[rescue] New to me PDP-11/23+

[Jerry Weiss]

Micro ODT will be expecting 22 bit addresses. Example: use 17773000. 
77773000 works as well.  Micro ODT will ignore the extra bits.   Leading 
0's are not required.

The halt suggests that the internal ROM is not being used and/or is 
configured to go to an external ROM from a disk controller or other 
device that isn't present.

What are the switch-pack settings?


   Jerry



Micro ODT will be expecting 22 bit addresses.   So use 17773000. 
77773000 works as well (ODT will ignore the extra bits).
On 11/6/22 10:41 PM, John Hudak wrote:
> In one of the processor handbooks, I think it is called the 
> microcomputer handbook, there is a chapter that tells you everything 
> you need to know about using ODT. Have you read that? It is on bitsavers.
> Sorry I can’t be of more help, been at least 20+ years since I used 
> ODT. Also I think DEC micronotes had some description of ODT features.
> I’ll slog through my library and see if I can find anything helpful
>
>
> On Sun, Nov 6, 2022 at 10:12 PM Steve Hatle <steve.hatle at gmail.com> wrote:
>
>     OK - so I now have a serial terminal hooked up to the 11/73, and
>     when I power it up, I get the line
>
>     173000
>
>     and then the "@" prompt, which I assume means I'm in ODT.
>
>     >From what I can read, 173000 should be the address in the ROM to
>     fire up the setup menu on the KDJ11-B board, but no matter what
>     I'm entering at the prompt I either get back question marks or it
>     seems to jump around to different memory addresses.
>
>     so anything like
>
>     @173000G
>
>     or entering a "p" after the machine comes up don't get me anywhere.
>
>     VT320 terminal is set to 9600 8N1, not sure if I need to do
>     anything to differentiate between CR and LF as I'm entering things.
>
>     So - can you tell this obvious noob what I'm missing to get any
>     further on this guy?
>
>>     Jim Carpenter <mailto:jim at deitygraveyard.com>
>>     October 17, 2022 at 7:38 PM
>>
>>     Sure. I have a Xyplex MaxServer that boots off a CF card and does LAT
>>     and TCP/IP with no licenses needed. The user interface is just like a
>>     DECserver, which makes sense as the people that founded Xyplex were
>>     all DEC employees.
>>
>>     Cisco terminal servers can also do LAT and TCP/IP.
>>
>>     Jim
>>
>>     _______________________________________________
>>     rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>>     Peter Stokes <mailto:peter at ashlyn.co.uk>
>>     October 17, 2022 at 8:22 AM
>>     Hi
>>
>>     You could use a TCP/IP terminal server instead with Unix? Some of
>>     them did both LAT and TCP/IP from memory, though I may be mistaken.
>>
>>     Peter
>>
>>     Sent from my iPad
>>
>>
>>
>>     _______________________________________________
>>     rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>>     Dave McGuire <mailto:mcguire at neurotica.com>
>>     October 17, 2022 at 7:48 AM
>>     Those terminal servers are fantastic, but that approach would
>>     require LAT on the PDP-11.  That's possible, but not with any of
>>     the UNIX implementations that Steve is considering.
>>
>>               -Dave
>>
>>
>>
>
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>
>
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