diff options
Diffstat (limited to 'src/devices/bus/vme/vme_hcpu30.cpp')
-rw-r--r-- | src/devices/bus/vme/vme_hcpu30.cpp | 604 |
1 files changed, 0 insertions, 604 deletions
diff --git a/src/devices/bus/vme/vme_hcpu30.cpp b/src/devices/bus/vme/vme_hcpu30.cpp deleted file mode 100644 index 8c90410b21c..00000000000 --- a/src/devices/bus/vme/vme_hcpu30.cpp +++ /dev/null @@ -1,604 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Sergey Svishchev - -/* - * Besta HCPU30 board. - * - * Supported by SysV R3 "Bestix" port and also by Linux port, - * see https://github.com/shattered/linux-m68k - * - * 68030 @ 33 MHz - primary CPU - * 68882 @ 33 Mhz - FPU - * 68020 @ 16 MHz - I/O CPU (using shared memory region) - * - * 4 or 16 MB of DRAM - * 8 or 32 KB of NVRAM - * - * 33C93A - SCSI - * DP8473 - Floppy - * i82590 - Ethernet - * 62421A - Real-time clock - * - * To do: - * - * - pass functional test - * - boot to multiuser (SysV and Linux) - * - add LAN and Centronics - * - floppy: how is TC signal generated? (m_fdcdrq_hack); ready signal routing; dp8493 hacks - * - dump PALs (should help with irq routing) - * - */ - -#include "emu.h" -#include "vme_hcpu30.h" - -//#define LOG_GENERAL (1U << 0) -#define LOG_SETUP (1U << 1) -#define LOG_INT (1U << 2) - -//#define VERBOSE (LOG_GENERAL | LOG_SETUP | LOG_INT) -//#define LOG_OUTPUT_FUNC printf - -#include "logmacro.h" - -#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__) -#define LOGINT(...) LOGMASKED(LOG_INT, __VA_ARGS__) - -#ifdef _MSC_VER -#define FUNCNAME __func__ -#else -#define FUNCNAME __PRETTY_FUNCTION__ -#endif - - -#define DUSCC_CLOCK XTAL(14'745'600) /* XXX Unverified */ -#define RS232P1_TAG "rs232p1" -#define RS232P2_TAG "rs232p2" - - -//************************************************************************** -// GLOBAL VARIABLES -//************************************************************************** - -DEFINE_DEVICE_TYPE(VME_HCPU30, vme_hcpu30_card_device, "hcpu30", "Besta HCPU30 CPU board") - -void vme_hcpu30_card_device::hcpu30_mem(address_map &map) -{ - map.unmap_value_high(); - map(0x00000000, 0x003fffff).ram().share("dram"); // local bus DRAM, 4 MB - map(0x00400000, 0x00ffffff).ram().share("hldram"); // optional HLDRAM - map(0xff000000, 0xff007fff).rom().region("user1", 0).mirror(0x8000); - map(0xfff1f400, 0xfff1f4ff).unmaprw(); // LAN DMA - map(0xff020000, 0xff021fff).ram().share("mailbox").mirror(0x8000); // SRAM 32KB -- shared with iocpu - map(0xff022000, 0xff027fff).ram().mirror(0x8000); - map(0xffff8000, 0xffff9fff).ram().share("mailbox"); - map(0xfffff000, 0xfffff0ff).rw(FUNC(vme_hcpu30_card_device::dma_r), FUNC(vme_hcpu30_card_device::dma_w)); - map(0xfffff100, 0xfffff11f).rw(FUNC(vme_hcpu30_card_device::irq_state_r), FUNC(vme_hcpu30_card_device::irq_mask_w)); - map(0xfffff120, 0xfffff13f).rw(FUNC(vme_hcpu30_card_device::rtc_r), FUNC(vme_hcpu30_card_device::rtc_w)); - map(0xfffff200, 0xfffff2ff).rw("scsi:7:wd33c93", FUNC(wd33c93_device::indir_r), FUNC(wd33c93_device::indir_w)).umask32(0xffff0000); - map(0xfffff300, 