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r26417 Monday 25th November, 2013 at 17:28:46 UTC by Osso
(MESS) Updated ht68k to use the n68681 device. Also added some infos from the manual. Currently the driver works if you have a system disk inserted at boot, but not without. See MT05148.(nw)

[src/mess/drivers]

ht68k.c

trunk/src/mess/drivers/ht68k.c

r26416	r26417
1	1	/***************************************************************************
2	2
3		Hawthorne Technologies TinyGiant HT68k
	3	Hawthorne Technology TinyGiant HT68k
4	4
5	5	29/11/2009 Skeleton driver.
6	6
7		Monitor commands (most do unknown things) (must be in Uppercase)
8		B boot
9		C compare memory blocks
10		D dump memory to screen
11		E Edit memory (. to escape)
12		F
13		G
14		K
15		L
16		M
17		P
18		R
19		S
20		T
21		W
22		X (. to escape)
	7	Monitor commands (from ht68k manual) (must be in Uppercase)
	8	B Load binary file from disk.
	9	C Compare memory.
	10	D Display memory in Hex and ASCII.
	11	E Examine and/or change memory (2 bytes). (. to escape)
	12	F Fill a block of memory with a value.
	13	G Go to an address and execute program.
	14	K Peek.
	15	L Load program from serial port.
	16	M Move memory.
	17	P Poke.
	18	R Read binary file from disk.
	19	S System boot.
	20	T Test printer.
	21	W Write binary file to disk.
	22	X Examine long and/or change memory (4 bytes). (. to escape)
23	23
	24
	25	Lot of infos available at: http://www.classiccmp.org/cini/ht68k.htm
	26
24	27	****************************************************************************/
25	28
26	29	#include "emu.h"
27	30	#include "cpu/m68000/m68000.h"
28		#include "machine/68681.h"
	31	#include "machine/n68681.h"
29	32	#include "machine/wd_fdc.h"
30		#include "machine/terminal.h"
	33	#include "machine/serial.h"
31	34
32	35
33	36	class ht68k_state : public driver_device
34	37	{
35	38	public:
36	39	ht68k_state(const machine_config &mconfig, device_type type, const char *tag)
37		: driver_device(mconfig, type, tag),
	40	: driver_device(mconfig, type, tag),
38	41	m_maincpu(*this, "maincpu"),
39		m_terminal(*this, TERMINAL_TAG),
40	42	m_duart(*this, "duart68681"),
41		m_fdc(*this, "wd1770")
42		,
43		m_p_ram(*this, "p_ram"){ }
	43	m_fdc(*this, "wd1770"),
	44	m_floppy0(*this, "wd1770:0"),
	45	m_floppy1(*this, "wd1770:1"),
	46	m_floppy2(*this, "wd1770:2"),
	47	m_floppy3(*this, "wd1770:3"),
	48	m_floppy(NULL),
	49	m_p_ram(*this, "p_ram"){ }
44	50
45	51
46	52	required_device<cpu_device> m_maincpu;
47		required_device<generic_terminal_device> m_terminal;
48		required_device<duart68681_device> m_duart;
	53	required_device<duartn68681_device> m_duart;
49	54	required_device<wd1770_t> m_fdc;
50		DECLARE_WRITE8_MEMBER(kbd_put);
51		DECLARE_WRITE_LINE_MEMBER(ht68k_fdc_intrq_w);
	55	required_device<floppy_connector> m_floppy0;
	56	required_device<floppy_connector> m_floppy1;
	57	required_device<floppy_connector> m_floppy2;
	58	required_device<floppy_connector> m_floppy3;
	59	floppy_image_device *m_floppy;
	60	DECLARE_WRITE_LINE_MEMBER(duart_irq_handler);
	61	DECLARE_WRITE_LINE_MEMBER(duart_txb);
	62	DECLARE_READ8_MEMBER(duart_input);
	63	DECLARE_WRITE8_MEMBER(duart_output);
52	64	required_shared_ptr<UINT16> m_p_ram;
53	65	virtual void machine_reset();
54	66	};
r26416	r26417
60	72	//AM_RANGE(0x00080000, 0x000fffff) // Expansion
61	73	//AM_RANGE(0x00d80000, 0x00d8ffff) // Printer
62	74	AM_RANGE(0x00e00000, 0x00e00007) AM_MIRROR(0xfff8) AM_DEVREADWRITE8("wd1770", wd1770_t, read, write, 0x00ff) // FDC WD1770
63		AM_RANGE(0x00e80000, 0x00e800ff) AM_MIRROR(0xff00) AM_DEVREADWRITE8_LEGACY("duart68681", duart68681_r, duart68681_w, 0xff )
	75	AM_RANGE(0x00e80000, 0x00e800ff) AM_MIRROR(0xff00) AM_DEVREADWRITE8("duart68681", duartn68681_device, read, write, 0xff )
64	76	AM_RANGE(0x00f00000, 0x00f07fff) AM_ROM AM_MIRROR(0xf8000) AM_REGION("user1",0)
65	77	ADDRESS_MAP_END
66	78
r26416	r26417
68	80	static INPUT_PORTS_START( ht68k )
69	81	INPUT_PORTS_END
70	82
71
72	83	void ht68k_state::machine_reset()
73	84	{
74	85	UINT8* user1 = memregion("user1")->base();
r26416	r26417
76	87	memcpy((UINT8*)m_p_ram.target(),user1,0x8000);
77	88
78	89	m_maincpu->reset();
	90
	91	m_fdc->reset();
	92	m_fdc->set_floppy(NULL);
79	93	}
80	94
81		static void duart_irq_handler(device_t *device, int state, UINT8 vector)
