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(MESS) wd1772: Improved interrupts, added ready handling and FD1793 variant. [Curt Coder]

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(MESS) bw2: Fixed floppy drive select. (nw)
(MESS) v1050: Refactored to use modern floppy system. (nw)
This commit is contained in:
Curt Coder 2012-11-23 15:11:35 +00:00
parent 09af8ed452
commit 70dc15b685
6 changed files with 233 additions and 136 deletions
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6
src/emu/machine/ctronics.h
View File

@ -63,8 +63,10 @@ public:
centronics_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~centronics_device();
DECLARE_WRITE8_MEMBER( write ) { if (m_dev) m_dev->write(data); }
DECLARE_READ8_MEMBER( read ) { return (m_dev) ? m_dev->read() : 0x00; }
void write(UINT8 data) { if (m_dev) m_dev->write(data); }
DECLARE_WRITE8_MEMBER( write ) { write(data); }
UINT8 read() { return (m_dev) ? m_dev->read() : 0x00; }
DECLARE_READ8_MEMBER( read ) { return read(); }
/* access to the individual bits */
DECLARE_WRITE_LINE_MEMBER( d0_w ) { if (m_dev) m_dev->set_line(0, state); }

4
src/mess/drivers/bw2.c
View File

@ -409,8 +409,8 @@ WRITE8_MEMBER( bw2_state::ppi_pa_w )
// drive select
m_floppy = NULL;
if (BIT(data, 4)) m_floppy = m_floppy0->get_device();
if (BIT(data, 5)) m_floppy = m_floppy1->get_device();
if (!BIT(data, 4)) m_floppy = m_floppy0->get_device();
if (!BIT(data, 5)) m_floppy = m_floppy1->get_device();
m_fdc->set_floppy(m_floppy);
if (m_floppy) m_floppy->mon_w(m_mtron);

85
src/mess/drivers/v1050.c
View File

@ -463,7 +463,7 @@ static ADDRESS_MAP_START( v1050_io, AS_IO, 8, v1050_state )
AM_RANGE(0x8c, 0x8c) AM_DEVREADWRITE(I8251A_SIO_TAG, i8251_device, data_r, data_w)
AM_RANGE(0x8d, 0x8d) AM_DEVREADWRITE(I8251A_SIO_TAG, i8251_device, status_r, control_w)
AM_RANGE(0x90, 0x93) AM_DEVREADWRITE(I8255A_MISC_TAG, i8255_device, read, write)
AM_RANGE(0x94, 0x97) AM_DEVREADWRITE_LEGACY(MB8877_TAG, wd17xx_r, wd17xx_w)
AM_RANGE(0x94, 0x97) AM_DEVREADWRITE(MB8877_TAG, fd1793_t, read, write)
AM_RANGE(0x9c, 0x9f) AM_DEVREADWRITE(I8255A_RTC_TAG, i8255_device, read, write)
AM_RANGE(0xa0, 0xa0) AM_READWRITE(vint_clr_r, vint_clr_w)
AM_RANGE(0xb0, 0xb0) AM_READWRITE(dint_clr_r, dint_clr_w)
@ -697,31 +697,29 @@ WRITE8_MEMBER( v1050_state::misc_ppi_pa_w )
*/
int f_motor_on = !BIT(data, 6);
// floppy drive select
if (!BIT(data, 0)) wd17xx_set_drive(m_fdc, 0);
if (!BIT(data, 1)) wd17xx_set_drive(m_fdc, 1);
if (!BIT(data, 2)) wd17xx_set_drive(m_fdc, 2);
if (!BIT(data, 3)) wd17xx_set_drive(m_fdc, 3);
floppy_image_device *floppy = NULL;
if (!BIT(data, 0)) floppy = m_floppy0->get_device();
if (!BIT(data, 1)) floppy = m_floppy1->get_device();
if (!BIT(data, 2)) floppy = m_floppy2->get_device();
if (!BIT(data, 3)) floppy = m_floppy3->get_device();
m_fdc->set_floppy(floppy);
// floppy side select
wd17xx_set_side(m_fdc, BIT(data, 4));
if (floppy) floppy->ss_w(BIT(data, 4));
// floppy motor
floppy_mon_w(m_floppy0, BIT(data, 6));
