rocnrope.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

/***************************************************************************

Based on drivers from Juno First emulator by Chris Hardy ([e-mail])

***************************************************************************/

#include "driver.h"
#include "vidhrdw/generic.h"
#include "M6809/M6809.h"



void rocnrope_flipscreen_w(int offset,int data);
void rocnrope_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void rocnrope_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);

unsigned char KonamiDecode( unsigned char opcode, unsigned short address );


void rocnrope_init_machine(void)
{
	/* Set optimization flags for M6809 */
	m6809_Flags = M6809_FAST_S | M6809_FAST_U;
}

/* Roc'n'Rope has the IRQ vectors in RAM. The rom contains $FFFF at this address! */
void rocnrope_interrupt_vector_w(int offset, int data)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	RAM[0xFFF2+offset] = data;
}

/* I am not 100% sure that this timer is correct, but */
/* I'm using the Gyruss wired to the higher 4 bits    */
/* instead of the lower ones, so there is a good      */
/* chance it's the right one. */

/* The timer clock which feeds the lower 4 bits of牋