// license:BSD-3-Clause // copyright-holders:Olivier Galibert #include "emu.h" #include "i82439tx.h" DEFINE_DEVICE_TYPE(I82439TX, i82439tx_host_device, "i82439tx", "Intel 82439TX northbridge") void i82439tx_host_device::config_map(address_map &map) { pci_host_device::config_map(map); map(0x50, 0x50).rw(FUNC(i82439tx_host_device::pcon_r), FUNC(i82439tx_host_device::pcon_w)); map(0x52, 0x52).rw(FUNC(i82439tx_host_device::cc_r), FUNC(i82439tx_host_device::cc_w)); map(0x56, 0x56).rw(FUNC(i82439tx_host_device::dramec_r), FUNC(i82439tx_host_device::dramec_w)); map(0x57, 0x57).rw(FUNC(i82439tx_host_device::dramc_r), FUNC(i82439tx_host_device::dramc_w)); map(0x58, 0x5f).rw(FUNC(i82439tx_host_device::pam_r), FUNC(i82439tx_host_device::pam_w)); map(0x58, 0x58).rw(FUNC(i82439tx_host_device::dramt_r), FUNC(i82439tx_host_device::dramt_w)); map(0x60, 0x67).rw(FUNC(i82439tx_host_device::drb_r), FUNC(i82439tx_host_device::drb_w)); map(0x68, 0x68).rw(FUNC(i82439tx_host_device::drt_r), FUNC(i82439tx_host_device::drt_w)); map(0x69, 0x69).rw(FUNC(i82439tx_host_device::drat_r), FUNC(i82439tx_host_device::drat_w)); map(0x72, 0x72).rw(FUNC(i82439tx_host_device::smram_r), FUNC(i82439tx_host_device::smram_w)); map(0x90, 0x90).rw(FUNC(i82439tx_host_device::errcmd_r), FUNC(i82439tx_host_device::errcmd_w)); map(0x91, 0x91).rw(FUNC(i82439tx_host_device::errsts_r), FUNC(i82439tx_host_device::errsts_w)); map(0x92, 0x92).r(FUNC(i82439tx_host_device::errsyn_r)); } i82439tx_host_device::i82439tx_host_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : pci_host_device(mconfig, I82439TX, tag, owner, clock) , cpu(*this, finder_base::DUMMY_TAG) { } void i82439tx_host_device::set_ram_size(int _ram_size) { ram_size = _ram_size; } void i82439tx_host_device::device_start() { pci_host_device::device_start(); 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; status = 0x0010; ram.resize(ram_size/4); } void i82439tx_host_device::reset_all_mappings() { pci_host_device::reset_all_mappings(); } void i82439tx_host_device::device_reset() { pci_host_device::device_reset(); pcon = 0x00; cc = 0xa2; dramec = 0x00; dramc = 0x01; dramt = 0x00; memset(pam, 0x00, sizeof(pam)); memset(drb, 0x02, sizeof(drb)); drt = 0x00; drat = 0x00; smram = 0x02; errcmd = 0x00; errsts = 0x00; errsyn = 0x00; } void i82439tx_host_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, 0xffff, *static_cast(this), &pci_host_device::io_configuration_access_map); if((dramc & 0xc0) == 0x40) memory_space->install_ram (0x00000000, 0x0007ffff, &ram[0x00000000/4]); else memory_space->install_ram (0x00000000, 0x0009ffff, &ram[0x00000000/4]); if(smram & 0x40) memory_space->install_ram (0x000a0000, 0x000bffff, &ram[0x000a0000/4]); if(pam[1] & 0x01) memory_space->install_rom (0x000c0000, 0x000c3fff, &ram[0x000c0000/4]); if(pam[1] & 0x02) memory_space->install_writeonly(0x000c0000, 0x000c3fff, &ram[0x000c0000/4]); if(pam[1] & 0x10) memory_space->install_rom (0x000c4000, 0x000c7fff, &ram[0x000c4000/4]); if(pam[1] & 0x20) memory_space->install_writeonly(0x000c4000, 0x000c7fff, &ram[0x000c4000/4]); if(pam[2] & 0x01) memory_space->install_rom (0x000c8000, 0x000cbfff, &ram[0x000c8000/4]); if(pam[2] & 0x02) memory_space->install_writeonly(0x000c8000, 0x000cbfff, &ram[0x000c8000/4]); if(pam[2] & 0x10) memory_space->install_rom (0x000cc000, 0x000cffff, &ram[0x000cc000/4]); if(pam[2] & 0x20) memory_space->install_writeonly(0x000cc000, 0x000cffff, &ram[0x000cc000/4]); if(pam[3] & 0x01) memory_space->install_rom (0x000d0000, 0x000d3fff, &ram[0x000d0000/4]); if(pam[3] & 0x02) memory_space->install_writeonly(0x000d0000, 0x000d3fff, &ram[0x000d0000/4]); if(pam[3] & 0x10) memory_space->install_rom (0x000d4000, 0x000d7fff, &ram[0x000d4000/4]); if(pam[3] & 