// license:BSD-3-Clause // copyright-holders:Carl // 20MB HDD image CHS 512,5,17 #include "emu.h" #include "cpu/i86/i86.h" #include "cpu/i8089/i8089.h" #include "machine/ram.h" #include "machine/pic8259.h" #include "machine/pit8253.h" #include "machine/i8255.h" #include "machine/z80sio.h" #include "machine/wd_fdc.h" #include "machine/acs8600_ics.h" #include "imagedev/harddriv.h" #include "bus/rs232/rs232.h" class altos8600_state : public driver_device { public: altos8600_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_dmac(*this, "dmac"), m_pic(*this, "pic8259%u", 1U), m_uart8274(*this, "uart8274"), m_fdc(*this, "fd1797"), m_ram(*this, RAM_TAG), m_ics(*this, "ics"), m_hdd(*this, "hdd"), m_bios(*this, "bios") {} void altos8600(machine_config &config); private: DECLARE_READ16_MEMBER(cpuram_r); DECLARE_WRITE16_MEMBER(cpuram_w); DECLARE_READ16_MEMBER(stkram_r); DECLARE_WRITE16_MEMBER(stkram_w); DECLARE_READ16_MEMBER(coderam_r); DECLARE_WRITE16_MEMBER(coderam_w); DECLARE_READ16_MEMBER(xtraram_r); DECLARE_WRITE16_MEMBER(xtraram_w); DECLARE_READ16_MEMBER(cpuio_r); DECLARE_WRITE16_MEMBER(cpuio_w); DECLARE_READ16_MEMBER(nmi_r); DECLARE_WRITE16_MEMBER(nmi_w); DECLARE_READ16_MEMBER(dmacram_r); DECLARE_WRITE16_MEMBER(dmacram_w); DECLARE_READ16_MEMBER(mmuaddr_r); DECLARE_WRITE16_MEMBER(mmuaddr_w); DECLARE_READ16_MEMBER(mmuflags_r); DECLARE_WRITE16_MEMBER(mmuflags_w); DECLARE_READ8_MEMBER(get_slave_ack); DECLARE_READ16_MEMBER(fault_r); DECLARE_READ16_MEMBER(errlo_r); DECLARE_READ16_MEMBER(errhi_r); DECLARE_WRITE16_MEMBER(clear_w); DECLARE_WRITE8_MEMBER(cattn_w); DECLARE_READ8_MEMBER(hd_r); DECLARE_WRITE8_MEMBER(hd_w); DECLARE_READ8_MEMBER(romport_r); DECLARE_WRITE8_MEMBER(romport_w); DECLARE_WRITE8_MEMBER(clrsys_w); DECLARE_WRITE16_MEMBER(mode_w); DECLARE_WRITE_LINE_MEMBER(cpuif_w); DECLARE_WRITE_LINE_MEMBER(fddrq_w); DECLARE_WRITE_LINE_MEMBER(sintr1_w); DECLARE_WRITE8_MEMBER(ics_attn_w); IRQ_CALLBACK_MEMBER(inta); virtual void machine_start() override; virtual void machine_reset() override; void code_mem(address_map &map); void cpu_io(address_map &map); void cpu_mem(address_map &map); void dmac_io(address_map &map); void dmac_mem(address_map &map); void extra_mem(address_map &map); void stack_mem(address_map &map); u16 xlate_r(address_space &space, offs_t offset, u16 mem_mask, int permbit); void xlate_w(address_space &space, offs_t offset, u16 data, u16 mem_mask, int permbit); void seterr(offs_t offset, u16 mem_mask, u16 err_mask); bool find_sector(); bool write_sector(u8 data); u8 read_sector(); void format_sector(); required_device m_maincpu; required_device m_dmac; required_device_array m_pic; required_device m_uart8274; required_device m_fdc; required_device m_ram; required_device m_ics; required_device m_hdd; required_memory_region m_bios; u8 m_mmuaddr[256], m_romport[4], m_dmamplex; u16 