#ifndef __SYSTEM_H
#define __SYSTEM_H
/* Primitives */
typedef enum { false, true } bool;
/* MAIN.C */
extern unsigned char *memcpy(unsigned char *dest, const unsigned char *src, int count);
extern unsigned char *memset(unsigned char *dest, unsigned char val, int count);
extern unsigned short *memsetw(unsigned short *dest, unsigned short val, int count);
extern int strlen(const char *str);
extern unsigned char inportb (unsigned short _port);
extern void outportb (unsigned short _port, unsigned char _data);
/* ISRS.C */
void isrs_install();
/* This defines what the stack looks like after an ISR was running */
struct regs
{
    unsigned int gs, fs, es, ds;      /* pushed the segs last */
    unsigned int edi, esi, ebp, esp, ebx, edx, ecx, eax;  /* pushed by 'pusha' */
    unsigned int int_no, err_code;    /* our 'push byte #' and ecodes do this */
    unsigned int eip, cs, eflags, useresp, ss;   /* pushed by the processor automatically */ 
};
/* IRQ.C */
void irq_install_handler(int irq, void (*handler)(struct regs *r));
void irq_uninstall_handler(int irq);
void irq_install();
/* TIMER.C */
void timer_handler(struct regs *r);
void timer_install();
/* KB.C */
void kb_install();
#endif