floppy_mon_w(m_floppy1, BIT(data, 6));
floppy_drive_set_ready_state(m_floppy0, f_motor_on, 1);
floppy_drive_set_ready_state(m_floppy1, f_motor_on, 1);
if (floppy) floppy->mon_w(BIT(data, 6));
// density select
wd17xx_dden_w(m_fdc, BIT(data, 7));
m_fdc->dden_w(BIT(data, 7));
}
WRITE8_MEMBER(v1050_state::misc_ppi_pb_w)
{
centronics_device *centronics = machine().device<centronics_device>(CENTRONICS_TAG);
centronics->write( machine().driver_data()->generic_space() , 0, ~data & 0xff);
m_centronics->write(~data & 0xff);
}
READ8_MEMBER(v1050_state::misc_ppi_pc_r)
@ -742,9 +740,9 @@ READ8_MEMBER(v1050_state::misc_ppi_pc_r)
*/
UINT8 data = 0;
centronics_device *centronics = machine().device<centronics_device>(CENTRONICS_TAG);
data |= centronics->not_busy_r() << 4;
data |= centronics->pe_r() << 5;
data |= m_centronics->not_busy_r() << 4;
data |= m_centronics->pe_r() << 5;
return data;
}
@ -922,14 +920,14 @@ WRITE_LINE_MEMBER( v1050_state::sio_rxrdy_w )
{
m_rxrdy = state;
set_interrupt(INT_RS_232, m_rxrdy | m_txrdy);
set_interrupt(INT_RS_232, m_rxrdy || m_txrdy);
}
WRITE_LINE_MEMBER( v1050_state::sio_txrdy_w )
{
m_txrdy = state;
set_interrupt(INT_RS_232, m_rxrdy | m_txrdy);
set_interrupt(INT_RS_232, m_rxrdy || m_txrdy);
}
static const i8251_interface sio_8251_intf =
@ -947,11 +945,15 @@ static const i8251_interface sio_8251_intf =
// MB8877 Interface
WRITE_LINE_MEMBER( v1050_state::fdc_intrq_w )
static SLOT_INTERFACE_START( v1050_floppies )
SLOT_INTERFACE( "525dd", FLOPPY_525_DD ) // Teac FD-55F
SLOT_INTERFACE_END
void v1050_state::fdc_intrq_w(bool state)
{
if (m_f_int_enb)
{
set_interrupt(INT_FLOPPY, state);
set_interrupt(INT_FLOPPY, state ? 1 : 0);
}
else
{
@ -959,11 +961,11 @@ WRITE_LINE_MEMBER( v1050_state::fdc_intrq_w )
}
}
WRITE_LINE_MEMBER( v1050_state::fdc_drq_w )
void v1050_state::fdc_drq_w(bool state)
{
if (m_f_int_enb)
{
m_maincpu->set_input_line(INPUT_LINE_NMI, state);
m_maincpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE);
}
else
{
@ -971,14 +973,7 @@ WRITE_LINE_MEMBER( v1050_state::fdc_drq_w )
}
}
static const wd17xx_interface fdc_intf =
{
DEVCB_NULL,
DEVCB_DRIVER_LINE_MEMBER(v1050_state, fdc_intrq_w),
DEVCB_DRIVER_LINE_MEMBER(v1050_state, fdc_drq_w),
{ FLOPPY_0, FLOPPY_1, NULL, NULL }
};
/*
static LEGACY_FLOPPY_OPTIONS_START( v1050 )
LEGACY_FLOPPY_OPTION( v1050, "dsk", "Visual 1050 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
HEADS([1])
@ -987,20 +982,7 @@ static LEGACY_FLOPPY_OPTIONS_START( v1050 )
SECTOR_LENGTH([512])
FIRST_SECTOR_ID([1]))
LEGACY_FLOPPY_OPTIONS_END
static const floppy_interface v1050_floppy_interface =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
FLOPPY_STANDARD_5_25_DSHD,
LEGACY_FLOPPY_OPTIONS_NAME(v1050),
"floppy_5_25",
NULL
};
*/
// Machine Initialization
@ -1021,6 +1003,10 @@ void v1050_state::machine_start()
{
address_space &program = m_maincpu->space(AS_PROGRAM);
// floppy callbacks
m_fdc->setup_intrq_cb(fd1793_t::line_cb(FUNC(v1050_state::fdc_intrq_w), this));
