On Mon, 16 May 2005 18:58:43 -0400, "Charles H. Dickman"
wrote:

>Paramucho wrote:
>
>>>Commands are Help, Boot, List, Setup, Map and Test.
>>>Type a command then press the RETURN key: BOOT XH:
>>>
>>>
>>>Trying XH0
>>>
>>>Error 20
>>>Controller Error
>>>
>>>
>>
>>That can occur if the boot code detects some kind of setup errror, including
>>loopback failure and the like. The LEDs might provide information on that
>>and it could be worth checking the DELQA switch settings.
>>
>>
>>
>There was an error in my setup. The transceiver power supply fuse was
>blown, or at least the DELQA thought so. The jury-rigged AUI cable that
>I made did not include a fuse or the loopback signal that indicated the
>fuse was OK. I found that I have a real DELQA cabinet kit and that seems
>to work fine. My MOP server now sees the PDP-11 beg for a boot file.
>
>>Ian

"or at least the DELQA thought so" is quite an appropriate comment. I
had a DEQNA that brought up the bad fuse signal years ago so I took
the check for it out of the driver. The board worked just fine -- and
probably still does.