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r20429 Thursday 24th January, 2013 at 09:04:02 UTC by Jonathan Gevaryahu
(MESS) cat.c (Canon Cat): Reverse engineered 99% of memory map including mirrors based on extensive hardware testing; Located Printer, Modem and Floppy drive registers (not yet hooked up); Added v1.74 firmware and SpellCheck ROMs. Added a lot of debugging information. [Lord Nightmare, Balrog]

[src/mess/drivers]

cat.c

trunk/src/mess/drivers/cat.c

r20428	r20429
1	1	/***************************************************************************
2	2
3		Canon Cat driver by Miodrag Milanovic
	3	Canon Cat driver by Miodrag Milanovic and Lord Nightmare
4	4
5	5	12/06/2009 Skeleton driver.
6	6	15/06/2009 Working driver
r20428	r20429
21	21	- Then press USE FRONT and the SHIFT keys together and tap the space bar. Note that the cursor
22	22	stops blinking. Now a Pressing the RETURN key gets the Forth OK and you are 'in' as they say.
23	23
	24	In MESS, to activate it as above:
	25	* when the Cat boots, type (without quotes) "Enable Forth Language"
	26	* hold left-alt(leap left) and type E n a, release left-alt (the left cursor is now at the first character)
	27	* simultaneously press both alt keys for a moment and release both (the whole "Enable Forth Language" line will be selected)
	28	* press either Ctri(use front) key and press backspace(Erase) (If beeping actually worked the cat would beep here)
	29	* press ctrl(use front), shift, and space (the cursor should stop blinking)
	30	* press enter and the forth "ok" prompt should appear. you can type 'page' and enter to clear the screen
24	31
	32	Canon Cat:
	33	<insert guru-diagram here once drawn>
	34	Crystals:
	35	X1: 19.968Mhz, used by GA2 (plus a PLL to multiply by 2?), and divide by 4 for cpuclk, divide by 8 for 2.5mhz and divide by 5.5 for 3.63mhz (is this suposed to be divide by 6? there may not be a pll if it is...)
	36	X2: 3.579545Mhz, used by the DTMF generator chip AMI S2579 at IC40
	37	X3: 2.4576Mhz, used by the modem chip AMI S35213 at IC37
	38
	39
	40
25	41	ToDo:
26		- Floppy drive (3.5", 256kb)
27		- Beeper/speaker
28		- Swyft - figure out the keyboard
	42	* Canon Cat
	43	- Find the mirrors for the write-only video control register and figure out what the writes actually do
	44	- The 2.40 (bios 0) firmware gets annoyed and thinks it has a phone call at random
	45	(hit ctrl to make it shut up for a bit or go into forth mode);
	46	The 1.74 (bios 1) firmware doesn't have this issue.
	47	Figure out what causes it and make it stop.
	48	- Floppy drive (3.5", Single Sided Double Density MFM, ~400kb)
	49	* Cat has very low level control of data being read or written, much like the Amiga does
	50	* first sector is id ZERO which is unusual since most formats are base 1 for sectors
	51	* sectors are 512 bytes, standard MFM with usual address and data marks and ccitt crc16
	52	* track 0 contains sector zero repeated identically 10 times; the cat SEEMS to use this as a disk/document ID
	53	* tracks 1-79 contain sectors  0x0 thru 0x9 ('normal' mfm parlance: sectors -1, 0, 1, ... 7, 8)
	54	* this means the whole disk effectively contains 512*10*80 = 409600 bytes of data, though track 0 is just a disk "number" identifier for the cat meaning 404480 usable bytes
	55	* (Once this is done I'd declare the system working)
	56	- Beeper/speaker; this is connected to the DUART 'user output' pin OP3 and probably depends on an accurate implementation of the duart counters/timers
29	57	- Centronics port
30		- RS232C port
	58	- RS232C port and Modem "port" connected to the DUART's two ports
	59	- DTMF generator chip (connected to DUART ports OP4,5,6,7)
	60	- 6ms timer at 0x83xxxx
	61	- Watchdog timer/powerfail at 0x85xxxx
	62	- Canon Cat released versions known: 1.74 (dumped), 2.40 (dumped), 2.42 (NEED DUMP)
31	63
	64	* Swyft
	65	- Figure out the keyboard (unlike the cat interrupts are involved? or maybe an NMI on a timer/vblank?)
	66	- Communications ports (Duart? or some other plain UART?)
