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(MESS) Half-way modernization for TI-990, removing usage of tokens.

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Splitting driver to a video and simple terminal variant. (nw)
This commit is contained in:
Michael Zapf 2014-03-12 20:06:28 +00:00
parent b57f9d5974
commit fd38292291
4 changed files with 497 additions and 394 deletions
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218
src/mess/drivers/ti990_4.c
View File

@ -28,6 +28,7 @@
Note that only interrupt levels 3-7 are supported by the board (8-15 are not wired).
TODO:
* Split into two machines for either ASR or VDT
* finish ASR emulation
* programmer panel
* emulate other devices: card reader, printer
@ -36,17 +37,13 @@ TODO:
Rewritten by Michael Zapf 2013
*/
/*if 1, use 911 VDT; if 0, use 733 ASR */
#define VIDEO_911 0
#include "emu.h"
#include "cpu/tms9900/tms9900.h"
#if VIDEO_911
#include "video/911_vdt.h"
#include "sound/beep.h"
#else
#include "video/733_asr.h"
#endif
#include "imagedev/flopdrv.h"
#include "machine/ti99/990_dk.h"
@ -55,23 +52,26 @@ class ti990_4_state : public driver_device
{
public:
ti990_4_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) ,
m_maincpu(*this, "maincpu") { }
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_fd800(*this, "fd800") { }
device_t *m_terminal;
DECLARE_READ8_MEMBER( panel_read );
DECLARE_WRITE8_MEMBER( panel_write );
DECLARE_WRITE8_MEMBER( external_operation );
DECLARE_READ8_MEMBER( interrupt_level );
DECLARE_WRITE_LINE_MEMBER( fd_interrupt );
DECLARE_DRIVER_INIT(ti990_4);
DECLARE_DRIVER_INIT(ti990_4v);
DECLARE_MACHINE_RESET(ti990_4);
virtual void video_start();
UINT32 screen_update_ti990_4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(ti990_4_line_interrupt);
void idle_callback(int state);
required_device<tms9900_device> m_maincpu;
private:
void hold_load();
@ -87,6 +87,12 @@ private:
void set_int6(int state);
void set_int7(int state);
bool m_ckon_state;
bool m_video;
// Connected devices
required_device<tms9900_device> m_maincpu;
required_device<fd800_legacy_device> m_fd800;
};
enum
@ -96,16 +102,18 @@ enum
void ti990_4_state::hold_load()
{
m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
m_maincpu->set_input_line(INT_9900_LOAD, ASSERT_LINE);
logerror("ti990_4: Triggering LOAD interrupt\n");
m_nmi_timer->adjust(attotime::from_msec(100));
}
/*
NMI timer callback
LOAD interrupt trigger callback
*/
void ti990_4_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
m_maincpu->set_input_line(INT_9900_LOAD, CLEAR_LINE);
logerror("ti990_4: Released LOAD interrupt\n");
}
READ8_MEMBER( ti990_4_state::panel_read )
@ -131,7 +139,8 @@ void ti990_4_state::set_int_line(int line, int state)
{
m_int_level = 0;
while ((m_intlines & (1 << m_int_level))==0) m_int_level++;
m_maincpu->set_input_line(INT_9900_INTREQ, ASSERT_LINE); /* interrupt it, baby */
logerror("ti990_4: Setting int level to %x\n", m_int_level);
m_maincpu->set_input_line(INT_9900_INTREQ, ASSERT_LINE);
}
else
m_maincpu->set_input_line(INT_9900_INTREQ, CLEAR_LINE);
@ -162,63 +171,65 @@ void ti990_4_state::line_interrupt()
if (m_ckon_state) set_int_line(5, ASSERT_LINE);
}
/*
Callback from the floppy controller.
*/
WRITE_LINE_MEMBER(ti990_4_state::fd_interrupt)
{
set_int7(state);
}
INTERRUPT_GEN_MEMBER(ti990_4_state::ti990_4_line_interrupt)
{
#if VIDEO_911
vdt911_keyboard(m_terminal);
#else
asr733_keyboard(m_terminal);
#endif
if (m_video)
vdt911_keyboard(m_terminal);
else
asr733_keyboard(m_terminal);
line_interrupt();
}
#if VIDEO_911
/*
TI990/4 video emulation.
We emulate a single VDT911 CRT terminal.
