jacobmischka

/* --- Stack operations --- */
static void pushb(BYTE val) {
	Memory_WriteByte((STACK_ADDR | cpu.SP--), val);
}

static void pushw(WORD val) {
	BYTE tmp = (BYTE)(val & 0xFF);
	Memory_WriteByte((STACK_ADDR | cpu.SP--), tmp);
	tmp = (BYTE)((val & 0xFF00) >> 8);
	Memory_WriteByte((STACK_ADDR | cpu.SP--), tmp);

jacobmischka

void disassemble2() {
	printf("$%04X %02X | A:%02X X:%02X Y:%02X SP:%02X | C:%d Z:%d I:%d D:%d V:%d B:%d N:%d | S: %02X %02X\n",
		cpu.operaddr, cpu.operand, cpu.A, cpu.X, cpu.Y, cpu.SP,
		GET_FLAG(FLAG_C) != 0, GET_FLAG(FLAG_Z) != 0, GET_FLAG(FLAG_I) != 0, GET_FLAG(FLAG_D) != 0,
		GET_FLAG(FLAG_V) != 0, GET_FLAG(FLAG_B) != 0, GET_FLAG(FLAG_N) != 0, Memory_ReadByte(STACK_ADDR | (cpu.SP+1)), Memory_ReadByte(STACK_ADDR | (cpu.SP+2)));
}

jacobmischka

test = open("test.log")
nestest = open("nestest.log")
lineCount = 0

for testLine, nestestLine in zip(test, nestest):
    if testLine[1:5] != nestestLine[:4]:
        print(testLine)

jacobmischka

/* Indirect */
static void IND() {
	cpu.indoperaddr = Memory_ReadWord(cpu.PC);
	if((cpu.indoperaddr & 0x00FF) == 0x00FF){
		cpu.operaddr = (WORD)Memory_ReadByte(cpu.indoperaddr) | ((WORD)Memory_ReadByte(cpu.indoperaddr & 0xFF00) << 8);
	}
	else
 		cpu.operaddr = Memory_ReadWord(cpu.indoperaddr);
	cpu.PC += 2;
	/* TODO: Implement bug */

jacobmischka

/* Force break */
/* I=1 */
static void BRK() {
    cpu.PC++;
    pushw(cpu.PC);
    pushb(cpu.S);
    SET_FLAG(FLAG_I);
    if(NMI){
        cpu.PC = Memory_ReadWord(0xFFFA);
    }

jacobmischka

/* Interrupt functions */
/* TODO: Interrupt hijacking */
void interrupt_IRQ() {
	CLEAR_FLAG(FLAG_B);
	cpu.PC++;
	pushw(cpu.PC);
	pushb(cpu.S);
	SET_FLAG(FLAG_I);
	cpu.PC = Memory_ReadWord(0xFFFE);
}

jacobmischka

	if (cpu.cycles >= 30000) { // "about" 30000 cycles
		ppu.controller = val;

		ppu.vram_addr_inc = ((val >> 2) & 0x1) ? 1: 32;
		ppu.sprite_pattern_addr = ((val >> 3) & 0x1) * 0x1000;
		ppu.bg_pattern_addr = ((val >> 4) & 0x1) * 0x1000;
		ppu.sprite_height = ((val >> 5) & 0x1) ? 8 : 16;
		ppu.nmi_on_vblank = (val >> 7) & 0x1;

		// Change scroll latch to match base nametable address

jacobmischka

import QtQuick 2.0

Rectangle {
    id: oauth
    width: 640
    height: 480
    color: "#ccd6dd"

    Text {
        id: link

jacobmischka

n
		dx = -dist*math.cos(-self.cam.rot)
		dy = -dist*math.sin(-self.cam.rot)
		if self.world:isLand(self.player.x+dx, self.player.y+dy) then
			self.cam:move(dx, dy)
			self.player:move(dx, dy, "left")
		end
	elseif key == "s" then
		dx = dist*math.sin(self.cam.rot)
		dy = dist*math.cos(self.cam.rot)

jacobmischka

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