// license:BSD-3-Clause // copyright-holders:AJR /**************************************************************************** Skeleton driver for E-mu Emulator II synthesizer. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/adc0808.h" #include "machine/bankdev.h" #include "machine/pit8253.h" #include "machine/scn_pci.h" #include "machine/z80ctc.h" #include "machine/z80dma.h" #include "machine/z80pio.h" #include "machine/z80sio.h" class emu2_state : public driver_device { public: emu2_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_pages(*this, "pages") , m_scannercpu(*this, "scannercpu") , m_scan0(*this, "SCAN%u", 0U) , m_scan32(*this, "SCAN%u", 32U) , m_scan40(*this, "SCAN%u", 40U) , m_page_select{0, 0, 0, 0} , m_page_reset(true) , m_scan_select(0) { } void emu2(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: u8 main_paged_r(offs_t offset); void main_paged_w(offs_t offset, u8 data); u8 dma_paged_r(offs_t offset); void dma_paged_w(offs_t offset, u8 data); void page_select_w(offs_t offset, u8 data); void scan_select_w(u8 data); u8 scan_buffer_r(); void mem_map(address_map &map); void paged_mem_map(address_map &map); void io_map(address_map &map); void scanner_mem_map(address_map &map); void scanner_io_map(address_map &map); required_device m_maincpu; required_device m_pages; required_device m_scannercpu; required_ioport_array<16> m_scan0; required_ioport_array<2> m_scan32; required_ioport_array<2> m_scan40; u8 m_page_select[4]; bool m_page_reset; u8 m_scan_select; }; void emu2_state::machine_start() { save_item(NAME(m_page_select)); save_item(NAME(m_page_reset)); save_item(NAME(m_scan_select)); } void emu2_state::machine_reset() { m_page_reset = true; } u8 emu2_state::main_paged_r(offs_t offset) { return m_pages->read8((offset & 0x7fff) | u16(m_page_reset ? 0 : m_page_select[2 | BIT(offset, 15)]) << 15); } void emu2_state::main_paged_w(offs_t offset, u8 data) { m_pages->write8((offset & 0x7fff) | u16(m_page_reset ? 0 : m_page_select[2 | BIT(offset, 15)]) << 15, data); } u8 emu2_state::dma_paged_r(offs_t offset) { return m_pages->read8((offset & 0x7fff) | u16(m_page_reset ? 0 : m_page_select[BIT(offset, 15)]) << 15); } void emu2_state::dma_paged_w(offs_t offset, u8 data) { m_pages->write8((offset & 0x7fff) | u16(m_page_reset ? 0 : m_page_select[BIT(offset, 15)]) << 15, data); } void emu2_state::page_select_w(offs_t offset, u8 data) { if (!machine().side_effects_disabled()) m_page_reset = false; m_page_select[offset] = data & 0x0f; } void emu2_state::scan_select_w(u8 data) { m_scan_select = data; } u8 emu2_state::scan_buffer_r() { if (!BIT(m_scan_select, 5)) return m_scan0[m_scan_select & 0x0f]->read(); else if (m_scan_select & 0x06) return (BIT(m_scan_select, 3) ? m_scan40 : m_scan32)[m_scan_select & 1]->read(); else return 0xff; } void emu2_state::mem_map(address_map &map) { map(0x0000, 0xffff).rw(FUNC(emu2_state::main_paged_r), FUNC(emu2_state::main_paged_w)); } void emu2_state::paged_mem_map(address_map &map) { map(0x00000, 0x01fff).rom().region("main_program", 0); map(0x02000, 0x027ff).ram(); } void emu2_state::io_map(address_map &map) { map.global_mask(0xff); map(0x00, 0x03).r("usart", FUNC(scn2651_device::read)); map(0x04, 0x07).w("usart", FUNC(scn2651_device::write)); map(0x08, 0x0b).mirror(4).w("t6x", FUNC(pit8254_device::write)); map(0x10, 