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Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
author Michael Pavone <pavone@retrodev.com>
date Mon, 13 Apr 2020 20:43:25 -0700
parents d94855080529
children
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#ifndef I2C_H_
#define I2C_H_

typedef struct {
	char        *buffer;
	uint32_t    size;
	uint16_t    address;
	uint8_t     host_sda;
	uint8_t     slave_sda;
	uint8_t     scl;
	uint8_t     state;
	uint8_t     counter;
	uint8_t     latch;
} eeprom_state;

void eeprom_init(eeprom_state *state, uint8_t *buffer, uint32_t size);
void * write_eeprom_i2c_w(uint32_t address, void * context, uint16_t value);
void * write_eeprom_i2c_b(uint32_t address, void * context, uint8_t value);
uint16_t read_eeprom_i2c_w(uint32_t address, void * context);
uint8_t read_eeprom_i2c_b(uint32_t address, void * context);

#endif //I2C_H_