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path: root/src/mame/drivers/asst128.cpp
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// license:BSD-3-Clause
// copyright-holders:Sergey Svishchev
#include "emu.h"
#include "machine/genpc.h"

#include "cpu/i86/i86.h"
#include "bus/pc_joy/pc_joy.h"
#include "bus/pc_kbd/keyboards.h"
#include "machine/pc_fdc.h"

#include "formats/asst128_dsk.h"


DECLARE_DEVICE_TYPE(ASST128_MOTHERBOARD, asst128_mb_device)

class asst128_mb_device : public ibm5150_mb_device
{
public:
	// construction/destruction
	asst128_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
		: ibm5150_mb_device(mconfig, ASST128_MOTHERBOARD, tag, owner, clock)
	{
	}

	void map(address_map &map);
};

void asst128_mb_device::map(address_map &map)
{
	map(0x0020, 0x002f).rw("pic8259", FUNC(pic8259_device::read), FUNC(pic8259_device::write));
	map(0x0040, 0x004f).rw("pit8253", FUNC(pit8253_device::read), FUNC(pit8253_device::write));
	map(0x0060, 0x006f).rw("ppi8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x0080, 0x008f).w(this, FUNC(asst128_mb_device::pc_page_w));
	map(0x00a0, 0x00a1).w(this, FUNC(asst128_mb_device::nmi_enable_w));
}

DEFINE_DEVICE_TYPE(ASST128_MOTHERBOARD, asst128_mb_device, "asst128_mb", "ASST128_MOTHERBOARD")

class asst128_state : public driver_device
{
public:
	// construction/destruction
	asst128_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_fdc(*this, "fdc")
	{ }

	required_device<cpu_device> m_maincpu;
	required_device<pc_fdc_xt_device> m_fdc;

	DECLARE_FLOPPY_FORMATS(asst128_formats);
	DECLARE_WRITE8_MEMBER(asst128_fdc_dor_w);

	void machine_start() override;
	void asst128(machine_config &config);
	void asst128_io(address_map &map);
	void asst128_map(address_map &map);
};

void asst128_state::machine_start()
{
	memory_region *font = memregion(":board0:cga_mc1502:gfx1");
	memcpy(font->base(), memregion("bios")->base() + 0xfa6e, 0x0400);
	memcpy(font->base() + 0x0400, memregion("bios")->base() + 0x4000, 0x0400);
}

WRITE8_MEMBER(asst128_state::asst128_fdc_dor_w)
{
	m_fdc->tc_w((data & 0x80) == 0x80);
	m_fdc->dor_w(space, offset, data, mem_mask);
}

void asst128_state::asst128_map(address_map &map)
{
	map.unmap_value_high();
	map(0xf0000, 0xfffff).rom().region("bios", 0);
}

void asst128_state::asst128_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m("mb", FUNC(asst128_mb_device::map));
	map(0x0200, 0x0207).rw("pc_joy", FUNC(pc_joy_device::joy_port_r), FUNC(pc_joy_device::joy_port_w));
	map(0x03f2, 0x03f3).w(this, FUNC(asst128_state::asst128_fdc_dor_w));
	map(0x03f4, 0x03f5).m("fdc:upd765", FUNC(upd765a_device::map));
}

static void asst128_floppies(device_slot_interface &device)
{
	device.option_add("525ssqd", FLOPPY_525_SSQD);
}

FLOPPY_FORMATS_MEMBER( asst128_state::asst128_formats )
	FLOPPY_ASST128_FORMAT
FLOPPY_FORMATS_END

static DEVICE_INPUT_DEFAULTS_START( asst128 )
	DEVICE_INPUT_DEFAULTS("DSW0", 0x30, 0x20)
DEVICE_INPUT_DEFAULTS_END

MACHINE_CONFIG_START(asst128_state::asst128)
	MCFG_DEVICE_ADD("maincpu", I8086, 4772720)
	MCFG_DEVICE_PROGRAM_MAP(asst128_map)
	MCFG_DEVICE_IO_MAP(asst128_io)
	MCFG_DEVICE_IRQ_ACKNOWLEDGE_DEVICE("mb:pic8259", pic8259_device, inta_cb)

	MCFG_DEVICE_ADD("mb", ASST128_MOTHERBOARD, 0)
	downcast<asst128_mb_device &>(*device).set_cputag("maincpu");
	MCFG_DEVICE_INPUT_DEFAULTS(asst128)

	MCFG_DEVICE_MODIFY("mb:cassette")
	MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED)

	// FIXME: determine ISA bus clock
	MCFG_DEVICE_ADD("board0", ISA8_SLOT, 0, "mb:isa", pc_isa8_cards, "cga_mc1502", true)
	MCFG_DEVICE_ADD("board1", ISA8_SLOT, 0, "mb:isa", pc_isa8_cards, "lpt", true)

	MCFG_PC_KBDC_SLOT_ADD("mb:pc_kbdc", "kbd", pc_xt_keyboards, STR_KBD_IBM_PC_XT_83)

	MCFG_PC_FDC_XT_ADD("fdc")
	MCFG_PC_FDC_INTRQ_CALLBACK(WRITELINE("mb:pic8259", pic8259_device, ir6_w))
	MCFG_FLOPPY_DRIVE_ADD("fdc:0", asst128_floppies, "525ssqd", asst128_state::asst128_formats)
	MCFG_FLOPPY_DRIVE_ADD("fdc:1", asst128_floppies, "525ssqd", asst128_state::asst128_formats)

	MCFG_PC_JOY_ADD("pc_joy")

	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("512K")
	MCFG_RAM_EXTRA_OPTIONS("64K, 128K, 256K")
MACHINE_CONFIG_END

ROM_START( asst128 )
	ROM_REGION16_LE(0x10000,"bios", 0)
	ROM_LOAD( "extbios.bin",      0x4000, 0x2000, CRC(e3bf22de) SHA1(d4319edc82c0015ca0adc6c8771e887659717e62))
	ROM_LOAD( "basic.bin",        0x6000, 0x8000, CRC(a4ec66f6) SHA1(80e934986022681ccde180e92aa108e716c4f19b))
	ROM_LOAD( "mainbios.bin",     0xe000, 0x2000, CRC(8426cbf5) SHA1(41d14137ffa651977041da22aa8071c0f7854158))

	// XXX needs dumping
	ROM_REGION(0x2000,"gfx1", ROMREGION_ERASE00)
	ROM_LOAD( "asst128cg.bin", 0, 0x2000, NO_DUMP )
ROM_END

//    YEAR  NAME     PARENT   COMPAT  MACHINE  INPUT  CLASS          INIT        COMPANY      FULLNAME         FLAGS
COMP( 198?, asst128, ibm5150, 0,      asst128, 0,     asst128_state, empty_init, "Schetmash", "Assistent 128", MACHINE_NOT_WORKING)