0x13).mirror(4).w("t35", FUNC(pit8254_device::write)); map(0x18, 0x1b).mirror(4).w("t02", FUNC(pit8254_device::write)); map(0x20, 0x20).mirror(7).rw("dma", FUNC(z80dma_device::read), FUNC(z80dma_device::write)); map(0x28, 0x2b).mirror(4).rw("mainctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0x30, 0x33).mirror(4).rw("mainpio", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); map(0x38, 0x3b).mirror(4).rw("disksio", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); map(0x68, 0x6b).w(FUNC(emu2_state::page_select_w)); } void emu2_state::scanner_mem_map(address_map &map) { map(0x0000, 0x1fff).mirror(0x6000).rom().region("scanner_program", 0); map(0x8000, 0x87ff).mirror(0x7800).ram(); } void emu2_state::scanner_io_map(address_map &map) { map.global_mask(0xff); map(0x34, 0x34).mirror(0x81).r("adc", FUNC(adc0809_device::data_r)); map(0x36, 0x36).mirror(0x81).w("adc", FUNC(adc0809_device::address_data_start_w)); map(0x38, 0x38).mirror(0x81).r(FUNC(emu2_state::scan_buffer_r)); map(0x50, 0x53).mirror(0x8c).rw("scannerpio", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); map(0x60, 0x63).mirror(0x8c).rw("scannerctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); } static INPUT_PORTS_START(emu2) PORT_START("SCAN0") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN1") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN2") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN3") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN4") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN5") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN6") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN7") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN8") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN9") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN10") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN11") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN12") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN13") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN14") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN15") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN32") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN33") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN40") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_START("SCAN41") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN) INPUT_PORTS_END static const z80_daisy_config main_daisy_chain[] = { { "disksio" }, { "dma" }, { "mainctc" }, { "mainpio" }, { nullptr } }; static const z80_daisy_config scanner_daisy_chain[] = { { "scannerctc" }, { "scannerpio" }, { nullptr } }; void emu2_state::emu2(machine_config &config) { Z80(config, m_maincpu, 20_MHz_XTAL / 5); // Z80A CPU (IC21) m_maincpu->set_addrmap(AS_PROGRAM, &emu2_state::mem_map); m_maincpu->set_addrmap(AS_IO, &emu2_state::io_map); m_maincpu->set_daisy_config(main_daisy_chain); ADDRESS_MAP_BANK(config, m_pages); m_pages->set_endianness(ENDIANNESS_LITTLE); m_pages->set_data_width(8); m_pages->set_addr_width(19); m_pages->set_addrmap(0, &emu2_state::paged_mem_map); z80ctc_device &mainctc(Z80CTC(config, "mainctc", 20_MHz_XTAL / 5)); // Z80A CTC (IC60) mainctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); z80dma_device &dma(Z80DMA(config, "dma", 20_MHz_XTAL / 5)); // Z80A DMA dma.