PDP-11/45 RSTS/E boot problem

Fritz Mueller fritzm at fritzm.org
Sat Jan 5 18:44:51 CST 2019


Hi Jerry,

> On Jan 5, 2019, at 4:06 PM, Jerry Weiss <jsw at ieee.org> wrote:
> 
> Along those lines if you have a spare disk pack, try putting RT11(FB,XM) on the machine and give it a workout.   This would exercise the machine a bit more than MAINDECS, though not as much as RSTS.  

Yup, I have previously had RT-11 running on this machine without incident.

> 	• I believe you need a terminator in the RK11-C if the second disk bus is unused.

Yep, got that in there.

> 	• Try using the drive on the other bus if RSTS can be booted of from DK4.

Easy enough experiment to try; would need to re-jumper the G740 disk selection flip chip in the RK11-C too, I guess?

> 	• Make sure you only have one LTC active if a DL11-W and a KW11 are both in use.

Only a DL11-W in this system.

> 	• Don't leave the disk packs or drives near the tanks.  The squid have good aim and their ink isn't kind to electrical devices.

Ah, haven’t checked that one yet.  I will carefully check my basement for squid!

	--FritzM.




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