trunk/src/mess/drivers/slicer.c
| r0 | r243109 | |
|---|
| 1 | // Slicer Computers Slicer 80186 SBC |
| 2 | // The bios makefile refers to a "exe3bin" utility, this can be substituted with FreeDOS exe2bin and the /l=0xf800 option |
| 3 | // which will fixup the relocations |
| 4 | |
| 5 | #include "emu.h" |
| 6 | #include "cpu/i86/i186.h" |
| 7 | #include "machine/wd_fdc.h" |
| 8 | #include "machine/mc68681.h" |
| 9 | #include "bus/rs232/rs232.h" |
| 10 | #include "bus/isa/isa.h" |
| 11 | #include "bus/scsi/scsi.h" |
| 12 | |
| 13 | class slicer_state : public driver_device |
| 14 | { |
| 15 | public: |
| 16 | slicer_state(const machine_config &mconfig, device_type type, const char *tag) : |
| 17 | driver_device(mconfig, type, tag), |
| 18 | m_fdc(*this, "fdc"), |
| 19 | m_sasi(*this, "sasi") |
| 20 | {} |
| 21 | |
| 22 | required_device<fd1797_t> m_fdc; |
| 23 | required_device<SCSI_PORT_DEVICE> m_sasi; |
| 24 | |
| 25 | DECLARE_WRITE8_MEMBER(sio_out_w); |
| 26 | DECLARE_WRITE8_MEMBER(drive_sel_w); |
| 27 | }; |
| 28 | |
| 29 | WRITE8_MEMBER(slicer_state::sio_out_w) |
| 30 | { |
| 31 | floppy_image_device *floppy; |
| 32 | int state = (data & 0x80) ? 0 : 1; |
| 33 | char devname[8]; |
| 34 | |
| 35 | for(int i = 0; i < 4; i++) |
| 36 | { |
| 37 | sprintf(devname, "%d", i); |
| 38 | floppy = m_fdc->subdevice<floppy_connector>(devname)->get_device(); |
| 39 | if(floppy) |
| 40 | floppy->mon_w(state); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | WRITE8_MEMBER(slicer_state::drive_sel_w) |
| 45 | { |
| 46 | data &= 1; |
| 47 | switch(offset) |
| 48 | { |
| 49 | case 0: |
| 50 | m_sasi->write_sel(data); |
| 51 | break; |
| 52 | case 1: |
| 53 | m_sasi->write_rst(data); |
| 54 | break; |
| 55 | case 7: |
| 56 | m_fdc->dden_w(data); |
| 57 | break; |
| 58 | |
| 59 | default: |
| 60 | { |
| 61 | floppy_image_device *floppy; |
| 62 | char devname[8]; |
| 63 | unsigned int drive = 3 - (offset - 2); |
| 64 | if((drive > 3) || !data) |
| 65 | break; |
| 66 | |
| 67 | sprintf(devname, "%d", drive); |
| 68 | floppy = m_fdc->subdevice<floppy_connector>(devname)->get_device(); |
| 69 | m_fdc->set_floppy(floppy); |
| 70 | break; |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | static ADDRESS_MAP_START( slicer_map, AS_PROGRAM, 16, slicer_state ) |
| 76 | AM_RANGE(0x00000, 0x3ffff) AM_RAM // fixed 256k for now |
| 77 | AM_RANGE(0xf8000, 0xfffff) AM_ROM AM_REGION("bios", 0) |
| 78 | ADDRESS_MAP_END |
| 79 | |
| 80 | static ADDRESS_MAP_START( slicer_io, AS_IO, 16, slicer_state ) |
| 81 | ADDRESS_MAP_UNMAP_HIGH |
| 82 | AM_RANGE(0x0000, 0x007f) AM_DEVREADWRITE8("fdc", fd1797_t, read, write, 0x00ff) //PCS0 |
| 83 | AM_RANGE(0x0080, 0x00ff) AM_DEVREADWRITE8("sc2681", mc68681_device, read, write, 0x00ff) //PCS1 |
| 84 | AM_RANGE(0x0100, 0x017f) AM_WRITE8(drive_sel_w, 0x00ff) //PCS2 |
| 85 | // TODO: 0x180 sets ack |
| 86 | AM_RANGE(0x0180, 0x0181) AM_DEVREAD8("sasi_data_in", input_buffer_device, read, 0x00ff) AM_DEVWRITE8("sasi_data_out", output_latch_device, write, 0x00ff) //PCS3 |
| 87 | AM_RANGE(0x0180, 0x0181) AM_DEVREAD8("sasi_ctrl_in", input_buffer_device, read, 0xff00) |
