Re: I/O bus reset to fix CMD MSCP controllers (and probably others)

>> Data point: when I boot 1.4T under my emulator, I see only three I/O
>> resets.  One is the emulator resetting itself during startup.  The
>> other two are due to writes to IPR 55, which happen [in ROM code]
> Could you see if there are any writes to the IP register?  That would
> be the software reset of just that controller.

I see five writes to IP, from startup to single-user shell.  In terms
of console output, they happen:

(1) After "2.." and before "1..0..".
(2) After "0..\r\n\n" and before "\n\r\r>> NetBSD/vax boot"
(3) After "> boot -s\r\n" and before the twirler starts.
(4) After "uba0 at ibus0: Q22\n\r\r" and before "uda0 at uba0".
(5) After "mscpbus0 at uda0" and before ": version 0 model 0".

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