m_fdc->setup_drq_cb(fd1793_t::line_cb(FUNC(v1050_state::fdc_drq_w), this));
// initialize I8214
m_pic->etlg_w(1);
m_pic->inte_w(1);
@ -1103,8 +1089,11 @@ static MACHINE_CONFIG_START( v1050, v1050_state )
MCFG_I8255A_ADD(I8255A_M6502_TAG, m6502_ppi_intf)
MCFG_I8251_ADD(I8251A_KB_TAG, /*XTAL_16MHz/8,*/ kb_8251_intf)
MCFG_I8251_ADD(I8251A_SIO_TAG, /*XTAL_16MHz/8,*/ sio_8251_intf)
MCFG_MB8877_ADD(MB8877_TAG, /*XTAL_16MHz/16,*/ fdc_intf )
MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(v1050_floppy_interface)
MCFG_FD1793x_ADD(MB8877_TAG, XTAL_16MHz/16)
MCFG_FLOPPY_DRIVE_ADD(MB8877_TAG":0", v1050_floppies, "525dd", NULL, floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD(MB8877_TAG":1", v1050_floppies, "525dd", NULL, floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD(MB8877_TAG":2", v1050_floppies, NULL, NULL, floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD(MB8877_TAG":3", v1050_floppies, NULL, NULL, floppy_image_device::default_floppy_formats)
MCFG_TIMER_DRIVER_ADD_PERIODIC(TIMER_KB_TAG, v1050_state, kb_8251_tick, attotime::from_hz((double)XTAL_16MHz/4/13/8))
MCFG_TIMER_DRIVER_ADD(TIMER_SIO_TAG, v1050_state, sio_8251_tick)

26
src/mess/includes/v1050.h
View File

@ -17,7 +17,7 @@
#include "machine/ram.h"
#include "machine/scsicb.h"
#include "machine/v1050kb.h"
#include "machine/wd17xx.h"
#include "machine/wd1772.h"
#include "video/mc6845.h"
#define SCREEN_TAG "screen"
@ -69,14 +69,16 @@ public:
m_crtc(*this, H46505_TAG),
m_centronics(*this, CENTRONICS_TAG),
m_ram(*this, RAM_TAG),
m_floppy0(*this, FLOPPY_0),
m_floppy1(*this, FLOPPY_1),
m_floppy0(*this, MB8877_TAG":0"),
m_floppy1(*this, MB8877_TAG":1"),
m_floppy2(*this, MB8877_TAG":2"),
m_floppy3(*this, MB8877_TAG":3"),
m_timer_sio(*this, TIMER_SIO_TAG),
m_timer_ack(*this, TIMER_ACK_TAG),
m_timer_rst(*this, TIMER_RST_TAG),
m_sasibus(*this, SASIBUS_TAG ":host")
,
m_video_ram(*this, "video_ram"){ }
m_sasibus(*this, SASIBUS_TAG ":host"),
m_video_ram(*this, "video_ram")
{ }
required_device<cpu_device> m_maincpu;
required_device<cpu_device> m_subcpu;
@ -84,12 +86,14 @@ public:
required_device<msm58321_device> m_rtc;
required_device<i8251_device> m_uart_kb;
required_device<i8251_device> m_uart_sio;
required_device<device_t> m_fdc;
required_device<fd1793_t> m_fdc;
required_device<mc6845_device> m_crtc;
required_device<centronics_device> m_centronics;
required_device<ram_device> m_ram;
required_device<device_t> m_floppy0;
required_device<device_t> m_floppy1;
required_device<floppy_connector> m_floppy0;
required_device<floppy_connector> m_floppy1;
required_device<floppy_connector> m_floppy2;
required_device<floppy_connector> m_floppy3;
required_device<timer_device> m_timer_sio;
required_device<timer_device> m_timer_ack;
required_device<timer_device> m_timer_rst;
@ -121,8 +125,8 @@ public:
DECLARE_WRITE_LINE_MEMBER( kb_rxrdy_w );
DECLARE_WRITE_LINE_MEMBER( sio_rxrdy_w );
DECLARE_WRITE_LINE_MEMBER( sio_txrdy_w );
DECLARE_WRITE_LINE_MEMBER( fdc_intrq_w );
DECLARE_WRITE_LINE_MEMBER( fdc_drq_w );