m_mmuflags[256], m_mmuerr, m_mode, m_mmueaddr[2]; bool m_cpuif, m_user, m_nmiinh, m_nmistat; u32 m_lba; u16 m_head, m_sect, m_cyl, m_curcyl; int m_secoff; u8 m_cmd, m_stat; bool m_cylhi, m_sechi; const struct hard_disk_info* m_geom; u8 m_sector[512]; }; void altos8600_state::machine_start() { m_mode = 0; save_item(NAME(m_mmuaddr)); save_item(NAME(m_romport)); save_item(NAME(m_dmamplex)); save_item(NAME(m_mmuflags)); save_item(NAME(m_mmuerr)); save_item(NAME(m_mode)); save_item(NAME(m_mmueaddr)); save_item(NAME(m_cpuif)); save_item(NAME(m_user)); save_item(NAME(m_nmiinh)); save_item(NAME(m_nmistat)); save_item(NAME(m_lba)); save_item(NAME(m_head)); save_item(NAME(m_sect)); save_item(NAME(m_cyl)); save_item(NAME(m_curcyl)); save_item(NAME(m_secoff)); save_item(NAME(m_cmd)); save_item(NAME(m_stat)); save_item(NAME(m_cylhi)); save_item(NAME(m_sechi)); save_item(NAME(m_sector)); if(m_hdd->get_hard_disk_file()) m_geom = hard_disk_get_info(m_hdd->get_hard_disk_file()); else m_geom = nullptr; } void altos8600_state::machine_reset() { m_mode = (m_mode & 0x10) | 2; m_romport[0] = 0x80; m_cpuif = false; m_user = false; m_nmiinh = true; m_nmistat = false; m_cylhi = m_sechi = false; m_stat = 0; if(m_hdd->get_hard_disk_file()) m_geom = hard_disk_get_info(m_hdd->get_hard_disk_file()); else m_geom = nullptr; } bool altos8600_state::find_sector() { u8 head = m_head >> 4; if(!m_geom) return false; if(m_cyl != m_curcyl) return false; if(m_curcyl > m_geom->cylinders) return false; if(head > m_geom->heads) return false; if(m_sect > m_geom->sectors) return false; m_lba = (m_cyl * m_geom->heads + head) * m_geom->sectors + m_sect; return true; } u8 altos8600_state::read_sector() { int secoff = m_secoff; m_secoff++; if(m_cmd == 1) { switch(secoff) { case 0: return m_curcyl; case 1: return (m_head & 0xf0) | (m_curcyl >> 8); case 2: return m_sect; } secoff -= 3; } if(!secoff) hard_disk_read(m_hdd->get_hard_disk_file(), m_lba, m_sector); if(secoff >= 511) { m_dmac->drq1_w(CLEAR_LINE); m_pic[1]->ir0_w(ASSERT_LINE); m_stat &= ~1; m_stat |= 2; } if(secoff >= 512) return 0; return m_sector[secoff]; } bool altos8600_state::write_sector(u8 data) { if(m_secoff >= 512) return true; m_sector[m_secoff++] = data; if(m_secoff == 512) { m_stat &= ~1; m_stat |= 2; hard_disk_write(m_hdd->get_hard_disk_file(), m_lba, m_sector); m_dmac->drq1_w(CLEAR_LINE); m_pic[1]->ir0_w(ASSERT_LINE); return true; } return false; } READ8_MEMBER(altos8600_state::hd_r) { switch(offset) { case 1: if(BIT(m_stat, 0) && (m_cmd & 1)) return read_sector(); break; case 3: m_pic[1]->ir0_w(CLEAR_LINE); return m_stat; } return 0; } WRITE8_MEMBER(altos8600_state::hd_w) { switch(offset) { case 0: m_head = data; if((m_head & 3) == 1) m_stat |= 0x80; else m_stat &= ~0x80; break; case 1: if(BIT(m_stat, 0)) { switch(m_cmd) { case 