0xfffff3ff).rw("duscc", FUNC(duscc68562_device::read), FUNC(duscc68562_device::write)); - map(0xfffff580, 0xfffff583).rw("scsi:7:wd33c93", FUNC(wd33c93_device::dma_r), FUNC(wd33c93_device::dma_w)).umask32(0xff000000); - map(0xfffff600, 0xfffff6ff).unmaprw(); // LAN - map(0xfffff700, 0xfffff7ff).m("floppy", FUNC(dp8473_device::map)); -} - -void vme_hcpu30_card_device::hcpu30_os_mem(address_map &map) -{ -// bus error handler - map(0x00000000, 0xffffffff).rw(FUNC(vme_hcpu30_card_device::trap_r), FUNC(vme_hcpu30_card_device::trap_w)); -// shared memory with iocpu - map(0x00000000, 0x003fffff).ram().share("dram"); - map(0x00400000, 0x00ffffff).ram().share("hldram"); - map(0xffff8000, 0xffff9fff).ram().share("mailbox"); -} - -void vme_hcpu30_card_device::cpu_space_map(address_map &map) -{ - map(0xfffffff0, 0xffffffff).lr16(NAME([](offs_t offset) -> u16 { return 0x18 + offset; })); -} - -void vme_hcpu30_card_device::oscpu_space_map(address_map &map) -{ - map(0xfffffff0, 0xffffffff).lr16(NAME([this](offs_t offset) -> u16 { - u16 vec = (offset & 1) ? (m_mailbox[offset >> 1] >> 8) : (m_mailbox[offset >> 1] >> 24); - logerror("68030 iack %d = %02x\n", offset, vec); - if (1 || BIT(m_irq_state, 6)) // FIXME: irq routing is not fully understood - { - m_irq_state &= ~(1 << 6); // raise IRQ30* - update_030_irq(offset, CLEAR_LINE); - return vec; - } - else - { - return 0; - } - })); -} - -static INPUT_PORTS_START(hcpu30) - PORT_START("SA1") - PORT_DIPNAME(0x03, 0x00, "Console port speed") - PORT_DIPSETTING(0x00, "9600") - PORT_DIPSETTING(0x01, "19200") - PORT_DIPSETTING(0x02, "38400") - PORT_DIPSETTING(0x03, "4800") - PORT_DIPNAME(0x04, 0x04, "Boot into...") - PORT_DIPSETTING(0x00, "UNIX") - PORT_DIPSETTING(0x04, "Monitor") - PORT_DIPNAME(0x08, 0x00, "Undefined 1") - PORT_DIPSETTING(0x00, "Off") - PORT_DIPSETTING(0x08, "On") - PORT_DIPNAME(0x10, 0x00, "VME bus width") - PORT_DIPSETTING(0x00, "32 bits") - PORT_DIPSETTING(0x10, "16 bits") - PORT_DIPNAME(0x20, 0x00, "VME bus free") - PORT_DIPSETTING(0x00, "ROR") - PORT_DIPSETTING(0x20, "REC") - PORT_DIPNAME(0x40, 0x00, "Cache burst mode") - PORT_DIPSETTING(0x00, "Off") - PORT_DIPSETTING(0x40, "On") - PORT_DIPNAME(0x80, 0x00, "Undefined 2") - PORT_DIPSETTING(0x00, "Off") - PORT_DIPSETTING(0x80, "On") -INPUT_PORTS_END - -ROM_START(hcpu30) - ROM_REGION32_BE(0x8000, "user1", ROMREGION_ERASEFF) - // Rev 1.E of 09-NOV-1993 - ROM_LOAD("hcpu30.27c256.dat", 0x0000, 0x8000, CRC(d24da66e) SHA1(5431b0559b168a995e725b35e1465a0b8ee8aa72)) -ROM_END - -//------------------------------------------------- -// rom_region - device-specific ROM region -//------------------------------------------------- - -const tiny_rom_entry *vme_hcpu30_card_device::device_rom_region() const -{ - return ROM_NAME(hcpu30); -} - -//------------------------------------------------- -// input_ports - device-specific input ports -//------------------------------------------------- - -ioport_constructor vme_hcpu30_card_device::device_input_ports() const -{ - return INPUT_PORTS_NAME(hcpu30); -} - -static void hcpu_floppies(device_slot_interface &device) -{ - device.option_add("525qd", FLOPPY_525_QD); -} - -//------------------------------------------------- -// device_add_mconfig - add device configuration -//------------------------------------------------- - -void vme_hcpu30_card_device::device_add_mconfig(machine_config &config) -{ - // I/O CPU - M68020(config, m_maincpu, 16670000); - m_maincpu->set_addrmap(AS_PROGRAM, &vme_hcpu30_card_device::hcpu30_mem); - m_maincpu->set_addrmap(m68000_base_device::AS_CPU_SPACE, &vme_hcpu30_card_device::cpu_space_map); - m_maincpu->disable_interrupt_mixer(); - - // FIXME: functional test expects dtr->dcd, rts->cts connections on both ports and tx->rx connection on port B - DUSCC68562(config, m_dusccterm, DUSCC_CLOCK); - m_dusccterm->configure_channels(0, 0, 0, 0); - m_dusccterm->out_txda_callback().set(RS232P1_TAG, FUNC(rs232_port_device::write_txd)); - m_dusccterm->out_dtra_callback().set(RS232P1_TAG, FUNC(rs232_port_device::write_dtr)); - m_dusccterm->out_rtsa_callback().set(RS232P1_TAG, FUNC(rs232_port_device::write_rts)); -// m_dusccterm->out_dtra_callback().set(m_dusccterm, FUNC(duscc68562_device::dcda_w)); -// m_dusccterm->out_rtsa_callback().set(m_dusccterm, FUNC(duscc68562_device::ctsa_w)); - m_dusccterm->out_txdb_callback().set(RS232P2_TAG, FUNC(rs232_port_device::write_txd)); - m_dusccterm->out_dtrb_callback().set(RS232P2_TAG, FUNC(rs232_port_device::write_dtr)); - m_dusccterm->out_rtsb_callback().set(RS232P2_TAG, FUNC(rs232_port_device::write_rts)); -// m_dusccterm->out_txdb_callback().set(m_dusccterm, FUNC(duscc68562_device::rxb_w)); -// m_dusccterm->out_dtrb_callback().set(m_dusccterm, FUNC(duscc68562_device::dcdb_w)); -// m_dusccterm->out_rtsb_callback().set(m_dusccterm, FUNC(duscc68562_device::ctsb_w)); - m_dusccterm->out_int_callback().set(FUNC(vme_hcpu30_card_device::dusirq_callback)); - - rs232_port_device &rs232p1(RS232_PORT(config, RS232P1_TAG, default_rs232_devices, "terminal")); - rs232p1.rxd_handler().set(m_dusccterm, FUNC(duscc68562_device::rxa_w)); - rs232p1.cts_handler().set(m_dusccterm, FUNC(duscc68562_device::ctsa_w)); - - rs232_port_device &rs232p2(RS232_PORT(config, RS232P2_TAG, default_rs232_devices, nullptr)); - rs232p2.rxd_handler().set(m_dusccterm, FUNC(duscc68562_device::rxb_w)); - rs232p2.cts_handler().set(m_dusccterm, FUNC(duscc68562_device::ctsb_w)); - - NSCSI_BUS(config, "scsi"); - NSCSI_CONNECTOR(config, "scsi:0").option_set("hd", NSCSI_HARDDISK); - NSCSI_CONNECTOR(config, "scsi:1").option_set("hd", NSCSI_HARDDISK); - NSCSI_CONNECTOR(config, "scsi:2").option_set("hd", NSCSI_HARDDISK); - NSCSI_CONNECTOR(config, "scsi:7").option_set("wd33c93", WD33C93A).machine_config( - [this](device_t *device) - { - wd33c9x_base_device &wd33c93(downcast<wd33c9x_base_device &>(*device)); - - wd33c93.set_clock(16670000/4); // default internal divisor is 2 - wd33c93.irq_cb().set(*this, FUNC(vme_hcpu30_card_device::scsiirq_callback)).invert(); - wd33c93.drq_cb().set(*this, FUNC(vme_hcpu30_card_device::scsidrq_callback)); - }); - - // schematics connect INT to IPL1, not DRQ; could be outdated - DP8473(config, m_fdc, 