void fdc_intrq_w(bool state);
void fdc_drq_w(bool state);
DECLARE_READ8_MEMBER( attr_r );
DECLARE_WRITE8_MEMBER( attr_w );
DECLARE_READ8_MEMBER( videoram_r );

173
src/mess/machine/wd1772.c
View File

@ -40,6 +40,7 @@ const device_type WD1772x = &device_creator<wd1772_t>;
const device_type WD1773x = &device_creator<wd1773_t>;
const device_type WD2793x = &device_creator<wd2793_t>;
const device_type WD2797x = &device_creator<wd2797_t>;
const device_type FD1793x = &device_creator<fd1793_t>;
wd177x_t::wd177x_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, type, name, tag, owner, clock)
@ -61,6 +62,7 @@ void wd177x_t::device_start()
save_item(NAME(sub_state));
save_item(NAME(track));
save_item(NAME(sector));
save_item(NAME(intrq_cond));
save_item(NAME(cmd_buffer));
save_item(NAME(track_buffer));
save_item(NAME(sector_buffer));
@ -85,6 +87,7 @@ void wd177x_t::device_reset()
last_dir = 1;
intrq = false;
drq = false;
hld = false;
live_abort();
}
@ -117,6 +120,16 @@ void wd177x_t::setup_drq_cb(line_cb cb)
drq_cb = cb;
}
void wd177x_t::setup_hld_cb(line_cb cb)
{
hld_cb = cb;
}
void wd177x_t::setup_enp_cb(line_cb cb)
{
enp_cb = cb;
}
void wd177x_t::dden_w(bool _dden)
{
dden = _dden;
@ -163,6 +176,13 @@ void wd177x_t::seek_start(int state)
{
main_state = state;
status = (status & ~(S_CRC|S_RNF|S_SPIN)) | S_BUSY;
if(has_head_load()) {
// TODO get value from HLT callback
if (command & 8)
status |= S_HLD;
else
status &= ~S_HLD;
}
sub_state = has_motor() ? SPINUP : SPINUP_DONE;
status_type_1 = true;
seek_continue();
@ -295,7 +315,7 @@ bool wd177x_t::sector_matches() const
{
if(cur_live.idbuf[0] != track || cur_live.idbuf[2] != sector)
return false;
if(!has_side_check())
if(!has_side_check() || (command & 2))
return true;
if(command & 8)
return cur_live.idbuf[1] & 1;
@ -303,8 +323,16 @@ bool wd177x_t::sector_matches() const
return !(cur_live.idbuf[1] & 1);
}
bool wd177x_t::is_ready()
{
return (floppy && !floppy->ready_r());
}
void wd177x_t::read_sector_start()
{
if(has_ready() && !is_ready())
command_end();
main_state = READ_SECTOR;
status = (status & ~(S_CRC|S_LOST|S_RNF|S_WP|S_DDM)) | S_BUSY;
drop_drq();
@ -359,6 +387,7 @@ void wd177x_t::read_sector_continue()
live_start(SEARCH_ADDRESS_MARK_HEADER);
return;
}
// TODO WD2795/7 alternate sector size
sector_size = 128 << (cur_live.idbuf[3] & 3);
sub_state = SECTOR_READ;
live_start(SEARCH_ADDRESS_MARK_DATA);
@ -391,6 +420,9 @@ void wd177x_t::read_sector_continue()
void wd177x_t::read_track_start()
{
if(has_ready() && !is_ready())
command_end();
main_state = READ_TRACK;
status = (status & ~(S_LOST|S_RNF)) | S_BUSY;
drop_drq();
@ -455,6 +487,9 @@ void wd177x_t::read_track_continue()
void wd177x_t::read_id_start()
{
if(has_ready() && !is_ready())
command_end();
main_state = READ_ID;
status = (status & ~(S_WP|S_DDM|S_LOST|S_RNF)) | S_BUSY;
drop_drq();
@ -517,6 +552,9 @@ void wd177x_t::read_id_continue()
void wd177x_t::write_track_start()
{
if(has_ready() && !is_ready())
command_end();
