Lars Erdmann updated the USB host controller drivers to version 10.253. (2026-05-04)
- Hobbes (Beta)
USBDRV is an updated USB host controller drivers: USBUHCD.SYS, USBOHCD.SYS, USBEHCD.SYS, USBD.SYS, USBRESMG.SYS and more USB drivers.
Project URL: http://trac.netlabs.org/usb
changes in 10.253:
USBMSD:
1) change driver so that USB attached CD/DVD-Writers are now supported (detected) by cdrecord.exe/cdrecord2.exe/dvddao.exe
(provided that OS2ASPI.DMD and ASPIROUT.SYS/ASPINKK.SYS are installed)
USBEHCD:
1) changes in "AddIsoTDsToSchedule","IsoFillTD","IsoPullTD" to correctly compute number of used microframes in a frame for
isochronous FS transfers on a system that only has EHCD and a rate matching hub
(instead of OHCI/UHCI companion controllers for FS transfers)
2) corrections in "CheckIsoBandwidth" and "RecalculateIsoBand" to allocate/release USB bandwidth across the whole isochronous
frame list and to not only allocate from the earliest point of replay/recording as the replay/recording will typically be
longer than the isochronous frame list length (1024 ms) and will therefore need bandwidth allocation over the whole
frame list length