	95	WRITE_LINE_MEMBER(ht68k_state::duart_irq_handler)
82	96	{
83		ht68k_state *drvstate = device->machine().driver_data<ht68k_state>();
84		drvstate->m_maincpu->set_input_line_and_vector(M68K_IRQ_3, state, M68K_INT_ACK_AUTOVECTOR);
	97	m_maincpu->set_input_line_and_vector(M68K_IRQ_3, state, M68K_INT_ACK_AUTOVECTOR);
85	98	}
86	99
87		static void duart_tx(device_t *device, int channel, UINT8 data)
	100	WRITE_LINE_MEMBER(ht68k_state::duart_txb)
88	101	{
89		ht68k_state *state = device->machine().driver_data<ht68k_state>();
90		state->m_terminal->write(device->machine().driver_data()->generic_space(), 0, data);
	102	//This is the second serial channel named AUX, for modem or other serial devices.
91	103	}
92	104
93		static UINT8 duart_input(device_t *device)
	105	READ8_MEMBER(ht68k_state::duart_input)
94	106	{
95	107	return 0;
96	108	}
97	109
98		static void duart_output(device_t *device, UINT8 data)
	110	WRITE8_MEMBER(ht68k_state::duart_output)
99	111	{
100		ht68k_state *state = device->machine().driver_data<ht68k_state>();
	112	m_floppy = NULL;
101	113
102		static const char *names[] = { "wd1770:0", "wd1770:1", "wd1770:2", "wd1770:3" };
103		floppy_image_device *floppy = 0;
104		for(int i=0; i<4; i++) {
105		if(BIT(data, 7-i)==0) {
106		floppy_connector *con = device->machine().device<floppy_connector>(names[i]);
107		if(con)
108		floppy = con->get_device();
109		break;
110		}
111		}
112		if (floppy) floppy->ss_w(BIT(data,3) ? 0 : 1);
113		state->m_fdc->set_floppy(floppy);
114		}
	114	if ((BIT(data, 7)) == 0) { m_floppy = m_floppy0->get_device(); }
	115	if ((BIT(data, 6)) == 0) { m_floppy = m_floppy1->get_device(); }
	116	if ((BIT(data, 5)) == 0) { m_floppy = m_floppy2->get_device(); }
	117	if ((BIT(data, 4)) == 0) { m_floppy = m_floppy3->get_device(); }
115	118
116		WRITE8_MEMBER( ht68k_state::kbd_put )
117		{
118		duart68681_rx_data(m_duart, 0, data);
	119	m_fdc->set_floppy(m_floppy);
	120
	121	if (m_floppy) {m_floppy->ss_w(BIT(data,3) ? 0 : 1);}
119	122	}
120	123
121		static GENERIC_TERMINAL_INTERFACE( terminal_intf )
	124	static const rs232_port_interface rs232_intf =
122	125	{
123		DEVCB_DRIVER_MEMBER(ht68k_state, kbd_put)
	126	DEVCB_DEVICE_LINE_MEMBER("duart68681", duartn68681_device, rx_a_w),
	127	DEVCB_NULL,
	128	DEVCB_NULL,
	129	DEVCB_NULL,
	130	DEVCB_NULL
124	131	};
125	132
126		static const duart68681_config ht68k_duart68681_config =
	133	static const duartn68681_config ht68k_duart68681_config =
127	134	{
128		duart_irq_handler,
129		duart_tx,
130		duart_input,
131		duart_output
	135	DEVCB_DRIVER_LINE_MEMBER(ht68k_state, duart_irq_handler),
	136	DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx), //serial channel CON (console, for terminal, 9600 baud)
	137	DEVCB_DRIVER_LINE_MEMBER(ht68k_state, duart_txb), // serial channel AUX (auxiliary, for modem or other serial device, 1200 baud)
	138	DEVCB_DRIVER_MEMBER(ht68k_state, duart_input),
	139	DEVCB_DRIVER_MEMBER(ht68k_state, duart_output)
132	140	};
133	141
134	142	static SLOT_INTERFACE_START( ht68k_floppies )
r26416	r26417
140	148	/* basic machine hardware */
141	149	MCFG_CPU_ADD("maincpu",M68000, XTAL_8MHz)
142	150	MCFG_CPU_PROGRAM_MAP(ht68k_mem)
	151	MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, "serial_terminal")
143	152
144
145	153	/* video hardware */
146		MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
	154	MCFG_DUARTN68681_ADD( "duart68681", XTAL_8MHz / 2, ht68k_duart68681_config )
147	155
148		MCFG_DUART68681_ADD( "duart68681", XTAL_8MHz / 2, ht68k_duart68681_config )
149
150	156	MCFG_WD1770x_ADD("wd1770", XTAL_8MHz )
151	157
152	158	MCFG_FLOPPY_DRIVE_ADD("wd1770:0", ht68k_floppies, "525dd", floppy_image_device::default_floppy_formats)
r26416	r26417
165	171	/* Driver */
166	172
167	173	/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT    INIT    COMPANY                     FULLNAME                    FLAGS */
168		COMP( 1987, ht68k,  0,       0,      ht68k,     ht68k, driver_device,   0,   "Hawthorne Technologies", "TinyGiant HT68k", GAME_NO_SOUND)
	174	COMP( 1987, ht68k,  0,       0,      ht68k,     ht68k, driver_device,   0,   "Hawthorne Technology", "TinyGiant HT68k", GAME_NO_SOUND)

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