at_speaker;

14
src/devices/machine/sis85c496.h
View File

@ -46,6 +46,11 @@ public:
void set_cpu_tag(const char *tag);
void set_ram_size(int ram_size);
void pc_pirqa_w(int state);
void pc_pirqb_w(int state);
void pc_pirqc_w(int state);
void pc_pirqd_w(int state);
void pc_irq1_w(int state);
void pc_irq3_w(int state);
void pc_irq4_w(int state);
@ -104,6 +109,8 @@ private:
uint8_t m_channel_check;
uint8_t m_nmi_enabled;
uint8_t m_pirqrc[4];
int ram_size;
std::vector<uint32_t> ram;
uint32_t m_mailbox;
@ -175,6 +182,13 @@ private:
void pc_dma_write_word(offs_t offset, uint8_t data);
void cpu_a20_w(int state);
void cpu_reset_w(int state);
uint8_t pirqrc_r(offs_t offset);
void pirqrc_w(offs_t offset, uint8_t data);
void redirect_irq(int irq, int state);
int pin_mapper(int pin);
void irq_handler(int line, int state);
};
DECLARE_DEVICE_TYPE(SIS85C496_HOST, sis85c496_host_device)

4
src/mame/pc/pcipc_sis.cpp
View File

@ -16,6 +16,7 @@
#include "emu.h"
#include "bus/isa/isa_cards.h"
#include "bus/pci/pci_slot.h"
#include "bus/rs232/hlemouse.h"
#include "bus/rs232/null_modem.h"
#include "bus/rs232/rs232.h"
@ -158,6 +159,9 @@ void sis496_voodoo1_state::sis496_voodoo1(machine_config &config)
m_screen->set_size(640, 480);
m_screen->set_visarea(0, 640 - 1, 0, 480 - 1);
m_screen->set_screen_update(PCI_ID_VIDEO, FUNC(voodoo_1_pci_device::screen_update));
PCI_SLOT(config, "pci:1", pci_cards, 10, 0, 1, 2, 3, nullptr);
PCI_SLOT(config, "pci:2", pci_cards, 11, 1, 2, 3, 0, nullptr);
}
// generic placeholder for unknown BIOS types