diff options
Diffstat (limited to 'src/devices/bus/multibus/labtam_3232.cpp')
-rw-r--r-- | src/devices/bus/multibus/labtam_3232.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/devices/bus/multibus/labtam_3232.cpp b/src/devices/bus/multibus/labtam_3232.cpp new file mode 100644 index 00000000000..35181ea4a78 --- /dev/null +++ b/src/devices/bus/multibus/labtam_3232.cpp @@ -0,0 +1,116 @@ +// license:BSD-3-Clause +// copyright-holders:Patrick Mackinlay + +/* + * Labtam 3000 3232 (V32?) processor board. + * + * Sources: + * - http://www.cpu-ns32k.net/Multi.html + * - https://arvutimuuseum.ut.ee/index.php?m=eksponaadid&id=223 + * + * TODO: + * - skeleton only + */ + +#include "emu.h" +#include "labtam_3232.h" + +#define VERBOSE 0 +#include "logmacro.h" + +DEFINE_DEVICE_TYPE(LABTAM_3232, labtam_3232_device, "labtam_3232", "Labtam 3232") + +labtam_3232_device::labtam_3232_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) + : device_t(mconfig, LABTAM_3232, tag, owner, clock) + , device_multibus_interface(mconfig, *this) + , m_cpu(*this, "cpu") + , m_fpu(*this, "fpu") + , m_mmu(*this, "mmu") + , m_icu(*this, "icu") + , m_boot(*this, "boot") + , m_installed(false) +{ +} + +ROM_START(labtam_3232) + ROM_REGION32_LE(0x10000, "eprom", 0) + ROM_LOAD32_BYTE("sash_0__g87.bin", 0x0000, 0x4000, CRC(31132de0) SHA1(39f7c1f146346a53c253284ba3437b5f9217f439)) + ROM_LOAD32_BYTE("sash_1__g87.bin", 0x0001, 0x4000, CRC(09b4e8ba) SHA1(b722386fc6e4a634472d5a0501eb41e12d89f7dc)) + ROM_LOAD32_BYTE("sash_2__g87.bin", 0x0002, 0x4000, CRC(d76457b0) SHA1(efd18e0347b0181a0d2aa80098bd4fdb60a82788)) + ROM_LOAD32_BYTE("sash_3__g87.bin", 0x0003, 0x4000, CRC(7817d1b8) SHA1(032df47e1ba34653b5837f68eefa3ecaac17a483)) +ROM_END + +static INPUT_PORTS_START(labtam_3232) +INPUT_PORTS_END + +const tiny_rom_entry *labtam_3232_device::device_rom_region() const +{ + return ROM_NAME(labtam_3232); +} + +ioport_constructor labtam_3232_device::device_input_ports() const +{ + return INPUT_PORTS_NAME(labtam_3232); +} + +void labtam_3232_device::device_start() +{ +} + +void labtam_3232_device::device_reset() +{ + if (!m_installed) + { + // TODO: what's exposed to the Multibus? +#if 0 + m_bus->int_callback<0>().set(m_icu, FUNC(ns32202_device::ir_w<0>)); + m_bus->int_callback<1>().set(m_icu, FUNC(ns32202_device::ir_w<1>)); + m_bus->int_callback<2>().set(m_icu, FUNC(ns32202_device::ir_w<3>)); + m_bus->int_callback<3>().set(m_icu, FUNC(ns32202_device::ir_w<4>)); + m_bus->int_callback<4>().set(m_icu, FUNC(ns32202_device::ir_w<6>)); + m_bus->int_callback<5>().set(m_icu, FUNC(ns32202_device::ir_w<7>)); + m_bus->int_callback<6>().set(m_icu, FUNC(ns32202_device::ir_w<8>)); + m_bus->int_callback<7>().set([this](int state) { m_s8->read() ? m_cpu->set_input_line(INPUT_LINE_NMI, !state) : m_icu->ir_w<11>(state); }); +#endif + m_installed = true; + } + + m_boot.select(0); +} + +void labtam_3232_device::device_add_mconfig(machine_config &config) +{ + NS32032(config, m_cpu, 20_MHz_XTAL / 2); + m_cpu->set_addrmap(0, &labtam_3232_device::cpu_map<0>); + m_cpu->set_addrmap(4, &labtam_3232_device::cpu_map<4>); + + NS32081(config, m_fpu, 20_MHz_XTAL / 2); + m_cpu->set_fpu(m_fpu); + + NS32082(config, m_mmu, 20_MHz_XTAL / 2); + m_cpu->set_mmu(m_mmu); + + NS32202(config, m_icu, 20_MHz_XTAL / 2); + m_icu->out_int().set_inputline(m_cpu, INPUT_LINE_IRQ0).invert(); +} + +template <unsigned ST> void labtam_3232_device::cpu_map(address_map &map) +{ + if (ST == 0) + { + map(0x00000000, 0x007fffff).view(m_boot); + + m_boot[0](0x00000000, 0x0000ffff).rom().region("eprom", 0); + m_boot[1](0x00000000, 0x001fffff).ram(); // 2M on-board RAM with parity (up to 8M possible?) + + // 0xd00000 - maybe multibus memory or i/o? + map(0x00d00413, 0x00d00413).lr8([]() { return 0x18; }, "unknown_r8"); + map(0x00d00500, 0x00d00503).lr16([]() { return 0x0003; }, "unknown_r16"); + + map(0x00f80000, 0x00f8ffff).rom().region("eprom", 0); + + map(0x00fff914, 0x00fff914).lw8([this](u8 data) { m_boot.select(1); }, "men_w"); // ram enable? + } + + map(0xfffe00, 0xfffeff).m(m_icu, FUNC(ns32202_device::map<BIT(ST, 1)>)).umask32(0x000000ff); +} |