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machine/sis7018_audio: add game port

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This commit is contained in:
angelosa 2024-02-01 22:40:32 +01:00
parent cd3a489004
commit 03a13aba62
2 changed files with 61 additions and 16 deletions
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69
src/devices/machine/sis7018_audio.cpp
View File

@ -6,7 +6,7 @@ SiS 7018 Audio device (AC97 complaint)
TODO:
- Stub interface, to be improved;
- Reportedly based off Trident 4DWave technology;
- Reportedly based off Trident 4DWave technology, some registers effectively matches up;
**************************************************************************************************/
@ -32,7 +32,7 @@ DEFINE_DEVICE_TYPE(SIS7018_AUDIO, sis7018_audio_device, "sis7018_audio", "SiS 70
sis7018_audio_device::sis7018_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: pci_device(mconfig, SIS7018_AUDIO, tag, owner, clock)
, m_joy(*this, "pc_joy")
{
// 0x040100 - Multimedia device, audio device (vendor specific i/f)
// 0x01 - Rev 1
@ -41,15 +41,29 @@ sis7018_audio_device::sis7018_audio_device(const machine_config &mconfig, const
void sis7018_audio_device::device_add_mconfig(machine_config &config)
{
PC_JOY(config, m_joy);
// ...
}
// NOTE: prefer using Trident naming if a register is there too.
void sis7018_audio_device::config_map(address_map &map)
{
pci_device::config_map(map);
// map(0x003e, 0x003f) max latency min=0x02, max=0x18
map(0x40, 0xe3).rw(FUNC(sis7018_audio_device::unmap_log_r), FUNC(sis7018_audio_device::unmap_log_w));
map(0x48, 0xe3).rw(FUNC(sis7018_audio_device::unmap_log_r), FUNC(sis7018_audio_device::unmap_log_w));
map(0x44, 0x44).lrw8(
NAME([this] (offs_t offset) {
return m_legacy_io_base;
}),
NAME([this] (offs_t offset, u8 data) {
LOGIO("PCI $44: Legacy I/O base %02x\n", data);
m_legacy_io_base = data;
remap_cb();
})
);
// 0x45 Legacy DMA Decoding
// 0x46 PM_CFG Power Management Config (Legacy Control on Trident)
// PMC capability identifier
map(0xdc, 0xdf).r(FUNC(sis7018_audio_device::pmc_id_r));
@ -82,19 +96,14 @@ void sis7018_audio_device::io_map(address_map &map)
}
void sis7018_audio_device::map_extra(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space,
uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space)
{
// io_space->install_device(0, 0x03ff, *this, &sis7018_audio_device::io_map);
// TODO: legacy handling, including game port
}
void sis7018_audio_device::device_start()
{
pci_device::device_start();
add_map(256, M_IO, FUNC(sis7018_audio_device::io_map));
// not explicitly stated, assume 4096 size from the MEM decoding
add_map(4096, M_MEM, FUNC(sis7018_audio_device::memory_map));
// TODO: PCI regs 0x3e/0x3f max_lat = 0x18, min_gnt = 0x02
}
@ -104,10 +113,38 @@ void sis7018_audio_device::device_reset()
command = 0x0000;
status = 0x0000;
// INTB#
intr_pin = 2;
// INTA#
intr_pin = 1;
// TODO: can be written to with $46=1
subsystem_id = 0x10397018;
m_legacy_io_base = 0xe2; // 0xf0 on Trident
remap_cb();
}
void sis7018_audio_device::map_extra(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space,
uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space)
{
// if(BIT(m_legacy_io_base, 7))
// const u16 mpu401base_io_addr = 0x300 | (BIT(m_legacy_io_base, 6) ? 0x00 : 0x30);
if (BIT(m_legacy_io_base, 5))
{
const u16 gamebase_io_addr = 0x200 | (BIT(m_legacy_io_base, 4) << 3);
io_space->install_device(gamebase_io_addr, gamebase_io_addr | 0x7, *this, &sis7018_audio_device::gameport_map);
}
// if(BIT(m_legacy_io_base, 3))
// const u16 adlibbase_io_addr = 0x388 | (BIT(m_legacy_io_base, 2) << 2);
// if(BIT(m_legacy_io_base, 1))
// const u16 sbbase_io_addr = 0x200 | (BIT(m_legacy_io_base, 0) ? 0x20 : 0x40);
}
// 200h / 208h
void sis7018_audio_device::gameport_map(address_map &map)
{
map(0x00, 0x07).rw(m_joy, FUNC(pc_joy_device::joy_port_r), FUNC(pc_joy_device::joy_port_w));
}
/*
@ -116,11 +153,11 @@ void sis7018_audio_device::device_reset()
u8 sis7018_audio_device::unmap_log_r(offs_t offset)
{
LOGTODO("AUDIO Unemulated [%02x] R\n", offset + 0x40);
LOGTODO("AUDIO Unemulated [%02x] R\n", offset + 0x48);
return 0;
}
void sis7018_audio_device::unmap_log_w(offs_t offset, u8 data)
{
LOGTODO("AUDIO Unemulated [%02x] %02x W\n", offset + 0x40, data);
LOGTODO("AUDIO Unemulated [%02x] %02x W\n", offset + 0x48, data);
}

8
src/devices/machine/sis7018_audio.h
View File

@ -8,6 +8,8 @@
#include "pci.h"
#include "bus/pc_joy/pc_joy.h"
class sis7018_audio_device : public pci_device
{
public:
@ -31,14 +33,20 @@ protected:
void io_map(address_map &map);
private:
required_device<pc_joy_device> m_joy;
virtual u8 capptr_r() override;
void gameport_map(address_map &map);
u32 pmc_id_r();
// void pmc_status_r();
// u32 pmc_control(offs_t offset, u32 data, u32 mem_mask = ~0);
u8 unmap_log_r(offs_t offset);
void unmap_log_w(offs_t offset, u8 data);
u8 m_legacy_io_base = 0;
};
DECLARE_DEVICE_TYPE(SIS7018_AUDIO, sis7018_audio_device)