main_state = WRITE_TRACK;
status = (status & ~(S_WP|S_DDM|S_LOST|S_RNF)) | S_BUSY;
drop_drq();
@ -596,6 +634,9 @@ void wd177x_t::write_track_continue()
void wd177x_t::write_sector_start()
{
if(has_ready() && !is_ready())
command_end();
main_state = WRITE_SECTOR;
status = (status & ~(S_CRC|S_LOST|S_RNF|S_WP|S_DDM)) | S_BUSY;
drop_drq();
@ -650,6 +691,7 @@ void wd177x_t::write_sector_continue()
live_start(SEARCH_ADDRESS_MARK_HEADER);
return;
}
// TODO WD2795/7 alternate sector size
sector_size = 128 << (cur_live.idbuf[3] & 3);
sub_state = SECTOR_WRITE;
live_start(WRITE_SECTOR_PRE);
@ -686,12 +728,20 @@ void wd177x_t::interrupt_start()
drop_drq();
motor_timeout = 0;
}
if(command & 0x08) {
if(!(command & 0x0f)) {
intrq_cond = 0;
} else {
intrq_cond = (intrq_cond & I_IMM) | (command & 0x07);
}
if(intrq_cond & I_IMM) {
intrq = true;
if(!intrq_cb.isnull())
intrq_cb(intrq);
}
if(command & 0x07) {
if(command & 0x03) {
logerror("%s: unhandled interrupt generation (%02x)\n", ttsn().cstr(), command);
}
}
@ -791,7 +841,9 @@ void wd177x_t::do_cmd_w()
void wd177x_t::cmd_w(UINT8 val)
{
if(intrq && ((command & 0xf8) != 0xd8)) {
logerror("wd1772 cmd: %02x\n", val);
if(intrq && !(intrq_cond & I_IMM)) {
intrq = false;
if(!intrq_cb.isnull())
intrq_cb(intrq);
@ -808,22 +860,12 @@ void wd177x_t::cmd_w(UINT8 val)
UINT8 wd177x_t::status_r()
{
if(intrq && ((command & 0xf8) != 0xd8)) {
if(intrq && !(intrq_cond & I_IMM)) {
intrq = false;
if(!intrq_cb.isnull())
intrq_cb(intrq);
}
if(status_type_1) {
status &= ~(S_TR00|S_WP);
if(floppy) {
if(floppy->wpt_r())
status |= S_WP;
if(!floppy->trk00_r())
status |= S_TR00;
}
}
if(main_state == IDLE || status_type_1) {
if(floppy && floppy->idx_r())
status |= S_IP;
@ -836,6 +878,23 @@ UINT8 wd177x_t::status_r()
status &= ~S_DRQ;
}
if(status_type_1) {
status &= ~(S_TR00|S_WP);
if(floppy) {
if(floppy->wpt_r())
status |= S_WP;
if(!floppy->trk00_r())
status |= S_TR00;
}
}
if(has_ready()) {
if(!is_ready())
status |= S_NRDY;
else
status &= ~S_NRDY;
}
return status;
}
@ -943,6 +1002,12 @@ void wd177x_t::index_callback(floppy_image_device *floppy, int state)
return;
}
if(intrq_cond & I_IDX) {
intrq = true;
if(!intrq_cb.isnull())
intrq_cb(intrq);
}
switch(sub_state) {
case IDLE:
if(has_motor()) {
@ -1018,6 +1083,21 @@ bool wd177x_t::drq_r()
return drq;
}
bool wd177x_t::hld_r()
{
return hld;
}
void wd177x_t::hlt_w(bool state)
{
hlt = state;
}
bool wd177x_t::enp_r()
{
return enp;
}
void wd177x_t::live_start(int state)
{
cur_live.tm = machine().time();
@ -1747,6 +1827,16 @@ int wd177x_t::settle_time() const
return 240000;
}
bool wd177x_t::has_ready() const
{
return false;
}
bool wd177x_t::has_head_load() const
{
return false;
}
bool wd177x_t::has_side_check() const
{
return false;
@ -1757,24 +1847,24 @@ bool wd177x_t::has_side_select() const
return false;
}
bool wd177x_t::has_sector_length_select() const
{
return false;
}
bool wd177x_t::has_precompensation() const
{
return false;
}
