debug.c


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/*	
 *	debug.c is 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.
 *	Note that zero-page addressing is not fully emulated yet; it will still address the zero-page
 	section of memory but the instructions still take an address of length 4.
	This will be fixed later when the whole system is functional.
 *	
 */

#include"include.h"

int charToNum (char c, int mul) {
	if (c != 0x20 && (c >= 0x30 && c <= 0x39)){
		a = (mul * (c - 0x30));
	}else if (c != 0x20 && (c >= 0x41 && c <= 0x46)){
		a = (mul * (c - 0x31));
	}
}

int main(){
	char c;
	unsigned char a, b;
	while(true){
		// Pass 1
		c = getchar(); if (c == EOF) break;
		a += charToNum(c, 0x10);
		// Pass 2
		c = getchar(); if (c == EOF) break;
		a += charToNum(c, 0x01);
		//Check for next value
		c = getchar();
		if (!(c == EOF || c == ' ')) {
			// Four passes
			b += charToNum(c, 0x1000);
			c = getchar(); if (c == EOF) break;
			b += charToNum(c, 0x0100);
			c = getchar(); if (c == EOF) break;
			b += charToNum(c, 0x0010);
			c = getchar(); if (c == EOF) break;
			b += charToNum(c, 0x0001);
		}
		runInstruction(a, b);
		c = getchar(); if (c == EOF) break;
	}
}