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// 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 "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")
{
}
DECLARE_WRITE8_MEMBER(sio_out_w);
template<unsigned int drive> DECLARE_WRITE_LINE_MEMBER(drive_sel_w);
void slicer(machine_config &config);
void slicer_io(address_map &map);
void slicer_map(address_map &map);
protected:
required_device<fd1797_device> m_fdc;
required_device<scsi_port_device> m_sasi;
};
WRITE8_MEMBER(slicer_state::sio_out_w)
{
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<floppy_connector>(devname)->get_device();
if(floppy)
floppy->mon_w(state);
}
}
template<unsigned int drive>
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<floppy_connector>(devname)->get_device();
m_fdc->set_floppy(floppy);
}
ADDRESS_MAP_START(slicer_state::slicer_map)
AM_RANGE(0x00000, 0x3ffff) AM_RAM // fixed 256k for now
AM_RANGE(0xf8000, 0xfffff) AM_ROM AM_REGION("bios", 0)
ADDRESS_MAP_END
ADDRESS_MAP_START(slicer_state::slicer_io)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x007f) AM_DEVREADWRITE8("fdc", fd1797_device, read, write, 0x00ff) //PCS0
AM_RANGE(0x0080, 0x00ff) AM_DEVREADWRITE8("duart", scn2681_device, read, write, 0x00ff) //PCS1
AM_RANGE(0x0100, 0x0107) AM_MIRROR(0x0078) AM_DEVWRITE8("drivelatch", ls259_device, write_d0, 0x00ff) //PCS2
// TODO: 0x180 sets ack
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
AM_RANGE(0x0180, 0x0181) AM_DEVREAD8("sasi_ctrl_in", input_buffer_device, read, 0xff00)
AM_RANGE(0x0184, 0x0185) AM_DEVREAD8("sasi_data_in", input_buffer_device, read, 0x00ff) AM_DEVWRITE8("sasi_data_out", output_latch_device, write, 0x00ff)
AM_RANGE(0x0184, 0x0185) AM_DEVREAD8("sasi_ctrl_in", input_buffer_device, read, 0xff00)
ADDRESS_MAP_END
static SLOT_INTERFACE_START( slicer_floppies )
SLOT_INTERFACE("525dd", FLOPPY_525_DD)
SLOT_INTERFACE("8dsdd", FLOPPY_8_DSDD)
SLOT_INTERFACE_END
MACHINE_CONFIG_START(slicer_state::slicer)
MCFG_CPU_ADD("maincpu", I80186, XTAL(16'000'000) / 2)
MCFG_CPU_PROGRAM_MAP(slicer_map)
MCFG_CPU_IO_MAP(slicer_io)
MCFG_DEVICE_ADD("duart", SCN2681, XTAL(3'686'400))
MCFG_MC68681_IRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, int0_w))
MCFG_MC68681_A_TX_CALLBACK(DEVWRITELINE("rs232_1", rs232_port_device, write_txd))
MCFG_MC68681_B_TX_CALLBACK(DEVWRITELINE("rs232_2", rs232_port_device, write_txd))
MCFG_MC68681_OUTPORT_CALLBACK(WRITE8(slicer_state, sio_out_w))
MCFG_RS232_PORT_ADD("rs232_1", default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("duart", scn2681_device, rx_a_w))
MCFG_RS232_PORT_ADD("rs232_2", default_rs232_devices, nullptr)
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("duart", scn2681_device, rx_b_w))
MCFG_FD1797_ADD("fdc", XTAL(16'000'000)/2/8)
MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, int1_w))
MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, drq0_w))
MCFG_FLOPPY_DRIVE_ADD("fdc:0", slicer_floppies, "525dd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", slicer_floppies, nullptr, floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:2", slicer_floppies, nullptr, floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:3", slicer_floppies, nullptr, floppy_image_device::default_floppy_formats)
MCFG_DEVICE_ADD("drivelatch", LS259, 0) // U29
MCFG_ADDRESSABLE_LATCH_Q0_OUT_CB(DEVWRITELINE("sasi", scsi_port_device, write_sel))
MCFG_ADDRESSABLE_LATCH_Q1_OUT_CB(DEVWRITELINE("sasi", scsi_port_device, write_rst))
MCFG_ADDRESSABLE_LATCH_Q2_OUT_CB(WRITELINE(slicer_state, drive_sel_w<3>))
MCFG_ADDRESSABLE_LATCH_Q3_OUT_CB(WRITELINE(slicer_state, drive_sel_w<2>))
MCFG_ADDRESSABLE_LATCH_Q4_OUT_CB(WRITELINE(slicer_state, drive_sel_w<1>))
MCFG_ADDRESSABLE_LATCH_Q5_OUT_CB(WRITELINE(slicer_state, drive_sel_w<0>))
MCFG_ADDRESSABLE_LATCH_Q7_OUT_CB(DEVWRITELINE("fdc", fd1797_device, dden_w))
MCFG_DEVICE_ADD("sasi", SCSI_PORT, 0)
MCFG_SCSI_DATA_INPUT_BUFFER("sasi_data_in")
MCFG_SCSI_BSY_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit3))
MCFG_SCSI_MSG_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit4))
MCFG_SCSI_CD_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit5))
MCFG_SCSI_REQ_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit6))
MCFG_SCSI_IO_HANDLER(DEVWRITELINE("sasi_ctrl_in", input_buffer_device, write_bit7))
MCFG_SCSI_OUTPUT_LATCH_ADD("sasi_data_out", "sasi")
MCFG_DEVICE_ADD("sasi_data_in", INPUT_BUFFER, 0)
MCFG_DEVICE_ADD("sasi_ctrl_in", INPUT_BUFFER, 0)
MACHINE_CONFIG_END
ROM_START( slicer )
ROM_REGION(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, 0, "Slicer Computers", "Slicer", MACHINE_NO_SOUND )
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