5.25"；软盘驱动器支持? [英] 5.25" floppy drive support?
问题描述
在最近一次去旧货商店的途中，我买了5.25英寸软盘驱动器-只是因为[酷].我当前的系统不支持它也就不足为奇了.
当前是否有芯片组/主板支持5.25英寸软盘驱动器?
在我写这篇文章时，我想到可能会有一个PCI卡可以做到这一点，
On a recent trip to the thrift store, I bought a 5.25" floppy drive -- just because [cool] . It''s no surprise that my current system doesn''t support it.
Are there current chipsets/motherboards that do support 5.25" floppy drives?
It occurred to me, as I was writing this, that there may be a PCI card that would do it, but a brief search didn''t find any.
推荐答案
首先，我震惊在快速解答"中； 可能还有谁对此感兴趣?
First off, I''m shocked that this wound up in "Quick Answers"; who else could possibly be interested in this?
我于2009年1月购买了新的主板等.这是ECS GF7100PVT-M3
I bought a new motherboard etc. last January (2009). It'' s an ECS GF7100PVT-M3
and it does support 5.25" drives!
该手册说它将支持两个软盘驱动器，但是BIOS仅设置一个.
The manual says it will support two floppy drives, but the BIOS has settings for only one.
据我所知，5.25英寸和3.5英寸软盘驱动器使用相同的控制器板和电缆:您可以在带状电缆的两个插头上混合使用两种类型.但是，软盘控制器已从大多数新系统中删除.进行了很大的努力，因为它有一个糟糕的编程接口，需要非常频繁的中断(在非DMA情况下，每字节传输一个字节，我认为存在一些使DMA模式停止工作的问题)这意味着大量的CPU能力正浪费在管理软盘驱动器上.
我认为PCI软盘控制器的市场窗口非常小(如果有的话).尽管软盘驱动器仍然有用，但主板上往往有一个控制器. USB软盘驱动器在板载低引脚数/ISA软盘控制器淘汰之前就已经存在.
我想也许可以拆卸USB 3.5英寸软盘驱动器，看看是否有连接器您可以改为插入5.25英寸驱动器！但是，它可能仍未向操作系统报告正确的驱动器类型.
As far as I recall, 5.25" and 3.5" floppy drives used the same controller board and cabling: you could mix either type on the two plugs on the ribbon cable. However, the floppy controller has been removed from most new systems. There''s been a serious effort to remove it, because it had an awful programming interface that required very frequent interrupts (one per byte transferred in the non-DMA case, and I think there was some problem that stopped DMA mode being useful) meaning that a lot of CPU power was just being wasted on managing the floppy drive.
I think the market window for PCI floppy controllers was very small, if any. While floppy drives were still useful, there tended to be a controller on the motherboard; USB floppy drives came into existence before on-board low-pin-count/ISA floppy controllers were retired.
I suppose it might be possible to dismantle a USB 3.5" floppy drive and see if there''s a connector you could plug into your 5.25" drive instead! It might still not report the right kind of drive to the OS, though.
我建议最灵活的方法可能是安装一台支持DOS和网络并且可以与旧的软盘驱动器一起使用的古老机器.我认为曾经有一些实用程序旨在比使用DOS更快地从软盘驱动器复制文件(它们会读取FAT，找出读取所有其他必要扇区的最佳顺序，然后读取该序列中的扇区).如果您的磁盘包含许多小文件，则该程序可能比DOS更快地读取磁盘.某些此类程序也许还能够以它们在驱动器头下出现的任何顺序读取扇区(每个磁道最多可以节省200ms)，但我不确定.
I would suggest that the most flexible approach might be to get up an ancient machine which supports DOS and networking and can operate with an old floppy drive. I think there were some utilities once upon a time that were designed to copy files from a floppy drive more quickly than would be possible using DOS (they would read the FAT, figure out an optimal sequence to read all other necessary sectors, and then read the sectors in that sequence). If you have disks containing lots of small files, such a program might be able to read the disks a lot faster than would DOS. Some such programs might also have been able to read sectors in whatever order they appeared under the drive head (which could save up to 200ms per track) but I''m not sure.
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