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r5089 Friday 26th June, 2009 at 17:11:17 UTC by Curt Coder
[KB3600] Implemented any key down output.

[src/mess/machine]

kb3600.c kb3600.h

src/mess/machine/kb3600.c

r5088	r5089
12	12	TODO:
13	13
14	14	- more accurate emulation of real chip
15		- any key down
16	15
17	16	*/
18	17
r5088	r5089
26	25	typedef struct _ay3600_t ay3600_t;
27	26	struct _ay3600_t
28	27	{
29		devcb_resolved_write_line   out_data_ready_func;
30
31	28	devcb_resolved_read_line   in_shift_func;
32	29	devcb_resolved_read_line   in_control_func;
33	30
	31	devcb_resolved_write_line   out_data_ready_func;
	32	devcb_resolved_write_line   out_ako_func;
	33
34	34	int b;                  /* output buffer */
	35	int ako;               /* any key down */
35	36
36	37	/* timers */
37	38	emu_timer *scan_timer;      /* keyboard scan timer */
r5088	r5089
71	72	const ay3600_interface *intf = get_interface(device);
72	73
73	74	int x, y;
74		int akd = 0;
	75	int ako = 0;
75	76
76	77	for (x = 0; x < 9; x++)
77	78	{
r5088	r5089
83	84	{
84	85	int b = (x * 10) + y;
85	86
86		akd = 1;
	87	ako = 1;
87	88
88	89	if (b > 63)
89	90	{
r5088	r5089
105	106	}
106	107	}
107	108
108		if (!akd)
	109	if (!ako)
109	110	{
110	111	ay3600->b = -1;
111	112	}
	113
	114	if (ako != ay3600->ako)
	115	{
	116	devcb_call_write_line(&ay3600->out_ako_func, ako);
	117	ay3600->ako = ako;
	118	}
112	119	}
113	120
114	121	/*-------------------------------------------------
r5088	r5089
136	143	const ay3600_interface *intf = get_interface(device);
137	144
138	145	/* resolve callbacks */
139		devcb_resolve_write_line(&ay3600->out_data_ready_func, &intf->out_data_ready_func, device);
140	146	devcb_resolve_read_line(&ay3600->in_shift_func, &intf->in_shift_func, device);
141	147	devcb_resolve_read_line(&ay3600->in_control_func, &intf->in_control_func, device);
	148	devcb_resolve_write_line(&ay3600->out_data_ready_func, &intf->out_data_ready_func, device);
	149	devcb_resolve_write_line(&ay3600->out_ako_func, &intf->out_ako_func, device);
142	150
143	151	/* create the timers */
144	152	ay3600->scan_timer = timer_alloc(device->machine, ay3600_scan_tick, (void *)device);
r5088	r5089
146	154
147	155	/* register for state saving */
148	156	state_save_register_device_item(device, 0, ay3600->b);
	157	state_save_register_device_item(device, 0, ay3600->ako);
149	158	}
150	159
151	160	/*-------------------------------------------------

src/mess/machine/kb3600.h

r5088	r5089
41	41	B2   10 |  AY-5-3600    | 31  X4
42	42	B1   11 |   PRO 002    | 30  X3
43	43	X8   12 |          | 29  X2
44		AKD   13 |          | 28  X1
	44	AKO   13 |          | 28  X1
45	45	CTRL   14 |          | 27  X0
46	46	SHIFT   15 |          | 26  Y9
47	47	DATA READY   16 |          | 25  Y8
r5088	r5089
88	88	/* this gets called for every change of the DATA READY pin */
89	89	devcb_write_line   out_data_ready_func;
90	90
91		/* this gets called for every change of the AKD pin */
92		devcb_write_line   out_akd_func;
	91	/* this gets called for every change of the AKO pin */
	92	devcb_write_line   out_ako_func;
93	93	};
94	94
95	95	/***************************************************************************

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