*/
void ti990_vdt_int(running_machine &machine, int state)
{
// set_int3
}
static const vdt911_init_params_t vdt911_intf =
{
char_1920,
vdt911_model_US,
ti990_set_int3
ti990_vdt_int
};
void ti990_4_state::video_start()
{
m_terminal = machine().device("vdt911");
if (m_video)
m_terminal = machine().device("vdt911");
else
m_terminal = machine().device("asr733");
}
UINT32 ti990_4_state::screen_update_ti990_4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
vdt911_refresh(m_terminal, bitmap, cliprect, 0, 0);
if (m_video)
vdt911_refresh(m_terminal, bitmap, cliprect, 0, 0);
else
asr733_refresh(m_terminal, bitmap, 0, 0);
return 0;
}
#else
static const asr733_init_params_t asr733_intf =
{
// set_int6
};
void ti990_4_state::video_start()
{
m_terminal = machine().device("asr733");
}
UINT32 ti990_4_state::screen_update_ti990_4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
asr733_refresh(m_terminal, bitmap, 0, 0);
return 0;
}
#endif
WRITE8_MEMBER( ti990_4_state::external_operation )
{
static const char* extop[8] = { "inv1", "inv2", "IDLE", "RSET", "inv3", "CKON", "CKOF", "LREX" };
@ -287,21 +298,28 @@ ADDRESS_MAP_END
*/
static ADDRESS_MAP_START(cru_map, AS_IO, 8, ti990_4_state )
#if VIDEO_911
AM_RANGE(0x10, 0x11) AM_DEVREAD_LEGACY("vdt911", vdt911_cru_r)
AM_RANGE(0x80, 0x8f) AM_DEVWRITE_LEGACY("vdt911", vdt911_cru_w)
#else
AM_RANGE(0x00, 0x01) AM_DEVREAD_LEGACY("asr733", asr733_cru_r)
AM_RANGE(0x00, 0x0f) AM_DEVWRITE_LEGACY("asr733", asr733_cru_w)
#endif
AM_RANGE(0x08, 0x0b) AM_READ_LEGACY(fd800_cru_r)
AM_RANGE(0x40, 0x5f) AM_WRITE_LEGACY(fd800_cru_w)
AM_RANGE(0x08, 0x0b) AM_DEVREAD( "fd800", fd800_legacy_device, cru_r )
AM_RANGE(0x40, 0x5f) AM_DEVWRITE( "fd800", fd800_legacy_device, cru_w )
AM_RANGE(0x1fe, 0x1ff) AM_READ( panel_read )
AM_RANGE(0xff0, 0xfff) AM_WRITE( panel_write )
ADDRESS_MAP_END
static ADDRESS_MAP_START(cru_map_v, AS_IO, 8, ti990_4_state )
AM_RANGE(0x10, 0x11) AM_DEVREAD_LEGACY("vdt911", vdt911_cru_r)
AM_RANGE(0x80, 0x8f) AM_DEVWRITE_LEGACY("vdt911", vdt911_cru_w)
AM_RANGE(0x08, 0x0b) AM_DEVREAD( "fd800", fd800_legacy_device, cru_r )
AM_RANGE(0x40, 0x5f) AM_DEVWRITE( "fd800", fd800_legacy_device, cru_w )
AM_RANGE(0x1fe, 0x1ff) AM_READ( panel_read )
AM_RANGE(0xff0, 0xfff) AM_WRITE( panel_write )
ADDRESS_MAP_END
static const floppy_interface ti990_4_floppy_interface =
{
DEVCB_NULL,
@ -309,7 +327,7 @@ static const floppy_interface ti990_4_floppy_interface =
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
FLOPPY_STANDARD_5_25_DSHD,
FLOPPY_STANDARD_8_DSSD,
LEGACY_FLOPPY_OPTIONS_NAME(fd800),
NULL,
NULL
@ -331,49 +349,80 @@ MACHINE_RESET_MEMBER(ti990_4_state,ti990_4)
hold_load();
reset_int_lines();
m_ckon_state = false;
// fd800_machine_init(machine(), ti990_4_state::set_int7);
m_maincpu->set_ready(ASSERT_LINE);
}
DRIVER_INIT_MEMBER(ti990_4_state, ti990_4)
{
m_video = false;
m_nmi_timer = timer_alloc(NMI_TIMER_ID);
asr733_init(machine());
}
DRIVER_INIT_MEMBER(ti990_4_state, ti990_4v)
{
m_video = true;
m_nmi_timer = timer_alloc(NMI_TIMER_ID);
vdt911_init(machine());
}
static INPUT_PORTS_START(ti990_4)
ASR733_KEY_PORTS
INPUT_PORTS_END
static INPUT_PORTS_START(ti990_4v)
VDT911_KEY_PORTS
INPUT_PORTS_END
static MACHINE_CONFIG_START( ti990_4, ti990_4_state )
/* basic machine hardware */
/* TMS9900 CPU @ 3.0(???) MHz */
MCFG_TMS99xx_ADD("maincpu", TMS9900, 3000000, memmap, cru_map, cpuconf)
MCFG_CPU_PERIODIC_INT_DRIVER(ti990_4_state, ti990_4_line_interrupt, 120/*or TIME_IN_HZ(100) in Europe*/)
MCFG_CPU_PERIODIC_INT_DRIVER(ti990_4_state, ti990_4_line_interrupt, 120/*or TIME_IN_HZ(100) in Europe*/)
MCFG_MACHINE_RESET_OVERRIDE(ti990_4_state, ti990_4 )
/* video hardware - we emulate a single 911 vdt display */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_UPDATE_DRIVER(ti990_4_state, screen_update_ti990_4)
#if VIDEO_911
MCFG_SCREEN_SIZE(560, 280)
MCFG_SCREEN_VISIBLE_AREA(0, 560-1, 0, /*250*/280-1)
MCFG_SCREEN_PALETTE("vdt911:palette")
#else
MCFG_SCREEN_SIZE(640, 480)
MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
MCFG_SCREEN_PALETTE("asr733:palette")
#endif
#if VIDEO_911
MCFG_VDT911_VIDEO_ADD("vdt911", vdt911_intf)
#else
MCFG_ASR733_VIDEO_ADD("asr733", asr733_intf)
#endif
#if VIDEO_911
/* 911 VDT has a beep tone generator */
// Floppy controller
MCFG_FD800_ADD("fd800", WRITELINE(ti990_4_state, fd_interrupt))
MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(ti990_4_floppy_interface)
MACHINE_CONFIG_END
static MACHINE_CONFIG_START( ti990_4v, ti990_4_state )
/* basic machine hardware */
/* TMS9900 CPU @ 3.0(???) MHz */
MCFG_TMS99xx_ADD("maincpu", TMS9900, 3000000, memmap, cru_map_v, cpuconf)
MCFG_CPU_PERIODIC_INT_DRIVER(ti990_4_state, ti990_4_line_interrupt, 120/*or TIME_IN_HZ(100) in Europe*/)
