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r5076 Thursday 25th June, 2009 at 07:21:19 UTC by Curt Coder
[BW12] Fixed floppy access. [NEC765] Added null check to sense drive status command.

[src/mess/drivers]	bw12.c
[src/mess/machine]	nec765.c

src/mess/machine/nec765.c

r5075	r5076
1847	1847
1848	1848	fdc->nec765_status[3] = fdc->drive | (fdc->side<<2);
1849	1849
1850		if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_DISK_WRITE_PROTECTED))
	1850	if (img)
1851	1851	{
1852		fdc->nec765_status[3] |= 0x40;
1853		}
	1852	if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_DISK_WRITE_PROTECTED))
	1853	{
	1854	fdc->nec765_status[3] |= 0x40;
	1855	}
1854	1856
1855		if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
1856		{
1857		fdc->nec765_status[3] |= 0x20;
1858		}
	1857	if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
	1858	{
	1859	fdc->nec765_status[3] |= 0x20;
	1860	}
1859	1861
1860		if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_HEAD_AT_TRACK_0))
1861		{
1862		fdc->nec765_status[3] |= 0x10;
	1862	if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_HEAD_AT_TRACK_0))
	1863	{
	1864	fdc->nec765_status[3] |= 0x10;
	1865	}
1863	1866	}
1864	1867
1865	1868	fdc->nec765_status[3] |= 0x08;

src/mess/drivers/bw12.c

r5075	r5076
40	40
41	41	TODO:
42	42
43		- nec765 access violation
44	43	- keyboard
	44	- floppy motor off timer
45	45
46	46	*/
47	47
r5075	r5076
88	88
89	89	floppy_drive_set_motor_state(get_floppy_image(machine, 0), 0);
90	90	floppy_drive_set_motor_state(get_floppy_image(machine, 1), 0);
91		floppy_drive_set_ready_state(get_floppy_image(machine, 0), 0, 1);
92		floppy_drive_set_ready_state(get_floppy_image(machine, 1), 0, 1);
	91	floppy_drive_set_ready_state(get_floppy_image(machine, 0), 0, 0);
	92	floppy_drive_set_ready_state(get_floppy_image(machine, 1), 0, 0);
93	93
94	94	state->motor_on = 0;
95	95	}
r5075	r5076
101	101	if (state->motor0 || state->motor1)
102	102	{
103	103	/* trigger floppy motor off NE556 timer */
104		int t = 1100 * RES_K(100) * CAP_U(4.7); // t = 1.1 * R18 * C11
	104	//      int t = 1100 * RES_K(100) * CAP_U(4.7); // t = 1.1 * R18 * C11
105	105
106		timer_adjust_oneshot(state->floppy_motor_off_timer, ATTOTIME_IN_MSEC(t), 0);
	106	//      timer_adjust_oneshot(state->floppy_motor_off_timer, ATTOTIME_IN_MSEC(t), 0);
107	107
108	108	state->motor_on = 1;
109	109	}
r5075	r5076
141	141	if (data)
142	142	{
143	143	floppy_drive_set_motor_state(get_floppy_image(machine, 0), 1);
144		floppy_drive_set_ready_state(get_floppy_image(machine, 0), 1, 1);
	144	floppy_drive_set_ready_state(get_floppy_image(machine, 0), 1, 0);
145	145	}
146	146
147	147	bw12_set_floppy_motor_off_timer(machine);
r5075	r5076
153	153	if (data)
154	154	{
155	155	floppy_drive_set_motor_state(get_floppy_image(machine, 1), 1);
156		floppy_drive_set_ready_state(get_floppy_image(machine, 1), 1, 1);
	156	floppy_drive_set_ready_state(get_floppy_image(machine, 1), 1, 0);
157	157	}
158	158
159	159	bw12_set_floppy_motor_off_timer(machine);
r5075	r5076
316	316	driver_state->fdcint = state;
317	317	}
318	318
319		static const nec765_interface bw12_nec765_interface =
	319	static NEC765_GET_IMAGE( bw12_nec765_get_image )
320	320	{
	321	switch (floppy_index)
	322	{
	323	case 1: /* drive A */
	324	return get_floppy_image(device->machine, 0);
	325
	326	case 2: /* drive B */
	327	return get_floppy_image(device->machine, 1);
	328
	329	default:
	330	return NULL;
	331	}
	332	}
	333
	334	static const struct nec765_interface bw12_nec765_interface =
	335	{
321	336	bw12_nec765_interrupt,      /* interrupt */
322	337	NULL,                  /* DMA request */
323		NULL,                  /* image lookup */
	338	bw12_nec765_get_image,      /* image lookup */
324	339	NEC765_RDY_PIN_CONNECTED   /* ready pin */
325	340	};
326	341

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