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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#include "jasmin.h"
#include "formats/oric_dsk.h"
const device_type JASMIN = &device_creator<jasmin_device>;
ROM_START( jasmin )
ROM_REGION( 0x800, "jasmin", 0 )
ROM_LOAD("jasmin.rom", 0, 0x800, CRC(37220e89) SHA1(70e59b8abd67092f050462abc6cb5271e4c15f01) )
ROM_END
FLOPPY_FORMATS_MEMBER( jasmin_device::floppy_formats )
FLOPPY_ORIC_DSK_FORMAT
FLOPPY_FORMATS_END
static SLOT_INTERFACE_START( jasmin_floppies )
SLOT_INTERFACE( "3dsdd", FLOPPY_3_DSDD )
SLOT_INTERFACE_END
static MACHINE_CONFIG_FRAGMENT( jasmin )
MCFG_WD1770_ADD("fdc", XTAL_8MHz)
MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(oricext_device, irq_w))
MCFG_FLOPPY_DRIVE_ADD("fdc:0", jasmin_floppies, "3dsdd", jasmin_device::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", jasmin_floppies, nullptr, jasmin_device::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:2", jasmin_floppies, nullptr, jasmin_device::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:3", jasmin_floppies, nullptr, jasmin_device::floppy_formats)
MACHINE_CONFIG_END
INPUT_PORTS_START( jasmin )
PORT_START("JASMIN")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Boot") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_CHANGED_MEMBER(DEVICE_SELF, jasmin_device, boot_pressed, nullptr)
INPUT_PORTS_END
DEVICE_ADDRESS_MAP_START(map, 8, jasmin_device)
AM_RANGE(0x3f4, 0x3f7) AM_DEVREADWRITE("fdc", wd1770_t, read, write)
AM_RANGE(0x3f8, 0x3f8) AM_WRITE(side_sel_w)
AM_RANGE(0x3f9, 0x3f9) AM_WRITE(fdc_reset_w)
AM_RANGE(0x3fa, 0x3fa) AM_WRITE(ram_access_w)
AM_RANGE(0x3fb, 0x3fb) AM_WRITE(rom_access_w)
AM_RANGE(0x3fc, 0x3ff) AM_WRITE(select_w)
ADDRESS_MAP_END
jasmin_device::jasmin_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
oricext_device(mconfig, JASMIN, "Jasmin floppy drive interface", tag, owner, clock, "jasmin", __FILE__),
fdc(*this, "fdc"), side_sel(false), fdc_reset(false), ram_access(false), rom_access(false), jasmin_rom(nullptr), cur_floppy(nullptr)
{
}
jasmin_device::~jasmin_device()
{
}
void jasmin_device::device_start()
{
oricext_device::device_start();
jasmin_rom = device().machine().root_device().memregion(this->subtag("jasmin").c_str())->base();
cpu->space(AS_PROGRAM).install_device(0x0000, 0xffff, *this, &jasmin_device::map);
for(int i=0; i<4; i++) {
char name[32];
sprintf(name, "fdc:%d", i);
floppies[i] = subdevice<floppy_connector>(name)->get_device();
}
}
void jasmin_device::device_reset()
{
side_sel = fdc_reset = ram_access = rom_access = false;
select[0] = select[1] = select[2] = select[3] = false;
remap();
cur_floppy = nullptr;
fdc->set_floppy(nullptr);
}
const rom_entry *jasmin_device::device_rom_region() const
{
return ROM_NAME( jasmin );
}
machine_config_constructor jasmin_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( jasmin );
}
ioport_constructor jasmin_device::device_input_ports() const
{
return INPUT_PORTS_NAME( jasmin );
}
void jasmin_device::remap()
{
if(rom_access) {
if(ram_access) {
bank_c000_r->set_base(ram+0xc000);
bank_e000_r->set_base(ram+0xe000);
bank_f800_r->set_base(jasmin_rom);
bank_c000_w->set_base(ram+0xc000);
bank_e000_w->set_base(ram+0xe000);
bank_f800_w->set_base(junk_write);
} else {
bank_c000_r->set_base(junk_read);
bank_e000_r->set_base(junk_read);
bank_f800_r->set_base(jasmin_rom);
bank_c000_w->set_base(junk_write);
bank_e000_w->set_base(junk_write);
bank_f800_w->set_base(junk_write);
}
} else {
if(ram_access) {
bank_c000_r->set_base(ram+0xc000);
bank_e000_r->set_base(ram+0xe000);
bank_f800_r->set_base(ram+0xf800);
bank_c000_w->set_base(ram+0xc000);
bank_e000_w->set_base(ram+0xe000);
bank_f800_w->set_base(ram+0xf800);
} else {
bank_c000_r->set_base(rom+0x0000);
bank_e000_r->set_base(rom+0x2000);
bank_f800_r->set_base(rom+0x3800);
bank_c000_w->set_base(junk_write);
bank_e000_w->set_base(junk_write);
bank_f800_w->set_base(junk_write);
}
}
}
INPUT_CHANGED_MEMBER(jasmin_device::boot_pressed)
{
if(newval) {
rom_access = true;
remap();
cpu->reset();
}
}
WRITE8_MEMBER(jasmin_device::side_sel_w)
{
side_sel = data & 1;
if(cur_floppy)
cur_floppy->ss_w(side_sel);
}
WRITE8_MEMBER(jasmin_device::fdc_reset_w)
{
if((data & 1) != fdc_reset)
fdc->soft_reset();
fdc_reset = data & 1;
}
WRITE8_MEMBER(jasmin_device::ram_access_w)
{
ram_access = data & 1;
remap();
}
WRITE8_MEMBER(jasmin_device::rom_access_w)
{
rom_access = data & 1;
remap();
}
WRITE8_MEMBER(jasmin_device::select_w)
{
select[offset] = data & 1;
cur_floppy = nullptr;
for(int i=0; i != 4; i++)
if(select[i]) {
cur_floppy = floppies[i];
break;
}
fdc->set_floppy(cur_floppy);
}
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