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); dma.in_mreq_callback().set(FUNC(emu2_state::dma_paged_r)); dma.out_mreq_callback().set(FUNC(emu2_state::dma_paged_w)); z80pio_device &mainpio(Z80PIO(config, "mainpio", 20_MHz_XTAL / 5)); // Z80A PIO (IC24) mainpio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); mainpio.out_pa_callback().set("scannerpio", FUNC(z80pio_device::port_a_write)); z80sio_device &disksio(Z80SIO(config, "disksio", 20_MHz_XTAL / 5)); // Z80A SIO/2 (IC126) disksio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); scn2651_device &usart(SCN2651(config, "usart", 20_MHz_XTAL / 4)); usart.rxrdy_handler().set("mainctc", FUNC(z80ctc_device::trg1)).invert(); pit8254_device &t02(PIT8254(config, "t02")); // 8254-2 (IC3) t02.set_clk<0>(20_MHz_XTAL / 2); t02.set_clk<1>(20_MHz_XTAL / 2); t02.set_clk<2>(20_MHz_XTAL / 2); pit8254_device &t35(PIT8254(config, "t35")); // 8254-2 (IC2) t35.set_clk<0>(20_MHz_XTAL / 2); t35.set_clk<1>(20_MHz_XTAL / 2); t35.set_clk<2>(20_MHz_XTAL / 2); pit8254_device &t6x(PIT8254(config, "t6x")); // 8254-2 (IC1) t6x.set_clk<0>(20_MHz_XTAL / 2); t6x.set_clk<1>(20_MHz_XTAL / 2); t6x.set_clk<2>(20_MHz_XTAL / 2); Z80(config, m_scannercpu, 20_MHz_XTAL / 5); // Z80A CPU (IC66) m_scannercpu->set_addrmap(AS_PROGRAM, &emu2_state::scanner_mem_map); m_scannercpu->set_addrmap(AS_IO, &emu2_state::scanner_io_map); m_scannercpu->set_daisy_config(scanner_daisy_chain); z80ctc_device &scannerctc(Z80CTC(config, "scannerctc", 20_MHz_XTAL / 5)); // Z80A CTC (IC45) scannerctc.intr_callback().set_inputline(m_scannercpu, INPUT_LINE_IRQ0); scannerctc.set_clk<2>(20_MHz_XTAL / 10); adc0809_device &adc(ADC0809(config, "adc", 20_MHz_XTAL / 40)); adc.eoc_callback().set("scannerctc", FUNC(z80ctc_device::trg3)); z80pio_device &scannerpio(Z80PIO(config, "scannerpio", 20_MHz_XTAL / 5)); // Z80A PIO (IC46) scannerpio.out_int_callback().set_inputline(m_scannercpu, INPUT_LINE_IRQ0); scannerpio.out_pa_callback().set("mainpio", FUNC(z80pio_device::port_a_write)); scannerpio.out_pb_callback().set(FUNC(emu2_state::scan_select_w)); } ROM_START(emu2) ROM_REGION(0x2000, "main_program", 0) ROM_SYSTEM_BIOS(0, "v23", "Version 2.3") ROMX_LOAD("e2newermain_hdmb2_3_main.ic42", 0x0000, 0x2000, CRC(c8303551) SHA1(4ec4bf6df95638d4503ab8ff7e859c420ec0720e), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "v21", "Version 2.1") ROMX_LOAD("e2plus_mainboot_2_1_dm_2764.ic42", 0x0000, 0x2000, CRC(91e60278) SHA1(a2332266d6a12eade584b5da85817f3b3ed9037c), ROM_BIOS(1)) ROM_SYSTEM_BIOS(2, "diag", "Diagnostics") ROMX_LOAD("e-mu_systems_1986_e2plus_debug_rom_ip341.ic42", 0x0000, 0x2000, CRC(7cd30c30) SHA1(d572d88c8788e25154a3bb8fd2ba3ff8a300ae40), ROM_BIOS(2)) // 2764 chip ROM_REGION(0x2000, "scanner_program", 0) // TODO: make these selectable)) ROM_LOAD("eiiscanv2-1.ic28", 0x0000, 0x2000, CRC(b7913026) SHA1(4485e5423606014be73f121c2ee1f053a6eb148a)) ROM_LOAD("eiiscanv3-1.ic28", 0x0000, 0x2000, CRC(1544b11d) SHA1(e354388cd694a1ce55a5b7d89c546308628090c7)) ROM_REGION(0x400, "ucontroller", 0) ROM_LOAD("74s472.ic137", 0x000, 0x200, NO_DUMP) ROM_LOAD("74s472.ic135", 0x200, 0x200, NO_DUMP) ROM_END SYST(1984, emu2, 0, 0, emu2, emu2, emu2_state, empty_init, "E-mu Systems", "Emulator II", MACHINE_IS_SKELETON)