interrupt.c File Reference

Interrupt Controller. More...

Data Structures
struct	_callback_link
	Structure of an interrupt callback. More...

Macros
#define	MI_INTR_SP   0x01
	SP interrupt bit.
#define	MI_INTR_SI   0x02
	SI interrupt bit.
#define	MI_INTR_AI   0x04
	AI interrupt bit.
#define	MI_INTR_VI   0x08
	VI interrupt bit.
#define	MI_INTR_PI   0x10
	PI interrupt bit.
#define	MI_INTR_DP   0x20
	DP interrupt bit.
#define	MI_MASK_SP   0x01
	SP mask bit.
#define	MI_MASK_SI   0x02
	SI mask bit.
#define	MI_MASK_AI   0x04
	AI mask bit.
#define	MI_MASK_VI   0x08
	VI mask bit.
#define	MI_MASK_PI   0x10
	PI mask bit.
#define	MI_MASK_DP   0x20
	DP mask bit.
#define	MI_MASK_CLR_SP   0x0001
	Clear SP mask.
#define	MI_MASK_SET_SP   0x0002
	Set SP mask.
#define	MI_MASK_CLR_SI   0x0004
	Clear SI mask.
#define	MI_MASK_SET_SI   0x0008
	Set SI mask.
#define	MI_MASK_CLR_AI   0x0010
	Clear AI mask.
#define	MI_MASK_SET_AI   0x0020
	Set AI mask.
#define	MI_MASK_CLR_VI   0x0040
	Clear VI mask.
#define	MI_MASK_SET_VI   0x0080
	Set VI mask.
#define	MI_MASK_CLR_PI   0x0100
	Clear PI mask.
#define	MI_MASK_SET_PI   0x0200
	Set PI mask.
#define	MI_MASK_CLR_DP   0x0400
	Clear DP mask.
#define	MI_MASK_SET_DP   0x0800
	Set DP mask.
#define	PI_CLEAR_INTERRUPT   0x02
	Bit to set to clear the PI interrupt.
#define	SI_CLEAR_INTERRUPT   0
	Bit to set to clear the SI interrupt.
#define	SP_CLEAR_INTERRUPT   0x08
	Bit to set to clear the SP interrupt.
#define	DP_CLEAR_INTERRUPT   0x0800
	Bit to set to clear the DP interrupt.
#define	AI_CLEAR_INTERRUPT   0
	Bit to set to clear the AI interrupt.
#define	MAX_RESET_HANDLERS   4
	Maximum number of reset handlers that can be registered.

Functions
void	__MI_handler (void)
	Handle an MI interrupt. More...
void	__TI_handler (void)
	Handle a timer interrupt.
void	__CART_handler (void)
	Handle a CART interrupt.
void	__RESET_handler (void)
	Handle a RESET (pre-NMI) interrupt. More...
void	register_AI_handler (void(*callback)())
	Register an AI callback. More...
void	unregister_AI_handler (void(*callback)())
	Unregister an AI callback. More...
void	register_VI_handler (void(*callback)())
	Register a VI callback. More...
void	unregister_VI_handler (void(*callback)())
	Unregister a VI callback. More...
void	register_PI_handler (void(*callback)())
	Register a PI callback. More...
void	unregister_PI_handler (void(*callback)())
	Unegister a PI callback. More...
void	register_DP_handler (void(*callback)())
	Register a DP callback. More...
void	unregister_DP_handler (void(*callback)())
	Unregister a DP callback. More...
void	register_SI_handler (void(*callback)())
	Register a SI callback. More...
void	unregister_SI_handler (void(*callback)())
	Unegister a SI callback. More...
void	register_SP_handler (void(*callback)())
	Register a SP callback. More...
void	unregister_SP_handler (void(*callback)())
	Unegister a SP callback. More...
void	register_TI_handler (void(*callback)())
	Register a timer callback. More...
void	unregister_TI_handler (void(*callback)())
	Unregister a timer callback. More...
void	register_CART_handler (void(*callback)())
	Register a CART interrupt callback. More...
void	unregister_CART_handler (void(*callback)())
	Unregister a CART interrupt callback. More...
void	register_RESET_handler (void(*callback)())
	Register a handler that will be called when the user presses the RESET button. More...
void	unregister_RESET_handler (void(*callback)())
	Unregister a RESET interrupt callback. More...
void	set_AI_interrupt (int active)
	Enable or disable the AI interrupt. More...
void	set_VI_interrupt (int active, unsigned long line)
	Enable or disable the VI interrupt. More...
void	set_PI_interrupt (int active)
	Enable or disable the PI interrupt. More...
void	set_DP_interrupt (int active)
	Enable or disable the DP interrupt. More...
void	set_SI_interrupt (int active)
	Enable or disable the SI interrupt. More...
void	set_SP_interrupt (int active)
	Enable or disable the SP interrupt. More...
void	set_TI_interrupt (int active)
	Enable or disable the timer interrupt. More...
void	set_CART_interrupt (int active)
	Enable or disable the CART interrupt. More...
void	set_RESET_interrupt (int active)
	Enable the RESET interrupt. More...
void	__init_interrupts ()
	Initialize the interrupt controller.
void	disable_interrupts ()
	Disable interrupts systemwide. More...
void	enable_interrupts ()
	Enable interrupts systemwide. More...
interrupt_state_t	get_interrupts_state ()
	Return the current state of interrupts. More...
uint32_t	exception_reset_time (void)
	Check whether the RESET button was pressed and how long we are into the reset process. More...

Variables
uint32_t	interrupt_disabled_tick = 0
	tick at which interrupts were disabled. More...
struct callback_link *	AI_callback = 0
	Linked list of AI callbacks.
struct callback_link *	VI_callback = 0
	Linked list of VI callbacks.
struct callback_link *	PI_callback = 0
	Linked list of PI callbacks.
struct callback_link *	DP_callback = 0
	Linked list of DP callbacks.
struct callback_link *	SI_callback = 0
	Linked list of SI callbacks.
struct callback_link *	SP_callback = 0
	Linked list of SP callbacks.
struct callback_link *	TI_callback = 0
	Linked list of TI callbacks.
struct callback_link *	CART_callback = 0
	Linked list of CART callbacks.

Detailed Description

Interrupt Controller.