	67	- Floppy (probably similar to the Cat)
	68	- Centronics port (probably similar to the Cat)
	69	- Multple undumped firmware revisions exist
	70
32	71	****************************************************************************/
33	72
	73	// Defines
	74
	75	#undef DEBUG_VIDEO_STATUS_W
	76	#undef DEBUG_VIDEO_CONTROL_W
	77
	78	#undef DEBUG_FLOPPY_CONTROL_W
	79	#undef DEBUG_FLOPPY_CONTROL_R
	80	#undef DEBUG_FLOPPY_DATA_W
	81	#undef DEBUG_FLOPPY_DATA_R
	82	#undef DEBUG_FLOPPY_STATUS_R
	83
	84	#undef DEBUG_PRINTER_DATA_W
	85	#undef DEBUG_PRINTER_CONTROL_W
	86
	87	#undef DEBUG_MODEM_R
	88	#undef DEBUG_MODEM_W
	89
	90	#undef DEBUG_DUART_OUTPUT_LINES
	91
	92	#undef DEBUG_TEST_W
	93
	94	// Includes
34	95	#include "emu.h"
35	96	#include "cpu/m68000/m68000.h"
36	97	#include "machine/68681.h"
r20428	r20429
40	101	{
41	102	public:
42	103	cat_state(const machine_config &mconfig, device_type type, const char *tag)
43		: driver_device(mconfig, type, tag) ,
	104	: driver_device(mconfig, type, tag),
44	105	m_p_sram(*this, "p_sram"),
45		m_p_videoram(*this, "p_videoram"){ }
	106	m_p_videoram(*this, "p_videoram")
	107	{ }
46	108
47	109	DECLARE_WRITE16_MEMBER(cat_video_status_w);
48	110	DECLARE_WRITE16_MEMBER(cat_test_mode_w);
49		DECLARE_READ16_MEMBER(cat_modem_r);
50		DECLARE_WRITE16_MEMBER(cat_modem_w);
51		DECLARE_READ16_MEMBER(cat_battery_r);
52		DECLARE_WRITE16_MEMBER(cat_printer_w);
53		DECLARE_READ16_MEMBER(cat_floppy_r);
54		DECLARE_WRITE16_MEMBER(cat_floppy_w);
	111	DECLARE_READ16_MEMBER(cat_s35213_r);
	112	DECLARE_WRITE16_MEMBER(cat_s35213_w);
	113	DECLARE_READ16_MEMBER(cat_floppy_control_r);
	114	DECLARE_WRITE16_MEMBER(cat_floppy_control_w);
	115	DECLARE_WRITE16_MEMBER(cat_printer_data_w);
	116	DECLARE_READ16_MEMBER(cat_floppy_data_r);
	117	DECLARE_WRITE16_MEMBER(cat_floppy_data_w);
55	118	DECLARE_READ16_MEMBER(cat_keyboard_r);
56	119	DECLARE_WRITE16_MEMBER(cat_keyboard_w);
57		DECLARE_WRITE16_MEMBER(cat_video_w);
58		DECLARE_READ16_MEMBER(cat_something_r);
	120	DECLARE_WRITE16_MEMBER(cat_video_control_w);
	121	DECLARE_READ16_MEMBER(cat_floppy_status_r);
	122	DECLARE_READ16_MEMBER(cat_battery_r);
	123	DECLARE_WRITE16_MEMBER(cat_printer_control_w);
	124	DECLARE_READ16_MEMBER(cat_2e80_r);
	125	DECLARE_READ16_MEMBER(cat_0080_r);
	126	DECLARE_READ16_MEMBER(cat_0000_r);
59	127	optional_shared_ptr<UINT16> m_p_sram;
60	128	required_shared_ptr<UINT16> m_p_videoram;
61	129	UINT8 m_duart_inp;// = 0x0e;
r20428	r20429
66	134	DECLARE_MACHINE_START(cat);
67	135	DECLARE_MACHINE_RESET(cat);
68	136	DECLARE_VIDEO_START(cat);
	137	DECLARE_DRIVER_INIT(cat);
69	138	DECLARE_MACHINE_START(swyft);
70	139	DECLARE_MACHINE_RESET(swyft);
71	140	DECLARE_VIDEO_START(swyft);
r20428	r20429
75	144	TIMER_CALLBACK_MEMBER(swyft_reset);
76	145	};
77	146
78		WRITE16_MEMBER( cat_state::cat_video_status_w )
	147	// TODO: this init doesn't actually work yet! please fix me!
	148	/*
	149	DRIVER_INIT_MEMBER( cat_state,cat )
79	150	{
80		m_video_enable = BIT( data, 3 );
81		}
	151	UINT8 *svrom = machine().root_device().memregion("svrom")->base();
	152	int i;
	153	// fill svrom with the correct 2e80 pattern except where svrom1 sits
	154	// first half
	155	for (i = 0; i < 0x20000; i+=2)
	156	svrom[i] = 0x2E;
	157	// second half
	158	for (i = 0x20000; i < 0x40000; i+=2)
	159	{
	160	svrom[i] = 0x2E;
	161	svrom[i+1] = 0x80;
	162	}
	163	}*/
82	164
83	165	WRITE16_MEMBER( cat_state::cat_test_mode_w )
84	166	{
	167	#ifdef DEBUG_TEST_W
	168	fprintf(stderr, "Test mode reg write: offset %06X, data %04X\n", 0x860000+(offset<<1), data);
	169	#endif
85	170	}
86	171
87		READ16_MEMBER( cat_state::cat_modem_r )
	172	// AMI S35213 300/1200 Single Chip Modem (datasheet found at http://bitsavers.trailing-edge.com/pdf/ami/_dataBooks/1985_AMI_MOS_Products_Catalog.pdf on pdf page 243)
	173	READ16_MEMBER( cat_state::cat_s35213_r )
88	174	{
89		return 0;
	175	#ifdef DEBUG_MODEM_R
	176	fprintf(stderr,"Read from s35213 modem address %06X\n", 0x820000+(offset<<1));
	177	#endif
	178	// HACK: return default 'sane' modem state
	179	return 0x00;
90	180	}
91	181
92		WRITE16_MEMBER( cat_state::cat_modem_w )
	182	WRITE16_MEMBER( cat_state::cat_s35213_w )
93	183	{
	184	#ifdef DEBUG_MODEM_W
	185	fprintf(stderr,"Write to s35213 modem address %06X, data %04X\n", 0x820000+(offset<<1), data);
	186	#endif
94	187	}
95	188
96		READ16_MEMBER( cat_state::cat_battery_r )
	189	/* 0x600000-0x65ffff Write: Video Generator (AKA NH4-5001 AKA Gate Array #1 @ IC30)
	190	writing to the video generator is done by putting the register number in the high 3 bits
	191	and the data to write in the lower 12 (14?) bits.
