es
			this.hires = false;
			this.p = [[], []];
			for(var z = 0; z < 32*64; z++) { this.p[0][z] = 0; this.p[1][z] = 0; }
			return;
		}
		if (op == 0x00FF) {
			// hires
			this.hires = true;
			this.p = [[], []];
			for(var z = 0; z < 64*128; z++) { this.p[0][z] = 0; this.p[1][z] = 0; }
			return;
		}
		if (op == 0xF000) {
			// long memory reference
			this.i = ((this.m[this.pc] << 8) | (this.m[this.pc+1])) & 0xFFFF;
			this.pc += 2;
			return;
		}

		if (o == 0x5 && n != 0) {
			if (n == 2) {
				// sav