wd1770_t::wd1770_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : wd177x_t(mconfig, WD1770x, "WD1770", tag, owner, clock)
{
}
bool wd1770_t::has_motor() const
{
return true;
}
wd1772_t::wd1772_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : wd177x_t(mconfig, WD1772x, "WD1772", tag, owner, clock)
{
}
bool wd1772_t::has_motor() const
{
return true;
}
int wd1772_t::step_time(int mode) const
{
const static int step_times[4] = { 48000, 96000, 16000, 24000 };
@ -1790,45 +1880,14 @@ wd1773_t::wd1773_t(const machine_config &mconfig, const char *tag, device_t *own
{
}
bool wd1773_t::has_motor() const
{
return false;
}
bool wd1773_t::has_side_check() const
{
return false;
}
wd2793_t::wd2793_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : wd177x_t(mconfig, WD2793x, "WD2793", tag, owner, clock)
{
}
bool wd2793_t::has_motor() const
{
return false;
}
bool wd2793_t::has_side_check() const
{
return true;
}
wd2797_t::wd2797_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : wd177x_t(mconfig, WD2797x, "WD2797", tag, owner, clock)
{
}
bool wd2797_t::has_motor() const
fd1793_t::fd1793_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : wd177x_t(mconfig, FD1793x, "FD1793", tag, owner, clock)
{
return false;
}
bool wd2797_t::has_side_check() const
{
return false;
}
bool wd2797_t::has_side_select() const
{
return true;
}

75
src/mess/machine/wd1772.h
View File

@ -19,6 +19,9 @@
#define MCFG_WD2797x_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, WD2797x, _clock)
#define MCFG_FD1793x_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, FD1793x, _clock)
class wd177x_t : public device_t {
public:
typedef delegate<void (bool state)> line_cb;
@ -29,6 +32,8 @@ public:
void set_floppy(floppy_image_device *floppy);
void setup_intrq_cb(line_cb cb);
void setup_drq_cb(line_cb cb);
void setup_hld_cb(line_cb cb);
void setup_enp_cb(line_cb cb);
void cmd_w(UINT8 val);
UINT8 status_r();
@ -52,21 +57,29 @@ public:
void gen_w(int reg, UINT8 val);
UINT8 gen_r(int reg);
DECLARE_READ8_MEMBER( read ) { return gen_r(offset);}
DECLARE_WRITE8_MEMBER( write ) { gen_w(offset,data); }
bool intrq_r();
bool drq_r();
DECLARE_READ8_MEMBER( read ) { return gen_r(offset);}
DECLARE_WRITE8_MEMBER( write ) { gen_w(offset,data); }
bool hld_r();
void hlt_w(bool state);
bool enp_r();
protected:
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual bool has_ready() const;
virtual bool has_motor() const = 0;
virtual bool has_head_load() const;
virtual bool has_side_check() const;
virtual bool has_side_select() const;
virtual bool has_sector_length_select() const;
virtual bool has_precompensation() const;
virtual int step_time(int mode) const;
virtual int settle_time() const;
@ -223,19 +236,29 @@ private:
S_LOST = 0x04,
S_CRC = 0x08,
S_RNF = 0x10,
S_SPIN = 0x20,
S_HLD = 0x20,
S_SPIN = 0x20, // WD1770, WD1772
S_DDM = 0x20,
S_WF = 0x20, // WD1773
S_WP = 0x40,
S_MON = 0x80
S_NRDY = 0x80,
S_MON = 0x80 // WD1770, WD1772
};
enum {
I_RDY = 0x01,
I_NRDY = 0x02,
I_IDX = 0x04,
I_IMM = 0x08
};
floppy_image_device *floppy;