	192	The actual data-bus data written here is completely ignored,
	193	in fact it isn't even connected to the gate array; The firmware writes 0x0000.
	194	hence:
	195	0 = must be 0
	196	s = register select
	197	d = data to write
	198	? = unknown
	199	x = ignored
	200	? 1 1 ?  ? s s s  s ? ? ?  ? ? ? d  d d d d  d d d .
	201	600xxx - VSE (End of Frame)
	202	608xxx - VST (End of VSync)
	203	610xxx - VSS (VSync Start)
	204	618xxx - VDE (Active Lines) = value written * 4
	205	620xxx - unknown
	206	628xxx - unknown
	207	630xxx - unknown
	208	638xxx - unknown
	209	640xxx - HSE (End H Line)
	210	648xxx - HST (End HSync)
	211	650xxx - HSS (HSync Start)
	212	658xxx - VOC (Video Control)
	213	*/
	214	WRITE16_MEMBER( cat_state::cat_video_control_w )
97	215	{
98		/* just return that battery is full */
99		return 0x7fff;
	216	/*
	217	* 006500AE ,          ( HSS HSync Start    89 )
	218	* 006480C2 ,          ( HST End HSync   96 )
	219	* 006400CE ,          ( HSE End H Line    104 )
	220	* 006180B0 ,          ( VDE Active Lines    344 )
	221	* 006100D4 ,          ( VSS VSync Start   362 )
	222	* 006080F4 ,          ( VST End of VSync    378 )
	223	* 00600120 ,          ( VSE End of Frame    400 )
	224	* 006581C0 ,          ( VOC Video Control Normal Syncs )
	225	*/
	226	#ifdef DEBUG_VIDEO_CONTROL_W
	227	static const char *const regDest[16] = { "VSE (End of frame)", "VST (End of VSync)", "VSS (Start of VSync)", "VDE (Active Lines)", "unknown 620xxx", "unknown 628xxx", "unknown 630xxx", "unknown 638xxx", "HSE (end of horizontal line)", "HST (end of HSync)", "HSS (HSync Start)", "VOC (Video Control)", "unknown 660xxx", "unknown 668xxx", "unknown 670xxx", "unknown 678xxx" };
	228	fprintf(stderr,"Write to video chip address %06X; %02X -> register %s with data %04X\n", 0x600000+(offset<<1), offset&0xFF, regDest[(offset&0x3C000)>>14], data);
	229	#endif
100	230	}
101	231
102		WRITE16_MEMBER( cat_state::cat_printer_w )
	232	// Floppy control register (called fd.cont in the cat source code)
	233	/* FEDCBA98 (76543210 is ignored)
	234	* |||||||\-- ?always low? (may be some sort of 'reset' or debug bit? the cat code explicitly clears this bit but never sets it)
	235	* ||||||\--- WRITE GATE: 0 = write head disabled, 1 = write head enabled (verified from cat source code)
	236	* |||||\---- ?always high? (leftover debug bit? unused by cat code)
	237	* ||||\----- /DIRECTION: 1 = in, 0 = out (verified from forth cmd)
	238	* |||\------ /SIDESEL: 1 = side1, 0 = side0 (verified from forth cmd)
	239	* ||\------- STEP: 1 = STEP active, 0 = STEP inactive (verified from cat source code)
	240	* |\-------- MOTOR ON: 1 = on, 0 = off (verified)
	241	* \--------- /DRIVESELECT: 1 = drive 0, 0 = drive 1 (verified from forth cmd)
	242	*/
	243	// 0x800000-0x800001 read
	244	READ16_MEMBER( cat_state::cat_floppy_control_r )
103	245	{
104		m_pr_cont = data;
	246	#ifdef DEBUG_FLOPPY_CONTROL_R
	247	fprintf(stderr,"Read from Floppy Status address %06X\n", 0x800000+(offset<<1));
	248	#endif
	249	return 0x0480;
105	250	}
	251	// 0x800000-0x800001 write
	252	WRITE16_MEMBER( cat_state::cat_floppy_control_w )
	253	{
	254	#ifdef DEBUG_FLOPPY_CONTROL_W
	255	fprintf(stderr,"Write to Floppy Control address %06X, data %04X\n", 0x800000+(offset<<1), data);
	256	#endif
	257	}
106	258
107		READ16_MEMBER( cat_state::cat_floppy_r )
	259	// 0x800002-0x800003 read = 0x0080, see open bus
	260	// 0x800002-0x800003 write
	261	WRITE16_MEMBER( cat_state::cat_keyboard_w )
108	262	{
109		return 0;
	263	m_keyboard_line = data >> 8;
110	264	}
111	265
112		WRITE16_MEMBER( cat_state::cat_floppy_w )
	266	// 0x800004-0x800005 write = printer data
	267	WRITE16_MEMBER( cat_state::cat_printer_data_w )
113	268	{
	269	#ifdef DEBUG_PRINTER_DATA_W
	270	fprintf(stderr,"Write to Printer Data address %06X, data %04X\n", 0x800004+(offset<<1), data);
	271	#endif
114	272	}
	273	// 0x800006-0x800007: Floppy data register (called fd.dwr in the cat source code)
	274	READ16_MEMBER( cat_state::cat_floppy_data_r )
	275	{
	276	#ifdef DEBUG_FLOPPY_DATA_R
	277	fprintf(stderr,"Read from Floppy Data address %06X\n", 0x800006+(offset<<1));
	278	#endif
	279	return 0x0080;
	280	}
	281	WRITE16_MEMBER( cat_state::cat_floppy_data_w )
	282	{
	283	#ifdef DEBUG_FLOPPY_DATA_W
	284	fprintf(stderr,"Write to Floppy Data address %06X, data %04X\n", 0x800006+(offset<<1), data);
	285	#endif
	286	}
115	287
	288
	289	// 0x800008-0x800009: Floppy status register (called fd.status in the cat source code)
	290	/* FEDCBA98 (76543210 is ignored)
	291	* |||||||\-- ? always low
	292	* ||||||\--- ? always low
	293	* |||||\---- READY: 1 = ready, 0 = not ready (verified from cat source code)
	294	* ||||\----- /WRITE PROTECT: 1 = writable, 0 = protected (verified)
	295	* |||\------ /TRACK0: 0 = on track 0, 1 = not on track 0 (verified)
	296	* ||\------- /INDEX: 0 = index sensor active, 1 = index sensor inactive (verified)
	297	* |\-------- ? low on drive 1, high on drive 0?
