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r1827 Sunday 2nd March, 2008 at 15:50:49 UTC by Wilbert Pol
[SVI318] Updated to use the new 6845 device core.

[src/mess/drivers]	svi318.c
[src/mess/includes]	svi318.h
[src/mess/machine]	svi318.c

src/mess/includes/svi318.h

r1826	r1827
45	45	WRITE8_HANDLER( svi318_fdc_density_side_w );
46	46	DEVICE_LOAD( svi318_floppy );
47	47
	48	MC6845_UPDATE_ROW( svi806_crtc6845_update_row );
48	49	READ8_HANDLER( svi806_r );
49	50	WRITE8_HANDLER( svi806_w );
50	51	WRITE8_HANDLER( svi806_ram_enable_w );
	52	VIDEO_START( svi328_806 );
51	53	VIDEO_UPDATE( svi328_806 );
52	54	MACHINE_RESET( svi328_806 );
53	55

src/mess/machine/svi318.c

r1826	r1827
11	11	#include "driver.h"
12	12	#include "deprecat.h"
13	13	#include "mslegacy.h"
	14	#include "video/mc6845.h"
14	15	#include "includes/svi318.h"
15	16	#include "cpu/z80/z80.h"
16		#include "video/mc6845.h"
17	17	#include "video/tms9928a.h"
18	18	#include "machine/8255ppi.h"
19	19	#include "machine/uart8250.h"
r1826	r1827
60	60	static SVI_318 svi;
61	61	static UINT8 *pcart;
62	62	static UINT32 pcart_rom_size;
	63	static mc6845_t   *mc6845;
63	64
64	65	static void svi318_set_banks (void);
65	66
r1826	r1827
429	430	return INIT_PASS;
430	431	}
431	432
432		static MC6845_UPDATE_ROW( svi806_crtc6845_update_row )
	433	MC6845_UPDATE_ROW( svi806_crtc6845_update_row )
433	434	{
434	435	int i;
435	436
r1826	r1827
446	447	}
447	448	}
448	449
449		static const mc6845_interface svi806_crtc6845_interface = {
450		1,
451		3579545 /*?*/,
452		8 /*?*/,
453		NULL,
454		svi806_crtc6845_update_row,
455		NULL,
456		NULL
457		};
458
459	450	static void svi806_set_crtc_register(UINT8 reg, UINT8 data) {
460		crtc6845_0_address_w(0, reg);
461		crtc6845_0_register_w(0, data);
	451	mc6845_address_w(mc6845, reg);
	452	mc6845_register_w(mc6845, data);
462	453	}
463	454
464		/* 80 column card init */
465		static void svi318_80col_init(void)
466		{
467		/* 2K RAM, but allocating 4KB to make banking easier */
468		/* The upper 2KB will be set to FFs and will never be written to */
469		svi.svi806_ram = new_memory_region( Machine, REGION_GFX2, 0x1000, 0 );
470		memset( svi.svi806_ram, 0x00, 0x800 );
471		memset( svi.svi806_ram + 0x800, 0xFF, 0x800 );
472		svi.svi806_gfx = memory_region(REGION_GFX1);
473		/* initialise 6845 */
474		crtc6845_config( 0, &svi806_crtc6845_interface);
	455	static TIMER_CALLBACK(svi318_80col_init_registers) {
	456	cpuintrf_push_context( 0 );
475	457	/* set some default values for the 6845 controller */
476	458	svi806_set_crtc_register(  0, 109 );
477	459	svi806_set_crtc_register(  1,  80 );
r1826	r1827
489	471	svi806_set_crtc_register( 13,   0 );
490	472	svi806_set_crtc_register( 14,   0 );
491	473	svi806_set_crtc_register( 15,   0 );
	474	cpuintrf_pop_context();
492	475	}
493	476
	477	/* 80 column card init */
	478	static void svi318_80col_init(void)
	479	{
	480	/* 2K RAM, but allocating 4KB to make banking easier */
	481	/* The upper 2KB will be set to FFs and will never be written to */
	482	svi.svi806_ram = new_memory_region( Machine, REGION_GFX2, 0x1000, 0 );
	483	memset( svi.svi806_ram, 0x00, 0x800 );
	484	memset( svi.svi806_ram + 0x800, 0xFF, 0x800 );
	485	svi.svi806_gfx = memory_region(REGION_GFX1);
	486
	487	timer_set( attotime_zero, NULL, 0, svi318_80col_init_registers );
	488	}
	489
494	490	READ8_HANDLER( svi806_r )
495	491	{
496		return crtc6845_0_register_r( offset );
	492	return mc6845_register_r( mc6845 );
497	493	}
498	494
499	495	WRITE8_HANDLER( svi806_w )
500	496	{
501	497	switch( offset ) {
502	498	case 0:
503		crtc6845_0_address_w( offset, data );
	499	mc6845_address_w( mc6845, data );
504	500	break;
505	501	case 1:
506		crtc6845_0_register_w( offset, data );
	502	mc6845_register_w( mc6845, data );
507	503	break;
508	504	}
509	505	}
r1826	r1827
514	510	svi318_set_banks();
515	511	}
516	512
	513	VIDEO_START( svi328_806 ) {
	514	VIDEO_START_CALL(tms9928a);
	515	mc6845 = devtag_get_token(machine, MC6845, "crtc");
	516	}
	517
517	518	VIDEO_UPDATE( svi328_806 )
518	519	{
519	520	if ( screen == 0 )
520	521	VIDEO_UPDATE_CALL(tms9928a);
521		if ( screen == 1 )
522		VIDEO_UPDATE_CALL(crtc6845);
	522	if ( screen == 1 ) {
	523	mc6845_update(mc6845, bitmap, cliprect);
	524	}
523	525	return 0;
524	526	}
525	527

src/mess/drivers/svi318.c

r1826	r1827
10	10	*/
11	11
12	12	#include "driver.h"
	13	#include "video/mc6845.h"
13	14	#include "includes/svi318.h"
14	15	#include "video/tms9928a.h"
15	16	#include "machine/8255ppi.h"
r1826	r1827
352	353	MDRV_MACHINE_RESET( svi318 )
353	354	MACHINE_DRIVER_END
354	355
	356	static const mc6845_interface svi806_crtc6845_interface = {
	357	1,
	358	3579545 /*?*/,
	359	8 /*?*/,
	360	NULL,
	361	svi806_crtc6845_update_row,
	362	NULL,
	363	NULL,
	364	NULL,
	365	NULL
	366	};
	367
355	368	static MACHINE_DRIVER_START( svi328_806 )
356	369	/* Basic machine hardware */
357	370	MDRV_CPU_ADD_TAG( "main", Z80, 3579545 )   /* 3.579545 Mhz */
r1826	r1827
379	392	MDRV_SCREEN_SIZE(640, 400)
380	393	MDRV_SCREEN_VISIBLE_AREA(0,640-1, 0, 400-1)
381	394
	395	MDRV_DEVICE_ADD("crtc", MC6845)
	396	MDRV_DEVICE_CONFIG( svi806_crtc6845_interface )
	397
	398	MDRV_VIDEO_START( svi328_806 )
382	399	MDRV_VIDEO_UPDATE( svi328_806 )
383	400
384	401	/* Sound hardware */

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