emu_timer *t_gen, *t_cmd, *t_track, *t_sector;
bool dden, status_type_1, intrq, drq;
bool dden, status_type_1, intrq, drq, hld, hlt, enp;
int main_state, sub_state;
UINT8 command, track, sector, data, status;
UINT8 command, track, sector, data, status, intrq_cond;
int last_dir;
int counter, motor_timeout, sector_size;
@ -243,7 +266,7 @@ private:
int cmd_buffer, track_buffer, sector_buffer;
live_info cur_live, checkpoint_live;
line_cb intrq_cb, drq_cb;
line_cb intrq_cb, drq_cb, hld_cb, enp_cb;
static astring tts(attotime t);
astring ttsn();
@ -284,6 +307,7 @@ private:
void spinup();
void index_callback(floppy_image_device *floppy, int state);
bool sector_matches() const;
bool is_ready();
void live_start(int live_state);
void live_abort();
@ -307,7 +331,8 @@ public:
wd1770_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_motor() const;
virtual bool has_motor() const { return true; }
virtual bool has_precompensation() const { return true; }
};
class wd1772_t : public wd177x_t {
@ -315,7 +340,8 @@ public:
wd1772_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_motor() const;
virtual bool has_motor() const { return true; }
virtual bool has_precompensation() const { return true; }
virtual int step_time(int mode) const;
virtual int settle_time() const;
};
@ -325,8 +351,9 @@ public:
wd1773_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_motor() const;
virtual bool has_side_check() const;
virtual bool has_motor() const { return false; }
virtual bool has_head_load() const { return true; }
virtual bool has_side_check() const { return true; }
};
class wd2793_t : public wd177x_t {
@ -334,8 +361,10 @@ public:
wd2793_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_motor() const;
virtual bool has_side_check() const;
virtual bool has_ready() const { return true; }
virtual bool has_motor() const { return false; }
virtual bool has_head_load() const { return true; }
virtual bool has_side_check() const { return true; }
};
class wd2797_t : public wd177x_t {
@ -343,9 +372,22 @@ public:
wd2797_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_motor() const;
virtual bool has_side_check() const;
virtual bool has_side_select() const;
virtual bool has_ready() const { return true; }
virtual bool has_motor() const { return false; }
virtual bool has_head_load() const { return true; }
virtual bool has_side_select() const { return true; }
virtual bool has_sector_length_select() const { return true; }
};
class fd1793_t : public wd177x_t {
public:
fd1793_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
virtual bool has_ready() const { return true; }
virtual bool has_motor() const { return false; }
virtual bool has_head_load() const { return true; }
virtual bool has_side_check() const { return true; }
};
extern const device_type WD1770x;
@ -353,5 +395,6 @@ extern const device_type WD1772x;
extern const device_type WD1773x;
extern const device_type WD2793x;
extern const device_type WD2797x;
extern const device_type FD1793x;
#endif