	298	* \--------- ? usually high but occasionally low?
	299	stuff that needs to be found here:
	300	ready sense
	301	*/
	302	READ16_MEMBER( cat_state::cat_floppy_status_r )
	303	{
	304	#ifdef DEBUG_FLOPPY_STATUS_R
	305	fprintf(stderr,"Read from Floppy Status address %06X\n", 0x800008+(offset<<1));
	306	#endif
	307	return 0x0080;
	308	}
	309
	310	// 0x80000a-0x80000b
116	311	READ16_MEMBER( cat_state::cat_keyboard_r )
117	312	{
118	313	UINT16 retVal = 0;
r20428	r20429
139	334	return retVal;
140	335	}
141	336
142		WRITE16_MEMBER( cat_state::cat_keyboard_w )
	337	// 0x80000c-0x80000d (unused in cat source code; may have originally been a separate read only port where 800006 would have been write-only)
	338
	339	// 0x80000e-0x80000f read
	340	READ16_MEMBER( cat_state::cat_battery_r )
143	341	{
144		m_keyboard_line = data >> 8;
	342	/* just return that battery is full, i.e. bit 15 is 0 */
	343	/* to make the cat think the battery is bad, return 0x8080 instead of 0x0080 */
	344	// TODO: hook this to a dipswitch
	345	return 0x0080;
145	346	}
	347	// 0x80000e-0x80000f write
	348	WRITE16_MEMBER( cat_state::cat_printer_control_w )
	349	{
	350	/*
	351	* FEDCBA98 (76543210 is ignored)
	352	* |||||||\-- CC line enable (verified from cat source code)
	353	* ||||||\--- LEDE line enable (verified from cat source code)
	354	* |||||\---- ?
	355	* ||||\----- ? always seems to be written as high?
	356	* |||\------ ?
	357	* ||\------- ?
	358	* |\-------- ?
	359	* \--------- ?
	360	*/
	361	// writes of 0x0A00 turn on the keyboard LED on the LOCK key
	362	// writes of 0x0800 turn off the keyboard LED on the LOCK key
	363	#ifdef DEBUG_PRINTER_CONTROL_W
	364	fprintf(stderr,"Write to Printer Control address %06X, data %04X\n", (offset<<1)+0x80000e, data);
	365	#endif
	366	m_pr_cont = data;
	367	}
146	368
147		WRITE16_MEMBER( cat_state::cat_video_w )
	369	WRITE16_MEMBER( cat_state::cat_video_status_w )
148	370	{
149		/*
150		006500AE ,          ( HSS HSync Strart    89 )
151		006480C2 ,          ( HST End HSync   96 )
152		006400CE ,          ( HSE End H Line    104 )
153		006180B0 ,          ( VDE Active Lines    344 )
154		006100D4 ,          ( VSS VSync Start   362 )
155		006080F4 ,          ( VST End of VSync    378 )
156		00600120 ,          ( VSE End of Frame    400 )
157		006581C0 ,          ( VOC Video Control Normal Syncs )
158		*/
	371	/*
	372	* 76543210
	373	* |||||||\-- ?
	374	* ||||||\--- ?
	375	* |||||\---- Video enable (1 = video on, 0 = video off/screen black)
	376	* ||||\----- ? (always written as 1?)
	377	* |||\------ ? (always written as 1?)
	378	* ||\------- ?
	379	* |\-------- ?
	380	* \--------- ?
