ZIP has the lowlevel set aspiohci , aspiuhci and aspiehci and the highlevel part guest. They were initially released into public in —07 and they are still in intensive development. There used to be the Motto Hairu diver included but now you have to download it separately: Nice… I have had that same problem accessing anything on http: Again, problem can be random just retry or persistent. Also consists of two parts. View Edit History Print.

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Useful Dos Files

Besides the source code you can find a great manual and programming info about USB. SYS is just and outdated rebrand of usbaspi. USB 1 can transfer by speed of 1. Following is an incomplete list of USB flaws and problems that could or can be observed:.

Interesting DOS programs

There are various open bugs the author is aware of, and should be fixed in next version:. ZIP has the lowlevel set aspiohciaspiuhci and aspiehci and the highlevel part guest. Obviously this is a driver bug, an incompliant or defective USB device or transfer errors should not be able to cause such effects. What is important – the modules for input devices mouse, keyboard and joystick and printers are fully working ready for every day use and transparent to DOS so everything works like normal legacy devices.


Of course a slow hard disk used as source or destination for copying will also ruin the performance.

The duwe part is called sbp2aspi and the highlevel nj32disk. USB drivers sorted from latest and best to oldest and most historical 2. Again, problem can be random just retry or persistent. They are comparable, both provide not only USB storage support but also USB keyboards, mice, printers and other devices.

Currently last update —01—30 they support only USB 1. Devices revealing this problem by the activity light for example different colour for USB 1 vs USB 2 mode exist but are very rare.

It implements only read access, no write support yet. Historical pre-release news from —11— If it seems persistent, following reasons are possible:. Workarounds worth to try:.

Can be booted from floppy or CD. Writes with DOS on FAT filesystems are typically cca 3 times slower than reading, can dis worse in some cases depending from FAT subversion, cluster size, and block size used by the application.

SYS or from command line. Developed by Panasonic in …, latest version seems to be 2.

They are supposed to work only with some specified hardware by one manufacturer. Workarounds worth to try: Unplugging the device may terminate a driver deadloop, or not.


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USB protocols are intended to be safe, and to recover from errors by resending data blocks that seem to have got lost or corrupted. The drivers work in the background and are able to handle more than one USB device at the same time. It is fine that it supports hot-plugging not partially but completely and you can change one flashdisk to another.

OHCI is currently under development. It provides limited hotplug support only. Also USB 2 cardreaders can be slow even very slow – even if you insert a fast card and connect to a fast PC, some reader internals will slow down the transfer to near USB 1 performace. You can even try to mix them with counterparts by Panasonic. Also fragmentation and low free space can cause an additional slowdown. The archive contains three files: Nice… I have had that same problem accessing anything on http: It works only in USB 1 mode.