24_MHz_XTAL); - m_fdc->drq_wr_callback().set_inputline(m_maincpu, M68K_IRQ_IPL1); - m_fdc->intrq_wr_callback().set(*this, FUNC(vme_hcpu30_card_device::fdcirq_callback)).invert(); - - // FIXME: drive select signals are swapped, handle this - FLOPPY_CONNECTOR(config, "floppy:0", hcpu_floppies, "525qd", floppy_image_device::default_pc_floppy_formats); - FLOPPY_CONNECTOR(config, "floppy:1", hcpu_floppies, "525qd", floppy_image_device::default_pc_floppy_formats); - - RTC62421(config, m_rtc, 32.768_kHz_XTAL); - - // FIXME: functional test expects A26-C24 A27-C28 A28-C26 A29-C30 A30-C32 - // i.e. ACKNOWL-CENTDS BUSY-CENTD3 PE-CENTD1 SLCT-CENTD5 ERROR-CENTD7 - CENTRONICS(config, m_centronics, centronics_devices, "printer"); - - INPUT_BUFFER(config, m_cent_status_in); - - OUTPUT_LATCH(config, m_cent_data_out); - - // OS CPU - M68030(config, m_oscpu, 2*16670000); - m_oscpu->set_addrmap(AS_PROGRAM, &vme_hcpu30_card_device::hcpu30_os_mem); - m_oscpu->set_addrmap(m68000_base_device::AS_CPU_SPACE, &vme_hcpu30_card_device::oscpu_space_map); - m_oscpu->set_disable(); -} - -uint32_t vme_hcpu30_card_device::rtc_r(offs_t offset) -{ - uint32_t data; - - if (m_rtc_hack) - { - data = (m_rtc_reg[offset << 1] << 28) | (m_rtc_reg[(offset << 1) + 1] << 12); - data |= (m_rtc_reg[offset << 1] << 20) | (m_rtc_reg[(offset << 1) + 1] << 4); - } - else - { - data = (m_rtc->read(offset << 1) << 28) | (m_rtc->read((offset << 1) + 1) << 12); - data |= (m_rtc->read(offset << 1) << 20) | (m_rtc->read((offset << 1) + 1) << 4); - } - - if (offset == 0) - { - data &= 0xffffff; - data |= ioport("SA1")->read() << 24; - } - if (offset == 7) - { - data &= 0xff00ffff; - data |= (m_cent_status_in->read() ^ 0xff) << 16; - } - LOG("%s(%02x)==%08x%s\n", FUNCNAME, offset, data, m_rtc_hack ? " hacked" : ""); - return data; -} - -void vme_hcpu30_card_device::rtc_w(offs_t offset, uint32_t data, uint32_t mem_mask) -{ - LOG("%s(%02x,%08x)<-%08x\n", FUNCNAME, offset, mem_mask, data); - if (mem_mask == 0xffff0000) - { - m_rtc->write(offset << 1, (data >> 4) & 15); - m_rtc_reg[offset << 1] = (data >> 4) & 15; - if (offset == 7) - { - m_cent_data_out->write(data >> 8); - } - } - else - { - m_rtc->write((offset << 1) + 1, (data >> 20) & 15); - m_rtc_reg[(offset << 1) + 1] = (data >> 20) & 15; - } - if (offset < 6 || (offset == 6 && mem_mask == 0xffff0000)) m_rtc_hack = true; else m_rtc_hack = false; -} - -uint32_t vme_hcpu30_card_device::dma_r(offs_t offset) -{ - if (m_fdcdrq_hack++ == 1023) - { - m_fdc->tc_w(1); - m_fdcdrq_hack = 0; - } - else - { - m_fdc->tc_w(0); - } - return m_fdc->dma_r() << 24; -} - -void vme_hcpu30_card_device::dma_w(offs_t offset, uint32_t data, uint32_t mem_mask) -{ - if (m_fdcdrq_hack++ == 1023) - { - m_fdc->tc_w(1); - m_fdcdrq_hack = 0; - } - else - { - m_fdc->tc_w(0); - } - m_fdc->dma_w(data); -} - -uint32_t vme_hcpu30_card_device::trap_r(offs_t offset, uint32_t mem_mask) -{ - if (!machine().side_effects_disabled()) set_bus_error((offset << 2), true, mem_mask); - - return 0xffffffff; -} - -void vme_hcpu30_card_device::trap_w(offs_t offset, uint32_t data, uint32_t mem_mask) -{ - LOG("%s(%08x,%08X)\n", FUNCNAME, offset << 2, data); - if (!machine().side_effects_disabled()) set_bus_error((offset << 2), false, mem_mask); -} - -// AH? -WRITE_LINE_MEMBER(vme_hcpu30_card_device::dusirq_callback) -{ - LOGINT("%s(%02x)\n", FUNCNAME, state); - m_irq_state &= ~(1 << (8+4)); - m_irq_state |= (state << (8+4)); -} - -// AL? -WRITE_LINE_MEMBER(vme_hcpu30_card_device::scsiirq_callback) -{ - LOGINT("%s(%02x)\n", FUNCNAME, state); - m_irq_state &= ~(1 << 8); - m_irq_state |= (state << 8); -} - -// AL? -WRITE_LINE_MEMBER(vme_hcpu30_card_device::scsidrq_callback) -{ - LOGINT("%s(%02x)\n", FUNCNAME, state); - m_irq_state &= ~(1 << 7); - m_irq_state |= (state << 7); -} - -// AL? -WRITE_LINE_MEMBER(vme_hcpu30_card_device::fdcirq_callback) -{ - LOGINT("%s(%02x)\n", FUNCNAME, state); - m_irq_state &= ~(1 << (8+2)); - m_irq_state |= (state << (8+2)); -} - -// AL? -WRITE_LINE_MEMBER(vme_hcpu30_card_device::fdcdrq_callback) -{ - LOGINT("%s(%02x)\n", FUNCNAME, state); -#if 0 - if (state) - { - if (m_fdcdrq_hack++ == 1022) - { - m_fdc->tc_w(1); - m_fdcdrq_hack = 0; - } - else - { - m_fdc->tc_w(0); - } - } -#endif -} - -// FF0003F2: move.w #$1d40, D7 -// i.e. DUSIRQ, ABORT, FDCIRQ, SCSIIRQ, IRQ30 -// FF00074C: eori.w #$2540, D0 -// i.e. bits 6, 8, 10, 13 are active low -// D70 translates to DL16-23 -// D69 translates to DI0-7, D67 to DL24-31 -// -// == f101.w == -// 0 - SYSFAIL* -// 1 - ACFAIL* -// 2 - TERMRES* -// 3 - nc -// 4 - FPSENSE* -// 5 - RST* -// 6 - IRQ30* D119 PLM output (CLRINT* and VECT20 inputs) -// 7 - SDMRQ* -// == f100.w == -// 8 - SCSIIRQ -// 9 - CENTIRQ* -// 10 - FDCIRQ* -// 11 - ABORT* -// 12 - DUSIRQ* -// 13 - LANIRQ -// 14 - IPEND* from 030 -// 15 - LDMARQ* -uint32_t vme_hcpu30_card_device::irq_state_r(offs_t offset) -{ - return m_irq_state << 16; -} - -void vme_hcpu30_card_device::update_030_irq(int irq, line_state state) -{ - if (irq != 0) - { - if (state == ASSERT_LINE) - { - LOG("triggering 68030 irq %d\n", irq); - m_oscpu->set_input_line(M68K_IRQ_NONE + irq, ASSERT_LINE); - } - else - { - LOG("clearing 68030 irq %d\n", irq); - m_oscpu->set_input_line(M68K_IRQ_NONE + irq, CLEAR_LINE); - } - } -} - -// D60 translates from DI0-7 (DL24-31) -// D61 translates from DL16-21 -// 0 - INTL0 -// 1 - INTL1 -// 2 - INTL2 -// 3 - VME16 -// 4 - CLRINT* D119 PLM input -// 5 - LPBK* (loopback?) -// 6-7 - nc -// 8 - SCSIRES* -// 9 - ROR -// 10 - CENTDS (strobe) -// 11 - RESET* -// 12 - HALT* -// 13 - SRLOCL* -// 14 - PWRDOWN -// 15 - INTENA* "enable input" pin of LS148 priority encoder -void vme_hcpu30_card_device::irq_mask_w(offs_t offset, uint32_t data, uint32_t mem_mask) -{ - uint16_t diff; - - data >>= 16; - diff = data ^ m_irq_mask; - - LOG("%s(%04x,%04x)\n", FUNCNAME, data, diff); - - if (BIT(diff, 15)) - { - update_030_irq((BIT(data, 15) ? m_irq_mask : data) & 7, BIT(data, 15) ? CLEAR_LINE : ASSERT_LINE); - } - // CLRINT* affects IRQ30* - if (BIT(diff, 4)) - { - m_irq_state &= ~(1 << 6); - m_irq_state |= (BIT(data, 4) << 6); - } - if (BIT(diff, 8)) - { - m_scsi->reset_w(BIT(data, 8)); - m_irq_state &= ~(1 << 5); - m_irq_state |= (!BIT(data, 8) << 