	381	*/
	382
	383	#ifdef DEBUG_VIDEO_STATUS_W
	384	fprintf(stderr, "Video status reg write: offset %06X, data %04X\n", 0x840000+(offset<<1), data);
	385	#endif
	386	m_video_enable = BIT( data, 2 );
159	387	}
160	388
161		READ16_MEMBER( cat_state::cat_something_r )
	389	// open bus etc handlers
	390	READ16_MEMBER( cat_state::cat_2e80_r )
162	391	{
163		return 0x00ff;
	392	return 0x2e80;
164	393	}
165	394
	395	READ16_MEMBER( cat_state::cat_0000_r )
	396	{
	397	return 0x0000;
	398	}
	399
	400	READ16_MEMBER( cat_state::cat_0080_r )
	401	{
	402	return 0x0080;
	403	}
	404
	405
	406	/* Canon cat memory map, based on a 16MB dump of the entire address space of a running unit using forth "1000000 0 do i c@ semit loop"
	407	68k address map:
	408	a23 a22 a21 a20 a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9  a8  a7  a6  a5  a4  a3  a2  a1  (a0 via UDS/LDS)
	409	0   0   *   x   x   *   *   *   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x       *GATE ARRAY 2 DECODES THESE LINES TO ENABLE THIS AREA*
	410	0   0   0   0   x   0   a   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   b       R   ROM (ab: 00=ic4 01=ic2 10=ic5 11=ic3) (EPROM 27C512 x 4) [controlled via GA2 /ROMCS]
	411	0   0   0   0   x   1   0   0   x   x   *   *   *   *   *   *   *   *   *   *   *   *   *   0       RW  SVRAM ic11 d4364 (battery backed) [controlled via GA2 /RAMCS]
	412	0   0   0   0   x   1   x   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   0       O   OPEN BUS (reads as 0x2e) [may be controlled via GA2 /RAMCS?]
	413	0   0   0   0   x   1   1   0   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   0       O   OPEN BUS (reads as 0x2e) [may be controlled via GA2 /RAMCS?]
	414	0   0   0   0   x   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   1       O   OPEN BUS (reads as 0x80) [may be controlled via GA2 /RAMCS?]
	415	0   0   0   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x       O   BUS CONFLICT (reads as random garbage, corrupted copy based on when a20 is 0, some sort of bus collision? note GA2 can't see a20 so /ROMCS and /RAMCS lines are probably active here as above)
	416	0   0   1   x   x   0   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   0       R   SVROM 2 ic7 (not present on cat as sold, open bus reads as 0x2e) [controlled via GA2 /SVCS0]
	417	0   0   1   x   x   0   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   1       R   SVROM 0 ic6 (MASK ROM tc531000) [controlled via GA2 /SVCS0]
	418	0   0   1   x   x   1   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   0       O   OPEN BUS (reads as 0x2e) [controlled via GA2 /SVCS1] *SEE BELOW*
	419	0   0   1   x   x   1   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   1       R   SVROM 1 ic8 (not present on cat as sold, open bus reads as 0x80) [controlled via GA2 /SVCS1] *SEE BELOW*
	420	*NOTE: on developer units, two 128K SRAMS are mapped in place of the two entries immediately above!* (this involves some creative wiring+sockets or an official IAI 'shadow ram board')
	421	0   1   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *       *BOTH GATE ARRAYS 1 and 2 DECODE THIS AREA; 2 DEALS WITH ADDR AND 1 WITH DATA/CAS/RAS*
	422	0   1   0   x   x   a   b   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *       RW  VIDEO/SYSTEM DRAM (ab: 00=row 0, ic26-29; 01=row 1, ic22-25; 10=row 2; ic18-21; 11=row 3; ic14-17)
	423	*NOTE: DRAM rows 2 and 3 above are only usually populated in cat developer units!*
	424	0   1   1   ?   ?   *   *   *   ?   ?   ?   ?   ?   ?   ?   *   *   *   *   *   *   *   *   x       W   VIDEO CONTRL REGISTERS (reads as 0x2e80)
	425	1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *   *   *   *   *       *GATE ARRAY 3 DECODES THIS AREA, GA3 IS ENABLED BY /IOCS1 FROM GA2*
	426	1   0   0   Y   Y   0   0   0   x   x   x   x   x   x   x   x   x   x   x   *   *   *   *   0       *IO AREA* Note byte reads in this area behave erratically if both Y bits are set while word reads work fine always
	427	x   x   x   x   1       O   OPEN BUS (reads as 0x80)
	428	0   0   0   0   0       RW  Floppy control lines (drive select, motor on, direction, step, side select, ?write gate?)
	429	0   0   0   1   0       W   Keyboard Row Select (reads as 0x00)
	430	0   0   1   0   0       W   Centronics Printer Data W (reads as 0x00)
	431	0   0   1   1   0       RW  Floppy data register
	432	0   1   0   0   0       R   Floppy status lines (write protect, ready, index, track0)
	433	0   1   0   1   0       R   Keyboard Column Read
	434	0   1   1   0   0       W?  Unknown (reads as 0x00)
	435	0   1   1   1   0       RW  Read: Battery status (MSB bit, 0 = ok, 1 = dead, other bits read as 0)/Write: Centronics Printer and Keyboard LED/Country Code Related
	436	1   x   x   x   0       W?  Unknown (reads as 0x00)
	437	1   0   0   x   x   0   0   1   x   x   x   x   x   x   x   x   x   x   x   *   *   *   *   1       RW  68681 DUART at ic34 [controlled via GA2 /DUARTCS]
	438	1   0   0   x   x   0   1   0   x   x   x   x   x   x   x   x   x   x   *   *   *   *   *   0       RW  Modem Chip AMI S35213 @ IC37 DATA BIT 7 ONLY [controlled via GA2 /SMCS]
	439	1   0   0   x   x   0   1   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *       RW  Read: Fixed 16-bit counter. increments once per frame? Write: Modem Chip?
