// license:BSD-3-Clause // copyright-holders:Patrick Mackinlay /* * Motorola MVME180 * * Sources: * - OpenBSD 5.5 source code * * TODO: * - skeleton only */ #include "emu.h" #include "mvme180.h" #define VERBOSE 0 #include "logmacro.h" DEFINE_DEVICE_TYPE(VME_MVME180, vme_mvme180_card_device, "mvme180", "Motorola MVME180") vme_mvme180_card_device::vme_mvme180_card_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) : device_t(mconfig, VME_MVME180, tag, owner, clock) , device_vme_card_interface(mconfig, *this) , m_cpu(*this, "cpu") , m_mmu(*this, "mmu%u", 0U) , m_duart(*this, "duart") , m_serial(*this, "serial%u", 0U) , m_boot(*this, "boot") { } ROM_START(mvme180) ROM_REGION32_BE(0x40000, "eprom", 0) ROM_SYSTEM_BIOS(0, "v25", "180bug version 2.5 copyright 1988 Motorola") ROMX_LOAD("51_w5110b19_u34__8846__180bug_2.5.u34", 0x0003, 0x10000, CRC(9b4e483a) SHA1(c9b1e9e1735a015c38eb223ab126c40c40a9f89d), ROM_SKIP(3) | ROM_BIOS(0)) ROMX_LOAD("51_w5110b20_u35__8846__180bug_2.5.u35", 0x0002, 0x10000, CRC(1170b048) SHA1(ab8e2917c7150e4f74be600507690aa35444244c), ROM_SKIP(3) | ROM_BIOS(0)) ROMX_LOAD("51_w5110b21_u36__8846__180bug_2.5.u36", 0x0001, 0x10000, CRC(270fbc7b) SHA1(a61b8701c5f1133f930320f313309008ff5d5504), ROM_SKIP(3) | ROM_BIOS(0)) ROMX_LOAD("51_w5110b22_u37__8846__180bug_2.5.u37", 0x0000, 0x10000, CRC(67a60a6c) SHA1(0105317abf0105216078c94c02c223dd1cd61068), ROM_SKIP(3) | ROM_BIOS(0)) ROM_END static INPUT_PORTS_START(mvme180) INPUT_PORTS_END const tiny_rom_entry *vme_mvme180_card_device::device_rom_region() const { return ROM_NAME(mvme180); } ioport_constructor vme_mvme180_card_device::device_input_ports() const { return INPUT_PORTS_NAME(mvme180); } void vme_mvme180_card_device::device_start() { m_isr = 0; m_imr = 0; } void vme_mvme180_card_device::device_reset() { m_boot.select(0); } void vme_mvme180_card_device::device_add_mconfig(machine_config &config) { MC88100(config, m_cpu, 40_MHz_XTAL / 2); m_cpu->set_addrmap(AS_PROGRAM, &vme_mvme180_card_device::cpu_mem); m_cpu->set_cmmu_code([this](u32 const address) -> mc88200_device & { return *m_mmu[0]; }); m_cpu->set_cmmu_data([this](u32 const address) -> mc88200_device & { return *m_mmu[1]; }); MC88200(config, m_mmu[0], 40_MHz_XTAL / 2, 0x7e).set_mbus(m_cpu, AS_PROGRAM); MC88200(config, m_mmu[1], 40_MHz_XTAL / 2, 0x7f).set_mbus(m_cpu, AS_PROGRAM); SCN2681(config, m_duart, 3.6864_MHz_XTAL); m_duart->irq_cb().set(FUNC(vme_mvme180_card_device::irq_w<6>)); m_duart->outport_cb().set([this](u8 data) { LOG("port 0x%02x\n", data); }); RS232_PORT(config, m_serial[0], default_rs232_devices, "terminal"); RS232_PORT(config, m_serial[1], default_rs232_devices, nullptr); // TODO: dsr, dtr m_duart->a_tx_cb().set(m_serial[0], FUNC(rs232_port_device::write_txd)); m_duart->b_tx_cb().set(m_serial[1], FUNC(rs232_port_device::write_txd)); m_serial[0]->rxd_handler().set(m_duart, FUNC(scn2681_device::rx_a_w)); m_serial[1]->rxd_handler().set(m_duart, FUNC(scn2681_device::rx_b_w)); } void vme_mvme180_card_device::cpu_mem(address_map &map) { map(0x0000'0000, 0x007f'ffff).view(m_boot); m_boot[0](0x0000'0000, 0x0003'ffff).rom().region("eprom", 0); m_boot[1](0x0000'0000, 0x007f'ffff).ram(); map(0xff80'0000, 0xff83'ffff).rom().region("eprom", 0); // 0xff81'0000 // ds1287 rtc? map(0xffe1'0000, 0xffe1'0003).lr32([this]() { return m_isr; }, "isr"); map(0xffe2'0000, 0xffe2'0003).lw32( [this](u32 data) { LOG("imr 0x%08x (%s)\n", data, machine().describe_context()); m_imr = data; m_boot.select(1); interrupt(); }, "imr"); // 0xffe3'0000 // clear parity error interrupt? map(0xffe4'0000, 0xffe4'003f).rw(m_duart, FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask32(0x000000ff); // 0xffe8'0000 // vme vector register? // 0xffee'0000 // clear abort interrupt? } template void vme_mvme180_card_device::irq_w(int state) { LOG("irq_w<%d> %d\n", N, state); if (state) m_isr |= 1U << N; else m_isr &= ~(1U << N); interrupt(); } void vme_mvme180_card_device::interrupt() { m_cpu->set_input_line(INPUT_LINE_IRQ0, bool(m_isr & m_imr)); }