qbone configuration

[Marcelo Sanseau]

I am restoring a PDP 11/23 and I replace the RLV11+rRL drives with a QBONE.  However I have the RLV11 board still sitting in the QBUS. Is there any incompatibility ?

[Jay Jaeger]

Not leaving the existing controller in with the QBone also doing emulated RL will create an address conflict, though *maybe* it will work if the Qbone is in front of the RLV on the bus?  But certainly best to change the jumpers/switches on the existing RLV to a secondary controller address if you want to leave it in place.

BTW, I did have some issues a few months back with my Qbones with respect to interrupts where I found it best to put the QBone at the end of the chain on a microVAX.  I also had an issue where my RLV12 in my micro PDP-11 would not boot using the code provided in dl.lst, but never investigated it fully, as the RLV12 would boot fine using my real boot ROMs.

JRJ

[Marcelo Sanseau]

Removing the rlv11 board solved the problem. Thanks

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