| 88 | AM_RANGE(0x0184, 0x0185) AM_DEVREAD8("sasi_data_in", input_buffer_device, read, 0x00ff) AM_DEVWRITE8("sasi_data_out", output_latch_device, write, 0x00ff) |
| 89 | AM_RANGE(0x0184, 0x0185) AM_DEVREAD8("sasi_ctrl_in", input_buffer_device, read, 0xff00) |
| 90 | ADDRESS_MAP_END |
| 91 | |
| 92 | static SLOT_INTERFACE_START( slicer_floppies ) |
| 93 | SLOT_INTERFACE("525dd", FLOPPY_525_DD) |
| 94 | SLOT_INTERFACE("8dsdd", FLOPPY_8_DSDD) |
| 95 | SLOT_INTERFACE_END |
| 96 | |
| 97 | static MACHINE_CONFIG_START( slicer, slicer_state ) |
| 98 | MCFG_CPU_ADD("maincpu", I80186, XTAL_16MHz / 2) |
| 99 | MCFG_CPU_PROGRAM_MAP(slicer_map) |
| 100 | MCFG_CPU_IO_MAP(slicer_io) |
| 101 | |
| 102 | MCFG_MC68681_ADD("sc2681", XTAL_3_6864MHz) |
| 103 | MCFG_MC68681_IRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, int0_w)) |
| 104 | MCFG_MC68681_A_TX_CALLBACK(DEVWRITELINE("rs232_1", rs232_port_device, write_txd)) |
| 105 | MCFG_MC68681_B_TX_CALLBACK(DEVWRITELINE("rs232_2", rs232_port_device, write_txd)) |
| 106 | MCFG_MC68681_OUTPORT_CALLBACK(WRITE8(slicer_state, sio_out_w)) |
| 107 | |
| 108 | MCFG_RS232_PORT_ADD("rs232_1", default_rs232_devices, "terminal") |
| 109 | MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sc2681", mc68681_device, rx_a_w)) |
| 110 | MCFG_RS232_PORT_ADD("rs232_2", default_rs232_devices, NULL) |
| 111 | MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sc2681", mc68681_device, rx_b_w)) |
| 112 | |
| 113 | MCFG_FD1797x_ADD("fdc", XTAL_16MHz/2/8) |
| 114 | MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, int1_w)) |
| 115 | MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, drq0_w)) |
| 116 | MCFG_FLOPPY_DRIVE_ADD("fdc:0", slicer_floppies, "525dd", floppy_image_device::default_floppy_formats) |
| 117 | MCFG_FLOPPY_DRIVE_ADD("fdc:1", slicer_floppies, NULL, floppy_image_device::default_floppy_formats) |
| 118 | MCFG_FLOPPY_DRIVE_ADD("fdc:2", slicer_floppies, NULL, floppy_image_device::default_floppy_formats) |
| 119 | MCFG_FLOPPY_DRIVE_ADD("fdc:3", slicer_floppies, NULL, floppy_image_device::default_floppy_formats) |
| 120 | |
| 121 | MCFG_DEVICE_ADD("sasi", SCSI_PORT, 0) |
| 122 | MCFG_SCSI_DATA_INPUT_BUFFER("sasi_data_in") |
| 123 | MCFG_SCSI_BSY_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit3)) |
| 124 | MCFG_SCSI_MSG_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit4)) |
| 125 | MCFG_SCSI_CD_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit5)) |
| 126 | MCFG_SCSI_REQ_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit6)) |
| 127 | MCFG_SCSI_IO_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit7)) |
| 128 | |
| 129 | MCFG_SCSI_OUTPUT_LATCH_ADD("sasi_data_out", "sasi") |
| 130 | MCFG_DEVICE_ADD("sasi_data_in", INPUT_BUFFER, 0) |
| 131 | MCFG_DEVICE_ADD("sasi_ctrl_in", INPUT_BUFFER, 0) |
| 132 | MACHINE_CONFIG_END |
| 133 | |
| 134 | ROM_START( slicer ) |
| 135 | ROM_REGION(0x8001, "bios", 0) |
| 136 | // built from sources, reset.asm adds an extra byte |
| 137 | ROM_LOAD("epbios.bin", 0x0000, 0x8001, CRC(96fe9dd4) SHA1(5fc43454fe7d51f2ae97aef822155dcd28eb7f23)) |
| 138 | ROM_END |
| 139 | |
| 140 | COMP( 1983, slicer, 0, 0, slicer, 0, driver_device, 0, "Slicer Computers", "Slicer", GAME_NOT_WORKING | GAME_NO_SOUND) |