// license:BSD-3-Clause // copyright-holders:Carl // Slicer Computers Slicer 80186 SBC // The bios makefile refers to a "exe3bin" utility, this can be substituted with FreeDOS exe2bin and the /l=0xf800 option // which will fixup the relocations #include "emu.h" #include "cpu/i86/i186.h" #include "imagedev/floppy.h" #include "machine/74259.h" #include "machine/wd_fdc.h" #include "machine/mc68681.h" #include "bus/rs232/rs232.h" #include "bus/isa/isa.h" #include "bus/scsi/scsi.h" class slicer_state : public driver_device { public: slicer_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_fdc(*this, "fdc"), m_sasi(*this, "sasi") { } void slicer(machine_config &config); private: void sio_out_w(uint8_t data); DECLARE_WRITE_LINE_MEMBER(drive_size_w); template DECLARE_WRITE_LINE_MEMBER(drive_sel_w); void slicer_io(address_map &map); void slicer_map(address_map &map); required_device m_fdc; required_device m_sasi; }; void slicer_state::sio_out_w(uint8_t data) { floppy_image_device *floppy; int state = (data & 0x80) ? 0 : 1; char devname[8]; for(int i = 0; i < 4; i++) { sprintf(devname, "%d", i); floppy = m_fdc->subdevice(devname)->get_device(); if(floppy) floppy->mon_w(state); } } template WRITE_LINE_MEMBER(slicer_state::drive_sel_w) { floppy_image_device *floppy; char devname[8]; if (!state) return; sprintf(devname, "%d", drive); floppy = m_fdc->subdevice(devname)->get_device(); m_fdc->set_floppy(floppy); } WRITE_LINE_MEMBER(slicer_state::drive_size_w) { m_fdc->set_unscaled_clock (state ? 1'000'000 : 2'000'000); } void slicer_state::slicer_map(address_map &map) { map(0x00000, 0x3ffff).ram(); // fixed 256k for now map(0xf8000, 0xfffff).rom().region("bios", 0); } void slicer_state::slicer_io(address_map &map) { map.unmap_value_high(); map(0x0000, 0x007f).rw(m_fdc, FUNC(fd1797_device::read), FUNC(fd1797_device::write)).umask16(0x00ff); //PCS0 map(0x0080, 0x00ff).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask16(0x00ff); //PCS1 map(0x0100, 0x010f).mirror(0x0070).w("drivelatch", FUNC(ls259_device::write_d0)).umask16(0x00ff); //PCS2 // TODO: 0x180 sets ack map(0x0180, 0x0180).r("sasi_data_in", FUNC(input_buffer_device::read)).w("sasi_data_out", FUNC(output_latch_device::write)).umask16(0x00ff); //PCS3 map(0x0181, 0x0181).r("sasi_ctrl_in", FUNC(input_buffer_device::read)); map(0x0184, 0x0184).r("sasi_data_in", FUNC(input_buffer_device::read)).w("sasi_data_out", FUNC(output_latch_device::write)).umask16(0x00ff); map(0x0185, 0x0185).r("sasi_ctrl_in", FUNC(input_buffer_device::read)); } static void slicer_floppies(device_slot_interface &device) { device.option_add("525dd", FLOPPY_525_DD); device.option_add("8dsdd", FLOPPY_8_DSDD); } void slicer_state::slicer(machine_config &config) { i80186_cpu_device &maincpu(I80186(config, "maincpu", 16_MHz_XTAL)); // 8 MHz clock output maincpu.set_addrmap(AS_PROGRAM, &slicer_state::slicer_map); maincpu.set_addrmap(AS_IO, &slicer_state::slicer_io); scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); duart.irq_cb().set("maincpu", FUNC(i80186_cpu_device::int0_w)); duart.a_tx_cb().set("rs232_1", FUNC(rs232_port_device::write_txd)); duart.b_tx_cb().set("rs232_2", FUNC(rs232_port_device::write_txd)); duart.outport_cb().set(FUNC(slicer_state::sio_out_w)); rs232_port_device &rs232_1(RS232_PORT(config, "rs232_1", default_rs232_devices, "terminal")); rs232_1.rxd_handler().set("duart", FUNC(scn2681_device::rx_a_w)); rs232_port_device &rs232_2(RS232_PORT(config, "rs232_2", default_rs232_devices, nullptr)); rs232_2.rxd_handler().set("duart", FUNC(scn2681_device::rx_b_w)); FD1797(config, m_fdc, 16_MHz_XTAL / 2 / 8); m_fdc->intrq_wr_callback().set("maincpu", FUNC(i80186_cpu_device::int1_w)); m_fdc->drq_wr_callback().set("maincpu", FUNC(i80186_cpu_device::drq0_w)); FLOPPY_CONNECTOR(config, "fdc:0", slicer_floppies, "525dd", floppy_image_device::default_mfm_floppy_formats); FLOPPY_CONNECTOR(config, "fdc:1", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats); FLOPPY_CONNECTOR(config, "fdc:2", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats); FLOPPY_CONNECTOR(config, "fdc:3", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats); ls259_device &drivelatch(LS259(config, "drivelatch")); // U29 drivelatch.q_out_cb<0>().set("sasi", FUNC(scsi_port_device::write_sel)); drivelatch.q_out_cb<1>().set("sasi", FUNC(scsi_port_device::write_rst)); drivelatch.q_out_cb<2>().set(FUNC(slicer_state::drive_sel_w<3>)); drivelatch.q_out_cb<3>().set(FUNC(slicer_state::drive_sel_w<2>)); drivelatch.q_out_cb<4>().set(FUNC(slicer_state::drive_sel_w<1>)); drivelatch.q_out_cb<5>().set(FUNC(slicer_state::drive_sel_w<0>)); drivelatch.q_out_cb<6>().set(FUNC(slicer_state::drive_size_w)); drivelatch.q_out_cb<7>().set("fdc", FUNC(fd1797_device::dden_w)); SCSI_PORT(config, m_sasi, 0); m_sasi->set_data_input_buffer("sasi_data_in"); m_sasi->bsy_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit3)); m_sasi->msg_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit4)); m_sasi->cd_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit5)); m_sasi->req_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit6)); m_sasi->io_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit7)); output_latch_device &sasi_data_out(OUTPUT_LATCH(config, "sasi_data_out")); m_sasi->set_output_latch(sasi_data_out); INPUT_BUFFER(config, "sasi_data_in"); INPUT_BUFFER(config, "sasi_ctrl_in"); } ROM_START( slicer ) ROM_REGION16_LE(0x8001, "bios", 0) // built from sources, reset.asm adds an extra byte ROM_LOAD("epbios.bin", 0x0000, 0x8001, CRC(96fe9dd4) SHA1(5fc43454fe7d51f2ae97aef822155dcd28eb7f23)) ROM_REGION(0x10000, "user1", 0) //slicer_h.bin : main slicer board, high byte //slicer_l.bin : main slicer board, low byte //slvid_cg.bin : slicer video/keyboard expansion board, character generator //slvid_e.bin : slicer video/keyboard expansion board, even byte //slvid_o.bin : slicer video/keyboard expansion board, odd byte ROM_LOAD( "slicer_h.bin", 0x000000, 0x004000, CRC(1f9a79b7) SHA1(2070c6818d39fe7ec4370fc2304469793a126731) ) ROM_LOAD( "slicer_l.bin", 0x000000, 0x004000, CRC(6feef94b) SHA1(174488591b727a4130166bcb2e83c0e74323d43b) ) ROM_LOAD( "slvid_cg.bin", 0x000000, 0x001000, CRC(d4d9ac2f) SHA1(866c760320b224ba8670501ea905de32193acedc) ) ROM_LOAD( "slvid_o.bin", 0x000000, 0x001000, CRC(c62dda77) SHA1(1d0b9abc53412b0725072d4c33c478fb5358ab5c) ) ROM_LOAD( "slvid_e.bin", 0x000000, 0x001000, CRC(8694274f) SHA1(8373baaea8d689bf52699b587942a57f26baf740) ) ROM_END COMP( 1983, slicer, 0, 0, slicer, 0, slicer_state, empty_init, "Slicer Computers", "Slicer", MACHINE_NO_SOUND )