0x20) memory_space->install_writeonly(0x000d4000, 0x000d7fff, &ram[0x000d4000/4]); if(pam[4] & 0x01) memory_space->install_rom (0x000d8000, 0x000dbfff, &ram[0x000d8000/4]); if(pam[4] & 0x02) memory_space->install_writeonly(0x000d8000, 0x000dbfff, &ram[0x000d8000/4]); if(pam[4] & 0x10) memory_space->install_rom (0x000dc000, 0x000dffff, &ram[0x000dc000/4]); if(pam[4] & 0x20) memory_space->install_writeonly(0x000dc000, 0x000dffff, &ram[0x000dc000/4]); if(pam[5] & 0x01) memory_space->install_rom (0x000e0000, 0x000e3fff, &ram[0x000e0000/4]); if(pam[5] & 0x02) memory_space->install_writeonly(0x000e0000, 0x000e3fff, &ram[0x000e0000/4]); if(pam[5] & 0x10) memory_space->install_rom (0x000e4000, 0x000e7fff, &ram[0x000e4000/4]); if(pam[5] & 0x20) memory_space->install_writeonly(0x000e4000, 0x000e7fff, &ram[0x000e4000/4]); if(pam[6] & 0x01) memory_space->install_rom (0x000e8000, 0x000ebfff, &ram[0x000e8000/4]); if(pam[6] & 0x02) memory_space->install_writeonly(0x000e8000, 0x000ebfff, &ram[0x000e8000/4]); if(pam[6] & 0x10) memory_space->install_rom (0x000ec000, 0x000effff, &ram[0x000ec000/4]); if(pam[6] & 0x20) memory_space->install_writeonly(0x000ec000, 0x000effff, &ram[0x000ec000/4]); if(pam[0] & 0x10) memory_space->install_rom (0x000f0000, 0x000fffff, &ram[0x000f0000/4]); if(pam[0] & 0x20) memory_space->install_writeonly(0x000f0000, 0x000fffff, &ram[0x000f0000/4]); memory_space->install_ram (0x00100000, 0x00efffff, &ram[0x00100000/4]); if((dramc & 0xc0) != 0x80) memory_space->install_ram (0x00f00000, 0x00ffffff, &ram[0x00f00000/4]); memory_space->install_ram (0x01000000, ram_size-1, &ram[0x01000000/4]); } READ8_MEMBER (i82439tx_host_device::pcon_r) { return pcon; } WRITE8_MEMBER(i82439tx_host_device::pcon_w) { pcon = data; logerror("pcon = %02x\n", pcon); } READ8_MEMBER (i82439tx_host_device::cc_r) { return cc; } WRITE8_MEMBER(i82439tx_host_device::cc_w) { cc = data; logerror("cc = %02x\n", cc); } READ8_MEMBER (i82439tx_host_device::dramec_r) { return dramec; } WRITE8_MEMBER(i82439tx_host_device::dramec_w) { dramec = data; logerror("dramec = %02x\n", dramec); } READ8_MEMBER (i82439tx_host_device::dramc_r) { return dramc; } WRITE8_MEMBER(i82439tx_host_device::dramc_w) { dramc = data; logerror("dramc = %02x\n", dramc); remap_cb(); } READ8_MEMBER (i82439tx_host_device::dramt_r) { return dramt; } WRITE8_MEMBER(i82439tx_host_device::dramt_w) { dramt = data; logerror("dramt = %02x\n", dramt); } READ8_MEMBER (i82439tx_host_device::pam_r) { return pam[offset - 1]; } WRITE8_MEMBER(i82439tx_host_device::pam_w) { pam[offset - 1] = data; logerror("pam[%d] = %02x\n", offset - 1, pam[offset - 1]); remap_cb(); } READ8_MEMBER (i82439tx_host_device::drb_r) { return drb[offset]; } WRITE8_MEMBER(i82439tx_host_device::drb_w) { drb[offset] = data; logerror("drb[%d] = %02x\n", offset, drb[offset]); } READ8_MEMBER (i82439tx_host_device::drt_r) { return drt; } WRITE8_MEMBER(i82439tx_host_device::drt_w) { drt = data; logerror("drt = %02x\n", drt); } READ8_MEMBER (i82439tx_host_device::drat_r) { return drat; } WRITE8_MEMBER(i82439tx_host_device::drat_w) { drat = data; logerror("drat = %02x\n", drat); } READ8_MEMBER (i82439tx_host_device::smram_r) { return smram; } WRITE8_MEMBER(i82439tx_host_device::smram_w) { smram = data; logerror("smram = %02x\n", smram); remap_cb(); } READ8_MEMBER (i82439tx_host_device::errcmd_r) { return errcmd; } WRITE8_MEMBER(i82439tx_host_device::errcmd_w) { errcmd = data; logerror("errcmd = %02x\n", errcmd); } READ8_MEMBER (i82439tx_host_device::errsts_r) { return errsts; } WRITE8_MEMBER(i82439tx_host_device::errsts_w) { errsts = data; logerror("errsts = %02x\n", errsts); } READ8_MEMBER (i82439tx_host_device::errsyn_r) { return errsyn; }