/** * Opcode #0xFF. * * RST 0x38 * * @param Core $core */ public static function opcode255(Core $core) { $core->stackPointer = $core->unswtuw($core->stackPointer - 1); $core->memoryWrite($core->stackPointer, $core->programCounter >> 8); $core->stackPointer = $core->unswtuw($core->stackPointer - 1); $core->memoryWrite($core->stackPointer, $core->programCounter & 0xff); $core->programCounter = 0x38; }