	440	1   0   0   x   x   1   0   0   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *       W?  Video Control register? (screen enable on bit 3?) (reads as 0x2e80)
	441	1   0   0   x   x   1   0   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *       R?  reads as 0x0100 0x0101 or 0x0102, some sort of test register or video status register?
	442	1   0   0   x   x   1   1   0   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *       W?  Test register? (reads as 0x0000)
	443	1   0   0   x   x   1   1   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   *       ?   Unknown (reads as 0x2e80)
	444
	445	1   0   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x       O   OPEN BUS (reads as 0x2e80)
	446	1   1   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x   x       O   OPEN BUS (reads as 0x2e80)
	447	*/
	448
	449
166	450	static ADDRESS_MAP_START(cat_mem, AS_PROGRAM, 16, cat_state)
167	451	ADDRESS_MAP_UNMAP_HIGH
168		AM_RANGE(0x00000000, 0x0003ffff) AM_ROM // 256 KB ROM
169		AM_RANGE(0x00040000, 0x00043fff) AM_RAM AM_SHARE("p_sram") // SRAM powered by battery
170		AM_RANGE(0x00200000, 0x0027ffff) AM_ROM AM_REGION("svrom",0x0000) // SV ROM
171		AM_RANGE(0x00400000, 0x0047ffff) AM_RAM AM_SHARE("p_videoram") // 512 KB RAM
172		AM_RANGE(0x00600000, 0x0065ffff) AM_WRITE(cat_video_w) // Video chip
173		AM_RANGE(0x00800000, 0x00800001) AM_READWRITE(cat_floppy_r, cat_floppy_w)
174		AM_RANGE(0x00800002, 0x00800003) AM_WRITE(cat_keyboard_w)
175		AM_RANGE(0x00800008, 0x00800009) AM_READ(cat_something_r)
176		AM_RANGE(0x0080000a, 0x0080000b) AM_READ(cat_keyboard_r)
177		AM_RANGE(0x0080000e, 0x0080000f) AM_READWRITE(cat_battery_r,cat_printer_w)
178		AM_RANGE(0x00810000, 0x0081001f) AM_DEVREADWRITE8_LEGACY("duart68681", duart68681_r, duart68681_w, 0xff )
179		AM_RANGE(0x00820000, 0x008200ff) AM_READWRITE(cat_modem_r, cat_modem_w)// modem
180		AM_RANGE(0x00840000, 0x00840001) AM_WRITE(cat_video_status_w) // Video status
181		AM_RANGE(0x00860000, 0x00860001) AM_WRITE(cat_test_mode_w) // Test mode
	452	AM_RANGE(0x000000, 0x03ffff) AM_ROM AM_MIRROR(0x080000) // 256 KB ROM
	453	AM_RANGE(0x040000, 0x043fff) AM_RAM AM_SHARE("p_sram") AM_MIRROR(0x08C000)// SRAM powered by battery
	454	AM_RANGE(0x200000, 0x27ffff) AM_ROM AM_REGION("svrom",0x0000) AM_MIRROR(0x180000) // SV ROM
	455	AM_RANGE(0x400000, 0x47ffff) AM_RAM AM_SHARE("p_videoram") AM_MIRROR(0x180000) // 512 KB RAM
	456	AM_RANGE(0x600000, 0x67ffff) AM_READWRITE(cat_2e80_r,cat_video_control_w) AM_MIRROR(0x180000) // Gate Array #1: Video
	457	AM_RANGE(0x800000, 0x800001) AM_READWRITE(cat_floppy_control_r, cat_floppy_control_w) AM_MIRROR(0x18FFE0) // floppy control lines and readback
	458	AM_RANGE(0x800002, 0x800003) AM_READWRITE(cat_0080_r, cat_keyboard_w) AM_MIRROR(0x18FFE0) // keyboard col write
	459	AM_RANGE(0x800004, 0x800005) AM_READWRITE(cat_0080_r, cat_printer_data_w) AM_MIRROR(0x18FFE0) // Centronics Printer Data
	460	AM_RANGE(0x800006, 0x800007) AM_READWRITE(cat_floppy_data_r,cat_floppy_data_w) AM_MIRROR(0x18FFE0) // floppy data read/write
	461	AM_RANGE(0x800008, 0x800009) AM_READ(cat_floppy_status_r) AM_MIRROR(0x18FFE0) // floppy status lines
	462	AM_RANGE(0x80000a, 0x80000b) AM_READ(cat_keyboard_r) AM_MIRROR(0x18FFE0) // keyboard row read
	463	AM_RANGE(0x80000c, 0x80000d) AM_READ(cat_0080_r) AM_MIRROR(0x18FFE0) // Open bus?
	464	AM_RANGE(0x80000e, 0x80000f) AM_READWRITE(cat_battery_r,cat_printer_control_w) AM_MIRROR(0x18FFE0) // Centronics Printer Control, keyboard led and country code enable
	465	AM_RANGE(0x800010, 0x80001f) AM_READ(cat_0080_r) AM_MIRROR(0x18FFE0) // Open bus?
	466	AM_RANGE(0x810000, 0x81001f) AM_DEVREADWRITE8_LEGACY("duart68681", duart68681_r, duart68681_w, 0xff ) AM_MIRROR(0x18FFE0)
	467	AM_RANGE(0x820000, 0x82003f) AM_READWRITE(cat_s35213_r,cat_s35213_w) AM_MIRROR(0x18FFC0) // AMI S35213 Modem Chip, all access is on bit 7
	468	//AM_RANGE(0x830000, 0x830001) AM_READ(cat_6ms_counter) AM_MIRROR(0x18FFFE) // 6ms counter?