2: write_sector(data); break; case 4: m_secoff++; if(m_secoff == 4) { m_dmac->drq1_w(CLEAR_LINE); m_stat &= ~1; m_stat |= 2; } break; } break; } if(m_sechi) { m_sechi = false; m_sect |= (data & 7) << 8; } else { m_sechi = true; m_sect = data; } break; case 2: if(m_cylhi) { m_cylhi = false; m_cyl |= (data & 7) << 8; } else { m_cylhi = true; m_cyl = data; } break; case 3: m_cmd = data; m_cylhi = false; m_sechi = false; m_dmac->drq1_w(CLEAR_LINE); if(!BIT(m_stat, 7)) break; m_stat &= 0x80; switch(m_cmd) { case 0x10: m_curcyl = m_cyl; m_stat |= 2; break; case 0x20: m_curcyl = 0; m_stat |= 2; break; case 0x1: case 0x2: case 0x9: if(!find_sector()) { m_stat |= 0xa; break; } case 0x4: m_secoff = 0; m_stat |= 1; m_dmac->drq1_w(ASSERT_LINE); break; } m_pic[1]->ir0_w(ASSERT_LINE); break; } } WRITE_LINE_MEMBER(altos8600_state::cpuif_w) { if(m_user) { seterr(0, 0, 1); return; } m_cpuif = state ? true : false; if(state && BIT(m_mode, 0)) m_user = true; } WRITE_LINE_MEMBER(altos8600_state::fddrq_w) { if(!m_dmamplex) m_dmac->drq2_w(state); } WRITE_LINE_MEMBER(altos8600_state::sintr1_w) { if(state) { m_dmac->drq1_w(CLEAR_LINE); m_pic[1]->ir0_w(ASSERT_LINE); m_pic[1]->ir3_w(ASSERT_LINE); m_stat &= ~1; m_stat |= 2; } else m_pic[1]->ir3_w(CLEAR_LINE); } READ16_MEMBER(altos8600_state::fault_r) { return m_mmuerr; } READ16_MEMBER(altos8600_state::errlo_r) { return m_mmueaddr[0]; } READ16_MEMBER(altos8600_state::errhi_r) { return m_mmueaddr[1]; } WRITE16_MEMBER(altos8600_state::clear_w) { m_mmuerr = 0xffff; m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); m_nmistat = false; } READ16_MEMBER(altos8600_state::mmuaddr_r) { return m_mmuaddr[offset & 0xff]; } WRITE16_MEMBER(altos8600_state::mmuaddr_w) { if(mem_mask & 0xff) m_mmuaddr[offset & 0xff] = data & 0xff; } READ16_MEMBER(altos8600_state::mmuflags_r) { return m_mmuflags[offset & 0xff] | (m_user ? 1 : 0) | (m_mode & 2); } WRITE16_MEMBER(altos8600_state::mmuflags_w) { data &= ~0x17; if(mem_mask == 0xff) data |= 0xff00; else if(mem_mask == 0xff00) return; m_mmuflags[offset & 0xff] = data; } WRITE8_MEMBER(altos8600_state::cattn_w) { m_dmac->sel_w(offset & 1 ? ASSERT_LINE : CLEAR_LINE); m_dmac->ca_w(ASSERT_LINE); m_dmac->ca_w(CLEAR_LINE); } READ8_MEMBER(altos8600_state::romport_r) { if(offset & 1) return m_romport[offset >> 1]; return 0; } WRITE8_MEMBER(altos8600_state::romport_w) { const char *fdc = nullptr; switch(offset) { case 1: //m_romport[0] = data; break; case 3: m_romport[1] = data; if(!BIT(data, 0)) fdc = "0"; else if(!BIT(data, 1)) fdc = "1"; else if(!BIT(data, 2)) fdc = "2"; else if(!BIT(data, 3)) fdc = "3"; if(fdc != nullptr) m_fdc->set_floppy(m_fdc->subdevice(fdc)->get_device()); else m_fdc->set_floppy(nullptr); if(m_nmistat && m_nmiinh && !BIT(data, 4)) { m_mode &= ~1; m_user = false; m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE); } else