/* * ===================================================================================== * * .d8888b 88888b. .d88b. .d8888b 888d888 8888b. 88888b.d88b. * 88K 888 "88b d8P Y8b 88K 888P" "88b 888 "888 "88b * "Y8888b. 888 888 88888888 "Y8888b. 888 .d888888 888 888 888 * X88 888 888 Y8b. X88 888 888 888 888 888 888 * 88888P' 888 888 "Y8888 88888P' 888 "Y888888 888 888 888 * * www.optixx.org * * * Version: 1.0 * Created: 07/21/2009 03:32:16 PM * Author: david@optixx.org * * ===================================================================================== */ #ifndef __SRAM_H__ #define __SRAM_H__ #include #include #include /* ---------------------------- PORT A ---------------------------- */ #define AVR_DATA_PORT PORTA #define AVR_DATA_DIR DDRA #define AVR_DATA_PIN PINA #define avr_data_in() ((AVR_DATA_DIR = 0x00),\ (AVR_DATA_PORT = 0x00)) #define avr_data_out() (AVR_DATA_DIR = 0xff) #define LED_PORT PORTC #define LED_DIR DDRC #define LED_PIN PC7 #define led_on() ((LED_PORT &=~ (1 << LED_PIN)),\ (LED_DIR &=~ (1 << LED_PIN))) #define led_off() ((LED_PORT &=~ (1 << LED_PIN)),\ (LED_DIR |= (1 << LED_PIN))) /* ---------------------------- PORT B ---------------------------- */ #define AVR_PORT PORTB #define AVR_DIR DDRB #define AVR_RD_PORT PORTB #define AVR_RD_DIR DDRB #define AVR_RD_PIN PB2 #define avr_rd_hi() (AVR_RD_PORT |= (1 << AVR_RD_PIN)) #define avr_rd_lo() (AVR_RD_PORT &= ~(1 << AVR_RD_PIN)) #define AVR_WR_PORT PORTB #define AVR_WR_DIR DDRB #define AVR_WR_PIN PB1 #define avr_wr_hi() (AVR_WR_PORT |= (1 << AVR_WR_PIN)) #define avr_wr_lo() (AVR_WR_PORT &= ~(1 << AVR_WR_PIN)) #define AVR_CS_PORT PORTB #define AVR_CS_DIR DDRB #define AVR_CS_PIN PB0 #define avr_cs_hi() (AVR_CS_PORT |= (1 << AVR_CS_PIN)) #define avr_cs_lo() (AVR_CS_PORT &= ~(1 << AVR_CS_PIN)) #define SNES_IRQ_PORT PORTB #define SNES_IRQ_DIR DDRB #define SNES_IRQ_PIN PB3 #define snes_irq_on() (SNES_IRQ_DIR |= (1 << SNES_IRQ_PIN)) #define snes_irq_hi() (SNES_IRQ_PORT |= (1 << SNES_IRQ_PIN)) #define snes_irq_off() (SNES_IRQ_DIR &= ~(1 << SNES_IRQ_PIN)) #define snes_irq_lo() (SNES_IRQ_PORT &= ~(1 << SNES_IRQ_PIN)) /* ---------------------------- PORT C ---------------------------- */ #define AVR_ADDR_PORT PORTC #define AVR_ADDR_DIR DDRC #define AVR_ADDR_LATCH_PORT PORTC #define AVR_ADDR_LATCH_DIR DDRC #define AVR_ADDR_LATCH_PIN PC6 #define avr_addr_latch_hi() (AVR_ADDR_LATCH_PORT |= (1 << AVR_ADDR_LATCH_PIN))) #define avr_addr_latch_lo() (AVR_ADDR_LATCH_PORT &= ~(1 << AVR_ADDR_LATCH_PIN))) #define AVR_ADDR_SCK_PORT PORTC #define AVR_ADDR_SCK_DIR DDRC #define AVR_ADDR_SCK_PIN PC5 #define avr_addr_sck_hi() (AVR_ADDR_SCK_PORT |= (1 << AVR_ADDR_SCK_PIN))) #define avr_addr_sck_lo() (AVR_ADDR_SCK_PORT &= ~(1 << AVR_ADDR_SCK_PIN))) #define AVR_ADDR_SER_PORT PORTC #define AVR_ADDR_SER_DIR DDRC #define AVR_ADDR_SER_PIN PC4 #define avr_addr_ser_hi() (AVR_ADDR_SER_PORT |= (1 << AVR_ADDR_SER_PIN))) #define avr_addr_ser_lo() (AVR_ADDR_SER_PORT &= ~(1 << AVR_ADDR_SER_PIN))) #define AVR_ADDR_LOAD_PORT PORTC #define AVR_ADDR_LOAD_DIR DDRC #define AVR_ADDR_LOAD_PIN PC2 #define counter_load() ((AVR_ADDR_LOAD_PORT &= ~(1 << AVR_ADDR_LOAD_PIN)),\ (AVR_ADDR_LOAD_PORT |= (1 << AVR_ADDR_LOAD_PIN))) #define AVR_ADDR_DOWN_PORT PORTC #define AVR_ADDR_DOWN_DIR DDRC #define AVR_ADDR_DOWN_PIN PC1 #define counter_down() ((AVR_ADDR_DOWN_PORT &= ~(1 << AVR_ADDR_DOWN_PIN)),\ (AVR_ADDR_DOWN_PORT |= (1 << AVR_ADDR_DOWN_PIN))) #define AVR_ADDR_UP_PORT PORTC #define AVR_ADDR_UP_DIR DDRC #define AVR_ADDR_UP_PIN PC0 #define counter_up() ((AVR_ADDR_UP_PORT &= ~(1 << AVR_ADDR_UP_PIN)),\ (AVR_ADDR_UP_PORT |= (1 << AVR_ADDR_UP_PIN))) #define SNES_WR_PORT PORTC #define SNES_WR_DIR DDRC #define SNES_WR_PIN PC3 /* ---------------------------- PORT D ---------------------------- */ #define AVR_SNES_PORT PORTD #define AVR_SNES_DIR DDRD #define AVR_SNES_SW_PORT PORTD #define AVR_SNES_SW_DIR DDRD #define AVR_SNES_SW_PIN PD5 #define avr_bus_active() ((AVR_SNES_SW_PORT &= ~(1 << AVR_SNES_SW_PIN)),\ (HI_LOROM_SW_PORT |= (1 << HI_LOROM_SW_PIN)),\ (AVR_CS_DIR |= (1 << AVR_CS_PIN))) #define snes_bus_active() ((AVR_SNES_SW_PORT |= (1 << AVR_SNES_SW_PIN)),\ (AVR_CS_DIR &= ~(1 << AVR_CS_PIN))) #define HI_LOROM_SW_PORT PORTD #define HI_LOROM_SW_DIR DDRD #define HI_LOROM_SW_PIN PD6 #define snes_hirom() (HI_LOROM_SW_PORT &= ~(1 << HI_LOROM_SW_PIN)) #define snes_lorom() (HI_LOROM_SW_PORT |= (1 << HI_LOROM_SW_PIN)) #define SNES_WR_EN_PORT PORTD #define SNES_WR_EN_DIR DDRD #define SNES_WR_EN_PIN PD7 #define snes_wr_disable() (SNES_WR_EN_PORT &= ~(1 << SNES_WR_EN_PIN)) #define snes_wr_enable() (SNES_WR_EN_PORT |= (1 << SNES_WR_EN_PIN)) void system_init(void); void sreg_set(uint32_t addr); uint8_t sram_read(uint32_t addr); void sram_write(uint32_t addr, uint8_t data); void sram_set(uint32_t addr, uint32_t len, uint8_t value); void sram_copy(uint32_t addr,uint8_t *src, uint32_t len); void sram_read_buffer(uint32_t addr,uint8_t *dst, uint32_t len); void sram_bulk_read_start(uint32_t addr); inline void sram_bulk_read_next(void); inline void sram_bulk_read_end(void); uint8_t sram_bulk_read(void); void sram_bulk_write_start(uint32_t addr); inline void sram_bulk_write_next(void); inline void sram_bulk_write_end(void); void sram_bulk_write(uint8_t data); void sram_bulk_copy(uint32_t addr, uint8_t * src, uint32_t len); void sram_bulk_read_buffer(uint32_t addr, uint8_t * dst, uint32_t len); void sram_bulk_set(uint32_t addr, uint32_t len,uint8_t value); #endif