	469	AM_RANGE(0x840000, 0x840001) AM_READWRITE(cat_2e80_r,cat_video_status_w) AM_MIRROR(0x18FFFE) // Video status/Output port register
	470	//AM_RANGE(0x850000, 0x850001) AM_READ(cat_video_status) AM_MIRROR(0x18FFFE) // video status read: hblank, vblank or draw?
	471	AM_RANGE(0x860000, 0x860001) AM_READWRITE(cat_0000_r, cat_test_mode_w) AM_MIRROR(0x18FFFE) // Test mode
	472	AM_RANGE(0x870000, 0x870001) AM_READ(cat_2e80_r) AM_MIRROR(0x18FFFE) // Open bus?
	473	AM_RANGE(0xA00000, 0xA00001) AM_READ(cat_2e80_r) AM_MIRROR(0x1FFFFE) // Open bus?
	474	AM_RANGE(0xC00000, 0xC00001) AM_READ(cat_2e80_r) AM_MIRROR(0x3FFFFE) // Open bus?
182	475	ADDRESS_MAP_END
183	476
184	477	static ADDRESS_MAP_START(swyft_mem, AS_PROGRAM, 16, cat_state)
r20428	r20429
226	519
227	520	PORT_START("LINE1")
228	521	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('n') PORT_CHAR('B')
229		PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
	522	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
230	523	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
231	524	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
232	525	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
r20428	r20429
236	529
237	530	PORT_START("LINE2")
238	531	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
239		PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
	532	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
240	533	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
241	534	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
242	535	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
r20428	r20429
269	562	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
270	563	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
271	564	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
272		PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\xbd') PORT_CHAR('\xbc')
	565	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\xbd') PORT_CHAR('\xbc') //PORT_CHAR('}') PORT_CHAR('{')
273	566	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
274	567	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
275	568	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
r20428	r20429
289	582	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right Leap") PORT_CODE(KEYCODE_RALT)
290	583	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Page") PORT_CODE(KEYCODE_PGUP) PORT_CODE(KEYCODE_PGDN)
291	584	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift Lock") PORT_CODE(KEYCODE_CAPSLOCK)
292		PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE)
	585	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Erase") PORT_CODE(KEYCODE_BACKSPACE)
293	586	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
294	587	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("UNDO") PORT_CODE(KEYCODE_BACKSLASH)
295		PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\xb1') PORT_CHAR('\xb0')
	588	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\xb1') PORT_CHAR('\xb0') // PORT_CHAR('\\') PORT_CHAR('~')
296	589	INPUT_PORTS_END
297	590
298	591	static INPUT_PORTS_START( swyft )
r20428	r20429
418	711	}
419	712	}
420	713
	714	// TODO: hook to speaker and dtmf generator
	715	static void duart_output(device_t *device, UINT8 data)
	716	{
	717	#ifdef DEBUG_DUART_OUTPUT_LINES
	718	fprintf(stderr,"Duart output io lines changed to: %02X\n", data);
	719	#endif
	720	}
	721
421	722	static const duart68681_config cat_duart68681_config =
422	723	{
423	724	duart_irq_handler,
424	725	duart_tx,
425	726	duart_input,
426		NULL
	727	duart_output
427	728	};
428	729
429	730	static MACHINE_CONFIG_START( cat, cat_state )
430	731
431	732	/* basic machine hardware */
432		MCFG_CPU_ADD("maincpu",M68000, XTAL_5MHz)
	733	MCFG_CPU_ADD("maincpu",M68000, XTAL_19_968MHz/4)
433	734	MCFG_CPU_PROGRAM_MAP(cat_mem)
434	735
435	736	MCFG_MACHINE_START_OVERRIDE(cat_state,cat)
r20428	r20429
448	749
449	750	MCFG_VIDEO_START_OVERRIDE(cat_state,cat)
450	751
451		MCFG_DUART68681_ADD( "duart68681", XTAL_5MHz, cat_duart68681_config )