if(BIT(data, 4) && m_nmistat) m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); m_nmiinh = BIT(data, 4) ? true : false; break; case 5: m_romport[2] = data; if(BIT(data, 3)) m_fdc->soft_reset(); m_fdc->dden_w(!BIT(data, 2) ? true : false); m_dmamplex = (data >> 4) & 3; break; case 7: m_romport[3] = data; break; } } WRITE8_MEMBER(altos8600_state::clrsys_w) { m_pic[0]->ir0_w(CLEAR_LINE); } WRITE8_MEMBER(altos8600_state::ics_attn_w) { if(!offset) { m_ics->attn_w(ASSERT_LINE); m_ics->attn_w(CLEAR_LINE); } } WRITE16_MEMBER(altos8600_state::mode_w) { m_mode = data; if(m_cpuif && BIT(m_mode, 0)) m_user = true; } READ8_MEMBER(altos8600_state::get_slave_ack) { if(offset == 2) return m_pic[1]->acknowledge(); else if(offset == 3) return m_pic[2]->acknowledge(); return 0x00; } void altos8600_state::seterr(offs_t offset, u16 mem_mask, u16 err_mask) { if(machine().side_effects_disabled()) return; logerror("Fault at %05x type %04x\n", offset << 1, err_mask); if(!m_nmiinh) { m_mode &= ~1; m_user = false; m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE); } m_nmistat = true; m_mmuerr &= ~err_mask; m_mmueaddr[0] = (offset << 1) | (!(mem_mask & 0xff) ? 1 : 0); m_mmueaddr[1] = (m_user ? 0x100 : 0) | (m_mode & 2 ? 0x200 : 0) | ((offset >> 3) & 0xf000); } u16 altos8600_state::xlate_r(address_space &space, offs_t offset, u16 mem_mask, int permbit) { u8 page = m_mmuaddr[offset >> 11]; u16 flags = m_mmuflags[offset >> 11]; if((offset >= 0x7f000) && BIT(m_mode, 1)) return m_bios->as_u16(offset & 0xfff); if(m_user && !BIT(flags, 11)) seterr(offset, mem_mask, 0x800); else if(m_user && !BIT(flags, permbit)) seterr(offset, mem_mask, 1 << permbit); return ((u16 *)(m_ram->pointer()))[(page << 11) | (offset & 0x7ff)]; } void altos8600_state::xlate_w(address_space &space, offs_t offset, u16 data, u16 mem_mask, int permbit) { u8 page = m_mmuaddr[offset >> 11]; u16 flags = m_mmuflags[offset >> 11]; if(m_user && !BIT(flags, 7)) { seterr(offset, mem_mask, 0x80); return; } else if(!m_user && !BIT(flags, 8)) { seterr(offset, mem_mask, 0x10); return; } else if(m_user && !BIT(flags, permbit)) seterr(offset, mem_mask, 1 << permbit); else if(m_user && BIT(flags, 3) && ((offset & 0x7ff) < 64)) seterr(offset, mem_mask, 8); COMBINE_DATA(&((u16 *)(m_ram->pointer()))[(page << 11) | (offset & 0x7ff)]); m_mmuflags[offset >> 11] |= 4; } READ16_MEMBER(altos8600_state::cpuram_r) { return xlate_r(space, offset, mem_mask, 14); } WRITE16_MEMBER(altos8600_state::cpuram_w) { xlate_w(space, offset, data, mem_mask, 14); } READ16_MEMBER(altos8600_state::stkram_r) { return xlate_r(space, offset, mem_mask, 13); } WRITE16_MEMBER(altos8600_state::stkram_w) { xlate_w(space, offset, data, mem_mask, 13); } READ16_MEMBER(altos8600_state::coderam_r) { return xlate_r(space, offset, mem_mask, 