Note that INT 21h/58h was not documented in official Microsoft programming references for DOS 2.x, 3.x, and 4.0. The DOS 5.0 reference does document AllocOper, but claims that it was added in DOS 3.0, which is not quite true.
Up to 10 simultaneous connections，这一点在体育直播中也有详细论述
。旺商聊官方下载是该领域的重要参考
Ноттингем Форест
So if it didn’t lead to a flame war, it was still sometimes somewhat painful.，详情可参考体育直播