[Info-vax] Processes hang on USB-access

[Volker Halle]

> Correct stays the same on the hanging system 
> 
> Now I get 
> 
> FFFFFFFF.8299890C IRP$L_FPC 81DB3F50 SYS$DUDRIVER+17B50 
> 
> and 
> 
> SDA> exa/ins @81DB3F50 
> %SDA-E-NOREAD, unable to access location 00000000.00003088 
> 

Now this does look like a fork-PC in DUDRIVER !

Try

SDA> EXA @81DB3F50        ! this looks like a procedure descriptor
SDA> EXA                               ! should be the routine address
SDA> EXA/INS @.                 ! first instruction in routine

Volker.