15); } WRITE16_MEMBER(altos8600_state::coderam_w) { xlate_w(space, offset, data, mem_mask, 15); } READ16_MEMBER(altos8600_state::xtraram_r) { return xlate_r(space, offset, mem_mask, 12); } WRITE16_MEMBER(altos8600_state::xtraram_w) { xlate_w(space, offset, data, mem_mask, 12); } READ16_MEMBER(altos8600_state::cpuio_r) { if(m_user && !machine().side_effects_disabled()) { m_pic[0]->ir0_w(ASSERT_LINE); return 0; } return m_dmac->space(AS_IO).read_word_unaligned(offset << 1, mem_mask); } WRITE16_MEMBER(altos8600_state::cpuio_w) { if(m_user && !machine().side_effects_disabled()) { m_pic[0]->ir0_w(ASSERT_LINE); return; } m_dmac->space(AS_IO).write_word_unaligned(offset << 1, data, mem_mask); } READ16_MEMBER(altos8600_state::dmacram_r) { u8 page = m_mmuaddr[offset >> 11]; u16 flags = m_mmuflags[offset >> 11]; if((offset >= 0x7f000) && BIT(m_mode, 1)) return m_bios->as_u16(offset & 0xfff); if(!BIT(flags, 10)) seterr(offset, mem_mask, 0x400); return ((u16 *)(m_ram->pointer()))[(page << 11) | (offset & 0x7ff)]; } WRITE16_MEMBER(altos8600_state::dmacram_w) { u8 page = m_mmuaddr[offset >> 11]; u16 flags = m_mmuflags[offset >> 11]; if(!BIT(flags, 6)) { seterr(offset, mem_mask, 0x40); return; } COMBINE_DATA(&((u16 *)(m_ram->pointer()))[(page << 11) | (offset & 0x7ff)]); m_mmuflags[offset >> 11] |= 4; } READ16_MEMBER(altos8600_state::nmi_r) { seterr(offset, mem_mask, 0x100); return 0; } WRITE16_MEMBER(altos8600_state::nmi_w) { seterr(offset, mem_mask, 0x100); } IRQ_CALLBACK_MEMBER(altos8600_state::inta) { m_user = false; m_mode &= ~1; return m_pic[0]->acknowledge(); } void altos8600_state::cpu_mem(address_map &map) { map(0x00000, 0xfffff).rw(FUNC(altos8600_state::cpuram_r), FUNC(altos8600_state::cpuram_w)); } void altos8600_state::stack_mem(address_map &map) { map(0x00000, 0xfffff).rw(FUNC(altos8600_state::stkram_r), FUNC(altos8600_state::stkram_w)); } void altos8600_state::code_mem(address_map &map) { map(0x00000, 0xfffff).rw(FUNC(altos8600_state::coderam_r), FUNC(altos8600_state::coderam_w)); } void altos8600_state::extra_mem(address_map &map) { map(0x00000, 0xfffff).rw(FUNC(altos8600_state::xtraram_r), FUNC(altos8600_state::xtraram_w)); } void altos8600_state::cpu_io(address_map &map) { map(0x0000, 0xffff).rw(FUNC(altos8600_state::cpuio_r), FUNC(altos8600_state::cpuio_w)); } void altos8600_state::dmac_mem(address_map &map) { map(0x00000, 0xfffff).rw(FUNC(altos8600_state::dmacram_r), FUNC(altos8600_state::dmacram_w)); } void altos8600_state::dmac_io(address_map &map) { map(0x0000, 0xffff).rw(FUNC(altos8600_state::nmi_r), FUNC(altos8600_state::nmi_w)); map(0x0000, 0x0007).r(FUNC(altos8600_state::fault_r)); map(0x0008, 0x000f).w(FUNC(altos8600_state::clear_w)); map(0x0010, 0x0017).r(FUNC(altos8600_state::errlo_r)); map(0x0018, 0x001f).r(FUNC(altos8600_state::errhi_r)); map(0x0020, 0x0027).rw(FUNC(altos8600_state::hd_r), FUNC(altos8600_state::hd_w)).umask16(0x00ff); map(0x0030, 0x0037).w(FUNC(altos8600_state::mode_w)); map(0x0038, 0x003f).w(FUNC(altos8600_state::cattn_w)); map(0x0040, 0x0047).