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r8640 Tuesday 27th July, 2010 at 16:00:45 UTC by Dirk Best
[UPD765] Improved ready handling when pin is not connected

[src/mess/machine]

upd765.c

src/mess/machine/upd765.c

r8639	r8640
236	236	fdc->FDC_main &= ~0x080;
237	237	}
238	238
	239	static int upd765_get_rdy(running_device *device)
	240	{
	241	upd765_t *fdc = get_safe_token(device);
	242
	243	if (fdc->rdy_pin == UPD765_RDY_PIN_CONNECTED)
	244	{
	245	running_device *img = current_image(device);
	246	return floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY);
	247	}
	248	else
	249	return 1;
	250	}
	251
239	252	static void upd765_seek_complete(running_device *device)
240	253	{
241	254	/* tested on Amstrad CPC */
r8639	r8640
299	312	fdc->upd765_status[0] = 0x20;
300	313
301	314	/* drive ready? */
302		if (img != NULL && floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
	315	if (img != NULL && upd765_get_rdy(device))
303	316	{
304	317	/* recalibrate? */
305	318	if (fdc->upd765_flags & UPD765_SEEK_OPERATION_IS_RECALIBRATE)
r8639	r8640
496	509	fdc->ncn = 0;
497	510
498	511	/* if drive is already at track 0, or drive is not ready */
499		if (img == NULL || floppy_tk00_r(img) == CLEAR_LINE ||
500		(!floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
501		)
	512	if (img == NULL || floppy_tk00_r(img) == CLEAR_LINE || (!upd765_get_rdy(device)))
502	513	{
503	514	/* seek completed */
504	515	//          upd765_seek_complete(device);
r8639	r8640
551	562	signed_tracks = fdc->ncn - fdc->pcn[fdc->drive];
552	563
553	564	/* if no tracks to seek, or drive is not ready, seek is complete */
554		if (img == NULL || (signed_tracks==0) || (!floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY)))
	565	if (img == NULL || (signed_tracks==0) || (!upd765_get_rdy(device)))
555	566	{
556	567	upd765_seek_complete(device);
557	568	}
r8639	r8640
960	971	upd765_t *fdc = get_safe_token(device);
961	972	running_device *img = current_image(device);
962	973
963		if (!(floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY)))
	974	if (!upd765_get_rdy(device))
964	975	{
965	976	fdc->upd765_status[0] = 0x0c0 | (1<<4) | fdc->drive | (fdc->side<<2);
966	977	fdc->upd765_status[1] = 0x00;
r8639	r8640
1152	1163	static void upd765_write_data(running_device *device)
1153	1164	{
1154	1165	upd765_t *fdc = get_safe_token(device);
1155		if (!(floppy_drive_get_flag_state(current_image(device), FLOPPY_DRIVE_READY)))
	1166	if (!upd765_get_rdy(device))
1156	1167	{
1157	1168	fdc->upd765_status[0] = 0x0c0 | (1<<4) | fdc->drive | (fdc->side<<2);
1158	1169	fdc->upd765_status[1] = 0x00;
r8639	r8640
1879	1890	fdc->upd765_status[3] |= !floppy_tk00_r(img) << 4;
1880	1891	fdc->upd765_status[3] |= !floppy_wpt_r(img) << 6;
1881	1892
1882		if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
	1893	if (upd765_get_rdy(device))
1883	1894	{
1884	1895	fdc->upd765_status[3] |= 0x20;
1885	1896	}
r8639	r8640
1909	1920	fdc->upd765_status[2] = 0;
1910	1921
1911	1922	/* drive ready? */
1912		if (floppy_drive_get_flag_state(img, FLOPPY_DRIVE_READY))
	1923	if (upd765_get_rdy(device))
1913	1924	{
1914	1925	/* is disk inserted? */
1915	1926	device_image_interface *image = dynamic_cast<device_image_interface *>( img);

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