[Info-vax] Processes hang on USB-access

[Simon Clubley]

On 2022-03-03, Joukj <joukj at hrem.nano.tudelft.nl> wrote:
> Volker Halle wrote:
>> Only the SDA> USB SHOW OHCI UCB command may show useful information
>> 
>
> On the system where the USB is still working normally:
>
>
> SDA> USB SHOW OHCI UCB
> Open Host Controller UCB extensions
> Direct DMA window base address      0000000000000000
> I/O handle                          ffffffff826eb380

[snip]

OHCI and EHCI are not the same thing.

OHCI controllers are for full-speed and low-speed devices while EHCI
controllers are for the high-speed devices.

Volker, does VMS use this OHCI command to show the EHCI data, or is
there also an EHCI show command as well ?

For this command to be of any use, it needs to show the detailed
TD entry data as well so you can see the status of each TD.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.