psema4 · August 29, 2015 14:09
diff --git a/oisc.html b/oisc.html
 <!doctype html>
 <html lang="en">
    <head>
        <title>OISC in a web page</title>
    </head>

    <body>
    <script>
 /* pseudocode source: http://en.wikipedia.org/wiki/One_instruction_set_computer

 integer memory[], program_counter, a, b, c
 program_counter = 0
 while (program_counter >= 0):
    a = memory[program_counter]
    b = memory[program_counter+1]
    c = memory[program_counter+2]
    if (a < 0 or b < 0):
        program_counter = -1
    else:
        memory[b] = memory[b] - memory[a]
        if (memory[b] > 0):
            program_counter = program_counter + 3
        else:
            program_counter = c
 */

 window.addEventListener('load', function() {
    console.log('load');

    var memory, pc, a, b, c;

    pc = 0; // program counter
    
    memory = [      // Addr Instr
         0,  0,  9  //  0 - JMP 9
      , -1, -1, -1  //  3 - HALT
      , -1, -1, -1  //  6 - HALT
      , -1, -1, -1  //  9 - HALT
      , -1. -1. -1  // 12 - HALT
    ];

    do {
        a = memory[pc];
        b = memory[pc+1];
        c = memory[pc+2];

        // dump registers
        console.log("PC:%s A:%s B:%s C:%s", pc, a, b, c);

        if ((a < 0) || (b < 0)) {
            pc = -1; // stop program

        } else {
            // subtract and branch if less than or equal to zero
            memory[b] = memory[b] - memory[a];
            
            if (memory[b] > 0) {
                pc = pc + 3; // read next instruction
                
            } else {
                pc = c; // set pc
            }
        }

    } while (pc >= 0);

    console.log('halt');
 });
        </script>
    </body>
 </html>
	<!doctype html>
	<html lang="en">
	<head>
	<title>OISC in a web page</title>
	</head>

	<body>
	<script>
	/* pseudocode source: http://en.wikipedia.org/wiki/One_instruction_set_computer

	integer memory[], program_counter, a, b, c
	program_counter = 0
	while (program_counter >= 0):
	a = memory[program_counter]
	b = memory[program_counter+1]
	c = memory[program_counter+2]
	if (a < 0 or b < 0):
	program_counter = -1
	else:
	memory[b] = memory[b] - memory[a]
	if (memory[b] > 0):
	program_counter = program_counter + 3
	else:
	program_counter = c
	*/

	window.addEventListener('load', function() {
	console.log('load');

	var memory, pc, a, b, c;

	pc = 0; // program counter

	memory = [ // Addr Instr
	0, 0, 9 // 0 - JMP 9
	, -1, -1, -1 // 3 - HALT
	, -1, -1, -1 // 6 - HALT
	, -1, -1, -1 // 9 - HALT
	, -1. -1. -1 // 12 - HALT
	];

	do {
	a = memory[pc];
	b = memory[pc+1];
	c = memory[pc+2];

	// dump registers
	console.log("PC:%s A:%s B:%s C:%s", pc, a, b, c);

	if ((a < 0) \|\| (b < 0)) {
	pc = -1; // stop program

	} else {
	// subtract and branch if less than or equal to zero
	memory[b] = memory[b] - memory[a];

	if (memory[b] > 0) {
	pc = pc + 3; // read next instruction

	} else {
	pc = c; // set pc
	}
	}

	} while (pc >= 0);

	console.log('halt');
	});
	</script>
	</body>
	</html>