MCFG_MACHINE_RESET_OVERRIDE(ti990_4_state, ti990_4 )
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_UPDATE_DRIVER(ti990_4_state, screen_update_ti990_4)
MCFG_SCREEN_SIZE(560, 280)
MCFG_SCREEN_VISIBLE_AREA(0, 560-1, 0, /*250*/280-1)
MCFG_SCREEN_PALETTE("vdt911:palette")
MCFG_VDT911_VIDEO_ADD("vdt911", vdt911_intf)
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("beeper", BEEP, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
#endif
// Floppy controller
MCFG_FD800_ADD("fd800", WRITELINE(ti990_4_state, fd_interrupt))
MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(ti990_4_floppy_interface)
MACHINE_CONFIG_END
/*
ROM loading
*/
@ -398,41 +447,22 @@ ROM_START(ti990_4)
ROMX_LOAD("94519116.u7", 0xFE01, 0x100, CRC(fa387bf3), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1))
#else
/* ROM set 945121-4(?): "Floppy disc loader with self test" (cf 945401-9701
pp. 1-19) */
/* ROM set 945121-4(?): "Floppy disc loader with self test" (cf 945401-9701 pp. 1-19) */
ROM_LOAD16_WORD("ti9904.rom", 0xFC00, 0x400, CRC(691e7d19) SHA1(58d9bed80490fdf71c743bfd3077c70840b7df8c))
#endif
#if VIDEO_911
/* VDT911 character definitions */
ROM_REGION(vdt911_chr_region_len, vdt911_chr_region, ROMREGION_ERASEFF)
#else
ROM_REGION(asr733_chr_region_len, asr733_chr_region, ROMREGION_ERASEFF)
#endif
ROM_END
DRIVER_INIT_MEMBER(ti990_4_state,ti990_4)
{
m_nmi_timer = timer_alloc(NMI_TIMER_ID);
#if VIDEO_911
vdt911_init(machine());
#else
asr733_init(machine());
#endif
}
static INPUT_PORTS_START(ti990_4)
#if VIDEO_911
VDT911_KEY_PORTS
#else
ASR733_KEY_PORTS
#endif
INPUT_PORTS_END
ROM_START(ti990_4v)
/*CPU memory space*/
ROM_REGION16_BE(0x10000, "maincpu",0)
ROM_LOAD16_WORD("ti9904.rom", 0xFC00, 0x400, CRC(691e7d19) SHA1(58d9bed80490fdf71c743bfd3077c70840b7df8c))
/* VDT911 character definitions */
ROM_REGION(vdt911_chr_region_len, vdt911_chr_region, ROMREGION_ERASEFF)
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
COMP( 1976, ti990_4, 0, 0, ti990_4, ti990_4, ti990_4_state, ti990_4, "Texas Instruments", "TI Model 990/4 Microcomputer System" , GAME_NOT_WORKING | GAME_NO_SOUND )
COMP( 1976, ti990_4, 0, 0, ti990_4, ti990_4, ti990_4_state, ti990_4, "Texas Instruments", "TI 990/4 Minicomputer System" , GAME_NOT_WORKING | GAME_NO_SOUND )
COMP( 1976, ti990_4v, ti990_4, 0, ti990_4v, ti990_4v, ti990_4_state, ti990_4v, "Texas Instruments", "TI 990/4 Minicomputer System with Video Display Terminal" , GAME_NOT_WORKING | GAME_NO_SOUND )

598
src/mess/machine/ti99/990_dk.c
View File

@ -6,6 +6,11 @@
This floppy disk controller supports IBM-format 8" SSSD and DSSD floppies.
Raphael Nabet 2003
Rewritten as class
Michael Zapf 2014
TODO: Make it work
*/
#include "emu.h"
@ -14,40 +19,6 @@
#include "imagedev/flopdrv.h"
#include "990_dk.h"
#define MAX_FLOPPIES 4
enum buf_mode_t {
bm_off, bm_read, bm_write
};
static struct
{
running_machine *machine;
UINT16 recv_buf;
UINT16 stat_reg;
UINT16 xmit_buf;
UINT16 cmd_reg;
int interrupt_f_f;
void (*interrupt_callback)(running_machine &, int state);
UINT8 buf[128];
int buf_pos;
buf_mode_t buf_mode;
int unit;
int head;
int sector;
/*int non_seq_mode;*/
int ddam;
struct
{
device_image_interface *img;
int phys_cylinder;
int log_cylinder[2];
int seclen;
} drv[MAX_FLOPPIES];
} fd800;
/* status bits */
enum
{
@ -69,64 +40,57 @@ enum
status_unit_shift = 13
};
LEGACY_FLOPPY_OPTIONS_START(fd800)
#if 1
/* SSSD 8" */
LEGACY_FLOPPY_OPTION(fd800, "dsk", "TI990 8\" SSSD disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
HEADS([1])
TRACKS([77])
SECTORS([26])
SECTOR_LENGTH([128])
FIRST_SECTOR_ID([1]))
#elif 0
/* DSSD 8" */
LEGACY_FLOPPY_OPTION(fd800, "dsk", "TI990 8\" DSSD disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
HEADS([2])
TRACKS([77])
SECTORS([26])
SECTOR_LENGTH([128])
FIRST_SECTOR_ID([1]))
#endif
LEGACY_FLOPPY_OPTIONS_END
const device_type FD800 = &device_creator<fd800_legacy_device>;
static void fd800_field_interrupt(void)
fd800_legacy_device::fd800_legacy_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, FD800, "TI FD800 Diablo floppy disk controller", tag, owner, clock, "fd800", __FILE__),
m_int_line(*this)
{
if (fd800.interrupt_callback)
(*fd800.interrupt_callback)(*fd800.machine, (fd800.stat_reg & status_interrupt) && ! fd800.interrupt_f_f);
}
static void fd800_unload_proc(device_image_interface &image)
void fd800_legacy_device::set_interrupt_line()
{
int unit = floppy_get_drive(&image.device());
fd800.drv[unit].log_cylinder[0] = fd800.drv[unit].log_cylinder[1] = -1;
if ((m_stat_reg & status_interrupt) && ! m_interrupt_f_f)
m_int_line(ASSERT_LINE);
else
m_int_line(CLEAR_LINE);
}
void fd800_machine_init(running_machine &machine, void (*interrupt_callback)(running_machine &machine, int state))
