#ifndef CONTEXT_H
#define CONTEXT_H

#include <C8051f020.h>

#define NUM_TASKS 4

typedef struct
{
   int t_delay;            // delay time, used later
   unsigned char t_reg[9]; // current registers (B as t_reg[8])
   unsigned char acc, psw; // accumulator and status word
   unsigned int dptr;      // current data pointer
   void (code *t_pc)(void);// current pc
   unsigned char t_sp;     // current stack pointer
} task_descriptor;

extern xdata task_descriptor taskdesc[];

//
// least significant 8-bits of the task descriptor
//
extern task_descriptor xdata *current_task;

void context_init(void);

void yield(void);

#endif