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r32243 Sunday 21st September, 2014 at 03:56:31 UTC by R. Belmont
(MESS) concept: hooked up actual 6551 for keyboard, added beeper, cleaned up driver. [R. Belmont]

[src/mess/drivers]	concept.c
[src/mess/includes]	concept.h
[src/mess/machine]	concept.c

trunk/src/mess/drivers/concept.c

r32242	r32243
201	201	/* basic machine hardware */
202	202	MCFG_CPU_ADD("maincpu", M68000, 8182000)        /* 16.364 MHz / 2 */
203	203	MCFG_CPU_PROGRAM_MAP(concept_memmap)
204		MCFG_CPU_VBLANK_INT_DRIVER("screen", concept_state,  concept_interrupt)
205	204
206	205	MCFG_QUANTUM_TIME(attotime::from_hz(60))
207	206
r32242	r32243
217	216
218	217	MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
219	218
220		/* no sound? */
	219	/* sound */
	220	MCFG_SPEAKER_STANDARD_MONO("mono")
	221	MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0)
	222	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
221	223
222	224	/* rtc */
223	225	MCFG_DEVICE_ADD("mm58274c", MM58274C, 0)
r32242	r32243
238	240	MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
239	241	MCFG_DEVICE_ADD(ACIA_1_TAG, MOS6551, 0)
240	242	MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
	243	MCFG_DEVICE_ADD(KBD_ACIA_TAG, MOS6551, 0)
	244	MCFG_MOS6551_XTAL(XTAL_1_8432MHz)
241	245
242	246	MCFG_CONCEPT_EXP_PORT_ADD("exp1", concept_exp_devices, NULL)
243	247	MCFG_CONCEPT_EXP_PORT_ADD("exp2", concept_exp_devices, "fdc")   // Flat cable Hard Disk Controller in Slot 2

trunk/src/mess/machine/concept.c

r32242	r32243
43	43	/* initialize clock interface */
44	44	m_clock_enable = FALSE /*TRUE*/;
45	45
46		/* clear keyboard interface state */
47		m_KeyQueueHead = m_KeyQueueLen = 0;
48		memset(m_KeyStateSave, 0, sizeof(m_KeyStateSave));
49
50	46	m_exp[0] = machine().device<concept_exp_port_device>("exp1");
51	47	m_exp[1] = machine().device<concept_exp_port_device>("exp2");
52	48	m_exp[2] = machine().device<concept_exp_port_device>("exp3");
53	49	m_exp[3] = machine().device<concept_exp_port_device>("exp4");
54	50
55		for (int i = 0; i < 6; i++)
56		{
57		char str[5];
58		sprintf(str, "KEY%i", i);
59		m_key[i] = ioport(str);
60		}
61
62	51	save_item(NAME(m_pending_interrupts));
63	52	save_item(NAME(m_clock_enable));
64	53	save_item(NAME(m_clock_address));
65		save_item(NAME(m_KeyQueue));
66		save_item(NAME(m_KeyQueueHead));
67		save_item(NAME(m_KeyQueueLen));
68		save_item(NAME(m_KeyStateSave));
69	54	}
70	55
71	56
r32242	r32243
110	95	m_maincpu->set_input_line_and_vector(M68K_IRQ_1, CLEAR_LINE, M68K_INT_ACK_AUTOVECTOR);
111	96	}
112	97
113		inline void concept_state::post_in_KeyQueue(int keycode)
114		{
115		//   printf("Post %x (%d) in keyqueue\n", keycode, keycode);
116		m_KeyQueue[(m_KeyQueueHead+m_KeyQueueLen) % KeyQueueSize] = keycode;
117		m_KeyQueueLen++;
118		}
119
120		void concept_state::poll_keyboard()
121		{
122		UINT32 keystate;
123		UINT32 key_transitions;
124		int i, j;
125		int keycode;
126
127		for(i = 0; (i < /*4*/3) && (m_KeyQueueLen <= (KeyQueueSize-MaxKeyMessageLen)); i++)
128		{
129		keystate = m_key[2 * i]->read() | (m_key[2 * i + 1]->read() << 16);
130		key_transitions = keystate ^ m_KeyStateSave[i];
131		if(key_transitions)
132		{
133		for(j = 0; (j < 32) && (m_KeyQueueLen <= (KeyQueueSize-MaxKeyMessageLen)); j++)
134		{
135		if((key_transitions >> j) & 1)
136		{
137		keycode = (i << 5) | j;
138
139		if (((keystate >> j) & 1))
140		{
141		/* key is pressed */
142		m_KeyStateSave[i] |= (1 << j);
143		keycode |= 0x80;
144		}
145		else
146		/* key is released */
147		m_KeyStateSave[i] &= ~ (1 << j);
148
149		post_in_KeyQueue(keycode);
150		concept_set_interrupt(KEYINT_level, 1);
151		}
152		}
153		}
154		}
155		}
156
157		INTERRUPT_GEN_MEMBER(concept_state::concept_interrupt)
158		{
159		poll_keyboard();
160		}
161
162	98	/*
163	99	VIA port A
164	100
r32242	r32243
212	148	/*
213	149	VIA CB2: used as sound output
214	150	*/
	151
215	152	WRITE_LINE_MEMBER(concept_state::via_out_cb2)
216	153	{
217	154	//   LOG(("via_out_cb2: Sound control written: data=0x%2.2x\n", state));
	155	m_speaker->level_w(state);
218	156	}
219	157
220	158	/*
r32242	r32243
273	211	{
274	212	case 0:
275	213	/* NKBP keyboard */
276		switch (offset & 0xf)
277		{
278		int reply;
	214	return m_kbdacia->read(space, (offset & 3));
279	215
280		case 0:
281		/* data */
282		reply = 0;
283
284		if (m_KeyQueueLen)
285		{
286		reply = m_KeyQueue[m_KeyQueueHead];
287		m_KeyQueueHead = (m_KeyQueueHead + 1) % KeyQueueSize;
288		m_KeyQueueLen--;
289		}
290
291		if (!m_KeyQueueLen)
292		concept_set_interrupt(KEYINT_level, 0);
293
294		return reply;
295
296		case 1:
297		/* always tell transmit is empty */
298		return m_KeyQueueLen ? 0x98 : 0x10;
299		}
300		break;
301
302	216	case 1:
303	217	/* NSR0 data comm port 0 */
304	218	return m_acia0->read(space, (offset & 3));
r32242	r32243
392	306	{
393	307	case 0:
394	308	/* NKBP keyboard */
	309	m_kbdacia->write(space, (offset & 3), data);
395	310	break;
396	311
397	312	case 1:

trunk/src/mess/includes/concept.h

r32242	r32243
15	15	#include "machine/mos6551.h"
16	16	#include "machine/mm58274c.h"   /* mm58274 seems to be compatible with mm58174 */
17	17	#include "machine/concept_exp.h"
	18	#include "sound/speaker.h"
18	19
19	20	#define ACIA_0_TAG  "acia0"
20	21	#define ACIA_1_TAG  "acia1"
	22	#define KBD_ACIA_TAG "kbacia"
	23	#define SPEAKER_TAG   "spkr"
21	24
22	25	/* keyboard interface */
23	26	enum
r32242	r32243
35	38	m_maincpu(*this, "maincpu"),
36	39	m_acia0(*this, ACIA_0_TAG),
37	40	m_acia1(*this, ACIA_1_TAG),
	41	m_kbdacia(*this, KBD_ACIA_TAG),
	42	m_speaker(*this, SPEAKER_TAG),
38	43	m_mm58274(*this,"mm58274c"),
39	44	m_videoram(*this,"videoram") { }
40	45
41	46	required_device<cpu_device> m_maincpu;
42	47	required_device<mos6551_device> m_acia0;
43	48	required_device<mos6551_device> m_acia1;
	49	required_device<mos6551_device> m_kbdacia;
	50	required_device<speaker_sound_device> m_speaker;
44	51	required_device<mm58274c_device> m_mm58274;
45	52	required_shared_ptr<UINT16> m_videoram;
46	53
47	54	concept_exp_port_device *m_exp[4];
48		ioport_port *m_key[6];
49	55
50	56	UINT8 m_pending_interrupts;
51	57	bool m_clock_enable;
52	58	UINT8 m_clock_address;
53		UINT8 m_KeyQueue[KeyQueueSize];
54		int m_KeyQueueHead;
55		int m_KeyQueueLen;
56		UINT32 m_KeyStateSave[3];
57	59	DECLARE_READ16_MEMBER(concept_io_r);
58	60	DECLARE_WRITE16_MEMBER(concept_io_w);
59	61	virtual void machine_start();
60	62	virtual void video_start();
61	63	UINT32 screen_update_concept(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
62		INTERRUPT_GEN_MEMBER(concept_interrupt);
63	64
64	65	DECLARE_READ8_MEMBER(via_in_a);
65	66	DECLARE_WRITE8_MEMBER(via_out_a);
r32242	r32243
68	69	DECLARE_WRITE_LINE_MEMBER(via_out_cb2);
69	70	DECLARE_WRITE_LINE_MEMBER(via_irq_func);
70	71	void concept_set_interrupt(int level, int state);
71		inline void post_in_KeyQueue(int keycode);
72		void poll_keyboard();
73	72	};
74	73
75	74	#endif /* CONCEPT_H_ */

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