/* void fd800_legacy_device::unload_proc(device_image_interface &image)
{
int i;
int unit = floppy_get_drive(&image.device());
fd800.machine = &machine;
fd800.interrupt_callback = interrupt_callback;
fd800.stat_reg = 0;
fd800.interrupt_f_f = 1;
fd800.buf_pos = 0;
fd800.buf_mode = bm_off;
for (i=0; i<MAX_FLOPPIES; i++)
{
fd800.drv[i].img = dynamic_cast<device_image_interface *>(floppy_get_device(machine, i));
fd800.drv[i].phys_cylinder = -1;
fd800.drv[i].log_cylinder[0] = fd800.drv[i].log_cylinder[1] = -1;
fd800.drv[i].seclen = 64;
floppy_install_unload_proc(&fd800.drv[i].img->device(), fd800_unload_proc);
}
fd800_field_interrupt();
m_drv[unit].log_cylinder[0] = m_drv[unit].log_cylinder[1] = -1;
}
void fd800_machine_init(void (*interrupt_callback)(running_machine &machine, int state))
{
int i;
m_machine = &machine;
m_interrupt_callback = interrupt_callback;
m_stat_reg = 0;
m_interrupt_f_f = 1;
m_buf_pos = 0;
m_buf_mode = bm_off;
for (i=0; i<MAX_FLOPPIES; i++)
{
m_drv[i].img = dynamic_cast<device_image_interface *>(floppy_get_device(machine, i));
m_drv[i].phys_cylinder = -1;
m_drv[i].log_cylinder[0] = m_drv[i].log_cylinder[1] = -1;
m_drv[i].seclen = 64;
floppy_install_unload_proc(&m_drv[i].img->device(), unload_proc);
}
set_interrupt_line();
}
*/
/*
Read the first id field that can be found on the floppy disk.
@ -137,7 +101,7 @@ void fd800_machine_init(running_machine &machine, void (*interrupt_callback)(run
Return TRUE if an ID was found
*/
static int fd800_read_id(int unit, int head, int *cylinder_id, int *sector_id)
int fd800_legacy_device::read_id(int unit, int head, int *cylinder_id, int *sector_id)
{
/*UINT8 revolution_count;*/
chrn_id id;
@ -146,7 +110,7 @@ static int fd800_read_id(int unit, int head, int *cylinder_id, int *sector_id)
/*while (revolution_count < 2)*/
/*{*/
if (floppy_drive_get_next_id(&fd800.drv[unit].img->device(), head, &id))
if (floppy_drive_get_next_id(&m_drv[unit].img->device(), head, &id))
{
if (cylinder_id)
*cylinder_id = id.C;
@ -169,7 +133,7 @@ static int fd800_read_id(int unit, int head, int *cylinder_id, int *sector_id)
Return TRUE if the given sector ID was found
*/
static int fd800_find_sector(int unit, int head, int sector, int *data_id)
int fd800_legacy_device::find_sector(int unit, int head, int sector, int *data_id)
{
UINT8 revolution_count;
chrn_id id;
@ -178,7 +142,7 @@ static int fd800_find_sector(int unit, int head, int sector, int *data_id)
while (revolution_count < 2)
{
if (floppy_drive_get_next_id(&fd800.drv[unit].img->device(), head, &id))
if (floppy_drive_get_next_id(&m_drv[unit].img->device(), head, &id))
{
/* compare id */
if ((id.R == sector) && (id.N == 0))
@ -203,58 +167,58 @@ static int fd800_find_sector(int unit, int head, int sector, int *data_id)
Return FALSE if the seek was successful
*/
static int fd800_do_seek(int unit, int cylinder, int head)
int fd800_legacy_device::do_seek(int unit, int cylinder, int head)
{
int retries;
if (cylinder > 76)
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
return TRUE;
}
if (!fd800.drv[unit].img->exists())
if (m_drv[unit].img == NULL || !m_drv[unit].img->exists())
{
fd800.stat_reg |= status_drv_not_ready; /* right??? */
m_stat_reg |= status_drv_not_ready; /* right??? */
return TRUE;
}
if (fd800.drv[unit].log_cylinder[head] == -1)
if (m_drv[unit].log_cylinder[head] == -1)
{ /* current track ID is unknown: read it */
if (!fd800_read_id(unit, head, &fd800.drv[unit].log_cylinder[head], NULL))
if (!read_id(unit, head, &m_drv[unit].log_cylinder[head], NULL))
{
fd800.stat_reg |= status_ID_not_found;
m_stat_reg |= status_ID_not_found;
return TRUE;
}
}
/* exit if we are already at the requested track */
if (fd800.drv[unit].log_cylinder[head] == cylinder)
if (m_drv[unit].log_cylinder[head] == cylinder)
{
/*fd800.stat_reg |= status_OP_complete;*/
/*m_stat_reg |= status_OP_complete;*/
return FALSE;
}
for (retries=0; retries<10; retries++)
{ /* seek to requested track */
floppy_drive_seek(&fd800.drv[unit].img->device(), cylinder-fd800.drv[unit].log_cylinder[head]);
floppy_drive_seek(&m_drv[unit].img->device(), cylinder-m_drv[unit].log_cylinder[head]);
/* update physical track position */
if (fd800.drv[unit].phys_cylinder != -1)
fd800.drv[unit].phys_cylinder += cylinder-fd800.drv[unit].log_cylinder[head];
if (m_drv[unit].phys_cylinder != -1)
m_drv[unit].phys_cylinder += cylinder-m_drv[unit].log_cylinder[head];
/* read new track ID */
if (!fd800_read_id(unit, head, &fd800.drv[unit].log_cylinder[head], NULL))
if (!read_id(unit, head, &m_drv[unit].log_cylinder[head], NULL))
{
fd800.drv[unit].log_cylinder[head] = -1;
fd800.stat_reg |= status_ID_not_found;