	752	MCFG_DUART68681_ADD( "duart68681", XTAL_19_968MHz*2/11, cat_duart68681_config ) // duart is normally clocked by 3.6864mhz xtal, but cat uses a divider from the main xtal instead which yields 3.63054545Mhz. There is a trace to cut and a mounting area to allow using an actual 3.6864mhz xtal if you so desire
452	753
453	754	MCFG_NVRAM_ADD_0FILL("nvram")
454	755	MACHINE_CONFIG_END
r20428	r20429
486	787	ROM_START( cat )
487	788	ROM_REGION( 0x40000, "maincpu", ROMREGION_ERASEFF )
488	789	// SYS ROM
489		ROM_LOAD16_BYTE( "r240l0.bin", 0x00001, 0x10000, CRC(1b89bdc4) SHA1(39c639587dc30f9d6636b46d0465f06272838432) )
490		ROM_LOAD16_BYTE( "r240h0.bin", 0x00000, 0x10000, CRC(94f89b8c) SHA1(6c336bc30636a02c625d31f3057ec86bf4d155fc) )
491		ROM_LOAD16_BYTE( "r240l1.bin", 0x20001, 0x10000, CRC(1a73be4f) SHA1(e2de2cb485f78963368fb8ceba8fb66ca56dba34) )
492		ROM_LOAD16_BYTE( "r240h1.bin", 0x20000, 0x10000, CRC(898dd9f6) SHA1(93e791dd4ed7e4afa47a04df6fdde359e41c2075) )
	790	ROM_SYSTEM_BIOS( 0, "r240", "Canon Cat V2.40 Firmware")
	791	ROMX_LOAD( "r240l0.ic2", 0x00001, 0x10000, CRC(1b89bdc4) SHA1(39c639587dc30f9d6636b46d0465f06272838432), ROM_SKIP(1) | ROM_BIOS(1))
	792	ROMX_LOAD( "r240h0.ic4", 0x00000, 0x10000, CRC(94f89b8c) SHA1(6c336bc30636a02c625d31f3057ec86bf4d155fc), ROM_SKIP(1) | ROM_BIOS(1))
	793	ROMX_LOAD( "r240l1.ic3", 0x20001, 0x10000, CRC(1a73be4f) SHA1(e2de2cb485f78963368fb8ceba8fb66ca56dba34), ROM_SKIP(1) | ROM_BIOS(1))
	794	ROMX_LOAD( "r240h1.ic5", 0x20000, 0x10000, CRC(898dd9f6) SHA1(93e791dd4ed7e4afa47a04df6fdde359e41c2075), ROM_SKIP(1) | ROM_BIOS(1))
	795	ROM_SYSTEM_BIOS( 1, "r174", "Canon Cat V1.74 Firmware")
	796	// Canon cat v1.74 roms are labeled as r74; they only added the major number to the rom label after 2.0
	797	ROMX_LOAD( "r74__0l__c18c.blue.ic2", 0x00001, 0x10000, CRC(b19aa0c8) SHA1(85b3e549cfb91bd3dd32335e02eaaf9350e80900), ROM_SKIP(1) | ROM_BIOS(2))
	798	ROMX_LOAD( "r74__0h__75a6.yellow.ic4", 0x00000, 0x10000, CRC(75281f77) SHA1(ed8b5e37713892ee83413d23c839d09e2fd2c1a9), ROM_SKIP(1) | ROM_BIOS(2))
	799	ROMX_LOAD( "r74__1l__c8a3.green.ic3", 0x20001, 0x10000, CRC(93275558) SHA1(f690077a87076fd51ae385ac5a455804cbc43c8f), ROM_SKIP(1) | ROM_BIOS(2))
	800	ROMX_LOAD( "r74__1h__3c37.white.ic5", 0x20000, 0x10000, CRC(5d7c3962) SHA1(8335993583fdd30b894c01c1a7a6aca61cd81bb4), ROM_SKIP(1) | ROM_BIOS(2))
493	801
494		ROM_REGION( 0x80000, "svrom", ROMREGION_ERASEFF )
	802	ROM_REGION( 0x80000, "svrom", ROMREGION_ERASE00 )
	803	// SPELLING VERIFICATION ROM (SVROM)
	804	// since ROM_FILL16BE(0x0, 0x80000, 0x2e80) doesn't exist, the even bytes and latter chunk of the svrom space are filled in in DRIVER_INIT
	805	// Romspace here is a little strange: there are 3 rom sockets on the board:
	806	// svrom-0 maps to 200000-21ffff every ODD byte (d8-d0)
	807	ROMX_LOAD( "uv1__nh7-0684__hn62301apc11__7h1.ic6", 0x00000, 0x20000, CRC(229CA210) SHA1(564B57647A34ACDD82159993A3990A412233DA14), ROM_SKIP(1)) // this is a 28pin tc531000 mask rom, 128KB long
	808	// svrom-1 maps to 200000-21ffff every EVEN byte (d15-d7)
	809	// no rom is in the socket; it reads as open bus 0x2E
	810	// svrom-2 maps to 240000-25ffff every ODD byte (d8-d0)
	811	// no rom is in the socket; it reads as open bus 0x80
	812	// there is no svrom-3; 240000-25ffff EVEN always reads as 0x2E
495	813	ROM_END
496	814
497	815	/* Driver */
498	816
499		/*    YEAR  NAME  PARENT  COMPAT   MACHINE    INPUT    INIT     COMPANY   FULLNAME       FLAGS */
500		COMP( 1985, swyft,0,       0,      swyft,    swyft, driver_device,    0,   "Information Applicance Inc", "Swyft", GAME_NOT_WORKING | GAME_NO_SOUND)
501		COMP( 1987, cat,  swyft,   0,      cat,      cat, driver_device,      0,   "Canon",   "Cat", GAME_NOT_WORKING | GAME_NO_SOUND)
	817	/*    YEAR  NAME  PARENT  COMPAT   MACHINE    INPUT    DEVICE         INIT     COMPANY   FULLNAME       FLAGS */
	818	COMP( 1985, swyft,0,      0,       swyft,     swyft,   driver_device, 0,       "Information Applicance Inc", "Swyft", GAME_NOT_WORKING | GAME_NO_SOUND)
	819	COMP( 1987, cat,  swyft,  0,       cat,       cat,     driver_device, 0,       "Canon",  "Cat", GAME_NOT_WORKING | GAME_NO_SOUND)

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