diff options
Diffstat (limited to 'src/emu/machine/i82875p.c')
-rw-r--r-- | src/emu/machine/i82875p.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/emu/machine/i82875p.c b/src/emu/machine/i82875p.c new file mode 100644 index 00000000000..9df538d9209 --- /dev/null +++ b/src/emu/machine/i82875p.c @@ -0,0 +1,71 @@ +#include "i82875p.h" + +const device_type I82875P_HOST = &device_creator<i82875p_host_device>; +const device_type I82875P_AGP = &device_creator<i82875p_agp_device>; + +DEVICE_ADDRESS_MAP_START(agp_translation_map, 32, i82875p_host_device) +ADDRESS_MAP_END + +i82875p_host_device::i82875p_host_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : pci_host_device(mconfig, I82875P_HOST, "i82875p northbridge", tag, owner, clock, "i82875p_host", __FILE__) +{ +} + +void i82875p_host_device::set_cpu_tag(const char *_cpu_tag) +{ + cpu_tag = _cpu_tag; +} + +void i82875p_host_device::set_ram_size(int _ram_size) +{ + ram_size = _ram_size; +} + +void i82875p_host_device::device_start() +{ + pci_host_device::device_start(); + cpu = machine().device<cpu_device>(cpu_tag); + memory_space = &cpu->space(AS_PROGRAM); + io_space = &cpu->space(AS_IO); + + memory_window_start = 0; + memory_window_end = 0xffffffff; + memory_offset = 0; + io_window_start = 0; + io_window_end = 0xffff; + io_offset = 0; + + ram.resize(ram_size/4); + + // Resizeable with the apsize register + add_map(256*1024*1024, M_MEM, FUNC(i82875p_host_device::agp_translation_map)); +} + +void i82875p_host_device::device_reset() +{ + pci_host_device::device_reset(); +} + +void i82875p_host_device::map_extra(UINT64 memory_window_start, UINT64 memory_window_end, UINT64 memory_offset, address_space *memory_space, + UINT64 io_window_start, UINT64 io_window_end, UINT64 io_offset, address_space *io_space) +{ + io_space->install_device(0, 0xffff, *static_cast<pci_host_device *>(this), &pci_host_device::io_configuration_access_map); +} + + + + +i82875p_agp_device::i82875p_agp_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : agp_bridge_device(mconfig, I82875P_AGP, "i82875p AGP bridge", tag, owner, clock, "i82875p_agp", __FILE__) +{ +} + +void i82875p_agp_device::device_start() +{ + agp_bridge_device::device_start(); +} + +void i82875p_agp_device::device_reset() +{ + agp_bridge_device::device_reset(); +} |