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/*
* 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.
* 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.
* There are a few special characters which print debug information
d Prints main system information
mXXXX Prints contents of particular memory location
*/
#include"include.h"
#include"debug.h"
int main(){
char c;
unsigned char a, b;
while(1){
c = getchar();
// Exit condition
if ( (c == 'X') || (c == 'x') || (c == EOF) ) break;
if (dChar2Num(c) == -1){
// Debug print conditions
switch(c){
case 'P': case 'p': // Print debug information
debug_print();
break;
case 'M': case 'm': // Dump memory page
dChar2Num(getchar());
printf("Address %d has %x", m, Memory[m]);
break;
case ' ':
break;
}
}else{
// Run Instruction
byte inst = c
}
a += dChar2Num(c, 0x10);
// Pass 2
c = getchar(); if (c == EOF) break;
a += dChar2Num(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;
}
return 0;
}
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