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write)).umask16(0x00ff); map(0x0040, 0x0047).rw(m_fdc, FUNC(fd1797_device::read), FUNC(fd1797_device::write)).umask16(0xff00); map(0x0048, 0x004f).rw(m_uart8274, FUNC(i8274_new_device::cd_ba_r), FUNC(i8274_new_device::cd_ba_w)).umask16(0x00ff); map(0x0048, 0x004f).rw("pit", FUNC(pit8253_device::read), FUNC(pit8253_device::write)).umask16(0xff00); map(0x0050, 0x0057).rw(FUNC(altos8600_state::romport_r), FUNC(altos8600_state::romport_w)); map(0x0058, 0x005f).rw(m_pic[0], FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff); map(0x0058, 0x005f).w(FUNC(altos8600_state::clrsys_w)).umask16(0xff00); map(0x0060, 0x0067).rw(m_pic[1], FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff); map(0x0068, 0x006f).rw(m_pic[2], FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff); map(0x0070, 0x0077).noprw(); map(0x0078, 0x0079).w(FUNC(altos8600_state::ics_attn_w)); map(0x0200, 0x03ff).rw(FUNC(altos8600_state::mmuflags_r), FUNC(altos8600_state::mmuflags_w)); map(0x0400, 0x05ff).rw(FUNC(altos8600_state::mmuaddr_r), FUNC(altos8600_state::mmuaddr_w)); } static void altos8600_floppies(device_slot_interface &device) { device.option_add("8dd", FLOPPY_8_DSDD); } MACHINE_CONFIG_START(altos8600_state::altos8600) MCFG_DEVICE_ADD(m_maincpu, I8086, 5_MHz_XTAL) MCFG_DEVICE_PROGRAM_MAP(cpu_mem) MCFG_DEVICE_IO_MAP(cpu_io) MCFG_DEVICE_OPCODES_MAP(code_mem) MCFG_I8086_STACK_MAP(stack_mem) MCFG_I8086_CODE_MAP(code_mem) MCFG_I8086_EXTRA_MAP(extra_mem) MCFG_DEVICE_IRQ_ACKNOWLEDGE_DRIVER(altos8600_state, inta) MCFG_I8086_IF_HANDLER(WRITELINE(*this, altos8600_state, cpuif_w)) MCFG_DEVICE_ADD(m_dmac, I8089, 5_MHz_XTAL) MCFG_DEVICE_PROGRAM_MAP(dmac_mem) MCFG_DEVICE_IO_MAP(dmac_io) MCFG_I8089_DATA_WIDTH(16) MCFG_I8089_SINTR1(WRITELINE(*this, altos8600_state, sintr1_w)) MCFG_I8089_SINTR2(WRITELINE(m_pic[1], pic8259_device, ir4_w)) PIC8259(config, m_pic[0], 0); m_pic[0]->out_int_callback().set_inputline(m_maincpu, 0); m_pic[0]->in_sp_callback().set_constant(1); m_pic[0]->read_slave_ack_callback().set(FUNC(altos8600_state::get_slave_ack)); PIC8259(config, m_pic[1], 0); m_pic[1]->out_int_callback().set(m_pic[0], FUNC(pic8259_device::ir2_w)); m_pic[1]->in_sp_callback().set_constant(0); PIC8259(config, m_pic[2], 0); m_pic[2]->out_int_callback().set(m_pic[0], FUNC(pic8259_device::ir3_w)); m_pic[2]->in_sp_callback().set_constant(0); RAM(config, RAM_TAG).set_default_size("1M");//.set_extra_options("512K"); I8274_NEW(config, m_uart8274, 