void z80_write(uint32_t addr, uint8_t data);
uint8_t z80_read(uint32_t addr);
void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
void z80_write_block(const FLASH uint8_t *src, uint32_t dest, uint32_t length);
void z80_write(uint32_t addr, uint8_t data);
uint8_t z80_read(uint32_t addr);
void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
void z80_write_block(const FLASH uint8_t *src, uint32_t dest, uint32_t length);