m_drv[unit].log_cylinder[head] = -1;
m_stat_reg |= status_ID_not_found;
return TRUE;
}
/* exit if we have reached the requested track */
if (fd800.drv[unit].log_cylinder[head] == cylinder)
if (m_drv[unit].log_cylinder[head] == cylinder)
{
/*fd800.stat_reg |= status_OP_complete;*/
/*m_stat_reg |= status_OP_complete;*/
return FALSE;
}
}
/* track not found */
fd800.stat_reg |= status_seek_err;
m_stat_reg |= status_seek_err;
return TRUE;
}
@ -265,32 +229,32 @@ static int fd800_do_seek(int unit, int cylinder, int head)
Return FALSE if the restore was successful
*/
static int fd800_do_restore(int unit)
int fd800_legacy_device::do_restore(int unit)
{
int seek_count = 0;
int seek_complete;
if (!fd800.drv[unit].img->exists())
if (!m_drv[unit].img->exists())
{
fd800.stat_reg |= status_drv_not_ready; /* right??? */
m_stat_reg |= status_drv_not_ready; /* right??? */
return TRUE;
}
/* limit iterations to 76 to prevent an endless loop if the disc is locked */
while (!(seek_complete = !floppy_tk00_r(&fd800.drv[unit].img->device())) && (seek_count < 76))
while (!(seek_complete = !floppy_tk00_r(&m_drv[unit].img->device())) && (seek_count < 76))
{
floppy_drive_seek(&fd800.drv[unit].img->device(), -1);
floppy_drive_seek(&m_drv[unit].img->device(), -1);
seek_count++;
}
if (! seek_complete)
{
fd800.drv[unit].phys_cylinder = -1;
fd800.stat_reg |= status_seek_err;
m_drv[unit].phys_cylinder = -1;
m_stat_reg |= status_seek_err;
}
else
{
fd800.drv[unit].phys_cylinder = 0;
/*fd800.stat_reg |= status_OP_complete;*/
m_drv[unit].phys_cylinder = 0;
/*m_stat_reg |= status_OP_complete;*/
}
return ! seek_complete;
@ -299,60 +263,60 @@ static int fd800_do_restore(int unit)
/*
Perform a read operation for one sector
*/
static void fd800_do_read(void)
void fd800_legacy_device::do_read(void)
{
int data_id;
if ((fd800.sector == 0) || (fd800.sector > 26))
if ((m_sector == 0) || (m_sector > 26))
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
return;
}
if (!fd800_find_sector(fd800.unit, fd800.head, fd800.sector, &data_id))
if (!find_sector(m_unit, m_head, m_sector, &data_id))
{
fd800.stat_reg |= status_ID_not_found;
m_stat_reg |= status_ID_not_found;
return;
}
floppy_drive_read_sector_data(&fd800.drv[fd800.unit].img->device(), fd800.head, data_id, fd800.buf, 128);
fd800.buf_pos = 0;
fd800.buf_mode = bm_read;
fd800.recv_buf = (fd800.buf[fd800.buf_pos<<1] << 8) | fd800.buf[(fd800.buf_pos<<1)+1];
floppy_drive_read_sector_data(&m_drv[m_unit].img->device(), m_head, data_id, m_buf, 128);
m_buf_pos = 0;
m_buf_mode = bm_read;
m_recv_buf = (m_buf[m_buf_pos<<1] << 8) | m_buf[(m_buf_pos<<1)+1];
fd800.stat_reg |= status_XFER_ready;
fd800.stat_reg |= status_OP_complete; /* right??? */
m_stat_reg |= status_XFER_ready;
m_stat_reg |= status_OP_complete; /* right??? */
}
/*
Perform a write operation for one sector
*/
static void fd800_do_write(void)
void fd800_legacy_device::do_write(void)
{
int data_id;
if (fd800.drv[fd800.unit].seclen < 64)
if (m_drv[m_unit].seclen < 64)
/* fill with 0s */
memset(fd800.buf+(fd800.drv[fd800.unit].seclen<<1), 0, (64-fd800.drv[fd800.unit].seclen)<<1);
memset(m_buf+(m_drv[m_unit].seclen<<1), 0, (64-m_drv[m_unit].seclen)<<1);
if (!fd800_find_sector(fd800.unit, fd800.head, fd800.sector, &data_id))
if (!find_sector(m_unit, m_head, m_sector, &data_id))
{
fd800.stat_reg |= status_ID_not_found;
m_stat_reg |= status_ID_not_found;
return;
}
floppy_drive_write_sector_data(&fd800.drv[fd800.unit].img->device(), fd800.head, data_id, fd800.buf, 128, fd800.ddam);
fd800.buf_pos = 0;
fd800.buf_mode = bm_write;
floppy_drive_write_sector_data(&m_drv[m_unit].img->device(), m_head, data_id, m_buf, 128, m_ddam);
m_buf_pos = 0;
m_buf_mode = bm_write;
fd800.stat_reg |= status_XFER_ready;
fd800.stat_reg |= status_OP_complete; /* right??? */
m_stat_reg |= status_XFER_ready;
m_stat_reg |= status_OP_complete; /* right??? */
}
/*
Execute a fdc command
*/
static void fd800_do_cmd(void)
void fd800_legacy_device::do_cmd(void)
{
int unit;
int cylinder;
@ -361,43 +325,43 @@ static void fd800_do_cmd(void)
int sector;
if (fd800.buf_mode != bm_off)
if (m_buf_mode != bm_off)
{ /* All commands in the midst of read or write are interpreted as Stop */
unit = (fd800.cmd_reg >> 10) & 3;
unit = (m_cmd_reg >> 10) & 3;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
fd800.buf_pos = 0;
fd800.buf_mode = bm_off;
m_buf_pos = 0;
m_buf_mode = bm_off;
fd800.stat_reg |= status_OP_complete;
m_stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
return;
}
switch (fd800.cmd_reg >> 12)
switch (m_cmd_reg >> 12)
{
case 0: /* select
bits 16-25: 0s
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
unit = (m_cmd_reg >> 10) & 3;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if (!fd800.drv[unit].img->exists())
