irq.h

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#include <stdbool.h>
 
#ifndef _IRQ_H_
#define _IRQ_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
// Set the reload value for the timer IRQ.
void fds_set_timer_irq_reload(unsigned value);
 
// Set the control bits for the timer IRQ.
void fds_set_timer_irq_ctrl(bool enabled, bool repeat);
 
#define NMI_ACTION_VINTWAIT 0b00000000
#define NMI_ACTION_USER_1 0b01000000
#define NMI_ACTION_USER_2 0b10000000
#define NMI_ACTION_USER_3 0b11000000
 
// Set action on NMI. Should be one of NMI_ACTION_VINTWAIT,
// NMI_ACTION_USER_1, NMI_ACTION_USER_2, or NMI_ACTION_USER_3.
void fds_set_nmi_action(char action);
 
#define IRQ_ACTION_DISK_TRANSFER 0b01000000
#define IRQ_ACTION_ACK_DELAY 0b10000000
#define IRQ_ACTION_USER 0b11000000
 
// Set action on IRQ. Should be one of IRQ_ACTION_DISK_TRANSFER,
// IRQ_ACTION_ACK_DELAY, or IRQ_ACTION_USER. Alternatively, a 6-bit
// value can be passed to use the "skip bytes" action, which will
// skip the given amount of bytes on disk.
void fds_set_irq_action(char action);
 
#define RESET_TYPE_HARD 0xAC
#define RESET_TYPE_SOFT 0x53
 
// Set reset type. Should be one of RESET_TYPE_HARD
// or RESET_TYPE_SOFT.
void fds_set_reset_type(char type);
 
#ifdef __cplusplus
}
#endif
 
#endif