5); - } - if (BIT(diff, 10)) - { - m_centronics->write_strobe(BIT(data, 10)); - } - if (BIT(diff, 11)) - { - if (BIT(m_irq_mask, 11)) - { - m_oscpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE); - LOG("68030 halted by reset\n"); - } - else - { - if (m_oscpu->suspended(SUSPEND_REASON_RESET)) - { - m_oscpu->set_input_line(INPUT_LINE_RESET, CLEAR_LINE); - LOG("68030 started after reset\n"); - } - } - } - if (BIT(diff, 12)) - { - if (BIT(m_irq_mask, 12)) - { - m_oscpu->suspend(SUSPEND_REASON_DISABLE, 1); - LOG("68030 halted\n"); - } - else - { - if (m_oscpu->suspended(SUSPEND_REASON_DISABLE)) - { - m_oscpu->resume(SUSPEND_REASON_DISABLE); - LOG("68030 started\n"); - } - } - } - m_irq_mask = data; -} - -void vme_hcpu30_card_device::set_bus_error(uint32_t address, bool rw, uint32_t mem_mask) -{ - if (m_bus_error) - { - return; - } - LOG("bus error at %08x & %08x (%s)\n", address, mem_mask, rw ? "read" : "write"); - if (!ACCESSING_BITS_16_31) - { - address++; - } - m_bus_error = true; - m_oscpu->set_buserror_details(address, rw, m_oscpu->get_fc()); - m_oscpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE); - m_bus_error_timer->adjust(m_oscpu->cycles_to_attotime(16)); // let rmw cycles complete -} - -vme_hcpu30_card_device::vme_hcpu30_card_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, type, tag, owner, clock) - , device_vme_card_interface(mconfig, *this) - , m_maincpu(*this, "maincpu") - , m_dusccterm(*this, "duscc") - , m_scsi(*this, "scsi:7:wd33c93") - , m_fdc(*this, "floppy") - , m_floppy0(*this, "floppy:0") - , m_floppy1(*this, "floppy:1") - , m_rtc(*this, "rtc") - , m_centronics(*this, "centronics") - , m_cent_data_out(*this, "cent_data_out") - , m_cent_status_in(*this, "cent_status_in") - , m_oscpu(*this, "oscpu") - , m_mailbox(*this, "mailbox") - , m_p_ram(*this, "dram") - , m_sysrom(*this, "user1") -{ - LOG("%s %s\n", tag, FUNCNAME); - m_slot = 1; -} - -// - -vme_hcpu30_card_device::vme_hcpu30_card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : vme_hcpu30_card_device(mconfig, VME_HCPU30, tag, owner, clock) -{ -} - -void vme_hcpu30_card_device::device_start() -{ - LOG("%s %s\n", tag(), FUNCNAME); - - m_bus_error_timer = timer_alloc(0); -} - -void vme_hcpu30_card_device::device_reset() -{ - address_space &program = m_maincpu->space(AS_PROGRAM); - - LOG("%s %s\n", tag(), FUNCNAME); - m_irq_state = (1 << 10) | (1 << 6); // fdcirq | irq30* - m_irq_mask = 0; - m_rtc_hack = false; - m_fdcdrq_hack = 0; - m_fdc->ready_w(false); - - program.install_rom(0x00000000, 0x00000007, m_sysrom); // do it here for F3 - m_rom_shadow_tap = program.install_read_tap(0xff000000, 0xff007fff, "rom_shadow_r", [this](offs_t offset, u32 &data, u32 mem_mask) - { - if (!machine().side_effects_disabled()) - { - // delete this tap - m_rom_shadow_tap->remove(); - - // reinstall ram over the rom shadow - m_maincpu->space(AS_PROGRAM).install_ram(0x00000000, 0x00000007, m_p_ram); - } - - // return the original data - return data; - }); -} - -void vme_hcpu30_card_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) -{ - m_bus_error = false; -} |