fd800.stat_reg |= status_drv_not_ready; /* right??? */
else if (fd800.drv[unit].img->is_readonly())
fd800.stat_reg |= status_write_prot;
if (!m_drv[unit].img->exists())
m_stat_reg |= status_drv_not_ready; /* right??? */
else if (m_drv[unit].img->is_readonly())
m_stat_reg |= status_write_prot;
else
fd800.stat_reg |= status_OP_complete;
m_stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 1: /* seek
@ -405,57 +369,57 @@ static void fd800_do_cmd(void)
bits 23-24: 0s
bits 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
cylinder = fd800.cmd_reg & 0x7f;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
cylinder = m_cmd_reg & 0x7f;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if (!fd800_do_seek(unit, cylinder, head))
fd800.stat_reg |= status_OP_complete;
if (!do_seek(unit, cylinder, head))
m_stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 2: /* restore
bits 16-25: 0s
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
unit = (m_cmd_reg >> 10) & 3;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if (!fd800_do_restore(unit))
fd800.stat_reg |= status_OP_complete;
if (!do_restore(unit))
m_stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 3: /* sector length
bits 16-22: sector word count (0-64)
bits 23-25: 0s
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
seclen = fd800.cmd_reg & 0x7f;
unit = (m_cmd_reg >> 10) & 3;
seclen = m_cmd_reg & 0x7f;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if ((seclen > 64) || (seclen == 0))
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
}
else
{
fd800.drv[unit].seclen = seclen;
fd800.stat_reg |= status_OP_complete;
m_drv[unit].seclen = seclen;
m_stat_reg |= status_OP_complete;
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 4: /* read
@ -464,47 +428,47 @@ static void fd800_do_cmd(void)
bit 24: no sequential sectoring (1=active)
bit 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
/*non_seq_mode = (fd800.cmd_reg >> 8) & 1;*/
sector = fd800.cmd_reg & 0x1f;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
/*non_seq_mode = (m_cmd_reg >> 8) & 1;*/
sector = m_cmd_reg & 0x1f;
fd800.unit = unit;
fd800.head = head;
fd800.sector = sector;
/*fd800.non_seq_mode = non_seq_mode;*/
m_unit = unit;
m_head = head;
m_sector = sector;
/*m_non_seq_mode = non_seq_mode;*/
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
fd800_do_read();
do_read();
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 5: /* read ID
bits 16-24: 0s
bit 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if (!fd800_read_id(unit, head, &cylinder, &sector))
if (!read_id(unit, head, &cylinder, &sector))
{
fd800.stat_reg |= status_ID_not_found;
m_stat_reg |= status_ID_not_found;
}
else
{
fd800.recv_buf = (cylinder << 8) | sector;
fd800.stat_reg |= status_OP_complete;
m_recv_buf = (cylinder << 8) | sector;
m_stat_reg |= status_OP_complete;
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 6: /* read unformatted
@ -520,32 +484,32 @@ static void fd800_do_cmd(void)
bits 21-24: 0s
bit 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
sector = fd800.cmd_reg & 0x1f;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
sector = m_cmd_reg & 0x1f;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if ((fd800.sector == 0) || (fd800.sector > 26))
if ((m_sector == 0) || (m_sector > 26))
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
}
else
{
fd800.unit = unit;
fd800.head = head;
fd800.sector = sector;
fd800.ddam = 0;
m_unit = unit;
m_head = head;
m_sector = sector;
m_ddam = 0;
fd800.buf_pos = 0;
fd800.buf_mode = bm_write;
fd800.stat_reg |= status_XFER_ready;
fd800.stat_reg |= status_OP_complete; /* right??? */
m_buf_pos = 0;
m_buf_mode = bm_write;
m_stat_reg |= status_XFER_ready;
m_stat_reg |= status_OP_complete; /* right??? */
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 8: /* write delete
@ -553,32 +517,32 @@ static void fd800_do_cmd(void)
bits 21-24: 0s
bit 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
sector = fd800.cmd_reg & 0x1f;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
sector = m_cmd_reg & 0x1f;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
if ((fd800.sector == 0) || (fd800.sector > 26))
if ((m_sector == 0) || (m_sector > 26))
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
}
else
{
fd800.unit = unit;
fd800.head = head;
fd800.sector = sector;
fd800.ddam = 1;
m_unit = unit;
m_head = head;
m_sector = sector;
m_ddam = 1;
fd800.buf_pos = 0;
fd800.buf_mode = bm_write;
fd800.stat_reg |= status_XFER_ready;
fd800.stat_reg |= status_OP_complete; /* right??? */
m_buf_pos = 0;
m_buf_mode = bm_write;
m_stat_reg |= status_XFER_ready;