16_MHz_XTAL/4); m_uart8274->out_txda_callback().set("rs232a", FUNC(rs232_port_device::write_txd)); m_uart8274->out_dtra_callback().set("rs232a", FUNC(rs232_port_device::write_dtr)); m_uart8274->out_rtsa_callback().set("rs232a", FUNC(rs232_port_device::write_rts)); m_uart8274->out_txdb_callback().set("rs232b", FUNC(rs232_port_device::write_txd)); m_uart8274->out_dtrb_callback().set("rs232b", FUNC(rs232_port_device::write_dtr)); m_uart8274->out_rtsb_callback().set("rs232b", FUNC(rs232_port_device::write_rts)); m_uart8274->out_int_callback().set(m_pic[0], FUNC(pic8259_device::ir7_w)); rs232_port_device &rs232a(RS232_PORT(config, "rs232a", default_rs232_devices, nullptr)); rs232a.rxd_handler().set(m_uart8274, FUNC(i8274_new_device::rxa_w)); rs232a.dcd_handler().set(m_uart8274, FUNC(i8274_new_device::dcda_w)); rs232a.cts_handler().set(m_uart8274, FUNC(i8274_new_device::ctsa_w)); rs232_port_device &rs232b(RS232_PORT(config, "rs232b", default_rs232_devices, nullptr)); rs232b.rxd_handler().set(m_uart8274, FUNC(i8274_new_device::rxb_w)); rs232b.dcd_handler().set(m_uart8274, FUNC(i8274_new_device::dcdb_w)); rs232b.cts_handler().set(m_uart8274, FUNC(i8274_new_device::ctsb_w)); I8255A(config, "ppi", 0); pit8253_device &pit(PIT8253(config, "pit", 0)); pit.set_clk<0>(1228800); pit.out_handler<0>().set(m_uart8274, FUNC(i8274_new_device::rxca_w)); pit.out_handler<0>().append(m_uart8274, FUNC(i8274_new_device::txca_w)); pit.set_clk<1>(1228800); pit.out_handler<1>().set(m_uart8274, FUNC(i8274_new_device::rxtxcb_w)); pit.set_clk<2>(1228800); pit.out_handler<1>().set(m_pic[0], FUNC(pic8259_device::ir1_w)); FD1797(config, m_fdc, 2000000); m_fdc->intrq_wr_callback().set(m_pic[1], FUNC(pic8259_device::ir1_w)); m_fdc->drq_wr_callback().set(FUNC(altos8600_state::fddrq_w)); MCFG_FLOPPY_DRIVE_ADD("fd1797:0", altos8600_floppies, "8dd", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD("fd1797:1", altos8600_floppies, "8dd", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD("fd1797:2", altos8600_floppies, "8dd", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD("fd1797:3", altos8600_floppies, "8dd", floppy_image_device::default_floppy_formats) ACS8600_ICS(config, m_ics, 0); m_ics->set_host_space(m_dmac, AS_PROGRAM); // TODO: fixme m_ics->irq1_callback().set(m_pic[0], FUNC(pic8259_device::ir5_w)); m_ics->irq2_callback().set(m_pic[0], FUNC(pic8259_device::ir6_w)); MCFG_HARDDISK_ADD("hdd") MACHINE_CONFIG_END ROM_START(altos8600) ROM_REGION(0x2000, "bios", 0) ROM_SYSTEM_BIOS(0, "bios", "bios") ROMX_LOAD("11753_1.5_lo.bin", 0x0000, 0x1000, CRC(dfa7bf0e) SHA1(6628fd7c579423b51d2642aeaa7fc0405a989252), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("11753_1.5_hi.bin", 0x0001, 0x1000, CRC(9b5e812c) SHA1(c2ef24859edd48d2096db47e16855c9bc01dae75), ROM_SKIP(1) | ROM_BIOS(0)) ROM_END COMP( 1981, altos8600, 0, 0, altos8600, 0, altos8600_state, empty_init, "Altos Computer Systems", "ACS8600", MACHINE_NO_SOUND_HW)