view lc8951.h @ 2062:07ed42bd7b4c segacd

Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
author Michael Pavone <pavone@retrodev.com>
date Fri, 28 Jan 2022 00:50:17 -0800
parents 70260f6051dd
children 02a9846668d1
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#ifndef LC8951_H_
#define LC8951_H_

#include <stdint.h>

typedef struct {
	uint32_t cycle;
	uint32_t clock_step;
	uint32_t decode_end;
	uint32_t transfer_end;

	uint8_t buffer[0x4000];

	uint8_t regs[16];
	uint8_t comin[8];

	uint16_t dac;
	uint8_t comin_write;
	uint8_t comin_count;
	uint8_t ifctrl;
	uint8_t ctrl0;
	uint8_t ctrl1;
	uint8_t ar;
	uint8_t ar_mask;
	uint8_t decoding;
	uint16_t ptl_internal;
} lc8951;

void lc8951_init(lc8951 *context);
void lc8951_run(lc8951 *context, uint32_t cycle);
void lc8951_reg_write(lc8951 *context, uint8_t value);
uint8_t lc8951_reg_read(lc8951 *context);
void lc8951_ar_write(lc8951 *context, uint8_t value);
void lc8951_write_byte(lc8951 *context, uint32_t cycle, int sector_offset, uint8_t byte);
uint32_t lc8951_next_interrupt(lc8951 *context);

#endif //LC8951_H_