m_stat_reg |= status_OP_complete; /* right??? */
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 9: /* format track
@ -592,49 +556,49 @@ static void fd800_do_cmd(void)
case 10: /* load int mask
bit 16: bad mask for interrupt (0 = unmask or enable interrupt)
bits 17-27: 0s */
fd800.interrupt_f_f = fd800.cmd_reg & 1;
fd800_field_interrupt();
m_interrupt_f_f = m_cmd_reg & 1;
set_interrupt_line();
break;
case 11: /* stop
bits 16-25: 0s
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
unit = (m_cmd_reg >> 10) & 3;
/* reset status */
fd800.stat_reg = unit << status_unit_shift;
m_stat_reg = unit << status_unit_shift;
fd800.stat_reg |= status_OP_complete;
m_stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 12: /* step head
bits 16-22: track number (0-76)
bits 23-25: 0s
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
cylinder = fd800.cmd_reg & 0x7f;
unit = (m_cmd_reg >> 10) & 3;
cylinder = m_cmd_reg & 0x7f;
if (cylinder > 76)
{
fd800.stat_reg |= status_invalid_cmd;
m_stat_reg |= status_invalid_cmd;
}
else if ((fd800.drv[unit].phys_cylinder != -1) || (!fd800_do_restore(unit)))
else if ((m_drv[unit].phys_cylinder != -1) || (!do_restore(unit)))
{
floppy_drive_seek(&fd800.drv[unit].img->device(), cylinder-fd800.drv[unit].phys_cylinder);
fd800.stat_reg |= status_OP_complete;
floppy_drive_seek(&m_drv[unit].img->device(), cylinder-m_drv[unit].phys_cylinder);
m_stat_reg |= status_OP_complete;
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 13: /* maintenance commands
bits 16-23: according to extended command code
bits 24-27: extended command code (0-7) */
switch ((fd800.cmd_reg >> 8) & 15)
switch ((m_cmd_reg >> 8) & 15)
{
case 0: /* reset
bits 16-23: 0s */
@ -686,29 +650,29 @@ static void fd800_do_cmd(void)
bit 24: no sequential sectoring (1=active)
bit 25: head number (1=upper)
bits 26-27: unit number (0-3) */
unit = (fd800.cmd_reg >> 10) & 3;
head = (fd800.cmd_reg >> 9) & 1;
/*non_seq_mode = (fd800.cmd_reg >> 8) & 1;*/
cylinder = fd800.cmd_reg & 0x7f;
unit = (m_cmd_reg >> 10) & 3;
head = (m_cmd_reg >> 9) & 1;
/*non_seq_mode = (m_cmd_reg >> 8) & 1;*/
cylinder = m_cmd_reg & 0x7f;
if (!fd800_do_seek(unit, cylinder, head))
if (!do_seek(unit, cylinder, head))
{
fd800.unit = unit;
fd800.head = head;
fd800.sector = 1;
/*fd800.non_seq_mode = non_seq_mode;*/
m_unit = unit;
m_head = head;
m_sector = 1;
/*m_non_seq_mode = non_seq_mode;*/
fd800_do_read();
do_read();
}
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_stat_reg |= status_interrupt;
set_interrupt_line();
break;
case 15: /* Clear Status port
bits 16-27: 0s */
fd800.stat_reg = 0;
fd800_field_interrupt();
m_stat_reg = 0;
set_interrupt_line();
break;
}
}
@ -735,7 +699,7 @@ static void fd800_do_cmd(void)
30: unit MSB
31: Interrupt (CBUSY???) (1 -> controller is ready)
*/
READ8_HANDLER(fd800_cru_r)
READ8_MEMBER( fd800_legacy_device::cru_r )
{
int reply = 0;
@ -744,13 +708,13 @@ static void fd800_do_cmd(void)
case 0:
case 1:
/* receive buffer */
reply = fd800.recv_buf >> (offset*8);
reply = m_recv_buf >> (offset*8);
break;
case 2:
case 3:
/* status register */
reply = fd800.stat_reg >> ((offset-2)*8);
reply = m_stat_reg >> ((offset-2)*8);
break;
}
@ -769,7 +733,7 @@ static void fd800_do_cmd(void)
27: FD unit number MSB/extended command code
28-31: command code
*/
WRITE8_HANDLER(fd800_cru_w)
WRITE8_MEMBER( fd800_legacy_device::cru_w )
{
switch (offset)
{
@ -791,61 +755,61 @@ WRITE8_HANDLER(fd800_cru_w)
case 15:
/* transmit buffer */
if (data)
fd800.xmit_buf |= 1 << offset;
m_xmit_buf |= 1 << offset;
else
fd800.xmit_buf &= ~(1 << offset);
m_xmit_buf &= ~(1 << offset);
if (offset == 15)
{
switch (fd800.buf_mode)
switch (m_buf_mode)
{
case bm_off:
break;
case bm_read:
fd800.buf_pos++;
if (fd800.buf_pos == fd800.drv[fd800.unit].seclen)
m_buf_pos++;
if (m_buf_pos == m_drv[m_unit].seclen)
{ /* end of sector */
if (fd800.sector == 26)
if (m_sector == 26)
{ /* end of track -> end command (right???) */
fd800.stat_reg &= ~status_XFER_ready;
fd800.stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800.buf_mode = bm_off;
fd800_field_interrupt();
m_stat_reg &= ~status_XFER_ready;
m_stat_reg |= status_OP_complete;
m_stat_reg |= status_interrupt;
m_buf_mode = bm_off;
set_interrupt_line();
}
else
{ /* read next sector */
fd800.sector++;
fd800.stat_reg &= ~status_XFER_ready | status_OP_complete | status_interrupt;
fd800_do_read();
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_sector++;
m_stat_reg &= ~status_XFER_ready | status_OP_complete | status_interrupt;
do_read();
m_stat_reg |= status_interrupt;
set_interrupt_line();
}
}
else
fd800.recv_buf = (fd800.buf[fd800.buf_pos<<1] << 8) | fd800.buf[(fd800.buf_pos<<1)+1];
