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selector.c
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selector.c
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// =====================================================================================
//
// Filename: selector.c
//
// Description:
//
// Version: 1.0
// Created: 03/22/2014 12:10:28 PM
// Revision: none
// Compiler: gcc
//
// Author: Halit Alptekin (), info@halitalptekin.com
// Organization:
//
// =====================================================================================
#include "selector.h"
void selector(virtual_machine* vm){
switch(vm->select->MUX2){
case 0:
/* NEXT */
vm->car_counter += 1;
break;
case 1:
/* LAD */
vm->car_counter = vm->select->ADDRESS;
break;
case 2:
/* LC */
if(vm->flags->C) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
case 3:
/* LNC */
if(!vm->flags->C) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
case 4:
/* LZ */
if(vm->flags->Z) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
case 5:
/* LNZ */
if(!vm->flags->Z) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
case 6:
/* LS */
if(vm->flags->S) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
case 7:
/* LC */
if(vm->flags->C) vm->car_counter = vm->select->ADDRESS;
else vm->car_counter += 1;
break;
default:
vm->car_counter += 1;
break;
}
}