Re: TMSCP issue?

[Anders Magnusson <ragge%tethuvudet.se@localhost>]

Morning,

Den 2023-11-29 kl. 02:44, skrev Dave McGuire:
>   Hi folks, I'm running a 9.3 kernel on a 4000-705A, with a TMSCP tape 
> coupler (Emulex QT13) and a drive that looks to the kernel like a TU81.
>
> ...
> [     1.000000] mtc0 at uba0 csr 174500 vec 774 ipl 17
> [     1.000000] mscpbus0 at mtc0: version 2 model 5
> [     1.000000] mscpbus0: DMA burst size set to 4
> [     1.000008] mt0 at mscpbus0 drive 0: TU81
> ...
>
>   The tape subsystem works fine under VMS in this configuration, but 
> trying to access it from NetBSD, say by doing "mt -f /dev/mt0 status", 
> just hangs, with no tape motion and no output.  Pounding on ^C will 
> eventually kill the process.
>
>   Does anyone have any suggestions on this?  I've not yet tried it 
> under simh.
No suggestions, but I can note that the only tape controllers I tried 
with this driver was the DEC Qbus controller for TK50 and for TU81.
Never tried any third-party controllers.

-- Ragge