m_recv_buf = (m_buf[m_buf_pos<<1] << 8) | m_buf[(m_buf_pos<<1)+1];
break;
case bm_write:
fd800.buf[fd800.buf_pos<<1] = fd800.xmit_buf >> 8;
fd800.buf[(fd800.buf_pos<<1)+1] = fd800.xmit_buf & 0xff;
fd800.buf_pos++;
if (fd800.buf_pos == fd800.drv[fd800.unit].seclen)
m_buf[m_buf_pos<<1] = m_xmit_buf >> 8;
m_buf[(m_buf_pos<<1)+1] = m_xmit_buf & 0xff;
m_buf_pos++;
if (m_buf_pos == m_drv[m_unit].seclen)
{ /* end of sector */
fd800_do_write();
if (fd800.sector == 26)
do_write();
if (m_sector == 26)
{
/* end of track -> end command (right???) */
fd800.stat_reg &= ~status_XFER_ready;
fd800.stat_reg |= status_OP_complete;
fd800.stat_reg |= status_interrupt;
fd800.buf_mode = bm_off;
fd800_field_interrupt();
m_stat_reg &= ~status_XFER_ready;
m_stat_reg |= status_OP_complete;
m_stat_reg |= status_interrupt;
m_buf_mode = bm_off;
set_interrupt_line();
}
else
{ /* increment to next sector */
fd800.sector++;
fd800.stat_reg |= status_interrupt;
fd800_field_interrupt();
m_sector++;
m_stat_reg |= status_interrupt;
set_interrupt_line();
}
}
break;
@ -871,11 +835,55 @@ WRITE8_HANDLER(fd800_cru_w)
case 31:
/* command register */
if (data)
fd800.cmd_reg |= 1 << (offset-16);
m_cmd_reg |= 1 << (offset-16);
else
fd800.cmd_reg &= ~(1 << (offset-16));
m_cmd_reg &= ~(1 << (offset-16));
if (offset == 31)
fd800_do_cmd();
do_cmd();
break;
}
}
LEGACY_FLOPPY_OPTIONS_START(fd800)
#if 1
/* SSSD 8" */
LEGACY_FLOPPY_OPTION(fd800, "dsk", "TI990 8\" SSSD disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
HEADS([1])
TRACKS([77])
SECTORS([26])
SECTOR_LENGTH([128])
FIRST_SECTOR_ID([1]))
#elif 0
/* DSSD 8" */
LEGACY_FLOPPY_OPTION(fd800, "dsk", "TI990 8\" DSSD disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
HEADS([2])
TRACKS([77])
SECTORS([26])
SECTOR_LENGTH([128])
FIRST_SECTOR_ID([1]))
#endif
LEGACY_FLOPPY_OPTIONS_END
void fd800_legacy_device::device_start(void)
{
logerror("fd800: start\n");
m_int_line.resolve();
for (int i=0; i<MAX_FLOPPIES; i++)
{
m_drv[i].img = dynamic_cast<device_image_interface *>(floppy_get_device(machine(), i));
m_drv[i].phys_cylinder = -1;
m_drv[i].log_cylinder[0] = m_drv[i].log_cylinder[1] = -1;
m_drv[i].seclen = 64;
}
}
void fd800_legacy_device::device_reset(void)
{
logerror("fd800: reset\n");
m_stat_reg = 0;
m_interrupt_f_f = 1;
m_buf_pos = 0;
m_buf_mode = bm_off;
}

70
src/mess/machine/ti99/990_dk.h
View File

@ -1,9 +1,73 @@
/*
990_dk.h: include file for 990_dk.c
*/
#ifndef __990_DK__
#define __990_DK__
extern const device_type FD800;
#define MAX_FLOPPIES 4
class fd800_legacy_device : public device_t
{
public:
fd800_legacy_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER( cru_r );
DECLARE_WRITE8_MEMBER( cru_w );
template<class _Object> static devcb2_base &static_set_int_callback(device_t &device, _Object object)
{
return downcast<fd800_legacy_device &>(device).m_int_line.set_callback(object);
}
private:
void device_start(void);
void device_reset(void);
void set_interrupt_line();
int read_id(int unit, int head, int *cylinder_id, int *sector_id);
int find_sector(int unit, int head, int sector, int *data_id);
int do_seek(int unit, int cylinder, int head);
int do_restore(int unit);
void do_read(void);
void do_write(void);
void do_cmd(void);
UINT16 m_recv_buf;
UINT16 m_stat_reg;
UINT16 m_xmit_buf;
UINT16 m_cmd_reg;
int m_interrupt_f_f;
devcb2_write_line m_int_line;
enum buf_mode_t {
bm_off, bm_read, bm_write
};
UINT8 m_buf[128];
int m_buf_pos;
buf_mode_t m_buf_mode;
int m_unit;
int m_head;
int m_sector;
/*int m_non_seq_mode;*/
int m_ddam;
struct
{
device_image_interface *img;
int phys_cylinder;
int log_cylinder[2];
int seclen;
} m_drv[MAX_FLOPPIES];
};
LEGACY_FLOPPY_OPTIONS_EXTERN(fd800);
void fd800_machine_init(running_machine &machine, void (*interrupt_callback)(running_machine &machine, int state));
#define MCFG_FD800_ADD(_tag, _intcallb) \
MCFG_DEVICE_ADD(_tag, FD800, 0) \
devcb = &fd800_legacy_device::static_set_int_callback( *device, DEVCB2_##_intcallb );
extern DECLARE_READ8_HANDLER(fd800_cru_r);
extern DECLARE_WRITE8_HANDLER(fd800_cru_w);
#endif

5
src/mess/mess.lst
View File

@ -353,7 +353,7 @@ mu100 // 1997 MU-100
mt32
cm32l
d110
sc55 // 1991 Sound Canvas SC-55
sc55 // 1991 Sound Canvas SC-55
//***************COMPUTERS**************************************************
@ -995,6 +995,7 @@ ip244415 // IP24: Indigo 2, R4400, 150MHz
// Texas Instruments
ti990_10 // 1975 TI 990/10
ti990_4 // 1976 TI 990/4
ti990_4v // 1976 TI 990/4 with video display terminal
990189 // 1978 TM 990/189
990189v // 1980 TM 990/189 with Color Video Board
@ -1939,7 +1940,7 @@ batmantv // The Batman, 2004
harriet // 1990
// Fanuc
fanucs15 // 1990
fanucs15 // 1990
//********** Misc **********************************************************