/*	
 *	interpreter.c WILL BE a tool which can be used to interpret 6502 machine code inline.
 *	Machine code is expected as hexadecimal of length 2 or 6, depending on the instruction.
 *	There are a few special characters which print debug information
		Q - Quit
		P - Processor status dump
		M - Dump a page of memory
 */

#include"include.h"
#include"debug.h"

int main(){
	char c;
	unsigned char a, b;
	
	initIT();

	while(1){
		c = fgetc(stdin);

		//	Exit condition
		if ( (c == 'Q') || (c == 'q') || (c == EOF) ) break;

		if (dCharToNum(c) == -1){
			//	Debug print conditions
			switch(c){
				//	Print debug information
				case 'P': case 'p':
					dStatusDump();
					break;
				//	Dump memory page
				case 'M': case 'm':
					byte m;
					m += dCharToNum(fgetc(stdin)) << 4;
					m += dCharToNum(fgetc(stdin));
					dPageDump(m);
					break;
				case ' ': case '\n':
					break;
			}
		}else{ // RUN INSTRUCTION
			// Pass in Instruction
			byte inst = dCharToNum(c) << 4;
			inst += dCharToNum(fgetc(stdin));
			// Pass in Value
			address pass = 0x0000;
			int range = fAddressGetLength(getITAddressing(inst));
			printf("range = %d\n", range); //DEBUG
			range = ((2*range)-2);
			c = fgetc(stdin);
			for(int i = 0; i < range; i++){
				if ((c == ' ') || (c == '\n')){
					i--;
				}else{
					pass <<= 4;
					pass += c;
				}
				c = fgetc(stdin);
			}
			current_instruction = getITFunction(inst);
			callIT(current_instruction, pass);
		}
	}
	return 0;
}